Michun Zhong, Qiwei Zheng, Zhiwen Li, Shengwei Fang, Rufan Zhou, Chao Wang, Yumin Ye, Min Xia, Huagang Ni, Yanrong Jia, Peng Ye
ABSTRACT Due to the discharge of oily wastewater and oil extraction activities, the oil content and soluble pollutants in water bodies are increasing, causing serious damage to the environment. Therefore, materials with superhydrophilicity and underwater superhydrophobicity have attracted much attention in the field of oil–water separation. In this study, a graphene oxide (GO) brush (polyacrylic acid [PAA], grafted on GO) high‐efficiency hydrogel oil–water separation membrane with superhydrophilicity in air and superhydrophobicity under water was prepared by regulating the hydrophilicity through nano‐microstructures. Vacuum‐assisted filtration was utilized to prepare GO brushes into membranes. Due to the good hydrophilicity of PAA chains, grafting them onto GO sheets enhanced the hydrophilicity of the membranes and increased the surface roughness. This modification significantly increased the pure water flux of the membrane (maximum value of 428.56 L m −2 h −1 bar −1 ). With the synergistic effect of hydration capacity and layered nanostructures, the GO‐PAA membrane possesses superhydrophobic and underwater superoleophobic properties. As a result, the oil–water separation rate of GO‐PAA2 membrane was greater than 99.12%, which could realize the separation of various oil–water emulsions. Compared with the pristine GO membranes, the graphene brush membranes formed after PAA chain‐branch polymerization have higher stability and durability, stronger hydrophilicity, higher oil–water separation efficiency, and better application prospects.
由于含油废水的排放和采油活动，水体中含油量和可溶性污染物不断增加，对环境造成严重破坏。因此，具有超亲水性和水下超疏水性的材料在油水分离领域备受关注。在本研究中，通过纳米微结构调控亲水性，制备了一种在空气中具有超亲水性和在水中具有超疏水性的氧化石墨烯（GO）刷（聚丙烯酸[PAA]，接枝在GO上）的高效水凝胶油水分离膜。利用真空辅助过滤将氧化石墨烯毛刷制备成膜。由于PAA链具有良好的亲水性，将其接枝到氧化石墨烯片上，增强了膜的亲水性，提高了表面粗糙度。该修饰显著提高了膜的纯水通量（最大值为428.56 L m−2 h−1 bar−1）。在水化能力和层状纳米结构的协同作用下，GO - PAA膜具有超疏水和水下超疏油的特性。结果表明，GO‐PAA2膜的油水分离率大于99.12%，可实现多种油水乳液的分离。与原始氧化石墨烯膜相比，经PAA链支聚合形成的石墨烯刷状膜具有更高的稳定性和耐久性，更强的亲水性，更高的油水分离效率，具有更好的应用前景。
{"title":"Highly Efficient Hydrogel Oil–Water Separation Membranes Prepared by Superhydrophilic Graphene Oxide Brushes","authors":"Michun Zhong, Qiwei Zheng, Zhiwen Li, Shengwei Fang, Rufan Zhou, Chao Wang, Yumin Ye, Min Xia, Huagang Ni, Yanrong Jia, Peng Ye","doi":"10.1002/pat.70082","DOIUrl":"https://doi.org/10.1002/pat.70082","url":null,"abstract":"ABSTRACT Due to the discharge of oily wastewater and oil extraction activities, the oil content and soluble pollutants in water bodies are increasing, causing serious damage to the environment. Therefore, materials with superhydrophilicity and underwater superhydrophobicity have attracted much attention in the field of oil–water separation. In this study, a graphene oxide (GO) brush (polyacrylic acid [PAA], grafted on GO) high‐efficiency hydrogel oil–water separation membrane with superhydrophilicity in air and superhydrophobicity under water was prepared by regulating the hydrophilicity through nano‐microstructures. Vacuum‐assisted filtration was utilized to prepare GO brushes into membranes. Due to the good hydrophilicity of PAA chains, grafting them onto GO sheets enhanced the hydrophilicity of the membranes and increased the surface roughness. This modification significantly increased the pure water flux of the membrane (maximum value of 428.56 L m −2 h −1 bar −1 ). With the synergistic effect of hydration capacity and layered nanostructures, the GO‐PAA membrane possesses superhydrophobic and underwater superoleophobic properties. As a result, the oil–water separation rate of GO‐PAA2 membrane was greater than 99.12%, which could realize the separation of various oil–water emulsions. Compared with the pristine GO membranes, the graphene brush membranes formed after PAA chain‐branch polymerization have higher stability and durability, stronger hydrophilicity, higher oil–water separation efficiency, and better application prospects.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"36 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT Due to low surface energy, high chemical inertness, and poor interfacial properties of ultra‐high molecular weight polyethylene (UHMWPE) fibers, it was difficult to achieve good adhesion with the matrix interface. Surface coating modification based on polydopamine (PDA) was widely applied to build high‐performance and specifically functional surface modifications. In order to improve the interfacial adhesion between UHMWPE fibers and epoxy resin, this study used a one‐step process with ammonium polyphosphate (APP) as a template to deposit a hybrid coating of PDA and N ‐(2‐aminoethyl)‐3‐aminopropyltrimethoxysilane (KH792)/3‐aminopropyltriethoxysilane (KH550)/nano silicon carbide (SiC) on the surface of UHMWPE fibers. Additionally, corona treatment was applied to increase oxygen‐containing functional groups on fibers while also improving the processing technology of composites. Due to the polymerization of PDA, the deposition of SiC, and the hydrolysis‐condensation of silanes, the nanohybrid coating can provide rich connection points and nanoparticles for hybrid fabrics without affecting the inherent strength of fibers. Corona improved surface roughness, and hybrid coatings enhanced the interfacial adhesion between the resin matrix and fibers. The UHMWPE fiber/epoxy composite material after improved composite technology exhibited excellent mechanical properties. Compared with untreated composite laminates, interfacial shear strength (IFSS) was increased by 88.81%, flexural strength was enhanced by 87.89%, impact strength was improved by 64.39%, and tensile strength was raised by 26.58%. The study showed that the nanohybrid coating co‐deposited with PDA and corona enhanced the interfacial bond between epoxy resin and UHMWPE fibers, increased relative friction at the fracture interface, and improved load transfer between UHMWPE fibers and matrix.
{"title":"Polydopamine by <scp>APP</scp> Template With <scp>SiC</scp> and Silane Hybrid Coating One‐Step Co‐Deposited <scp>UHMWPE</scp> Fibers and Corona Reinforced Epoxy Composites","authors":"K.X. Yu, Fanmin Kong, Guodong Jiang","doi":"10.1002/pat.70151","DOIUrl":"https://doi.org/10.1002/pat.70151","url":null,"abstract":"ABSTRACT Due to low surface energy, high chemical inertness, and poor interfacial properties of ultra‐high molecular weight polyethylene (UHMWPE) fibers, it was difficult to achieve good adhesion with the matrix interface. Surface coating modification based on polydopamine (PDA) was widely applied to build high‐performance and specifically functional surface modifications. In order to improve the interfacial adhesion between UHMWPE fibers and epoxy resin, this study used a one‐step process with ammonium polyphosphate (APP) as a template to deposit a hybrid coating of PDA and N ‐(2‐aminoethyl)‐3‐aminopropyltrimethoxysilane (KH792)/3‐aminopropyltriethoxysilane (KH550)/nano silicon carbide (SiC) on the surface of UHMWPE fibers. Additionally, corona treatment was applied to increase oxygen‐containing functional groups on fibers while also improving the processing technology of composites. Due to the polymerization of PDA, the deposition of SiC, and the hydrolysis‐condensation of silanes, the nanohybrid coating can provide rich connection points and nanoparticles for hybrid fabrics without affecting the inherent strength of fibers. Corona improved surface roughness, and hybrid coatings enhanced the interfacial adhesion between the resin matrix and fibers. The UHMWPE fiber/epoxy composite material after improved composite technology exhibited excellent mechanical properties. Compared with untreated composite laminates, interfacial shear strength (IFSS) was increased by 88.81%, flexural strength was enhanced by 87.89%, impact strength was improved by 64.39%, and tensile strength was raised by 26.58%. The study showed that the nanohybrid coating co‐deposited with PDA and corona enhanced the interfacial bond between epoxy resin and UHMWPE fibers, increased relative friction at the fracture interface, and improved load transfer between UHMWPE fibers and matrix.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"36 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT Photothermal therapy is a promising adjunctive treatment technique requiring a nanoplatform with excellent biocompatibility, photothermal stability, and precise targeting capabilities. This study aims to develop such a nanoplatform by synthesizing two new manganese(II)‐based coordination polymers. The polymers were created by integrating 1,4‐bis(imidazol‐1‐yl)benzene with the ternary ligand tris( p ‐carboxyphenyl)phosphane oxide, resulting in the formulas {[Mn 3 (L) 2 (bib) 3 (H 2 O) 7 ]·12H 2 O} n (CP 1 ) and {[Mn(HL)(bib)]·H 2 O} n (CP 2 ). These structures, with large surface areas and porosity, enhance drug loading efficiency. Doxorubicin (DOX) was successfully incorporated into a biocompatible HA/CMCS hydrogel‐CP composite (HA/CMCS‐CPs@DOX), forming a robust nanotherapeutic platform. Under near‐infrared light irradiation, these metal‐hydrogel composites effectively induced localized hyperthermia, aiding ocular melanoma treatment. We evaluated the effect of HA/CMCS‐CP 2 @DOX on the cell proliferation of the uveal melanoma cell line, and the regulatory effects of the system on lncRNA ARAP1‐AS1/miR‐149‐3p/S100A4 were also explored.
