Pub Date : 2025-01-13DOI: 10.1016/j.reactfunctpolym.2025.106162
Majed S. Aljohani , Rua B. Alnoman , Hussam Y. Alharbi , M. Monier , Ibrahim Youssef
A polymeric sorbent material that could selectively capture silver ions (Ag+) from aqueous solution was prepared by an ion-imprinting method. First, maleimide-pyridyl-thiosemicarbazide (MATCH), a chelating ligand with a polymerizable maleimide moiety, was synthesized by reacting 1-amino-1H-pyrrole-2,5-dione with 2-pyridyl isothiocyanate. The complex of Ag+/MATCH ([Ag(MATCH)(H2O)2]) was incorporated into a free radical polymerization with styrene-divinylbenzene to produce an Ag-imprinted polymeric adsorbent (Ag-IIP). The Ag-IIP showed high selectivity for Ag+ over Hg2+, Cd2+, Cu2+, Pb2+, and Zn2+ after acidified thiourea chemical elution. The maximum uptake capacity reached 296 ± 1 mg/g. The adsorption behavior followed the Sips isotherm and pseudo-second-order kinetics, confirming a chemisorption mechanism. The Ag-IIP was further tested on real wastewater from AgZn batteries and achieved an impressively high Ag+ removal efficiency of 97 %, far outstripping the uptake of Zn2+. Superior selectivity results from the ability of imprinted binding sites for strong AgS and AgN coordination. Conversely, the non-imprinted polymer or NIP has much lower efficiencies of removal simply because there are no specified binding sites for the analytes.
{"title":"Design and application of ion-imprinted chelating polymer for selective adsorption of silver ion","authors":"Majed S. Aljohani , Rua B. Alnoman , Hussam Y. Alharbi , M. Monier , Ibrahim Youssef","doi":"10.1016/j.reactfunctpolym.2025.106162","DOIUrl":"10.1016/j.reactfunctpolym.2025.106162","url":null,"abstract":"<div><div>A polymeric sorbent material that could selectively capture silver ions (Ag<sup>+</sup>) from aqueous solution was prepared by an ion-imprinting method. First, maleimide-pyridyl-thiosemicarbazide (MATCH), a chelating ligand with a polymerizable maleimide moiety, was synthesized by reacting 1-amino-1H-pyrrole-2,5-dione with 2-pyridyl isothiocyanate. The complex of Ag<sup>+</sup>/MATCH ([Ag(MATCH)(H<sub>2</sub>O)<sub>2</sub>]) was incorporated into a free radical polymerization with styrene-divinylbenzene to produce an Ag-imprinted polymeric adsorbent (Ag-IIP). The Ag-IIP showed high selectivity for Ag<sup>+</sup> over Hg<sup>2+</sup>, Cd<sup>2+</sup>, Cu<sup>2+</sup>, Pb<sup>2+</sup>, and Zn<sup>2+</sup> after acidified thiourea chemical elution. The maximum uptake capacity reached 296 ± 1 mg/g. The adsorption behavior followed the Sips isotherm and pseudo-second-order kinetics, confirming a chemisorption mechanism. The Ag-IIP was further tested on real wastewater from Ag<img>Zn batteries and achieved an impressively high Ag<sup>+</sup> removal efficiency of 97 %, far outstripping the uptake of Zn<sup>2+</sup>. Superior selectivity results from the ability of imprinted binding sites for strong Ag<img>S and Ag<img>N coordination. Conversely, the non-imprinted polymer or NIP has much lower efficiencies of removal simply because there are no specified binding sites for the analytes.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"208 ","pages":"Article 106162"},"PeriodicalIF":4.5,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-12DOI: 10.1016/j.reactfunctpolym.2025.106164
Elena Camilli , Valentina Bertana , Francesca Frascella , Matteo Cocuzza , Simone Luigi Marasso , Ignazio Roppolo
Molecularly Imprinted Polymers (MIPs) as artificial receptors have received considerable scientific attention in the past few decades, as material for biomimetic molecular recognition. This paper explores the fabrication of MIPs by Additive Manufacturing (AM), which appears mostly as an unexplored field. Specifically Digital Light Processing (DLP) technology was employed to fabricate 3D-printed MIPs, imprinted with Oxytetracycline (OTC), a widespread antibiotic, whose presence in food and water must be controlled. The optimized MIP formulation also includes Methacrylic Acid as the functional monomer, Dipropylene Glycol Diacrylate as the crosslinker, and Dimethyl Sulfoxide as the solvent. The study demonstrates the recognition properties of the printed MIPs, showing enhanced binding performance with higher concentrations of the target molecule. The results underscore the potential of 3D-printed MIPs for a multitude of applications, including biomedical and environmental monitoring.
