Title: Synthesis, Characterization, and Structural Investigations of Poly(ethyl acrylate)-<i>l</i>-polyisobutylene Bicomponent Conetwork
Abstract: A new bicomponent conetwork, poly(ethyl acrylate)-linked-polyisobutylene (PEtA-l-PIB), was synthesized by radical copolymerization of equal amounts of telechelic α,ω-dimethacrylic PIB (MA−PIB−MA, Mn/(kg/mol) = 11.2, Mw/Mn = 1.12, and MA/chain = 2.0) obtained via quasi-living carbocationic polymerization and ethyl acrylate in 10% solution for each component in a common solvent, tetrahydrofuran, followed by extraction and drying. Low amounts of extractables (2.5% in acetone and 4.6% in hexane) and nearly theoretical composition (51% PEtA and 49% PIB) of the resulting conetwork indicate efficient network formation; i.e., this new conetwork is composed of PIB chains connected at each end to two PEtA chains. DSC experiments gave close to literature value Tg's (−68 °C for PIB and −22 °C for PEtA), indicating a segregated morphology in this conetwork. In contrast to reported results for similar conetworks containing PIB and other polymers with polar groups, surface analysis with XPS found no significant differen...
Publication Year: 2001
Publication Date: 2001-02-10
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 93
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot