首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Photocrosslinking of functionalized rubber. III. Polymerization of multifunctional monomers in epoxidized liquid natural rubber
Authors:C Decker  H Le Xuan  T Nguyen Thi Viet
Abstract:Different types of tridimensional polymer networks have been synthesized by photoinitiated polymerization of difunctional monomers blended to an epoxidized natural rubber. The crosslinking reaction was followed by infrared spectroscopy and shown to proceed extensively within less than 1 s for the cycloepoxy, vinyl ether, and acrylate monomers used. By acting as a plasticizer, the monomer was found to markedly accelerate the ring-opening polymerization of the epoxy groups of the rubber chain. Cationic polymerization continues to proceed effectively after the UV-exposure, until total consumption of the epoxy groups. The nature of the comonomer has a strong influence on the properties of the crosslinked rubber. Low-modulus polymers were obtained with divinyl ether monomers, while hard but still flexible films were obtained with dicycloepoxy and diacrylate monomers. © 1996 John Wiley & Sons, Inc.
Keywords:photopolymerization  crosslinking  rubber  epoxide  acrylate  vinyl ether
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号