Reactive & Functional Polymers最新文献

英文中文

Fabricated adhesive hydrogel patches via regulating weak physical interactions through carboxylated cellulose nanofibers

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-02-14 DOI: 10.1016/j.reactfunctpolym.2025.106195

Bin Lan, Tao Wang, Shuang Wu, Qi Yang

Hydrogel has a similar modulus and water content to human tissues, making it an excellent medical material for wound dressings. Currently, hydrogel wound dressings face issues such as unclear mechanisms, complex synthesis processes, chemical reagent toxicity, lack of on-demand bonding, and low mechanical properties, particularly poor adhesion strength. Fabricating highly adhesive hydrogel patches in wet environments remains a challenge. In this work, we have successfully constructed a biosafe PVA@PAA hydrogel by regulating weak physical interactions within the polymer networks, enhancing the adhesion performance of hydrogels to soft tissues. Results indicated that regulating weak physical interactions, such as hydrogen bonding, could significantly enhance the adhesive properties of hydrogels with soft tissues. Incorporating 0.5 wt% C-CNF into PVA@PAA hydrogel resulted in a 181.02 % and 170.97 % increase in adhesive and tensile strength, respectively. PVA@PAA hydrogel exhibited strong adhesion to soft and wet tissues like chicken heart, gizzard, liver, and rabbit kidney. Cytotoxicity assays demonstrated excellent biocompatibility, confirming its suitability as a tissue adhesive. Moreover, due to the hydrogen bond-mediated adhesion mechanism, the adhesive can be removed on-demand using a specific solution after wound healing. This biocompatible, highly adhesive, and detachable hydrogel holds significant potential for clinical wound dressing applications.

{"title":"Fabricated adhesive hydrogel patches via regulating weak physical interactions through carboxylated cellulose nanofibers","authors":"Bin Lan, Tao Wang, Shuang Wu, Qi Yang","doi":"10.1016/j.reactfunctpolym.2025.106195","DOIUrl":"10.1016/j.reactfunctpolym.2025.106195","url":null,"abstract":"<div><div>Hydrogel has a similar modulus and water content to human tissues, making it an excellent medical material for wound dressings. Currently, hydrogel wound dressings face issues such as unclear mechanisms, complex synthesis processes, chemical reagent toxicity, lack of on-demand bonding, and low mechanical properties, particularly poor adhesion strength. Fabricating highly adhesive hydrogel patches in wet environments remains a challenge. In this work, we have successfully constructed a biosafe PVA@PAA hydrogel by regulating weak physical interactions within the polymer networks, enhancing the adhesion performance of hydrogels to soft tissues. Results indicated that regulating weak physical interactions, such as hydrogen bonding, could significantly enhance the adhesive properties of hydrogels with soft tissues. Incorporating 0.5 wt% C-CNF into PVA@PAA hydrogel resulted in a 181.02 % and 170.97 % increase in adhesive and tensile strength, respectively. PVA@PAA hydrogel exhibited strong adhesion to soft and wet tissues like chicken heart, gizzard, liver, and rabbit kidney. Cytotoxicity assays demonstrated excellent biocompatibility, confirming its suitability as a tissue adhesive. Moreover, due to the hydrogen bond-mediated adhesion mechanism, the adhesive can be removed on-demand using a specific solution after wound healing. This biocompatible, highly adhesive, and detachable hydrogel holds significant potential for clinical wound dressing applications.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"210 ","pages":"Article 106195"},"PeriodicalIF":4.5,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436606","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}

引用次数: 0

Interpenetrating polymer networks of poly (2-hydroxyethyl methacrylate co-itaconic acid) and chitosan as a controlled release matrix

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-02-14 DOI: 10.1016/j.reactfunctpolym.2025.106192