{"title":"Digital light processing 3D printing of molecularly imprinted polymers for antibiotic removal","authors":"Elena Camilli , Valentina Bertana , Francesca Frascella , Matteo Cocuzza , Simone Luigi Marasso , Ignazio Roppolo","doi":"10.1016/j.reactfunctpolym.2025.106164","DOIUrl":"10.1016/j.reactfunctpolym.2025.106164","url":null,"abstract":"<div><div>Molecularly Imprinted Polymers (MIPs) as artificial receptors have received considerable scientific attention in the past few decades, as material for biomimetic molecular recognition. This paper explores the fabrication of MIPs by Additive Manufacturing (AM), which appears mostly as an unexplored field. Specifically Digital Light Processing (DLP) technology was employed to fabricate 3D-printed MIPs, imprinted with Oxytetracycline (OTC), a widespread antibiotic, whose presence in food and water must be controlled. The optimized MIP formulation also includes Methacrylic Acid as the functional monomer, Dipropylene Glycol Diacrylate as the crosslinker, and Dimethyl Sulfoxide as the solvent. The study demonstrates the recognition properties of the printed MIPs, showing enhanced binding performance with higher concentrations of the target molecule. The results underscore the potential of 3D-printed MIPs for a multitude of applications, including biomedical and environmental monitoring.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"208 ","pages":"Article 106164"},"PeriodicalIF":4.5,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-12DOI: 10.1016/j.reactfunctpolym.2025.106156
Xiaotao Wang , Chuan Xu , Feiyang Xiao , Xiangning Yan , Chak-Yin Tang , Huiling Guo , Wing-Cheung Law
Physically adsorbing proteins through functional polymeric nanoparticles hold great potential for a variety of applications. Achieving strong and stable adsorption via hydrogen bonding in aqueous phases is challenging due to the interference from water molecules. The monomer 2-vinyl-4,6-diamino-1,3,5-triazine (VDAT) not only provides donor and receptor sites for hydrogen bonding but also possesses an apolar nature that can help prevent water molecules from interfering with these bonding sites. In this work, poly(vinyldiaminotriazine) nanoparticles (PVDAT) with sizes ranging from approximately 50 nm to 240 nm were synthesized through semi-continuous precipitation polymerization in water. The formation mechanism of PVDAT, including particle nucleation and growth stages, was investigated. VDAT oligomers aggregated to form a core and subsequently grew by adsorbing additional VDAT oligomers. Adsorption studies of PVDAT on horseradish peroxidase (HRP) demonstrated stable physical adsorption facilitated by hydrogen bonding between PVDAT and the enzyme in the aqueous phase. The adsorption of HRP by PVDAT followed the Langmuir model of single-layer adsorption, with a maximum adsorption capacity of 13.80 mg/g and a retention of enzymatic activity of ∼74.99 %. This innovative approach aims to enhance the precision and efficacy of protein separation and extraction, as well as the efficiency of enzyme immobilization.
