摘要
采用半互穿聚合物网络的形式在聚氨酯基体中引入聚N-异丙基丙烯酰胺,将其在不同成膜介质中凝固成膜,采用红外光谱、扫描电镜等手段表征了膜的结构和微观形态,同时还测试了膜材料的溶胀性和拉伸性能。结果表明,与聚氨酯膜相比,聚氨酯基半互穿聚合物网络多孔膜的力学性能有所改善,溶剂之间的置换速度有所调节,结构更加均匀;以水为成膜介质时,聚氨酯基半互穿聚合物网络多孔膜的性能比以乙醇和异丙醇为成膜介质时要好,温敏性能更加明显。
Poly N-isopropylacrylamide was introduced into the solution of polyurethane forming a semi-interpenetrating polymer network (semi-IPNs), and the semi-IPNs were cast in different coagulation baths. Fourier transform infrared spectroscopy and scanning electron micrograph were employed to characterize their structure. The swelling behavior and tensile properties of the semi-IPNs films were also tested. It showed that the semi-IPNs films had better mechanical properties and more uniform structure than the films based neat polyurethane. The semi-lPNs films formed in water had better properties than in alcohol and isopropanol, and had higher temperature sensibility
出处
《中国塑料》
CAS
CSCD
北大核心
2011年第4期73-76,共4页
China Plastics
基金
浙江省教育厅项目(Y201019026)
浙江省大学生科技创新活动计划项目(2009R417019)
东华大学博士生创新项目(105-06-0019039)
关键词
聚氨酯
聚N-异丙基烯酰胺
半互穿聚合物网络
凝固
介质
合成革
温敏性
polyurethane
poly-N-isopropylacrylamide
semi-interpenetrating polymer network
coagulation
medium
leather
thermosensitivity