Degradable poly(ester-ether urethane)s derived of AB₂ miktoarm star copolymer poly(ethylene glycol-(蔚-caprolactone)₂) diol: Synthesis, characterization and degradation

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• 作者：José ; E. B&aacute ; ezp> ; p>p>jebaez14@yahoo.com.mxp> ; &Aacute ; ngel Marcos-Fern&aacute ; ndez
• 关键词：Miktoarm star copolymer ; Ring-opening polymerization ; Poly(蔚-caprolactone) ; Poly(ethylene glycol) ; Poly(ester-ether urethane)
• 刊名：Reactive and Functional Polymers
• 出版年：2012
• 期刊代码：92_13815148
• 类别：ch
• 出版时间：May, 2012
• 卷：72
• 期：5
• 页码：349-357
• 文件大小：1072 K

摘要

Four different miktoarm star copolymers poly(ethylene glycol-(蔚-caprolactone)₂) diol [PEG-PCL₂] were obtained using 伪-diol-蠅-methoxy poly(ethylene glycol) [MPEG-(OH)₂] as macroinitiator/chain transfer agent in the ring opening polymerization (ROP) of 蔚-caprolactone (CL) catalyzed by tin(II) 2-ethylhexanoate [Sn(Oct)₂]. PEG-PCL₂ and 1,6-hexamethylene diisocyanate (HDI) were used as precursors of a new family of poly(ester-ether urethane)s PEUs. PEUs films were characterized by FT-IR, DSC, mechanical properties, water absorption, hydrolytic degradation and SEM.