{"title":"Synthesis of size-controlled poly(vinyldiaminotriazine) nanoparticles for enhanced hydrogen bonding adsorption of horseradish peroxidase","authors":"Xiaotao Wang , Chuan Xu , Feiyang Xiao , Xiangning Yan , Chak-Yin Tang , Huiling Guo , Wing-Cheung Law","doi":"10.1016/j.reactfunctpolym.2025.106156","DOIUrl":"10.1016/j.reactfunctpolym.2025.106156","url":null,"abstract":"<div><div>Physically adsorbing proteins through functional polymeric nanoparticles hold great potential for a variety of applications. Achieving strong and stable adsorption via hydrogen bonding in aqueous phases is challenging due to the interference from water molecules. The monomer 2-vinyl-4,6-diamino-1,3,5-triazine (VDAT) not only provides donor and receptor sites for hydrogen bonding but also possesses an apolar nature that can help prevent water molecules from interfering with these bonding sites. In this work, poly(vinyldiaminotriazine) nanoparticles (PVDAT) with sizes ranging from approximately 50 nm to 240 nm were synthesized through semi-continuous precipitation polymerization in water. The formation mechanism of PVDAT, including particle nucleation and growth stages, was investigated. VDAT oligomers aggregated to form a core and subsequently grew by adsorbing additional VDAT oligomers. Adsorption studies of PVDAT on horseradish peroxidase (HRP) demonstrated stable physical adsorption facilitated by hydrogen bonding between PVDAT and the enzyme in the aqueous phase. The adsorption of HRP by PVDAT followed the Langmuir model of single-layer adsorption, with a maximum adsorption capacity of 13.80 mg/g and a retention of enzymatic activity of ∼74.99 %. This innovative approach aims to enhance the precision and efficacy of protein separation and extraction, as well as the efficiency of enzyme immobilization.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"208 ","pages":"Article 106156"},"PeriodicalIF":4.5,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-12DOI: 10.1016/j.reactfunctpolym.2025.106158
Chunyuan Jiang , Xinrui Zhang , Xinyue Zhang , Yudong Wang , Zhizhong Ma , Xingjian Li , Yinwen Li
Protective films are widely welcomed for its excellent flexibility, good foldability, and ease of use, etc. However, they are often accompanied with low adhesive performance, moreover, there are also a pressing critical issue about poor laminated composite efficiency for polyacrylate latex type pressure-sensitive adhesives (PSAs) especially in low surface energy polyethylene (PE) based plastic/plastic laminated composite process of protective films. Polyacrylate latex type PSAs were prepared by using glycidyl methacrylate (GMA) as functional comonomer, and then novel polyphenols modified polyacrylate latex PSAs (PPSAs) were further obtained by grafting dopamine (DOPA) with epoxy groups in PSAs structures. The effects of functional monomer dosages (GMA and DOPA) on the viscosity, particle size and distribution, adhesion, and water resistance of PPSAs were investigated. The results showed that, compared with traditional polyacrylate latex type PSAs, functional GMA monomer improved the crosslinking density and cohesion of PPSAs but also accompanied with negative impact on initial adhesion; Nevertheless, while by the further introduction of functional DOPA component with significant adhesive property also improved the initial and holding tack for PPSAs. Precisely because of the introduction of GMA and DOPA effectively realized the unity of the adhesive force and cohesive force of PPSAs, and thus when the amount of GMA and DOPA were 5.0 wt% and 0.5 wt%, PPSA5 behaved with good stability, average particle size (196.4 nm) and distribution (PDI, 0.12), and best adhesive properties with initial tack (5.17 N/25 mm), 180° peel strength (6.62 N/25 mm) and holding power (>72 h/25 mm). When PPSAs further used as laminated composite adhesives for plastic/plastic laminated composite of PE based protective films. The simulated PE based protective films and improved 180° peel strength measurement results showed PPSAs behaved with tremendously tearproof laminated composite efficiency which differed from traditional polyacrylate latex type PSAs, and just by utilizing the polyphenols and epoxy groups to form effective chemical bonding bridges with functional groups introduced by corona treatment at PE based plastic/plastic lamination interface, and synergistically improving the laminated composite efficiency of PPSAs. Thus, this work presents a highly promising and broad strategy for utilization of PPSAs as laminated composite adhesives in low surface energy plastic/plastic lamination field.