N.E. Valderruten, J. García

Interpenetrating networks of chitosan and poly (2-hydroxyethyl methacrylate co-itaconic acid) p(HEMA-co-IA) were synthesized. FTIR spectra confirmed the crosslinking of chitosan and the polymerization and crosslinking of 2-hydroxyethyl methacrylate (HEMA) with itaconic acid (IA). Swelling properties were studied at different pH levels, and it was shown that such properties depend primarily on chitosan and itaconic acid content and the sensitivity to pH of the network components. The degradation of the materials obtained was performed with lysozyme under simulated physiological conditions. Increased degradation was observed with increasing copolymer content (p(HEMA-co-IA)) in the hydrogel. Creep-recovery analysis studies demonstrated that the materials exhibit viscoelastic behavior, resulting in lower instantaneous deformation of the interpenetrating hydrogels and higher shear modulus. Diclofenac sodium was used as a model drug for controlled release studies. The results indicate that the incorporation of the copolymer increased the concentration of drug released by the hydrogel.

{"title":"Interpenetrating polymer networks of poly (2-hydroxyethyl methacrylate co-itaconic acid) and chitosan as a controlled release matrix","authors":"N.E. Valderruten, J. García","doi":"10.1016/j.reactfunctpolym.2025.106192","DOIUrl":"10.1016/j.reactfunctpolym.2025.106192","url":null,"abstract":"<div><div>Interpenetrating networks of chitosan and poly (2-hydroxyethyl methacrylate <em>co</em>-itaconic acid) p(HEMA-co-IA) were synthesized. FTIR spectra confirmed the crosslinking of chitosan and the polymerization and crosslinking of 2-hydroxyethyl methacrylate (HEMA) with itaconic acid (IA). Swelling properties were studied at different pH levels, and it was shown that such properties depend primarily on chitosan and itaconic acid content and the sensitivity to pH of the network components. The degradation of the materials obtained was performed with lysozyme under simulated physiological conditions. Increased degradation was observed with increasing copolymer content (p(HEMA-co-IA)) in the hydrogel. Creep-recovery analysis studies demonstrated that the materials exhibit viscoelastic behavior, resulting in lower instantaneous deformation of the interpenetrating hydrogels and higher shear modulus. Diclofenac sodium was used as a model drug for controlled release studies. The results indicate that the incorporation of the copolymer increased the concentration of drug released by the hydrogel.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"210 ","pages":"Article 106192"},"PeriodicalIF":4.5,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436720","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}

引用次数: 0

Optimization of the performance of epoxy intumescent fire-retardant coatings utilizing amino-polysiloxanes with varying compositions

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-02-13 DOI: 10.1016/j.reactfunctpolym.2025.106191

Weilei Tan, Yinlong Guo, Yanli Xiang, Xu Meng, Chenyi Wang, Qiang Ren

The performance of epoxy intumescent fire-retardant coatings (IFRC) needs to be optimized to meet the requirements of different application scenarios. In this work, a series of amine-functionalized polysiloxanes (amino-polysiloxanes) with different molar ratios of side groups including methyl, phenyl and amino were synthesized by polycondensation and ring-opening polymerization as curing agents for epoxy resins to achieve this target. The structures of amino-polysiloxanes were well characterized by FTIR, ¹H NMR and chemical titration. Amino-polysiloxanes with different compositions can effectively adjust the glass transition temperatures (T_g) of epoxy thermosets in the range of 40.7–71.4 °C as revealed by DSC. IFRC based on different amino-polysiloxanes exhibit different expansion ratio and fire resistance time. Epoxy intumescent fire-retardant coating IC1Ph with epoxy binder T_g of 46.0 °C exhibited the longest fire resistance time up to 63.4 min. SEM-EDS results showed that the carbon layer of IC1Ph has the smallest and homogenous pore size. UV and humidity exposure tests indicate that presence of phenyl in amine-polysiloxanes contributed to the durability of the IFRC. Amine-polysiloxanes with varying composition are conducive to optimize of the performance of epoxy intumescent fire-retardant coatings.

