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通过可逆加成-断裂链转移聚合合成的乙烯和醋酸乙烯酯的统计和嵌段共聚物。

Statistical and Block Copolymers of Ethylene and Vinyl Acetate via Reversible Addition-Fragmentation Chain Transfer Polymerization.

机构信息

Univ Lyon, CPE Lyon, CNRS, UMR 5128, Catalysis, Polymerization, Processes and Materials (CP2M), Université Claude Bernard Lyon 1, 43 Bd du 11 Novembre 1918, Villeurbanne, 69616, France.

出版信息

Macromol Rapid Commun. 2021 Aug;42(16):e2100270. doi: 10.1002/marc.202100270. Epub 2021 Jun 18.

Abstract

A dithiocarbamate chain transfer agent (CTA) based on Z-group substituted with a diphenyl amine (-NPh ) moiety is selected for the synthesis of statistical and diblock copolymers of ethylene and vinyl acetate via reversible addition-fragmentation chain transfer polymerization. Benefiting from the good chain growth control of polyethylene (PE), poly(vinyl acetate) (PVAc), and poly(ethylene-co-vinyl acetate) (EVA) achieved with this CTA, linear diblock copolymers of the type EVA-b-PE, EVA-b-EVA, and PVAc-b-EVA are successfully synthesized. A three-arm EVA star is additionally obtained starting from a trifunctional dithiocarbamate CTA.

摘要

选择一种基于 Z 基团的二硫代氨基甲酸盐链转移剂(CTA),其中 Z 基团用二苯胺(-NPh)部分取代,用于通过可逆加成-断裂链转移聚合合成乙烯和醋酸乙烯酯的统计和嵌段共聚物。受益于该 CTA 对聚乙烯(PE)、聚醋酸乙烯酯(PVAc)和乙烯-醋酸乙烯共聚物(EVA)的良好链增长控制,成功合成了 EVA-b-PE、EVA-b-EVA 和 PVAc-b-EVA 型线性嵌段共聚物。此外,还从三官能二硫代氨基甲酸盐 CTA 出发获得了三臂 EVA 星型聚合物。

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