{"title":"Paradoxical adhesion and polyethylene based plastic/plastic laminated composite improvement of polyphenols modified polyacrylate latex pressure-sensitive adhesives","authors":"Chunyuan Jiang , Xinrui Zhang , Xinyue Zhang , Yudong Wang , Zhizhong Ma , Xingjian Li , Yinwen Li","doi":"10.1016/j.reactfunctpolym.2025.106158","DOIUrl":"10.1016/j.reactfunctpolym.2025.106158","url":null,"abstract":"<div><div>Protective films are widely welcomed for its excellent flexibility, good foldability, and ease of use, etc. However, they are often accompanied with low adhesive performance, moreover, there are also a pressing critical issue about poor laminated composite efficiency for polyacrylate latex type pressure-sensitive adhesives (PSAs) especially in low surface energy polyethylene (PE) based plastic/plastic laminated composite process of protective films. Polyacrylate latex type PSAs were prepared by using glycidyl methacrylate (GMA) as functional comonomer, and then novel polyphenols modified polyacrylate latex PSAs (PPSAs) were further obtained by grafting dopamine (DOPA) with epoxy groups in PSAs structures. The effects of functional monomer dosages (GMA and DOPA) on the viscosity, particle size and distribution, adhesion, and water resistance of PPSAs were investigated. The results showed that, compared with traditional polyacrylate latex type PSAs, functional GMA monomer improved the crosslinking density and cohesion of PPSAs but also accompanied with negative impact on initial adhesion; Nevertheless, while by the further introduction of functional DOPA component with significant adhesive property also improved the initial and holding tack for PPSAs. Precisely because of the introduction of GMA and DOPA effectively realized the unity of the adhesive force and cohesive force of PPSAs, and thus when the amount of GMA and DOPA were 5.0 wt% and 0.5 wt%, PPSA<sub>5</sub> behaved with good stability, average particle size (196.4 nm) and distribution (PDI, 0.12), and best adhesive properties with initial tack (5.17 N/25 mm), 180° peel strength (6.62 N/25 mm) and holding power (>72 h/25 mm). When PPSAs further used as laminated composite adhesives for plastic/plastic laminated composite of PE based protective films. The simulated PE based protective films and improved 180° peel strength measurement results showed PPSAs behaved with tremendously tearproof laminated composite efficiency which differed from traditional polyacrylate latex type PSAs, and just by utilizing the polyphenols and epoxy groups to form effective chemical bonding bridges with functional groups introduced by corona treatment at PE based plastic/plastic lamination interface, and synergistically improving the laminated composite efficiency of PPSAs. Thus, this work presents a highly promising and broad strategy for utilization of PPSAs as laminated composite adhesives in low surface energy plastic/plastic lamination field.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"208 ","pages":"Article 106158"},"PeriodicalIF":4.5,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-11DOI: 10.1016/j.reactfunctpolym.2025.106163
Yongzhu Zhou , Zhenbang Xie , Fuqi Wu , Jilong Qin , Xiaohan Zhang , Jie Zhang , Xiaosi Ma , Lirong Fan , Xi Wang , Juanjuan Wang , Tingfeng Tan , Conghua Lu
Starch-based conductive hydrogels are promising for flexible electronics due to their cost-effectiveness, renewability, biocompatibility, and degradability. Herein, dual crosslinked starch/poly(vinyl alcohol)/NaCl composite hydrogels with enhanced properties have been prepared by a facile two-step method involving blending and freezing-thawing cycle. The effects of NaCl on structures and properties of the composite hydrogel were systematically studied. The structural characterizations show that the addition of NaCl results in denser network structures by strengthening the hydrogen bonding and promoting the crystallization of the polymer chains. Moreover, thermal stability, mechanical and electrical performance of the composite hydrogel have been remarkably improved. The temperature of maximum weight loss rate of the hydrogel increases by up to 17.5 °C. At 2 % (w/w) NaCl content, the hydrogel reaches a maximum tensile strength of 2.9 MPa and a break elongation of 429.8 %, while also exhibiting the highest storage modulus of 22.4 kPa and loss modulus of 5.3 kPa. The incorporation of NaCl endows the composite hydrogel with high conductivity (up to 4.2 S/m), which has been demonstrated to work as a strain sensor with superior sensing performance (gauge factor is 1.7 at 0–100 % strain) to monitor diverse human activities precisely and reliably.
