Journal of Polymer Science Part A: Polymer Chemistry最新文献_第10页

Electronic tissue technologies for seamless biointerfaces 无缝生物界面的电子组织技术

IF 2.702

Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-04-19 DOI: 10.1002/pol.20230111

Ivan R. Minev

引用次数: 1

Research progress of self-healing polymer materials for flexible electronic devices 柔性电子器件用自修复高分子材料的研究进展

IF 2.702

Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-04-18 DOI: 10.1002/pol.20230020

Shanshan Zhu, Zhihao Liu, Wenyao Li, Haiwei Zhang, Guoliang Dai, Xing Zhou

引用次数: 2

Square arrays of vertically aligned nanoporous cylinders from a linear ABC triblock terpolymer 线性ABC三嵌段三元共聚物垂直排列的方形纳米孔圆柱体阵列

IF 2.702

Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-04-17 DOI: 10.1002/pol.20230088

Karim Aissou, Muhammad Mumtaz, Daniel Hermida-Merino, Eduardo Solano, Didier Cot, Belkacem Tarek Benkhaled, Damien Quémener, Stéphanie Roualdes, Guillaume Fleury, Georges Hadziioannou

{"title":"Square arrays of vertically aligned nanoporous cylinders from a linear ABC triblock terpolymer","authors":"Karim Aissou, Muhammad Mumtaz, Daniel Hermida-Merino, Eduardo Solano, Didier Cot, Belkacem Tarek Benkhaled, Damien Quémener, Stéphanie Roualdes, Guillaume Fleury, Georges Hadziioannou","doi":"10.1002/pol.20230088","DOIUrl":"https://doi.org/10.1002/pol.20230088","url":null,"abstract":"Vertically oriented nanoporous cylinders, demonstrating an unprecedented alignment persistence, were produced within freestanding poly(1,1-dimethyl silacyclobutane)-block-polystyrene-block-poly(2-vinyl pyridine) (PDMSB-b-PS-b-P2VP) layers (~15 μm thick) blended with short PS-b-P2VP chains by combining the non-solvent induced phase separation (NIPS) process with a solvent vapor annealing (SVA) treatment. Here, the NIPS step allowed for the formation of an asymmetric and porous PDMSB-b-PS-b-P2VP film having a top surface exhibiting poorly-defined nanopores while the subsequent SVA treatment enabled to produce a symmetric layer that possesses highly-ordered cylindrical nanodomains arranged into a 27 nm period square array. As the unblended NIPS/SVA-made PDMSB-b-PS-b-P2VP monoliths exhibited a mixed orientation of parallel and perpendicular cylinders, a blending strategy was used to achieve tetragonally-packed PDMSB and P2VP nanodomains having an exceptional vertical alignment persistence. Such solvent-annealed (3 h, CHCl3) PDMSB-b-PS-b-P2VP monoliths blended with 20 wt% of PS-b-P2VP chains showed a water permeance close to the value measured through their parent NIPS-made terpolymer films having poorly-ordered nanopores.","PeriodicalId":199,"journal":{"name":"Journal of Polymer Science Part A: Polymer Chemistry","volume":"61 13","pages":"1259-1269"},"PeriodicalIF":2.702,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20230088","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5667150","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: 1

Emerging researchers interview – Hao Sun, University of New Haven 新兴研究人员访谈-孙浩，纽黑文大学

IF 2.702

Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-04-15 DOI: 10.1002/pol.20230122

引用次数: 0

Cover Image, Volume 61, Issue 8 封面图片，第61卷，第8期

IF 2.702

Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-04-15 DOI: 10.1002/pol.20230179

引用次数: 0

Biobased composites of poly(butylene furanoate) copolymers and hemp 聚呋喃酸丁烯共聚物与大麻的生物基复合材料

IF 2.702

Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-04-14 DOI: 10.1002/pol.20230060

Zhengyu Deng, Iryna Liubchak, F. Benjamin Holness, Farshid Shahrokhi, Aaron D. Price, Elizabeth R. Gillies