{"title":"Metal Complex Hydrogel as a Dual Functional Photothermal Platform for In Vitro Doxorubicin Delivery in Ocular Melanoma Treatment","authors":"Ping Xie, Jing He, Yangjun Ou","doi":"10.1002/pat.70136","DOIUrl":"https://doi.org/10.1002/pat.70136","url":null,"abstract":"ABSTRACT Photothermal therapy is a promising adjunctive treatment technique requiring a nanoplatform with excellent biocompatibility, photothermal stability, and precise targeting capabilities. This study aims to develop such a nanoplatform by synthesizing two new manganese(II)‐based coordination polymers. The polymers were created by integrating 1,4‐bis(imidazol‐1‐yl)benzene with the ternary ligand tris( p ‐carboxyphenyl)phosphane oxide, resulting in the formulas {[Mn 3 (L) 2 (bib) 3 (H 2 O) 7 ]·12H 2 O} n (CP 1 ) and {[Mn(HL)(bib)]·H 2 O} n (CP 2 ). These structures, with large surface areas and porosity, enhance drug loading efficiency. Doxorubicin (DOX) was successfully incorporated into a biocompatible HA/CMCS hydrogel‐CP composite (HA/CMCS‐CPs@DOX), forming a robust nanotherapeutic platform. Under near‐infrared light irradiation, these metal‐hydrogel composites effectively induced localized hyperthermia, aiding ocular melanoma treatment. We evaluated the effect of HA/CMCS‐CP 2 @DOX on the cell proliferation of the uveal melanoma cell line, and the regulatory effects of the system on lncRNA ARAP1‐AS1/miR‐149‐3p/S100A4 were also explored.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"36 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pat.70136","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT Polyurethanes based on hydroxyl‐terminated polybutadiene (HTPB) have been utilized as liners in solid rocket motors due to their compatibility with propellant systems and flexible mechanical properties. However, enhancing the liners' thermal stability and mechanical strength remains a significant challenge in extreme operational environments. This study focuses on the development of an advanced composite liner for solid rocket motors (SRMs) based on HTPB and cerium oxide (CeO₂) reinforced polyurethanes (PUs). The novel HTPB/CeO₂ polyurethane composite has been synthesized to enhance the mechanical and thermal properties essential for high‐performance SRMs. These composites were characterized using Fourier transform infrared spectroscopy (FTIR), rheological analysis, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), mechanical testing, x‐ray diffraction (XRD), thermal conductivity measurements, and the limited oxygen index (LOI). With increasing CeO₂ content, the pot life decreased from 377 to 201 min. In contrast, thermal stability, as indicated by T₅%, improved from 321°C to 357°C. The inclusion of CeO₂ altered the amorphous nature of the PU composites, as confirmed by both DSC and XRD results. Additionally, tensile strength increased from 3.89 to 7.94 MPa, and elongation at break increased from 495% to 600% at a CeO₂ loading of 9% before decreasing to 362% at 12% loading. CeO₂ acted as a reinforcing agent and contributed to improving flame retardancy. These findings confirm the potential of the HTPB/CeO₂‐based composite liner to outperform traditional materials in terms of mechanical properties, thermal stability, and flame retardancy.
