通过从阳离子到自由基过程的机理转变获得功能化聚异丁烯和聚异丁烯基嵌段共聚物

IF 2.5 4区 化学 Q3 POLYMER SCIENCE Macromolecular Chemistry and Physics Pub Date : 2024-09-10 DOI:10.1002/macp.202400261
Yusra Bahar Cakir, Miraslau Makarevich, Mikalai Bohdan, Tugba Celiker, Maksim Hulnik, Irina V. Vasilenko, Baris Kiskan, Sergei V. Kostjuk
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引用次数: 0

摘要

报告介绍了通过阳离子聚合到自由基聚合的机理转变制备聚异丁烯基嵌段共聚物的策略。该策略包括通过连续阳离子聚合合成 2-溴-2-甲基丙酰基封端的双官能团聚异丁烯大引发剂(BiBB-PIB-BiBB),原位制备羟基封端的聚异丁烯,并用 2-溴-2-甲基丙酰基溴对其进行酰化。使用这种大引发剂,Mn2(CO)10 引发的苯乙烯块体光引发自由基聚合可形成多嵌段共聚物,而在甲基丙烯酸甲酯聚合过程中则主要生成三嵌段共聚物。这项工作还证明了在 Mn2(CO)10 的存在下,通过光诱导自由基加成 1-溴甲基芘,用芘对聚异丁烯进行官能化的可能性。
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Functionalized Polyisobutylene and Polyisobutylene‐Based Block Copolymers by Mechanistic Transformation from Cationic to Radical Process
The strategy for the preparation of polyisobutylene‐based block copolymers via mechanistic transformation from cationic to radical polymerization is reported. This strategy involves the synthesis of 2‐bromo‐2‐methylpropanoyl‐terminated difunctional polyisobutylene macroinitiator (BiBB‐PIB‐BiBB) via consecutive cationic polymerization, in situ preparation of hydroxyl‐terminated polyisobutylene and its acylation by 2‐bromo‐2‐methylpropanoyl bromide. The Mn2(CO)10−triggered photo‐induced radical polymerization of styrene in bulk using this macroinitiator leads to the formation of multiblock copolymer, while predominantly triblock copolymer is generated during the polymerization of methyl methacrylate. The possibility to functionalize the polyisobutylene by pyrene via photo‐induced radical addition of 1‐bromomethyl pyrene in the presence of Mn2(CO)10 is also demonstrated in this work.
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来源期刊
Macromolecular Chemistry and Physics
Macromolecular Chemistry and Physics 化学-高分子科学
CiteScore
4.30
自引率
4.00%
发文量
278
审稿时长
1.4 months
期刊介绍: Macromolecular Chemistry and Physics publishes in all areas of polymer science - from chemistry, physical chemistry, and physics of polymers to polymers in materials science. Beside an attractive mixture of high-quality Full Papers, Trends, and Highlights, the journal offers a unique article type dedicated to young scientists – Talent.
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