RSC Applied Polymers最新文献_第4页

Reprocessable, recyclable and shape programmable epoxy vitrimers†

RSC Applied Polymers Pub Date : 2024-11-08 DOI: 10.1039/D4LP00216D

Hongxin Yao, Hongjun Yang, Li Jiang, Wenyan Huang, Qimin Jiang, Bibiao Jiang and Guangzhao Zhang

引用次数: 0

Water-harvesting polymer coatings for plant leaves†

RSC Applied Polymers Pub Date : 2024-11-07 DOI: 10.1039/D4LP00249K

Roland Milatz, Carmen Reink, Tomas E. van den Berg, Joost Duvigneau, G. Julius Vancso and Frederik R. Wurm

{"title":"Water-harvesting polymer coatings for plant leaves†","authors":"Roland Milatz, Carmen Reink, Tomas E. van den Berg, Joost Duvigneau, G. Julius Vancso and Frederik R. Wurm","doi":"10.1039/D4LP00249K","DOIUrl":"https://doi.org/10.1039/D4LP00249K","url":null,"abstract":"Climate change-induced water scarcity threatens global plant life and agricultural productivity. Here, we present a novel atmospheric water harvesting (AWH) coating designed to alleviate heat and dry stress potentially. This polymer coating utilizes block copolymers carrying catechol-anchoring groups, specifically poly(dopamine methacrylamide) (PDOMA), to adhere to plant leaves. As a hydrophilic block, either poly((oligoethylene glycol) methacrylate) (POEGMA) or the thermoresponsive block poly(N-isopropylacrylamide) (PNIPAM) was used, which can adsorb water from the air during cooler periods in its hydrophilic state. As the temperature increases above the lower critical solution temperature (LCST) of PNIPAM, the polymer transitions to a hydrophobic state, releasing the captured water to the leaf surface. We synthesized PNIPAM-b-PDOMA copolymers via RAFT polymerization and confirmed their composition (IR, 1H NMR and 1H DOSY NMR spectroscopy) with a cloud point temperature of 33 ± 1 °C. The coatings were applied to model substrates (SiO2, polyethylene) and corn leaves. Compared to uncoated controls, coated substrates demonstrated a substantial increase in water uptake from humid air, absorbing up to 50 wt% of the coating's weight. The coating's adherence and thermoresponsive behavior were confirmed on corn leaves through contact angle measurements, showing a shift from hydrophilic (29 ± 3°) below the LCST to hydrophobic (80 ± 2°) above the LCST, closer to the native, hydrophobic leaf (110 ± 10°). Crucially, photosynthesis induction experiments revealed that the coating did not negatively impact the plant's natural photosynthetic processes. This study establishes a promising copolymer platform for developing AWH coatings to support plants in the face of increasing drought conditions.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 1","pages":" 173-180"},"PeriodicalIF":0.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lp/d4lp00249k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancements in polymer nanoconfinement: tailoring material properties for advanced technological applications 聚合物纳米强化技术的进展：为先进技术应用定制材料特性

RSC Applied Polymers Pub Date : 2024-10-31 DOI: 10.1039/D4LP00234B

Alberto Alvarez-Fernandez and Jon Maiz

引用次数: 0

Preparation of 4D hydrogels with PET-RAFT and orthogonal photo-reactions†

RSC Applied Polymers Pub Date : 2024-10-25 DOI: 10.1039/D4LP00232F

Chanhyuk Jee, Hikaru Matsumoto, Tasuku Horiuchi, Zaiyang Liu, Zhongkui Wang, Obayashi Kakeru, Ken Kojio, Masanori Nagao and Yoshiko Miura

引用次数: 0

Contrasting interchain order and mixed ionic–electronic conduction in conjugated polymers: an isoindigo case study† 共轭聚合物中的链间秩序对比和离子-电子混合传导：异靛蓝案例研究†。

RSC Applied Polymers Pub Date : 2024-10-22 DOI: 10.1039/D4LP00272E

Rebecca F. Meacham, Heejung Roh, Camille E. Cunin, Eric R. Lee, Wenhao Li, Yan Zhao, Sanket Samal and Aristide Gumyusenge