{"title":"Development of High‐Performance <scp>HTPB</scp> and Cerium Oxide‐Based Polyurethane Composite Liners for Solid Rocket Motors","authors":"Naveed Ahmad Tahir, Syazana Ahmad Zubir","doi":"10.1002/pat.70117","DOIUrl":"https://doi.org/10.1002/pat.70117","url":null,"abstract":"ABSTRACT Polyurethanes based on hydroxyl‐terminated polybutadiene (HTPB) have been utilized as liners in solid rocket motors due to their compatibility with propellant systems and flexible mechanical properties. However, enhancing the liners' thermal stability and mechanical strength remains a significant challenge in extreme operational environments. This study focuses on the development of an advanced composite liner for solid rocket motors (SRMs) based on HTPB and cerium oxide (CeO₂) reinforced polyurethanes (PUs). The novel HTPB/CeO₂ polyurethane composite has been synthesized to enhance the mechanical and thermal properties essential for high‐performance SRMs. These composites were characterized using Fourier transform infrared spectroscopy (FTIR), rheological analysis, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), mechanical testing, x‐ray diffraction (XRD), thermal conductivity measurements, and the limited oxygen index (LOI). With increasing CeO₂ content, the pot life decreased from 377 to 201 min. In contrast, thermal stability, as indicated by T₅%, improved from 321°C to 357°C. The inclusion of CeO₂ altered the amorphous nature of the PU composites, as confirmed by both DSC and XRD results. Additionally, tensile strength increased from 3.89 to 7.94 MPa, and elongation at break increased from 495% to 600% at a CeO₂ loading of 9% before decreasing to 362% at 12% loading. CeO₂ acted as a reinforcing agent and contributed to improving flame retardancy. These findings confirm the potential of the HTPB/CeO₂‐based composite liner to outperform traditional materials in terms of mechanical properties, thermal stability, and flame retardancy.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"36 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pat.70117","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT Four polyether ester plasticizers containing both ester groups and ether bonds were synthesized using 1,4‐butanediol, adipic acid, and alkyl ether alcohols as raw materials. By varying the type of end‐capping alcohol ether, the following plasticizers were prepared: poly (butylene adipate dibutyl ether) (PBADBE), poly (butylene adipate butyl ether) (PBABE), poly (butylene adipate dimethyl ether) (PBADME), and poly (butylene adipate methyl ether) (PBAME). These plasticizers were characterized by Fourier transform infrared (FTIR) spectroscopy, proton nuclear magnetic resonance spectroscopy ( 1 H‐NMR), and thermogravimetric (TG) analysis. Furthermore, their differences in cold resistance, heat resistance, and physical‐mechanical properties in hydrogenated nitrile‐butadiene rubber (HNBR) were investigated. The results showed that among the rubber compounds containing the four polyether‐ester plasticizers, the compound with PBADME demonstrated superior heat resistance and low‐temperature performance. Specifically, the PBADME‐containing compound exhibited a TR 10 temperature of −39.9°C and a brittleness temperature of −54°C. This significantly broadened the operating temperature range of the plasticizer, making it suitable for applications requiring both high‐temperature and low‐temperature performance.
