INTERPENETRATING POLYMER NETWORKS FROM CASTOR OIL-BASED POLYURETHANE AND POLY(ETHYL METHACRYLATE) .17.

被引:38
作者
PATEL, P [1 ]
SUTHAR, B [1 ]
机构
[1] SARDAR PATEL UNIV,DEPT CHEM,VALLABH VIDYANAGAR 388120,GUJARAT,INDIA
关键词
castor oil; crosslinker ethylene glycol dimethacrylate; dielectric properties; dynamic mechanical thermal analysis; interpenetrating polymer networks; polyurethane; poly(ethyl methacrylate); scanning electron microscopy;
D O I
10.1016/0032-3861(90)90129-M
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Two-component interpenetrating polymer networks (IPNs) of castor oil-based polyurethane (PU) and poly(ethyl methacrylate) (PEMA) were prepared by sequential polymerization. The liquid polyurethanes were formed by reacting the hydroxyl group of castor oil with isophorone diisocyanate at different NCO/OH ratios. These polyurethanes were swollen in ethyl methacrylate monomer, which was subsequently polymerized by radical polymerization initiated with benzoyl peroxide in the presence of crosslinkers, ethylene glycol dimethacrylate and 1,3-propanediamine. A series of PU/PEMA interpenetrating polymer networks (IPNs) were obtained as tough films. These IPNs were characterized in terms of: resistance to chemical reagents, thermal behaviour and dynamic mechanical thermal analysis. The morphology was determined by scanning electron microscopy, and dielectric properties at different temperatures were studied. © 1990.
引用
收藏
页码:339 / 343
页数:5
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