{"title":"Facile fabrication and characterization of double network starch/PVA/NaCl composite hydrogel for flexible strain sensor","authors":"Yongzhu Zhou , Zhenbang Xie , Fuqi Wu , Jilong Qin , Xiaohan Zhang , Jie Zhang , Xiaosi Ma , Lirong Fan , Xi Wang , Juanjuan Wang , Tingfeng Tan , Conghua Lu","doi":"10.1016/j.reactfunctpolym.2025.106163","DOIUrl":"10.1016/j.reactfunctpolym.2025.106163","url":null,"abstract":"<div><div>Starch-based conductive hydrogels are promising for flexible electronics due to their cost-effectiveness, renewability, biocompatibility, and degradability. Herein, dual crosslinked starch/poly(vinyl alcohol)/NaCl composite hydrogels with enhanced properties have been prepared by a facile two-step method involving blending and freezing-thawing cycle. The effects of NaCl on structures and properties of the composite hydrogel were systematically studied. The structural characterizations show that the addition of NaCl results in denser network structures by strengthening the hydrogen bonding and promoting the crystallization of the polymer chains. Moreover, thermal stability, mechanical and electrical performance of the composite hydrogel have been remarkably improved. The temperature of maximum weight loss rate of the hydrogel increases by up to 17.5 °C. At 2 % (w/w) NaCl content, the hydrogel reaches a maximum tensile strength of 2.9 MPa and a break elongation of 429.8 %, while also exhibiting the highest storage modulus of 22.4 kPa and loss modulus of 5.3 kPa. The incorporation of NaCl endows the composite hydrogel with high conductivity (up to 4.2 S/m), which has been demonstrated to work as a strain sensor with superior sensing performance (gauge factor is 1.7 at 0–100 % strain) to monitor diverse human activities precisely and reliably.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"208 ","pages":"Article 106163"},"PeriodicalIF":4.5,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-11DOI: 10.1016/j.reactfunctpolym.2025.106157
Guanwu Yin , Xiaoyue Yang , Quanbo Xu , Xiaofan Chen , Haiyan Wang
Antibacterial cotton fabric has attracted significant attention due to its widespread applications in clinical and medical supplies. However, many of these fabrics suffer from inadequate antibacterial durability and biocompatibility, which not only limit their practical application but also pose potential risks to human health. Herein, a series of aminoethylaminopropyl polydimethylsiloxane (AEAPS) with various amino acids were successfully synthesized, then the corresponding silicone oil emulsions were obtained via phase inversion emulsification and a durable and biocompatible antibacterial cotton fabric was achieved. The influence of various amino acid residues on antibacterial efficacy was investigated and L-Tryptophan (Trp) graft silicone oil (L-Trp-AEAPS) exhibits the best antibacterial performance. In addition, the resulting antibacterial cotton fabric (L-Trp-AEAPS-CF) shows good antibacterial activity against E. coli and S. aureus, excellent biocompatibility, and low toxicity owing to the amino acid residue. Finally, after 50 laundering cycles, the L-Trp-AEAPS-CF retained an antibacterial efficiency exceeding 98 %, indicating excellent washing durability. The L-Trp-AEAPS-CF with antibacterial durability and biocompatibility exhibited broad application prospects in biomedical materials.
{"title":"Preparation of amino acid-derived silicones as durable and biocompatible antibacterial finishing agents for cotton fabric","authors":"Guanwu Yin , Xiaoyue Yang , Quanbo Xu , Xiaofan Chen , Haiyan Wang","doi":"10.1016/j.reactfunctpolym.2025.106157","DOIUrl":"10.1016/j.reactfunctpolym.2025.106157","url":null,"abstract":"<div><div>Antibacterial cotton fabric has attracted significant attention due to its widespread applications in clinical and medical supplies. However, many of these fabrics suffer from inadequate antibacterial durability and biocompatibility, which not only limit their practical application but also pose potential risks to human health. Herein, a series of aminoethylaminopropyl polydimethylsiloxane (AEAPS) with various amino acids were successfully synthesized, then the corresponding silicone oil emulsions were obtained via phase inversion emulsification and a durable and biocompatible antibacterial cotton fabric was achieved. The influence of various amino acid residues on antibacterial efficacy was investigated and L-Tryptophan (Trp) graft silicone oil (L-Trp-AEAPS) exhibits the best antibacterial performance. In addition, the resulting antibacterial cotton fabric (L-Trp-AEAPS-CF) shows good antibacterial activity against <em>E. coli</em> and <em>S. aureus</em>, excellent biocompatibility, and low toxicity owing to the amino acid residue. Finally, after 50 laundering cycles, the L-Trp-AEAPS-CF retained an antibacterial efficiency exceeding 98 %, indicating excellent washing durability. The L-Trp-AEAPS-CF with antibacterial durability and biocompatibility exhibited broad application prospects in biomedical materials.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"208 ","pages":"Article 106157"},"PeriodicalIF":4.5,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-10DOI: 10.1016/j.reactfunctpolym.2025.106159
Zhiwei Ye , Juan Yi , Yibo Zhang, Chuanxi Xiong
Research on the piezoelectricity of poly(vinylidene fluoride) (PVDF) has primarily concentrated on the β phase content, with comparatively little attention paid to the crystallization morphology of the β phase and the crystalline and amorphous interfaces. Herein, we prepared piezoelectric PVDF films with pure β phase, high crystallinity, and rich crystalline-amorphous interface through ultra-drawing and high-pressure thermal annealing. The solution casting PVDF films exhibited similar to thermotropic glass transition behavior (steps in the DSC curves, Tg-like), resulting in stretching multiplicities up to 12, much higher than previous studies. Meanwhile, the refinement of oriented fiber crystals was visually shown in the AFM force mapping images. Furthermore, the WAXD and SAXS results demonstrated that the PVDF exhibited a smaller grain size following ultra-drawing. The piezoelectric coefficient of the PVDF film subjected to ultra-drawing is superior to that of the commercial PVDF film. Self-powered sensor devices based on PVDF film exhibit excellent linear sensing characteristics over a large stress range (20 MPa). The work presents a straightforward approach for the fabrication of flexible piezoelectric PVDF films, facilitating the commercialization of a vast array of self-powered sensing films.