{"title":"Synthesis of Polyether Ester Plasticizer and Its Application Performance in Hydrogenated Nitrile Butadiene Rubber","authors":"Hui Li, Zhibin Wang, Yuqing Song, Xiao Jian-bin, Qi Chen","doi":"10.1002/pat.70090","DOIUrl":"https://doi.org/10.1002/pat.70090","url":null,"abstract":"ABSTRACT Four polyether ester plasticizers containing both ester groups and ether bonds were synthesized using 1,4‐butanediol, adipic acid, and alkyl ether alcohols as raw materials. By varying the type of end‐capping alcohol ether, the following plasticizers were prepared: poly (butylene adipate dibutyl ether) (PBADBE), poly (butylene adipate butyl ether) (PBABE), poly (butylene adipate dimethyl ether) (PBADME), and poly (butylene adipate methyl ether) (PBAME). These plasticizers were characterized by Fourier transform infrared (FTIR) spectroscopy, proton nuclear magnetic resonance spectroscopy ( 1 H‐NMR), and thermogravimetric (TG) analysis. Furthermore, their differences in cold resistance, heat resistance, and physical‐mechanical properties in hydrogenated nitrile‐butadiene rubber (HNBR) were investigated. The results showed that among the rubber compounds containing the four polyether‐ester plasticizers, the compound with PBADME demonstrated superior heat resistance and low‐temperature performance. Specifically, the PBADME‐containing compound exhibited a TR 10 temperature of −39.9°C and a brittleness temperature of −54°C. This significantly broadened the operating temperature range of the plasticizer, making it suitable for applications requiring both high‐temperature and low‐temperature performance.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"36 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT The accumulation of copper ions in the environment can devastate the ecological systems and threaten the health of organisms. Consequently, the development of effective adsorbents to extract Cu 2+ from aqueous solutions is urgently needed. Here, the Zeolitic Imidazolate Framework‐8 (ZIF‐8)/polyacrylonitrile (PAN) nanocomposite fibers were synthesized by electrospinning and further characterized using X‐ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). ZIF‐8 powders were uniformly distributed on the surface of the nanocomposite fibers, and amide CONH bonds were formed between the NH 2 groups of ZIF‐8 and the CO groups of PAN. The ZIF‐8/PAN nanocomposite fibers demonstrated an exceptional Cu 2+ adsorption capacity of 275.7 mg g −1 at pH = 4.0. The adsorption process adhered to the pseudo‐second‐order kinetics and the Langmuir isotherm model. The adsorption mechanism, as conformed by FTIR and X‐ray photoelectron spectroscopy (XPS) analysis, involves the coordination of the NH 2 and CO groups with Cu 2+ and the ion exchange processes between Cu 2+ and Zn 2+ for the nanocomposite fibers. This study provides a novel approach for the removal of Cu 2+ from aqueous solutions and addresses the challenge of recovering powder materials in wastewater treatment.
{"title":"Mechanism Insights Into High‐Performance Cu<sup>2+</sup> Adsorption by <scp>ZIF</scp>‐8/<scp>PAN</scp> Nanocomposite Fibers: Coordination and Ion Exchange Dynamics","authors":"Hailong Zhang, Ruimeng Li, Haishui Xu, Ling Quan, Chengyu Zhan, Peng Han, Kehan Xu, Yuping Tong","doi":"10.1002/pat.70068","DOIUrl":"https://doi.org/10.1002/pat.70068","url":null,"abstract":"ABSTRACT The accumulation of copper ions in the environment can devastate the ecological systems and threaten the health of organisms. Consequently, the development of effective adsorbents to extract Cu 2+ from aqueous solutions is urgently needed. Here, the Zeolitic Imidazolate Framework‐8 (ZIF‐8)/polyacrylonitrile (PAN) nanocomposite fibers were synthesized by electrospinning and further characterized using X‐ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). ZIF‐8 powders were uniformly distributed on the surface of the nanocomposite fibers, and amide CONH bonds were formed between the NH 2 groups of ZIF‐8 and the CO groups of PAN. The ZIF‐8/PAN nanocomposite fibers demonstrated an exceptional Cu 2+ adsorption capacity of 275.7 mg g −1 at pH = 4.0. The adsorption process adhered to the pseudo‐second‐order kinetics and the Langmuir isotherm model. The adsorption mechanism, as conformed by FTIR and X‐ray photoelectron spectroscopy (XPS) analysis, involves the coordination of the NH 2 and CO groups with Cu 2+ and the ion exchange processes between Cu 2+ and Zn 2+ for the nanocomposite fibers. This study provides a novel approach for the removal of Cu 2+ from aqueous solutions and addresses the challenge of recovering powder materials in wastewater treatment.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT Triphenylmethane dyes have a wide range of applications in textiles, pharmaceuticals, food, and other fields. Malachite green (MG), fuchsin acid (FA), and crystalline violet (CV) were typical representatives of triphenylmethane dyes, and they are carcinogenic and mutagenic to aquatic organisms and environment. However, they need to be separated and enriched for their accurate quantification due to their low content. Therefore, it is important to develop a rapid and accurate enrichment method to monitor these dyes in aquatic systems for human health. In this paper, a novel QuEChERS adsorbent porous ZIF67/PAA/PES composite microspheres were prepared and applied for the rapid adsorption of triphenylmethane dyes in wastewater and fish samples, which improved the adsorption capacity and the analytical sensitivity of the targets. The experimental results demonstrated that the porous ZIF‐67/PAA/PES composite microspheres exhibited excellent selective adsorption capacity of MG, FA, and CV, and after six adsorption–desorption cycles, the material adsorption amount can reach more than 90% of its original adsorption amount in wastewater. In addition, the porous ZIF67/PAA/PES composite microspheres were applied as QuEChERS adsorbents for the enrichment of MG and CV dyes in fish, and the adsorption rates of the dyes were 99.11% and 99.03%, with the RSDs of 1.58% and 1.27%, respectively. The limits of detection were 0.0093 and 0.0127 mg/L for MG and CV. Through the Langmuir adsorption isotherm models to predict the MG, FA, and CV of the maximum adsorption capacity were 5417.3622, 2119.9011, and 1654.1026 mg/g, respectively. Thus, the novel porous ZIF67/PAA/PES composite microspheres are more advantageous as QuEChERS adsorbents for sample pre‐treatment and have very important research significance.
