We report the synthesis of PE and poly(ethylene-co-vinyl acetate) (EVA) bearing a low content of in-chain thioester functions introduced via a co- or terpolymerization approach involving ethylene (E), vinyl acetate (VAc), and ε-thionocaprolactone (TCL). To achieve homogeneous incorporation of thioester functions along the chains resulting from the ring opening of TCL, a semibatch process with an adjusted feed of TCL was employed. Characterizations of the polymers were conducted by a combination of size exclusion chromatography (SEC) and nuclear magnetic resonance (NMR) analyses. The chemically induced degradability of the obtained polymers was assessed by SEC.

中文翻译：

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乙烯、ε-硫代己内酯和乙酸乙烯酯的自由基共聚合和三元聚合合成可降解聚乙烯和聚（乙烯-共-乙酸乙烯酯）

我们报道了通过涉及乙烯（E）、乙酸乙烯酯（VAc）和乙烯（VAc）的共聚或三聚方法引入的具有低含量链内硫酯官能团的PE和聚（乙烯-共-乙酸乙烯酯）（EVA）的合成。 ε-硫代己内酯（TCL）。为了实现硫酯官能团沿着 TCL 开环产生的链均匀掺入，采用了调整 TCL 进料的半间歇工艺。通过尺寸排阻色谱 (SEC) 和核磁共振 (NMR) 分析的结合进行聚合物的表征。通过 SEC 评估所得聚合物的化学诱导降解性。