Syntheses of 2-(trifluoromethyl)acrylate-containing block copolymers via RAFT polymerization using a universal chain transfer agent†,Polymer Chemistry

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Syntheses of 2-(trifluoromethyl)acrylate-containing block copolymers via RAFT polymerization using a universal chain transfer agent†
Polymer Chemistry ( IF 4.1 ) Pub Date : 2018-06-13 00:00:00 , DOI: 10.1039/c8py00655e
Sanjib Banerjee _{1,

2,

3,

4} , Marc Guerre _{5,

6,

7,

8,

9} , Bruno Améduri _{5,

6,

7,

8,

9} , Vincent Ladmiral _{5,

6,

7,

8,

9}

Affiliation

This article describes the synthesis and characterization of a series of well-defined block copolymers (BCPs) comprising a poly(vinyl acetate-alt-tert-butyl-2-trifluoromethacrylate) (poly(VAc-alt-MAF-TBE)) alternating copolymer segment and a homopolymer segment (PVAc, polystyrene, poly(meth)acrylate, polyacrylamide, or poly(N-vinylpyrrolidone)) using RAFT polymerization under mild conditions (at 40 °C). The abilities of four chain transfer agents (CTAs) to copolymerize VAc and MAF-TBE were compared. Recently reported as a universal RAFT CTA, cyanomethyl 3,5-dimethyl-1H-pyrazole-1-carbodithioate (CDPCD) afforded better-defined BCPs compared to O-ethyl-S-(1-methoxycarbonyl)ethyldithiocarbonate (CTA-XA), 2-cyano-2-propyl benzodithioate (CPDB), and 4-cyano-4-(2-phenylethanesulfanylthiocarbonyl)sulfanyl pentanoic acid (PETTC). While the chain extension of poly(VAc-alt-MAF-TBE)-DPCD with vinyl acetate (VAc), styrene (St), n-butyl acrylate (nBA), and dimethyl acrylamide (DMA) led to well-defined poly(VAc-alt-MAF-TBE)-b-poly(M) BCPs with acceptable dispersity values (Đ ≤ 1.36), high Đ values were observed when methyl methacrylate (MMA) and N-vinylpyrrolidone (NVP) were used to form the second block. An attempt to synthesize poly(M)-b-poly(VAc-alt-MAF-TBE) block copolymers using poly(M)-DPCD as the macroCTA led to copolymers with high Đ values (1.53–2.0).

中文翻译：

使用通用链转移剂通过RAFT聚合合成含2-（三氟甲基）丙烯酸酯的嵌段共聚物†

本文描述了一系列包含聚良好定义的嵌段共聚物（口岸）的合成和表征（乙酸乙烯酯-交替-叔丁基-2- trifluoromethacrylate）（聚（VAc- ALT -MAF-TBE））交替共聚物链节和均聚物链段（PVAc，聚苯乙烯，聚（甲基）丙烯酸酯，聚丙烯酰胺或聚（N-乙烯基吡咯烷酮））在温和的条件下（在40°C）使用RAFT聚合。比较了四种链转移剂（CTAs）共聚VAc和MAF-TBE的能力。最近报道为通用RAFT CTA，与O-乙基-S相比，氰基甲基3,5-二甲基-1 H-吡唑-1-碳二硫酸酯（CDPCD）提供了更明确的BCP。-（1-甲氧基羰基）乙基二硫代碳酸酯（CTA-XA），2-氰基-2-丙基苯并二硫代酸酯（CPDB）和4-氰基-4-（2-苯基乙硫基硫代羰基羰基）硫基戊酸（PETTC）。虽然聚（VAc-的链延长ALT -MAF-TBE）-DPCD与乙酸乙烯酯（VAc），苯乙烯（St），Ñ丙烯酸正丁酯（Ñ BA），和二甲基丙烯酰胺（DMA）导致良好定义的聚（VAc- ALT -MAF-TBE） - b -聚（M）具有可接受的分散性值（口岸Đ ≤1.36），高Đ当甲基丙烯酸甲酯（MMA）和观察值ñ乙烯基吡咯烷酮（NVP）被用于形成第二块。尝试合成poly（M）-b -poly（VAc- alt-MAF-TBE），使用聚（M）-DPCD作为macroCTA中导致高共聚物的嵌段共聚物Đ值（1.53-2.0）。

更新日期：2018-06-13

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