{"title":"Ultra-drawn PVDF piezoelectric film for linear and large-range pressure sensing","authors":"Zhiwei Ye , Juan Yi , Yibo Zhang, Chuanxi Xiong","doi":"10.1016/j.reactfunctpolym.2025.106159","DOIUrl":"10.1016/j.reactfunctpolym.2025.106159","url":null,"abstract":"<div><div>Research on the piezoelectricity of poly(vinylidene fluoride) (PVDF) has primarily concentrated on the β phase content, with comparatively little attention paid to the crystallization morphology of the β phase and the crystalline and amorphous interfaces. Herein, we prepared piezoelectric PVDF films with pure β phase, high crystallinity, and rich crystalline-amorphous interface through ultra-drawing and high-pressure thermal annealing. The solution casting PVDF films exhibited similar to thermotropic glass transition behavior (steps in the DSC curves, Tg-like), resulting in stretching multiplicities up to 12, much higher than previous studies. Meanwhile, the refinement of oriented fiber crystals was visually shown in the AFM force mapping images. Furthermore, the WAXD and SAXS results demonstrated that the PVDF exhibited a smaller grain size following ultra-drawing. The piezoelectric coefficient of the PVDF film subjected to ultra-drawing is superior to that of the commercial PVDF film. Self-powered sensor devices based on PVDF film exhibit excellent linear sensing characteristics over a large stress range (20 MPa). The work presents a straightforward approach for the fabrication of flexible piezoelectric PVDF films, facilitating the commercialization of a vast array of self-powered sensing films.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"208 ","pages":"Article 106159"},"PeriodicalIF":4.5,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-10DOI: 10.1016/j.reactfunctpolym.2025.106161
Natalia M. Schulz , Lazaros Papadopoulos , Lia Hagenlocher , Anja Gohla , Dimitrios N. Bikiaris , Tobias Robert
Additive manufacturing allows for the fabrication of specialized parts with high individualization and opens up new fields of application. However, in many cases the performance of parts fabricated by additive manufacturing cannot compete with similar parts prepared by more classical manufacturing technologies like injection molding. One possibility to enhance the performance is the printing of composites, reinforced with fibers and/or particles. For thermoplastic matrices, the preparation and processing of composites with additive manufacturing techniques is quite straight-forward, utilizing for example fiber or particle filled filaments in fused filament fabrication. On the other hand, for techniques utilizing thermosetting matrices, such as stereolithography, the production of composites is more challenging. Fillers can sediment over the time of the printing process and that can lead to a heterogenous distribution of the particles in the printed parts. In this work, we present the use of wood and olive kernel flour as fillers in combination with bio-based UV-curable resins, to prepare biocomposites by means of UV-curing additive manufacturing. Up to 15 % of the bio-based fillers could be incorporated in the polymer matrix without agglomeration of the particles. In addition, the fillers enhanced the mechanical performance and the thermal stability, even at relatively low loadings. For example, the addition of only 0.5 wt% olive kernel flour resulted in an enhancement of the tensile modulus from 190 to 593 MPa. Therefore, these renewable fillers are promising candidates for the fabrication of composite materials with stereolithography techniques, as they enhance the thermomechanical properties of the printed parts while simultaneously increasing the overall bio-based content of that class of UV-curing materials.
