摘要
聚乙二醇在NaH的作用下和对氯甲基苯乙烯反应制得聚氧乙烯大分子单体 ,然后在乙醇 /水的介质中通过聚氧乙烯大分子单体和苯乙烯的分散共聚制得粒径范围在 0 5～ 1 5 μm ,粒径分布接近单分散的两亲聚合物微球 .对影响微球粒径和粒径分布的各个因素进行了研究 .
Poly( ethylene oxide)macromonomer was prepared by the reaction of poly(ethylene glycol)and vinyl benzyl chloride with the help of NaH. Through dispersion copolymerization of poly(ethylene oxide) macromonomer and styrene carried out in the media of ethanol/water, amphiphilic microspheres ranging from 0.5 similar to1.5 mum were prepared. The resulted amphiphilic microspheres were characterized by scanning electron microscope, IR etc, and the formation of copolymer was confirmed by IR spectra of amphiphilic microspheres and solubility-of amphiphilic microspheres in the media of benzene. The factors which affected the diameter and diameter distribution of microspheres, including concentration of monomer, concentration of dispersant and composition of the media of reaction, were systematically investigated.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2001年第1期62-67,共6页
Acta Polymerica Sinica
基金
香港理工大学合作项目
关键词
两亲聚合物微球
聚氧乙烯
分散聚合
聚苯乙烯
制备
amphiphilic polymer
microspheres
PEO macromonomer
dispersion polymerization
