高校化学工程学报2024，Vol.38Issue(3)：432-439,8.DOI:10.3969/j.issn.1003-9015.2024.03.010
碘转移本体聚合制备PS-b-PBA-b-PS共聚物:聚合动力学、结构和性能
Poly(styrene-b-butyl acrylate-b-styrene)copolymers prepared by iodine transfer bulk polymerization:Kinetics,structure and properties
章璐鑫 1常兆恒 1余大洋 2包永忠3
作者信息
- 1. 浙江大学 化学工程与生物工程学院,化学工程国家重点实验室(浙江大学),浙江 杭州 310058
- 2. 浙江大学衢州研究院,浙江 衢州 324000
- 3. 浙江大学 化学工程与生物工程学院,化学工程国家重点实验室(浙江大学),浙江 杭州 310058||浙江大学衢州研究院,浙江 衢州 324000
- 折叠
摘要
Abstract
Iodine-terminated poly(butyl acrylate)(I-PBA-I)was prepared by iodine transfer bulk polymerization using iodoform chain transfer agent and azo-initiator,and further applied as a macro-chain transfer agent in the chain extension polymerization of styrene to synthesize poly(styrene-b-butyl acrylate-b-styrene)(PS-b-PBA-b-PS)copolymers.The polymerization kinetics,structure and properties of PS-b-PBA-b-PS were characterized.The results show that both homopolymerization of butyl acrylate and block copolymerization of styrene exhibit the characteristics of"living radical polymerization".The number average molecular weight of I-PBA-I was increased from 15 000 to 134 500 as the feed molar ratio of BA to CHI3(nBA,0/nCHI3,0)increased from 100/1 to 1 000/1.PS-b-PBA-b-PS copolymers with the number average molecular weight of 46 000,69 000,97 500 and 127 000 were obtained at nBA,0/nSt,0 ratios of 1/1,1/2,1/3 and 1/4,respectively.Micro-phase separation was observed in PS-b-PBA-b-PS copolymers,and block copolymers exhibited certain transparency and improved toughness.The impact strength of PS-b-PBA-b-PS copolymer with nPS/nPBA of 3.85/1 was similar to that of commercial styrene-butadiene block copolymer prepared by anion living polymerization.关键词
聚苯乙烯/聚丙烯酸丁酯/碘转移聚合/聚合动力学/嵌段共聚物Key words
polystyrene/poly(butyl acrylate)/iodine transfer polymerization/kinetics/block copolymer分类
化学化工引用本文复制引用
章璐鑫,常兆恒,余大洋,包永忠..碘转移本体聚合制备PS-b-PBA-b-PS共聚物:聚合动力学、结构和性能[J].高校化学工程学报,2024,38(3):432-439,8.