{"title":"Optimization of the performance of epoxy intumescent fire-retardant coatings utilizing amino-polysiloxanes with varying compositions","authors":"Weilei Tan, Yinlong Guo, Yanli Xiang, Xu Meng, Chenyi Wang, Qiang Ren","doi":"10.1016/j.reactfunctpolym.2025.106191","DOIUrl":"10.1016/j.reactfunctpolym.2025.106191","url":null,"abstract":"<div><div>The performance of epoxy intumescent fire-retardant coatings (IFRC) needs to be optimized to meet the requirements of different application scenarios. In this work, a series of amine-functionalized polysiloxanes (amino-polysiloxanes) with different molar ratios of side groups including methyl, phenyl and amino were synthesized by polycondensation and ring-opening polymerization as curing agents for epoxy resins to achieve this target. The structures of amino-polysiloxanes were well characterized by FTIR, <sup>1</sup>H NMR and chemical titration. Amino-polysiloxanes with different compositions can effectively adjust the glass transition temperatures (<em>T</em><sub>g</sub>) of epoxy thermosets in the range of 40.7–71.4 °C as revealed by DSC. IFRC based on different amino-polysiloxanes exhibit different expansion ratio and fire resistance time. Epoxy intumescent fire-retardant coating IC1Ph with epoxy binder <em>T</em><sub>g</sub> of 46.0 °C exhibited the longest fire resistance time up to 63.4 min. SEM-EDS results showed that the carbon layer of IC1Ph has the smallest and homogenous pore size. UV and humidity exposure tests indicate that presence of phenyl in amine-polysiloxanes contributed to the durability of the IFRC. Amine-polysiloxanes with varying composition are conducive to optimize of the performance of epoxy intumescent fire-retardant coatings.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"210 ","pages":"Article 106191"},"PeriodicalIF":4.5,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436719","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}

引用次数: 0

The effect of coordination state on the activity of TA-Zr supramolecular networks for heavy metals removal from water

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-02-13 DOI: 10.1016/j.reactfunctpolym.2025.106190

Shuxin Chen, Liting Wang, Wenxiang Ni, Hui Qiu

The self-assembly behavior of the MPNs-based adsorbent is substantially influenced by changes in solution pH. In this study, a highly negatively charged tannic acid‑zirconium (TA-Zr) macromolecular network has been successfully synthesized. As pH increases from 3 to 11, the coordination structure of TA with Zr(IV) changes from mono- to tri-complexation state, resulting in enhanced electronegativity and increased structural stability of tri-complex TA-Zr(9) due to its higher charge density. The TA dissolution experiments and zeta potential measurements confirm this conclusion. The tri-complex TA-Zr(11) underwent structural changes in its macromolecular network due to partial zirconium hydroxide formation under strongly alkaline conditions, as confirmed by X-ray photoelectron spectroscopy analysis, which in turn impacted its stability. Meanwhile, the adsorption capacity of TA-Zr materials for Pb(II) ion increases with the pH of the synthesis solution. XPS analysis suggested that the underlying adsorption mechanism involved ligand exchange between Pb(II) ion and phenolic hydroxyl groups on TA-Zr(9). After batch adsorption-regeneration cycles, TA-Zr(9) could be regenerated with an acidic solution while maintaining consistent Pb(II) ion removal efficiency. Furthermore, TA-Zr(9) effectively treated 12,150 bed volumes (BV) of synthetic water at pH 5.6, which is 18 times more than commercial D001. These results confirm that TA-Zr(9) shows great potential as an effective adsorbentfor Pb(II) removal in practical wastewater treatment, making it a promising candidate for water remediation.

