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论文类型：期刊论文

发表时间：2008-05-01

发表刊物：ADVANCED ENGINEERING MATERIALS

收录刊物：SCIE、EI

卷号：10

期号：5

页面范围：494-502

ISSN号：1438-1656

摘要：An alternative concept for the introduction of second amorphous phase was reported using di-methacylates (DM) as oligomeric crosslinker for polyacrylates forming amorphous AB copolymer networks. The aim is is to retain the poly[(L-lactide)-ran-glycolide)] segments forming the phase with the high glass transition temperature Tg.has network component but to incorporate a second amorphous phase with a low glass transition temperature Tg.l. This low glass transition temperature keeps the material elastic even below Tg.hof poly[(L-lactide)-ran-glycolide)]-phase. Amorphous AB copolymer network was prepared by polymerizing various acrylates and poly[(L-lactide)-ran-glycolide)] dimethyacrylate using UV-light. Thermal properties of polymer networks were investigated by DSC and DMTA. The values for Tgwere found to decrease gradually with increasing acrylate content, ranging from 55°C to -12°C for the PDMAEt.