{"title":"Biobased composites of poly(butylene furanoate) copolymers and hemp","authors":"Zhengyu Deng, Iryna Liubchak, F. Benjamin Holness, Farshid Shahrokhi, Aaron D. Price, Elizabeth R. Gillies","doi":"10.1002/pol.20230060","DOIUrl":"https://doi.org/10.1002/pol.20230060","url":null,"abstract":"There is growing interest in biodegradable and bio-based materials that can replace conventional plastics in applications such as packaging. Polymers based on 2,5-furandicarboxylic acid (FDCA) have been proposed as bio-based analogues for polymers based on terephthalic acid. However, they tend to be brittle, exhibit limited biodegradability, and there are few examples of biocomposites from these polymers. Described here is the preparation of a small library of copolyesters based on FDCA, 1,4-butanediol, and either succinic, adipic or sebacic acid. By incorporating different dicarboxylic acids in varying ratios, the glass transition temperature was tuned from −30 to 41°C and the melting temperature from 104–171°C while maintaining high stability up to ~300°C. Incorporation of aliphatic dicarboxylic acids facilitated blending of the copolymers with hemp powder, with up to 30 wt% hemp incorporated into the polymer containing 60:40 FDCA:sebacic acid. Incorporation of hemp did not substantially alter the thermal properties but increased the moduli of the composites. The copolyesters were susceptible to degradation by Rhizopus oryzae lipase, with the sebacic acid-containing polyester having higher degradability than the succinic acid-containing polyester. Overall, the results demonstrate the promise of the copolyester-hemp blends for applications where they can replace conventional non-degradable plastics.","PeriodicalId":199,"journal":{"name":"Journal of Polymer Science Part A: Polymer Chemistry","volume":"61 14","pages":"1528-1536"},"PeriodicalIF":2.702,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20230060","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6223266","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: 2

Extremely early onset of nonlinear viscoelasticity in dynamic shear of ideally monodisperse DNA 在理想的单分散DNA的动态剪切中，非线性粘弹性的极早发生

IF 2.702

Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-04-13 DOI: 10.1002/pol.20230014

Sourya Banik, Gregory B. McKenna

{"title":"Extremely early onset of nonlinear viscoelasticity in dynamic shear of ideally monodisperse DNA","authors":"Sourya Banik, Gregory B. McKenna","doi":"10.1002/pol.20230014","DOIUrl":"https://doi.org/10.1002/pol.20230014","url":null,"abstract":"This work reports that the rheology of ideally monodisperse lambda (<math>\u0000 <mi>λ</mi></math>) phage DNA solutions is extremely sensitive to the applied strain in dynamic oscillatory experiments. <math>\u0000 <mi>λ</mi></math> DNA exhibits nonlinearity at strains far smaller than what is observed in conventional synthetic polymers. However, it is found that polydisperse calf thymus DNA does not exhibit the extreme strain sensitivity. By mixing samples of monodisperse <math>\u0000 <mi>λ</mi></math> DNA with the polydisperse calf thymus DNA, we correlate the molecular weight distribution (or polydispersity) to the onset of nonlinear viscoelasticity. We demonstrate that the strain sensitivity weakens as the polydispersity index increases. This is the first work correlating the inception of nonlinear viscoelasticity in entangled polymer system such as lambda DNA solution to the polydispersity of the samples. The experimental data suggests that ideally monodisperse polymer systems are very sensitive to the applied strain and have a very early transition to the nonlinear regime. We conclude that nominally monodisperse synthetic polymers are not sufficiently monodispersed to exhibit the early onset.","PeriodicalId":199,"journal":{"name":"Journal of Polymer Science Part A: Polymer Chemistry","volume":"61 14","pages":"1465-1475"},"PeriodicalIF":2.702,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20230014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6112016","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

An elasto-viscoplastic constitutive model for the rate-dependent behavior of polyvinylidene fluoride 聚偏氟乙烯速率相关行为的弹粘塑性本构模型

IF 2.702

Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-04-11 DOI: 10.1002/pol.20220729

Tom Lenders, Joris J. C. Remmers, Tommaso Pini, Peter Veenstra, Leon E. Govaert, Marc G. D. Geers