{"title":"Wood and olive kernel flour as reinforcement for itaconic acid-based UV-curing additive manufacturing material","authors":"Natalia M. Schulz , Lazaros Papadopoulos , Lia Hagenlocher , Anja Gohla , Dimitrios N. Bikiaris , Tobias Robert","doi":"10.1016/j.reactfunctpolym.2025.106161","DOIUrl":"10.1016/j.reactfunctpolym.2025.106161","url":null,"abstract":"<div><div>Additive manufacturing allows for the fabrication of specialized parts with high individualization and opens up new fields of application. However, in many cases the performance of parts fabricated by additive manufacturing cannot compete with similar parts prepared by more classical manufacturing technologies like injection molding. One possibility to enhance the performance is the printing of composites, reinforced with fibers and/or particles. For thermoplastic matrices, the preparation and processing of composites with additive manufacturing techniques is quite straight-forward, utilizing for example fiber or particle filled filaments in fused filament fabrication. On the other hand, for techniques utilizing thermosetting matrices, such as stereolithography, the production of composites is more challenging. Fillers can sediment over the time of the printing process and that can lead to a heterogenous distribution of the particles in the printed parts. In this work, we present the use of wood and olive kernel flour as fillers in combination with bio-based UV-curable resins, to prepare biocomposites by means of UV-curing additive manufacturing. Up to 15 % of the bio-based fillers could be incorporated in the polymer matrix without agglomeration of the particles. In addition, the fillers enhanced the mechanical performance and the thermal stability, even at relatively low loadings. For example, the addition of only 0.5 wt% olive kernel flour resulted in an enhancement of the tensile modulus from 190 to 593 MPa. Therefore, these renewable fillers are promising candidates for the fabrication of composite materials with stereolithography techniques, as they enhance the thermomechanical properties of the printed parts while simultaneously increasing the overall bio-based content of that class of UV-curing materials.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"208 ","pages":"Article 106161"},"PeriodicalIF":4.5,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-10DOI: 10.1016/j.reactfunctpolym.2025.106154
Meng Li , Qian Huang , Jingjing Liu , Xumiao Jia , Ying Lei , Weixing Chen
Superhydrophobic polymer sponges have attracted tremendous attention as prospective sorbent materials for oily wastewater treatment depend on their unique highly selective oil/water separation. Nevertheless, it is still challenging to fabricate the superhydrophobic sponges in a totally waterborne manner. In the current work, we presented a facile, cost-effective, scalable, and totally waterborne method to prepare superhydrophobic melamine sponges (SMS) via modification of melamine sponge (MS) with polydimethylsiloxane (PDMS) emulsion. Benefiting from the surface roughness increased and surface energy lowered simultaneously after PDMS molecules grafted onto the surface of MS, the SMS exhibited superhydrophobicity (contact angle (CA) > 155o). Impressively, the as-prepared SMS displayed superior oil/organic solvent sorption capacity, recyclability, and stability in harsh chemical/physical conditions (e.g., strongly acidic/alkaline solution, high/low-temperature environment). The SMS was utilized as an essential core component of the continuous oil pollutant removal device to realize highly efficient oil/water separation. Moreover, the SMS was successfully demonstrated for separating both immiscible oil/water mixture and surfactant-stabilized water-in-oil emulsions. Therefore, this facile, eco-friendly, and cost-effective synthesis strategy can be easily integrated into industrial and exhibit great potential for environmental remediation.