{"title":"Preparation of Porous Novel <scp>QuEChERS</scp> Adsorbent <scp>ZIF</scp>‐67/<scp>PAA</scp>/<scp>PES</scp> Composite Microspheres and Their Application for Rapid Adsorption of Triphenylmethane Dyes in Wastewater and Fish","authors":"Xiaotian Wang, Yeerken Aheyeli‐kai, Hao Ying, Jiangli Lin, Yulu Luo, Hongying Ma, Zhongyang Li, Zhen Su","doi":"10.1002/pat.70031","DOIUrl":"https://doi.org/10.1002/pat.70031","url":null,"abstract":"ABSTRACT Triphenylmethane dyes have a wide range of applications in textiles, pharmaceuticals, food, and other fields. Malachite green (MG), fuchsin acid (FA), and crystalline violet (CV) were typical representatives of triphenylmethane dyes, and they are carcinogenic and mutagenic to aquatic organisms and environment. However, they need to be separated and enriched for their accurate quantification due to their low content. Therefore, it is important to develop a rapid and accurate enrichment method to monitor these dyes in aquatic systems for human health. In this paper, a novel QuEChERS adsorbent porous ZIF67/PAA/PES composite microspheres were prepared and applied for the rapid adsorption of triphenylmethane dyes in wastewater and fish samples, which improved the adsorption capacity and the analytical sensitivity of the targets. The experimental results demonstrated that the porous ZIF‐67/PAA/PES composite microspheres exhibited excellent selective adsorption capacity of MG, FA, and CV, and after six adsorption–desorption cycles, the material adsorption amount can reach more than 90% of its original adsorption amount in wastewater. In addition, the porous ZIF67/PAA/PES composite microspheres were applied as QuEChERS adsorbents for the enrichment of MG and CV dyes in fish, and the adsorption rates of the dyes were 99.11% and 99.03%, with the RSDs of 1.58% and 1.27%, respectively. The limits of detection were 0.0093 and 0.0127 mg/L for MG and CV. Through the Langmuir adsorption isotherm models to predict the MG, FA, and CV of the maximum adsorption capacity were 5417.3622, 2119.9011, and 1654.1026 mg/g, respectively. Thus, the novel porous ZIF67/PAA/PES composite microspheres are more advantageous as QuEChERS adsorbents for sample pre‐treatment and have very important research significance.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I. Kingstone Lesley Jabez, Urmila Das, Nakka Sudarshan, R. Sheena Rani, B. V. Paparao
Novel methodology introduced to incorporate peroxide in the rubber matrix led to successful development of peroxide cured EPDM insulation based on precipitated silica, a conventional filler. Effect of Silica Filler on the physical, mechanical, thermal, ablative properties and thermal degradation of such an insulation has been recently published. As an outcome of above study, peroxide cured EPDM insulation with 25 PHR of Silica, has been promulgated as potential low density insulation meeting all the requirements of Large Rocket Motor, while having a density as low as 0.997 g/cm3 and Tg as low as −55°C. Effect of aging on mechanical, thermal properties and thermal degradation behavior of low density peroxide cured EPDM insulation has been studied and the findings have been corroborated by FTIR Spectroscopy and morphological Examination by SEM.
