摘要
利用不同分子链长的聚乙二醇PEG300(分子质量300,下同)、PEG400、PEG600、PEG1000和PEG1500,合成了一系列新型的聚氨酯。探讨了聚乙二醇(PEG)亲水链段的分子链长,对聚氨酯薄膜表面接触角、透气性、吸水率和力学性能的影响。结果表明:随着PEG分子链的增长,合成的聚氨酯薄膜的表面接触角、吸水率、透气性和断裂伸长率增加,但是抗张强度却有所降低。
A series of novel polyethylene glycol - based polyurethanes were prepared by several polyethylene glycols with different molecular chain lengths. The influence of hydrophilic segment chain length of the polyethylene （PEG） on contact angle, water - vapor permeability, water - absorbing capacity and mechanical properties of polyurethane film was investigated. The resuits indicate that with the increase of the PEG chain, the contact angle, water - vapor permeability, water - absorbing capacity and the broken elongation of PU film enhance, while the tensile strength of PU film decreases.
出处
《中国皮革》
CAS
北大核心
2007年第13期9-12,共4页
China Leather
基金
教育部新世纪优秀人才资助项目(NCET-05-0782)
关键词
聚氨酯
透气性
亲水链段
分子链链长
聚乙二醇
polyurethane
water - vapor permeability
hydrophilic segment
chain length
polyethylene glycol