{"title":"Contrasting interchain order and mixed ionic–electronic conduction in conjugated polymers: an isoindigo case study†","authors":"Rebecca F. Meacham, Heejung Roh, Camille E. Cunin, Eric R. Lee, Wenhao Li, Yan Zhao, Sanket Samal and Aristide Gumyusenge","doi":"10.1039/D4LP00272E","DOIUrl":"https://doi.org/10.1039/D4LP00272E","url":null,"abstract":"In mixed ionic–electronic conductive polymers, electronic conduction is optimal in tightly packed flat chains, while ionic conduction benefits from free volume accommodating large ions. To this end, polymers with high crystallinity are often excluded from structure–property studies of high-performing mixed conductors due to their unbalanced transport, which favors electronic charges over ionic ones. Herein, we investigated how mixed conduction can be achieved in ordered conjugated polymers by systematically combining interchain order with side chain engineering. We synthesized a series of isoindigo (IID)-based copolymers with varying amounts of aliphatic and hydrophilic side chains and examined the impact of interchain order on mixed conduction. Through crystallographic, spectro-electrochemical, and molecular dynamics studies, we demonstrated that systematically introducing hydrophilic side chains reduces the bulk order and long-range aggregation by increasing chain flexibility while preserving the interchain stacking distances within crystalline domains. Testing these IID polymers in transistor devices revealed that ion insertion and device transconductance strongly depend on the amount of hydrophilic side chains. We demonstrated that glycol side chains can enhance mixed conduction while maintaining interchain order. Our findings suggest that the IID system is promising for designing polymers that can accommodate ionic species without compromising the chain ordering required for electronic conduction.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 6","pages":" 1193-1201"},"PeriodicalIF":0.0,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lp/d4lp00272e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A polyamide and polyethylene multilayer composite with enhanced barrier and mechanical properties at high temperature† 在高温下具有更强阻隔性和机械性能的聚酰胺和聚乙烯多层复合材料†。

RSC Applied Polymers Pub Date : 2024-10-15 DOI: 10.1039/D4LP00220B

Weiqing Fang, Yu Hui Cheng, Adam Pearson, Yige Huang, Ashkan Dargahi, Mark Duncan, Joel Runka, Ahmed Hammami and Hani E. Naguib

{"title":"A polyamide and polyethylene multilayer composite with enhanced barrier and mechanical properties at high temperature†","authors":"Weiqing Fang, Yu Hui Cheng, Adam Pearson, Yige Huang, Ashkan Dargahi, Mark Duncan, Joel Runka, Ahmed Hammami and Hani E. Naguib","doi":"10.1039/D4LP00220B","DOIUrl":"https://doi.org/10.1039/D4LP00220B","url":null,"abstract":"An advanced multilayer thermoplastic composite, composed of Polyethylene of Raised Temperature (PERT), Polyamide 12 (PA12), and Maleic Anhydride Grafted Polyethylene (MA), has been developed for high-temperature, high-pressure applications. An adhesive layer consisting of 35–60–5 wt% PERT-PA12-MA (Blend), has been tailored to optimize adhesive strength between PERT and PA12 layers. The developed three-layer composite (Trilayer) demonstrated exceptional water vapor and CO2 barrier properties by incorporating PERT as a water transmission retarder and PA12 as a CO2 diffusion retarder. At 82 °C, the water vapor transmission rate and CO2 permeability of Trilayer samples were 58%, and 31% lower than those of the Blend, respectively. The Trilayer samples exhibited an average Young's modulus that was 17% higher than that of the Blend, while the yield stress was similar to the Blend. In terms of creep resistance, the Trilayer samples showed a 29% and 40% reduction in tensile creep strain and creep rate, respectively, compared to the Blend. Additionally, the Trilayer samples achieved 48% and 39% decreases in flexural creep strain and creep rate, respectively, in the flexural creep test. The Trilayer also exhibited a 56% decrease in deformation under drop-weight impact and a 14% improved impact absorption compared to the Blend. The overall performance of the multi-layer thermoplastic composite made from PERT and PA12 constituents was significantly enhanced, aligning with the carbon footprint reduction initiative to substitute thermoset, metal, and other traditional materials.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 6","pages":" 1170-1181"},"PeriodicalIF":0.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lp/d4lp00220b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Will it blend? Exploring the viscoelastic characteristics of P3HT-polyborosiloxane blends towards flexible electronic materials† 它能混合吗？探索 P3HT 聚硼硅氧烷共混物的粘弹性特征，实现柔性电子材料。

RSC Applied Polymers Pub Date : 2024-10-10 DOI: 10.1039/D4LP00163J

Peter A. Gilhooly-Finn, Megan M. Westwood and Bob C. Schroeder

引用次数: 0

Valorization of shoe sole waste into high-performance cationic dye sorbents via sulfonation† 通过磺化将鞋底废料转化为高性能阳离子染料吸附剂

RSC Applied Polymers Pub Date : 2024-10-02 DOI: 10.1039/D4LP00281D

Mark Robertson, Andrew Barbour and Zhe Qiang

{"title":"Valorization of shoe sole waste into high-performance cationic dye sorbents via sulfonation†","authors":"Mark Robertson, Andrew Barbour and Zhe Qiang","doi":"10.1039/D4LP00281D","DOIUrl":"https://doi.org/10.1039/D4LP00281D","url":null,"abstract":"Ethylene-vinyl acetate (EVA)-based copolymers are widely employed in various applications such as packaging, adhesives, and shoe soles due to their relatively low cost and versatile properties, which are controlled by their chemical composition. Noteworthily, EVA in shoe soles is commonly crosslinked, which is necessary to increase their melt strength and other material properties for durable use. However, this crosslinked nature precludes traditional melt reprocessing to address the end-of-life of crosslinked EVA materials, posing a critical sustainability challenge for waste management which necessitates new recycling methods. This work develops a simple sulfonation-based method to valorize virgin EVA and shoe soles from real-world waste, imparting sulfonic acid groups on to the polymer backbones, while partially retaining the macroscopic foam structures. The reaction kinetics of sulfonation-based functionalization and their impact on the development of pore structures of EVA and their derived shoe wastes are systematically investigated. Importantly, the presence of acid groups from the upcycled shoe wastes leads to strong interactions with cationic micropollutants, enabling their high performance as sorbent materials for water remediation. The resulting materials can efficiently remove methylene blue and crystal violet from aqueous solution, exhibiting high sorption capacity and fast kinetics. Collectively, this work demonstrates a simple method to convert real-world shoe sole waste into value-enhanced sorbent products with high potential to address emerging micropollutant threats.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 6","pages":" 1157-1169"},"PeriodicalIF":0.0,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lp/d4lp00281d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correlating processing induced orientation with tensile properties for mass polymerized acrylonitrile butadiene styrene test specimens† 大量聚合丙烯腈-丁二烯-苯乙烯试样的加工诱导取向与拉伸性能的相关性†...