{"title":"The effect of coordination state on the activity of TA-Zr supramolecular networks for heavy metals removal from water","authors":"Shuxin Chen, Liting Wang, Wenxiang Ni, Hui Qiu","doi":"10.1016/j.reactfunctpolym.2025.106190","DOIUrl":"10.1016/j.reactfunctpolym.2025.106190","url":null,"abstract":"<div><div>The self-assembly behavior of the MPNs-based adsorbent is substantially influenced by changes in solution pH. In this study, a highly negatively charged tannic acid‑zirconium (TA-Zr) macromolecular network has been successfully synthesized. As pH increases from 3 to 11, the coordination structure of TA with Zr(IV) changes from mono- to tri-complexation state, resulting in enhanced electronegativity and increased structural stability of tri-complex TA-Zr(9) due to its higher charge density. The TA dissolution experiments and zeta potential measurements confirm this conclusion. The tri-complex TA-Zr(11) underwent structural changes in its macromolecular network due to partial zirconium hydroxide formation under strongly alkaline conditions, as confirmed by X-ray photoelectron spectroscopy analysis, which in turn impacted its stability. Meanwhile, the adsorption capacity of TA-Zr materials for Pb(II) ion increases with the pH of the synthesis solution. XPS analysis suggested that the underlying adsorption mechanism involved ligand exchange between Pb(II) ion and phenolic hydroxyl groups on TA-Zr(9). After batch adsorption-regeneration cycles, TA-Zr(9) could be regenerated with an acidic solution while maintaining consistent Pb(II) ion removal efficiency. Furthermore, TA-Zr(9) effectively treated 12,150 bed volumes (BV) of synthetic water at pH 5.6, which is 18 times more than commercial D001. These results confirm that TA-Zr(9) shows great potential as an effective adsorbentfor Pb(II) removal in practical wastewater treatment, making it a promising candidate for water remediation.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"210 ","pages":"Article 106190"},"PeriodicalIF":4.5,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436583","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}

引用次数: 0

Effective removal of cationic dyes in a single aliquot using thiophene based bis-chalcone polymers

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-02-13 DOI: 10.1016/j.reactfunctpolym.2025.106189

P. Sowmya, Abraham Joseph

This study explores the dye adsorption efficacy of thiophene bearing bis-chalcone based polymers poly [(1E,4E)-1,5-Di-2-thienylpenta-1,4-dien-3-one] (PTCA) and poly[(1E,4E)-2,4-dimethyl-1,5-di(thiophen-2-yl)penta-1,4-dien-3-one] (PTCM). Both PTCA and PTCM show high removal efficiency towards cationic dyes such as Methylene Blue, Malachite Green, Crystal violet, and Rhodamine B compared to the anionic dyes such as Methyl Red, Congo Red, and Methyl Orange. Since both PTCA and PTCM show the highest removal efficiency towards Crystal Violet dye, it was chosen as a representative cationic dye to understand different factors affecting adsorption. Experimental data indicates that for PTCA, the maximum adsorption capacity observed was 151.49 mg/g and for PTCM, the maximum adsorption capacity observed was 142.28 mg/g. The form-fitting of adsorption data with the Langmuir adsorption isotherm model indicates monolayer adsorption. The kinetic investigation demonstrates that the adsorption follows pseudo second order kinetics, hence chemisorption is involved in the process that drives the adsorption. The high dye removal efficiency towards CV is due to the combined effect of intra-particle diffusion processes and surface adsorption. Recyclability study reveals that PTCA retains 96.42 % removal efficiency and PTCM retains 92.46 % removal efficiency after five cycles, which shows promising reusability and regenerative nature of polymeric adsorbents.