{"title":"Age resistant low density peroxide cured EPDM rubber insulation for large rocket motors","authors":"I. Kingstone Lesley Jabez, Urmila Das, Nakka Sudarshan, R. Sheena Rani, B. V. Paparao","doi":"10.1002/pat.6585","DOIUrl":"https://doi.org/10.1002/pat.6585","url":null,"abstract":"Novel methodology introduced to incorporate peroxide in the rubber matrix led to successful development of peroxide cured EPDM insulation based on precipitated silica, a conventional filler. Effect of Silica Filler on the physical, mechanical, thermal, ablative properties and thermal degradation of such an insulation has been recently published. As an outcome of above study, peroxide cured EPDM insulation with 25 PHR of Silica, has been promulgated as potential low density insulation meeting all the requirements of Large Rocket Motor, while having a density as low as 0.997 g/cm<jats:sup>3</jats:sup> and <jats:italic>T</jats:italic><jats:sub>g</jats:sub> as low as −55°C. Effect of aging on mechanical, thermal properties and thermal degradation behavior of low density peroxide cured EPDM insulation has been studied and the findings have been corroborated by FTIR Spectroscopy and morphological Examination by SEM.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"10 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study presents the preparation, hydrogel kinetics, and mechanical analysis of Boron Nitride (BN) reinforced PVA/PVP/PEO‐BN hydrogel composite films using Polyvinyl alcohol (PVA), Polyvinyl pyrrolidone (PVP), and Polyethylene oxide (PEO) commercial polymers. Dynamic mechanical analysis tests reveal that PVA90PEO5PVP5‐BN composite films exhibit plastic‐viscoelastic behavior under a maximum force of 18 N. The Young's Modulus values for PVA90PEO5PVP5, PVA90PEO5PVP5‐BN%10, and PVA90PEO5PVP5‐BN%20 are 0.22, 0.32, and 0.44 MPa, respectively. The highest % Strain value is observed in PVA90PEO5PVP5‐BN%20, reaching 279.80%. In the hydrogel kinetics study, Schott's and Fickian models are utilized. The regression from the Fickian model is quite low, with exponential diffusion index, n, values lower than 0.5, indicating a classical Fickian water diffusion mechanism. Schott's model provides graphs with significantly higher regression compared to the Fickian model. The results indicate compatibility with the other model and confirm the presence of water‐based diffusion. Equilibrium swelling values (Se, g H2O/g gel) are 6.71, 7.03, and 7.91 for PVA90PEO5PVP5, PVA90PEO5PVP5, PVA90PEO5PVP5‐BN%10, and PVA90PEO5PVP5‐BN%20, respectively. Differential Scanning Calorimetry (DSC) analysis results show that the glass transition temperatures, Tg, are 52.37, 60.20, and 63.05°C for PVA90PEO5PVP5, PVA90PEO5PVP5‐BN%10, and PVA90PEO5PVP5‐BN%20, respectively.
{"title":"Preparation, mechanical analysis and investigation of swelling behavior of boron nitride reinforced hydrogel polymer composite films","authors":"Fehmi Saltan","doi":"10.1002/pat.6588","DOIUrl":"https://doi.org/10.1002/pat.6588","url":null,"abstract":"This study presents the preparation, hydrogel kinetics, and mechanical analysis of Boron Nitride (BN) reinforced PVA/PVP/PEO‐BN hydrogel composite films using Polyvinyl alcohol (PVA), Polyvinyl pyrrolidone (PVP), and Polyethylene oxide (PEO) commercial polymers. Dynamic mechanical analysis tests reveal that PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>‐BN composite films exhibit plastic‐viscoelastic behavior under a maximum force of 18 N. The Young's Modulus values for PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>, PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>‐BN<jats:sub>%10</jats:sub>, and PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>‐BN<jats:sub>%20</jats:sub> are 0.22, 0.32, and 0.44 MPa, respectively. The highest % Strain value is observed in PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>‐BN<jats:sub>%20</jats:sub>, reaching 279.80%. In the hydrogel kinetics study, Schott's and Fickian models are utilized. The regression from the Fickian model is quite low, with exponential diffusion index, <jats:italic>n</jats:italic>, values lower than 0.5, indicating a classical Fickian water diffusion mechanism. Schott's model provides graphs with significantly higher regression compared to the Fickian model. The results indicate compatibility with the other model and confirm the presence of water‐based diffusion. Equilibrium