{"title":"An elasto-viscoplastic constitutive model for the rate-dependent behavior of polyvinylidene fluoride","authors":"Tom Lenders, Joris J. C. Remmers, Tommaso Pini, Peter Veenstra, Leon E. Govaert, Marc G. D. Geers","doi":"10.1002/pol.20220729","DOIUrl":"https://doi.org/10.1002/pol.20220729","url":null,"abstract":"To model the engineering performance of components made of polyvinylidene fluoride (PVDF), the 3D elasto-viscoplastic Eindhoven glassy polymer (EGP) model is extended to describe the rate-dependent behavior of PVDF. Careful analysis of the intrinsic behavior of PVDF revealed that the postyield compressive response shows a strain rate-dependence that evolves with increasing deformation. The extension of the constitutive model captures the deformation-dependent evolution of the activation volume and the rate-factor, which describes the driving stress. Given the significant temperature-dependent behavior, the model has been characterized for different temperatures (23, 55 and 75 °C). The accuracy of the model has been validated by means of tension and creep experiments at these temperatures. The constitutive model is implemented in finite element simulations and the results are compared with the experiments. It is shown that the proposed model allows for an accurate prediction of the short- and long-term rate-dependent behavior of PVDF.","PeriodicalId":199,"journal":{"name":"Journal of Polymer Science Part A: Polymer Chemistry","volume":"61 14","pages":"1439-1456"},"PeriodicalIF":2.702,"publicationDate":"2023-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20220729","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6199307","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

PBP-based bioprinting of hydrogels for biomedical applications 生物医学应用中基于pbp的水凝胶生物打印

IF 2.702

Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-04-11 DOI: 10.1002/pol.20220772

Yongliang Jia, Junyu Liu, Ziwei Tan, Dongmei Luo, Xinyu Fu, Ruxia Hou, Peiwen Li, Yurou Chen, Xiangyu Wang

引用次数: 0

Kinetic and thermodynamic study of micron waste polypropylene thermal degradation 微米级废聚丙烯热降解动力学与热力学研究

IF 2.702

Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-04-10 DOI: 10.1002/pol.20230104

Yitao Liu, Zhiyuan Zhao, Ruiyu Chen, Xiaokang Xu

{"title":"Kinetic and thermodynamic study of micron waste polypropylene thermal degradation","authors":"Yitao Liu, Zhiyuan Zhao, Ruiyu Chen, Xiaokang Xu","doi":"10.1002/pol.20230104","DOIUrl":"https://doi.org/10.1002/pol.20230104","url":null,"abstract":"How to properly dispose of waste polymers is a recognized challenge all over the world. Thermal degradation is currently recognized as a promising method for recycling polymer waste into fuels or products with high energy density without polluting the environment. In the present study, the thermal degradation characteristics, kinetics, thermodynamic parameters, and volatiles of a representative and extremely widely-used polymer (micron waste polypropylene [PP]) pyrolysis in nitrogen were investigated. The results indicate that the thermal degradation of micron waste polypropylene can be considered as a one-step reaction with merely one distinct peak on the reaction rate curves. The peak and average reaction rates decrease with the heating rate. The most appropriate reaction model to characterize the thermal degradation is g(α) = 1−(1−α)1/4. The average values of activation energy and pre-exponential factor are 128.76 kJ/mol and 6.79 × 109 min−1, respectively. The kinetic parameters obtained in this study are all larger than those of PP with the particle size of millimeters or larger. The predicted thermogravimetric curves of thermal degradation are in good agreement with the experimental results. The changes of enthalpy, Gibbs free energy, and entropy show that the thermal degradation of micron waste polypropylene is a non-spontaneous and endothermic reaction. In addition, the concentrations of all volatiles in descending order are: H2O > Esters (COO) > CO2 > Alkanes (CH3) > R2CCH2 > Olefins (CC) > Alcohols (ROH) > Methylene group > CO.","PeriodicalId":199,"journal":{"name":"Journal of Polymer Science Part A: Polymer Chemistry","volume":"61 14","pages":"1513-1527"},"PeriodicalIF":2.702,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6178819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0