RSC Applied Polymers Pub Date : 2024-09-30 DOI: 10.1039/D4LP00238E

E. Fernandez, M. Edeleva, L. Cardon and D. R. D'hooge

{"title":"Correlating processing induced orientation with tensile properties for mass polymerized acrylonitrile butadiene styrene test specimens†","authors":"E. Fernandez, M. Edeleva, L. Cardon and D. R. D'hooge","doi":"10.1039/D4LP00238E","DOIUrl":"https://doi.org/10.1039/D4LP00238E","url":null,"abstract":"In this research, we deal with the link between tensile properties and processing-related morphology variations for mass polymerized acrylonitrile butadiene styrene (mABS). The orientation of multi-core polybutadiene (PB) particles, which are intrinsic to mABS, is investigated regarding flow, shear and cooling changes during sample production. The effect of a different sample size and annealing on the tensile responses has been verified by considering ISO 527 1A and 1BA dog bone samples. For the thin 1BA bars, multiple injection velocities and cooling rates during injection molding have been tested to obtain a more pure correlation between morphology and tensile properties. To perform comparable tensile measurements using both types of dog bone samples, a testing method has been designed for which a relation is included between the sample gauge length and cross head velocity, enabling the comparison of elastic deformation for ISO 527 1A and 1BA mABS samples. Regarding the mABS part morphology, injection molded parts display a skin-shear-core gradient morphology with respect to the PB-particle size and orientation. Annealing of both types of injection molded samples successfully removes most flow-induced orientation of the rubber particles but also results in a change in PB morphology by dissolving a small fraction of the rubber into the SAN matrix, forming PB-nanoparticles. These small particles promote shear bands upon craze-based deformation and therefore positively contribute to the sample toughness. High flow-induced orientation within mABS parts causes a significantly increased tensile stiffness, strength and toughness along the flow direction. Irrespective of the PB orientation, tensile bars with a large surface roughness experience early failure, due to premature craze and crack initiation at the sample surface.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 6","pages":" 1032-1042"},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lp/d4lp00238e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new way to improve the fire safety of polyurethane composites with the assistance of metal–organic frameworks 借助金属有机框架提高聚氨酯复合材料防火安全性的新方法

RSC Applied Polymers Pub Date : 2024-09-25 DOI: 10.1039/D4LP00257A

Jinhu Hu, Ye-Tang Pan, Keqing Zhou, Pingan Song and Rongjie Yang

{"title":"A new way to improve the fire safety of polyurethane composites with the assistance of metal–organic frameworks","authors":"Jinhu Hu, Ye-Tang Pan, Keqing Zhou, Pingan Song and Rongjie Yang","doi":"10.1039/D4LP00257A","DOIUrl":"https://doi.org/10.1039/D4LP00257A","url":null,"abstract":"Polyurethane (PU) is extensively utilized for its outstanding properties. However, its flammability and the substantial release of toxic smoke and harmful gases during combustion pose significant safety concerns in practical applications. Consequently, the development of efficient flame-retardant PU materials has become a critical priority. In recent years, metal–organic frameworks (MOFs) have attracted considerable interest as innovative flame retardants. Thanks to their structural diversity, large specific surface area, tunable porosity, and multifunctional properties, MOF materials show significant promise in improving the flame retardancy of PU. MOFs not only catalyze the formation of stable char layers during PU combustion but also adsorb and trap smoke and toxic gases, all while avoiding the release of corrosive or toxic gases at high temperatures, unlike conventional flame retardants. This review systematically compiles the latest progress in using MOFs to enhance PU flame retardancy, with an emphasis on their applications in polyurethane elastomers (PUE), thermoplastic polyurethanes (TPU), and polyurethane foams (PUF). This paper offers a comprehensive evaluation of the flame-retardant effects of various MOF structures and investigates the synergistic interactions between MOFs and other flame retardants. Additionally, this work identifies current challenges and future development paths, offering theoretical guidance and research avenues for advancing efficient and safe flame-retardant PU materials. This is crucial for enhancing the safety of PU materials and broadening their application areas.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 6","pages":" 996-1012"},"PeriodicalIF":0.0,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lp/d4lp00257a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0