{"title":"Effective removal of cationic dyes in a single aliquot using thiophene based bis-chalcone polymers","authors":"P. Sowmya, Abraham Joseph","doi":"10.1016/j.reactfunctpolym.2025.106189","DOIUrl":"10.1016/j.reactfunctpolym.2025.106189","url":null,"abstract":"<div><div>This study explores the dye adsorption efficacy of thiophene bearing bis-chalcone based polymers poly [(1E,4E)-1,5-Di-2-thienylpenta-1,4-dien-3-one] (PTCA) and poly[(1E,4E)-2,4-dimethyl-1,5-di(thiophen-2-yl)penta-1,4-dien-3-one] (PTCM). Both PTCA and PTCM show high removal efficiency towards cationic dyes such as Methylene Blue, Malachite Green, Crystal violet, and Rhodamine B compared to the anionic dyes such as Methyl Red, Congo Red, and Methyl Orange. Since both PTCA and PTCM show the highest removal efficiency towards Crystal Violet dye, it was chosen as a representative cationic dye to understand different factors affecting adsorption. Experimental data indicates that for PTCA, the maximum adsorption capacity observed was 151.49 mg/g and for PTCM, the maximum adsorption capacity observed was 142.28 mg/g. The form-fitting of adsorption data with the Langmuir adsorption isotherm model indicates monolayer adsorption. The kinetic investigation demonstrates that the adsorption follows pseudo second order kinetics, hence chemisorption is involved in the process that drives the adsorption. The high dye removal efficiency towards CV is due to the combined effect of intra-particle diffusion processes and surface adsorption. Recyclability study reveals that PTCA retains 96.42 % removal efficiency and PTCM retains 92.46 % removal efficiency after five cycles, which shows promising reusability and regenerative nature of polymeric adsorbents.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"210 ","pages":"Article 106189"},"PeriodicalIF":4.5,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421906","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}

引用次数: 0

Corrigendum to “Preparation of polysulfone based rubidium ion imprinted membrane and its selective adsorption and separation performance” [Reactive and Functional Polymers 191(2023) 105696]

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-02-11 DOI: 10.1016/j.reactfunctpolym.2025.106187

Qiang Shi, Yi Wang, Wanjun Liu, Haiyan Zhang, Yemo Li, Jixuan Jiao, Wei Zhao, Yi Shen

引用次数: 0

Design of thermally triggered triple-shape memory ternary polymer blends for 4D printing applications

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-02-10 DOI: 10.1016/j.reactfunctpolym.2025.106188

Emre Tekay , Betül Aybakan , Vahap Uygar Aslan

4D printing represents an emerging technology that has developed from the combination of shape memory polymers (SMPs) with additive manufacturing techniques. Shape memory polymers are members of the smart materials family and have the capability to change their shape in response to a stimulus. Thermo-responsive triple-SMPs possess the capability to maintain two distinct temporary shapes and can transition between these shapes when exposed to heat. This study introduces novel ternary polymer blends incorporating ethylene vinyl acetate copolymer (EVA), maleic anhydride grafted poly(styrene-b-ethylene-butylene-b-styrene) (SEBS-MA), and poly(butyl-co-isobutyl methacrylate) (PBMA-PiBMA) polymers, which exhibit thermo-responsive triple-shape memory properties at 40 °C and 80 °C. The SEBS-MA/EVA/PBMA-PiBMA ternary blend with 30/40/30 composition showed optimal triple-shape memory performance, exhibiting 92.3 % first shape fixing, 88.0 % second shape fixing, 90.5 % first shape recovery and 100 % second shape recovery ratios. The same blend also demonstrated a dual shape memory effect at 80 °C, achieving a shape fixing ratio of 98.6 % and a shape recovery performance of 100 %. Filament of the polymer blend was produced to be used in 3D printers. Using this filament, a hinge, a daisy, a stent, and a robotic gripper were created for use in different 4D printing applications. The 4D-printed objects produced from the ternary blend filament show two-way shape recovery at 40 °C and 80 °C.