{"title":"Facile fabrication of totally waterborne superhydrophobic sponge for versatile and efficient oil/water separation","authors":"Meng Li , Qian Huang , Jingjing Liu , Xumiao Jia , Ying Lei , Weixing Chen","doi":"10.1016/j.reactfunctpolym.2025.106154","DOIUrl":"10.1016/j.reactfunctpolym.2025.106154","url":null,"abstract":"<div><div>Superhydrophobic polymer sponges have attracted tremendous attention as prospective sorbent materials for oily wastewater treatment depend on their unique highly selective oil/water separation. Nevertheless, it is still challenging to fabricate the superhydrophobic sponges in a totally waterborne manner. In the current work, we presented a facile, cost-effective, scalable, and totally waterborne method to prepare superhydrophobic melamine sponges (SMS) <em>via</em> modification of melamine sponge (MS) with polydimethylsiloxane (PDMS) emulsion. Benefiting from the surface roughness increased and surface energy lowered simultaneously after PDMS molecules grafted onto the surface of MS, the SMS exhibited superhydrophobicity (contact angle (CA) > 155<sup>o</sup>). Impressively, the as-prepared SMS displayed superior oil/organic solvent sorption capacity, recyclability, and stability in harsh chemical/physical conditions (<em>e.g.</em>, strongly acidic/alkaline solution, high/low-temperature environment). The SMS was utilized as an essential core component of the continuous oil pollutant removal device to realize highly efficient oil/water separation. Moreover, the SMS was successfully demonstrated for separating both immiscible oil/water mixture and surfactant-stabilized water-in-oil emulsions. Therefore, this facile, eco-friendly, and cost-effective synthesis strategy can be easily integrated into industrial and exhibit great potential for environmental remediation.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"208 ","pages":"Article 106154"},"PeriodicalIF":4.5,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-09DOI: 10.1016/j.reactfunctpolym.2025.106149
Andrey S. Barbosa , Ana Laura G. Biancolli , Bianca P.S. Santos , Jean-Jacques Bonvent , Daniel Hermida-Merino , Elisabete I. Santiago
Manufacturing anion-exchange membranes (AEMs) with high durability is a current challenge for low-temperature alkaline fuel cells. In this work, a series of AEMs based on high-density polyethylene (HDPE) is synthetized by radiation-induced grafting (RIG) method considering various pre-irradiation conditions, such as temperature and atmosphere. The AEMs are extensively characterized, including assessments of the degree of grafting (DoG), ion-exchange capacity (IEC), water absorption properties, and hydroxide conductivity. Additionally, their molecular structure and thermal and mechanical properties are evaluated. Techniques, such as atomic force microscopy (AFM) and synchrotron small angle x-ray scattering (SAXS), are employed for analysis of AEMs morphology. Finally, the AEMs are applied in an H2-O2 anion-exchange membrane fuel cell (AEMFC) and subjected to a short-term stability test. Among the tested AEMs, the one pre-irradiated at low temperature (−10 °C) and air atmosphere exhibits excellent AEMFC performance of 2.1 W cm−2. This sample possesses high OH− conductivity of 208 mS cm−1 at 80 °C, and the stability test shows a conductivity loss of −0.06 % h−1 during 100 h under reduced relative humidity (80 %). Applying an accurate protocol for controlling pre-irradiation parameters can effectively reduce the irradiation degradation effects.
{"title":"Advancements in radiation-induced grafted anion-exchange membranes: Controlling pre-irradiation parameters of high-density polyethylene for enhanced fuel cell performance and durability","authors":"Andrey S. Barbosa , Ana Laura G. Biancolli , Bianca P.S. Santos , Jean-Jacques Bonvent , Daniel Hermida-Merino , Elisabete I. Santiago","doi":"10.1016/j.reactfunctpolym.2025.106149","DOIUrl":"10.1016/j.reactfunctpolym.2025.106149","url":null,"abstract":"<div><div>Manufacturing anion-exchange membranes (AEMs) with high durability is a current challenge for low-temperature alkaline fuel cells. In this work, a series of AEMs based on high-density polyethylene (HDPE) is synthetized by radiation-induced grafting (RIG) method considering various pre-irradiation conditions, such as temperature and atmosphere. The AEMs are extensively characterized, including assessments of the degree of grafting (DoG), ion-exchange capacity (IEC), water absorption properties, and hydroxide conductivity. Additionally, their molecular structure and thermal and mechanical properties are evaluated. Techniques, such as atomic force microscopy (AFM) and synchrotron small angle x-ray scattering (SAXS), are employed for analysis of AEMs morphology. Finally, the AEMs are applied in an H<sub>2</sub>-O<sub>2</sub> anion-exchange membrane fuel cell (AEMFC) and subjected to a short-term stability test. Among the tested AEMs, the one pre-irradiated at low temperature (−10 °C) and air atmosphere exhibits excellent AEMFC performance of 2.1 W cm<sup>−2</sup>. This sample possesses high OH<sup>−</sup> conductivity of 208 mS cm<sup>−1</sup> at 80 °C, and the stability test shows a conductivity loss of −0.06 % h<sup>−1</sup> during 100 h under reduced relative humidity (80 %). Applying an accurate protocol for controlling pre-irradiation parameters can effectively reduce the irradiation degradation effects.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"208 ","pages":"Article 106149"},"PeriodicalIF":4.5,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}