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首页> 外文期刊>Journal of Fluorine Chemistry >Comparison of epoxy- and cyclocarbonate-functionalised vinyl ethers in radical copolymerisation with chlorotrifluoroethylene
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Comparison of epoxy- and cyclocarbonate-functionalised vinyl ethers in radical copolymerisation with chlorotrifluoroethylene

机译：环氧和环碳酸酯官能化的乙烯基醚与三氟氯乙烯进行自由基共聚的比较

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摘要

The synthesis of functional fluoropolymers is a challenging and highly sought-after objective. Fluoroolefins are indeed in their vast majority non-functional. Their specific reactivity however, can be turned into an advantage. Alternating copolymerisation of electron-acceptor chlorotrifluoroethylene (CTFE) and electron-donor vinyl ethers (VEs) is indeed efficient to prepare poly(CTFE-alt-VE) fluoropolymers with a very high density of functional groups. This article deals with the synthesis of two original functional vinyl ethers (oxirane and cyclocarbonate), and describes two methods to synthesise ammonium-containing Hofmannn degradation-insensitive fluoro-copolymers, that may display interesting properties as component of solid alkaline fuel cell membranes. Both functional vinyl ethers copolymerised to high yield with CTFE. The oxirane-based monomera led to better defined alternating copolymers compared to the cyclocarbonate-containing vinyl ether. The post-polymerisation functionalisation of the copolymers using amines afforded well-defined ammonium-functionalised fluoro-copolymers. (C) 2014 Elsevier B.V. All rights reserved.
机译：功能性含氟聚合物的合成是具有挑战性和高度追求的目标。实际上，氟烯烃在绝大多数情况下是非官能的。然而，它们的特定反应性可以变成优势。电子受体三氟氯乙烯（CTFE）和电子给体乙烯基醚（VEs）的交替共聚确实有效地制备了具有很高密度官能团的聚（CTFE-alt-VE）含氟聚合物。本文讨论了两种原始功能性乙烯基醚（环氧乙烷和环碳酸酯）的合成，并描述了两种合成含铵的霍夫曼降解不敏感的含氟共聚物的方法，这些方法可能显示出作为固体碱性燃料电池膜成分的有趣特性。两种功能性乙烯基醚均与CTFE共聚，高收率。与含环碳酸酯的乙烯基醚相比，基于环氧乙烷的单体可产生定义更好的交替共聚物。使用胺对共聚物进行后聚合官能化，得到定义明确的铵官能化的含氟共聚物。 （C）2014 Elsevier B.V.保留所有权利。

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