{"title":"Design of thermally triggered triple-shape memory ternary polymer blends for 4D printing applications","authors":"Emre Tekay , Betül Aybakan , Vahap Uygar Aslan","doi":"10.1016/j.reactfunctpolym.2025.106188","DOIUrl":"10.1016/j.reactfunctpolym.2025.106188","url":null,"abstract":"<div><div>4D printing represents an emerging technology that has developed from the combination of shape memory polymers (SMPs) with additive manufacturing techniques. Shape memory polymers are members of the smart materials family and have the capability to change their shape in response to a stimulus. Thermo-responsive triple-SMPs possess the capability to maintain two distinct temporary shapes and can transition between these shapes when exposed to heat. This study introduces novel ternary polymer blends in<em>co</em>rporating ethylene vinyl acetate copolymer (EVA), maleic anhydride grafted poly(styrene-b-ethylene-butylene-b-styrene) (SEBS-MA), and poly(butyl-<em>co</em>-isobutyl methacrylate) (PBMA-PiBMA) polymers, which exhibit thermo-responsive triple-shape memory properties at 40 °C and 80 °C. The SEBS-MA/EVA/PBMA-PiBMA ternary blend with 30/40/30 composition showed optimal triple-shape memory performance, exhibiting 92.3 % first shape fixing, 88.0 % second shape fixing, 90.5 % first shape recovery and 100 % second shape recovery ratios. The same blend also demonstrated a dual shape memory effect at 80 °C, achieving a shape fixing ratio of 98.6 % and a shape recovery performance of 100 %. Filament of the polymer blend was produced to be used in 3D printers. Using this filament, a hinge, a daisy, a stent, and a robotic gripper were created for use in different 4D printing applications. The 4D-printed objects produced from the ternary blend filament show two-way shape recovery at 40 °C and 80 °C.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"209 ","pages":"Article 106188"},"PeriodicalIF":4.5,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395320","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}

引用次数: 0

Comprehensive performance improvement and functional upgrade of Magnolia-based epoxy resins

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-02-01 DOI: 10.1016/j.reactfunctpolym.2024.106129

Xinru Bai, Zhiyong Li, Yuting Dong, Xinyi Gao, Jingjing Meng

The magnolol- (MEP) and honokiol-epoxy resin (HEP) were prepared from the extract of the natural plant Magnolia officinalis. Those monomers were cured with hardeners, such as 4,4-diamino diphenyl sulfone (DDS) and 4,4′-bis (3-aminophenoxy) diphenyl sulfone (BDS), respectively via solvent-free process to fabricate networks with excellent mechanical properties. The curing procedures occurred in a wide temperature interval (65 °C), which made the concerning vacuum-assisted resin infusion feasible. Notedly, all combinations exhibited increased thermal stability (T_d5, 359.7–381.9 °C) with T_max fluctuating around 450 °C. The phase transition temperature (T_α) screen suggested that except MEP/BDS (T_α, 147.2 °C), other combinations varied from 264.2 °C to 281.2 °C. In addition, DDS allowed the networks with slightly lower thermal expansion coefficients (CTE, 68.1 ppm/ ^oC, <180 °C for HEP/DDS), while the BDS yielded relatively high CTE values (87.1 ppm/ ^oC, <106 °C, for MEP/BDS). The LOI value (33 %) and vertical burning test (UL-94) indicated their outstanding flame retardancy (UL 94 V-0). Furthermore, for MEP/BDS, the unique solvolysis (in DMF or THF) and thermally induced shape memory properties along with the superior flame retardancy demonstrated its overall high performances. As a whole, these performance improvements further facilitate the high-end applications of sustainable resins in cutting-edge areas.

