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首页> 外文期刊>Journal of Macromolecular Science. Pure and Applied Chemistry >Isoconversional curing and degradation kinetics study of self-assembled thermo-responsive resin system bearing oxime and iminium groups
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Isoconversional curing and degradation kinetics study of self-assembled thermo-responsive resin system bearing oxime and iminium groups

机译：含肟和亚胺基团的自组装热敏树脂体系的等转化固化和降解动力学研究

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摘要

This paper demonstrates synthesis of a self-assembled resin system containing p-acetylpyridine oxime, formaldehyde and p-methoxyacetophenone moieties in main chain and thermally cross-linkable periphery oxime groups, and application as antimicrobial coating in biomedical applications. The post-polymerization conversion from oxime into iminium groups was observed by heating scan, with exothermic peaks being at 194 to 247°C. Various degradation models including the Flynn-Wall-Ozawa (F-W-O), Kissinger-Akahira- Sunose (K-A-S), Tang (T) and Friedman (F) methods were employed to check the thermal stability of self-assembly by computing apparent activation energy. It has also exhibited strong biocidal properties against gram-positive and gram-negative bacteria, and fungi until the macrochain retains some positive charge. The obtained results prove that the structure of links, which combine the hydrophobic pyridine rings with the hydrophilic iminium groups, is responsible for the high biocidal activity of the resin system.
机译：本文证明了自组装树脂体系的合成，该体系在主链和可热交联的外围肟基团中包含对乙酰基吡啶肟，甲醛和对甲氧基苯乙酮部分，并在生物医学应用中用作抗菌涂料。通过加热扫描观察到从肟到亚胺基的聚合后转化，其放热峰在194至247℃。包括Flynn-Wall-Ozawa（F-W-O），Kissinger-Akahira-Sunose（K-A-S），Tang（T）和Friedman（F）方法在内的各种降解模型通过计算表观活化能来检查自组装的热稳定性。它也表现出对革兰氏阳性和革兰氏阴性细菌以及真菌的强大杀生物特性，直到大链保留一些正电荷为止。所获得的结果证明，将疏水性吡啶环与亲水性亚胺基团结合的连接结构是树脂体系高杀菌活性的原因。

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