swelling values (Se, g H<jats:sub>2</jats:sub>O/g gel) are 6.71, 7.03, and 7.91 for PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>, PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>, PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>‐BN<jats:sub>%10</jats:sub>, and PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>‐BN<jats:sub>%20</jats:sub>, respectively. Differential Scanning Calorimetry (DSC) analysis results show that the glass transition temperatures, Tg, are 52.37, 60.20, and 63.05°C for PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>, PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>‐BN<jats:sub>%10</jats:sub>, and PVA<jats:sub>90</jats:sub>PEO<jats:sub>5</jats:sub>PVP<jats:sub>5</jats:sub>‐BN<jats:sub>%20</jats:sub>, respectively.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"31 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The phenolic‐type phthalonitrile (PN) was added to EP/DDM system in order to enhance the thermal and mechanical performance at high temperature. The influence of the added PN on the curing process of EP/DDM was studied via DSC and the activating energy (Eα) was calculated based on iso‐conversional method. The Eα values corresponding to EP/DDM crosslink reaction remained at about 60 kJ mol−1 while it dramatically increased to 68.2 kJ mol−1 when PN content reached 50 wt% (EP‐PN50). The Tg and char yield at 700°C in N2 increased from141°C, 25.7%, for the neat EP/DDM to 226°C, 68.7% for the EP‐PN50. The measured char yields of the cured blend were higher than the calculated values which implies the interaction between EP/DDM and polyphthalonitrile network. The tensile and bending tests were carried out at 413 K and the modulus of EP‐PN50 remains 2.3 Gpa. On the meantime, the cyano‐functionalized SiO2 (CNSiO2) was prepared to further promote the mechanical behaviors of this resin blend in high temperature. The contact angles of raw SiO2, KH560SiO2, CNSiO2 with EP‐PN50 are 59.3, 52.6, 49.7°, respectively, which confirms the better wettability of CNSiO2 to the EP/PN blend. Furthermore, the tensile and bending tests conducted at 413 K confirmed that the CNSiO2 was more efficient on enhancing the mechanical performance of this EP/DDM/PN system at high temperature.
{"title":"Promotion on the thermal and mechanical behaviors of epoxy resin using phthalonitrile and functionalized‐SiO2","authors":"Shouhui Wu, Cong Peng, Zhanjun Wua","doi":"10.1002/pat.6579","DOIUrl":"https://doi.org/10.1002/pat.6579","url":null,"abstract":"The phenolic‐type phthalonitrile (PN) was added to EP/DDM system in order to enhance the thermal and mechanical performance at high temperature. The influence of the added PN on the curing process of EP/DDM was studied via DSC and the activating energy (<jats:italic>E</jats:italic><jats:sub>α</jats:sub>) was calculated based on iso‐conversional method. The <jats:italic>E</jats:italic><jats:sub>α</jats:sub> values corresponding to EP/DDM crosslink reaction remained at about 60 kJ mol<jats:sup>−1</jats:sup> while it dramatically increased to 68.2 kJ mol<jats:sup>−1</jats:sup> when PN content reached 50 wt% (EP‐PN50). The <jats:italic>T</jats:italic><jats:sub>g</jats:sub> and char yield at 700°C in N<jats:sub>2</jats:sub> increased from141°C, 25.7%, for the neat EP/DDM to 226°C, 68.7% for the EP‐PN50. The measured char yields of the cured blend were higher than the calculated values which implies the interaction between EP/DDM and polyphthalonitrile network. The tensile and bending tests were carried out at 413 K and the modulus of EP‐PN50 remains 2.3 Gpa. On the meantime, the cyano‐functionalized SiO<jats:sub>2</jats:sub> (CNSiO<jats:sub>2</jats:sub>) was prepared to further promote the mechanical behaviors of this resin blend in high temperature. The contact angles of raw SiO<jats:sub>2</jats:sub>, KH560SiO<jats:sub>2</jats:sub>, CNSiO<jats:sub>2</jats:sub> with EP‐PN50 are 59.3, 52.6, 49.7°, respectively, which confirms the better wettability of CNSiO<jats:sub>2</jats:sub> to the EP/PN blend. Furthermore, the tensile and bending tests conducted at 413 K confirmed that the CNSiO<jats:sub>2</jats:sub> was more efficient on enhancing the mechanical performance of this EP/DDM/PN system at high temperature.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"4 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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