{"title":"Comprehensive performance improvement and functional upgrade of Magnolia-based epoxy resins","authors":"Xinru Bai, Zhiyong Li, Yuting Dong, Xinyi Gao, Jingjing Meng","doi":"10.1016/j.reactfunctpolym.2024.106129","DOIUrl":"10.1016/j.reactfunctpolym.2024.106129","url":null,"abstract":"<div><div>The magnolol- (MEP) and honokiol-epoxy resin (HEP) were prepared from the extract of the natural plant Magnolia officinalis. Those monomers were cured with hardeners, such as 4,4-diamino diphenyl sulfone (DDS) and 4,4′-bis (3-aminophenoxy) diphenyl sulfone (BDS), respectively via solvent-free process to fabricate networks with excellent mechanical properties. The curing procedures occurred in a wide temperature interval (65 °C), which made the concerning vacuum-assisted resin infusion feasible. Notedly, all combinations exhibited increased thermal stability (<em>T</em><sub><em>d5</em></sub>, 359.7–381.9 °C) with <em>T</em><sub><em>max</em></sub> fluctuating around 450 °C. The phase transition temperature (<em>T</em><sub><strong><em>α</em></strong></sub>) screen suggested that except MEP/BDS (<em>T</em><sub><strong><em>α</em></strong></sub>, 147.2 °C), other combinations varied from 264.2 °C to 281.2 °C. In addition, DDS allowed the networks with slightly lower thermal expansion coefficients (<em>CTE,</em> 68.1 ppm/ <sup>o</sup>C, <180 °C for HEP/DDS), while the BDS yielded relatively high <em>CTE</em> values (87.1 ppm/ <sup>o</sup>C, <106 °C, for MEP/BDS). The <em>LOI</em> value (33 %) and vertical burning test (UL-94) indicated their outstanding flame retardancy (UL 94 <em>V</em>-0). Furthermore, for MEP/BDS, the unique solvolysis (in DMF or THF) and thermally induced shape memory properties along with the superior flame retardancy demonstrated its overall high performances. As a whole, these performance improvements further facilitate the high-end applications of sustainable resins in cutting-edge areas.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"207 ","pages":"Article 106129"},"PeriodicalIF":4.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143144832","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}

引用次数: 0

Production of reusable and colorimetric cyanide sensor hydrogels for rapid detection of cyanide ions in various aqueous media

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-02-01 DOI: 10.1016/j.reactfunctpolym.2024.106113

Ozgur Ozay , Hava Ozay

In this study, a new type of (hemi)cyanine dye-derived HC-M monomer suitable for hydrogel synthesis by redox polymerization method was developed and characterized by various methods. The feature of HC-M monomer is that it changes color in the presence of CN⁻ ions. Thus, when added to any hydrogel structure as a comonomer with covalent bonds, hydrogels that are highly sensitive to CN⁻ ions and function colorimetrically can be produced. For this purpose, p(AAm-co-HCM) hydrogels were synthesized. The synthesized hydrogels were characterized by swelling tests, Fourier transform infrared spectroscopy (FTIR), and Scanning Electron Microscopy (SEM) analyses. The synthesized and characterized new type of monomer and p(AAm-co-HCM) hydrogels were used to detect CN⁻ ions in various aqueous media and some liquid foods. For this, various concentrations of CN⁻ in the range of 0.05–100 ppm were used. Thus, a new type of hydrogel structure was produced that qualitatively determines the presence of CN⁻ in any aqueous environment by changing color in the time range of 1–660 min. It has been shown that the resulting hydrogels can be used as sensors many times, suitable for regeneration, thanks to their covalent bonds.

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引用次数: 0

Adsorption behavior of amine-modified cotton stalk extract on Congo red in aqueous solution

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-02-01 DOI: 10.1016/j.reactfunctpolym.2024.106137

Zheng Zhang , Chengbo Zhang , Gang Liu , Daning Lang , Lu Wang , Chao Yang , Jihong Fu , Ronglan Wu , Wei Wang

Selective adsorbent materials for the remediation of printing and dyeing wastewater were successfully prepared from cotton stalks by sodium chlorite pretreatment and vinylamine modification. Its dye adsorption test showed that the cotton stalk-based adsorbent had a unique selective adsorption capacity for Congo red, and the maximum adsorption amount could reach 997.1 mg/g. It is worth noting that the environmental factors, such as pH value, salt ion concentration, and surfactant, had a small influence on the process. Exploring the adsorption mechanism, it was found that the process conformed to the quasi-secondary kinetic model (R² > 0.99) and the Langmuir isotherm model (R² > 0.99), in which electrostatic interactions, π-π, and hydrogen bonding played important roles in the adsorption process. Therefore, this environmentally friendly and efficient adsorbent has a broad application prospect in wastewater treatment.

引用次数: 0

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