摘要
共混改性是提高材料性能的简便而有效的方式,文中以聚乙烯醇(PVA)和羟丙基纤维素(HPC)为基本成膜材料,通过制备不同配比的共混溶液,探讨了PVA/HPC共混体系的相容性,并对共混膜的结构和性能进行了初步表征。稀溶液黏度法和扫描电镜分析表明,共混体系中PVA含量较多(>80%)时,共混膜呈现均一的相态结构,共混体系为相容体系;傅立叶红外光谱和热重分析显示,PVA/HPC共混体系中存在的氢键作用提高了共混体系的热稳定性。
Properties of polymers can be improved effectively via blending. Solution blending of hydroxypropyl cellulose （HPC） and polyvinyl alcohol （PVA） was carried out to determine the compatibility. Experimental evidence for the compatibility of these blends was derived from viscometric methods,scanning electron microscopy （SEM） and infrared spectroscopy （FT-IR）. Thermogravimetry analysis （TGA） was employed to investigate the thermal stability of blend system. The results show that there is no obvious phase separation boundary of the blending system when the content of PVA in blends is over 80%,which indicates an excellent compatibility existed in blends. The changes of structure may be due to the strong hydrogen-bonding interaction between the hydroxyl groups （-OH） of HPC and PVA.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2010年第12期65-68,共4页
Polymer Materials Science & Engineering
基金
纤维材料改性国家重点实验室自主设立重大/重点研究课题(LZ0902)
关键词
共混
聚乙烯醇
羟丙基纤维素
相容性
氢键
blend
polyvinyl alcohol
hydroxypropyl cellulose
compatibility
hydrogen-bonding
