纤维素基平板基底上交联聚(2-(2-甲氧基乙氧基)乙基甲基丙烯酸酯-共(乙二醇)甲基丙烯酸酯)凝胶膜的结构和过渡行为

IF 3.2 3区 化学 Q2 POLYMER SCIENCE
e-Polymers Pub Date : 2024-04-17 DOI:10.1515/epoly-2023-0147
Yangyi Chen, Tong Su, Shihang Zhou, Chendi Xie, Huan Qi, Zaisheng Cai, Liqun Chen
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引用次数: 0

摘要

研究了交联热响应聚(2-(2-甲氧基乙氧基)乙基甲基丙烯酸酯-co-(乙二醇)甲基丙烯酸酯)(P(MEO2MA-co-EGMA360))凝胶薄膜在平纤维素基底上的结构和过渡行为。再生纤维素(RC)薄膜的制备方法是在处理过的硅晶片上用三甲基硅基纤维素(TMSC)旋涂,然后用盐酸蒸气蚀刻,再用含有聚合物的预交联溶液旋涂、干燥和烘烤,就得到了交联聚合物凝胶薄膜。傅立叶变换红外光谱仪、X 射线光电子能谱仪和原子力显微镜检测结果表明,在硅晶片上的 TMSC 薄膜上层生成了厚度为 25 纳米的 RC 薄膜。交联促使链段排列更紧密,并阻碍了链段的延伸,导致聚合物凝胶薄膜的相变行为不那么突出。通过石英晶体微天平测量和三维显微镜,发现了一种相变滞后现象,即交联聚合物凝胶膜在初始加热过程中的水合松散结构转变为脱水致密结构,在随后的冷却过程中又重新恢复。然而,由于过渡时间不足和交联造成的立体阻碍,薄膜的再水化程度和柔韧性无法达到初始值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Structure and transition behavior of crosslinked poly(2-(2-methoxyethoxy) ethylmethacrylate-co-(ethyleneglycol) methacrylate) gel film on cellulosic-based flat substrate
The structure and transition behavior of crosslinked thermo-responsive poly(2-(2-methoxyethoxy) ethylmethacrylate-co-(ethyleneglycol) methacrylate) (P(MEO2MA-co-EGMA360)) gel film on a flat cellulosic-based substrate were investigated. The regenerated cellulose (RC) film was prepared by spin-coating with trimethylsilyl cellulose (TMSC), followed by etching with hydrochloric acid vapor on a treated silicon wafer, then crosslinked polymer gel film was obtained by spin-coating, drying, and baking with a pre-crosslinked solution containing polymers. Fourier transform infrared spectroscopy, X-ray photoelectron spectrometer, and atomic force microscopy results show that a RC film with a thickness of 25 nm is generated in the upper layer of TMSC film on the silicon wafer. The cross-linking induces closer arrangement and hinders the extension of chain segments, leading to less prominent phase transition behaviors of polymer gel films. By quartz crystal microbalance measurement and 3D microscopes, a phase transition hysteresis is discovered, the hydrated and loose structure of crosslinked polymer gel film switches to dehydrated and compact structure in initial heating process, which subsequently recovers during the following cooling process. However, the degrees of rehydration and flexibility of film could not reach the initial value because of the insufficient transition time and steric hindrance caused by crosslinking.
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来源期刊
e-Polymers
e-Polymers 化学-高分子科学
CiteScore
5.90
自引率
10.80%
发文量
64
审稿时长
6.4 months
期刊介绍: e-Polymers is a strictly peer-reviewed scientific journal. The aim of e-Polymers is to publish pure and applied polymer-science-related original research articles, reviews, and feature articles. It includes synthetic methodologies, characterization, and processing techniques for polymer materials. Reports on interdisciplinary polymer science and on applications of polymers in all areas are welcome. The present Editors-in-Chief would like to thank the authors, the reviewers, the editorial staff, the advisory board, and the supporting organization that made e-Polymers a successful and sustainable scientific journal of the polymer community. The Editors of e-Polymers feel very much engaged to provide best publishing services at the highest possible level.
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