Method for grafting environment response macromolecule on nano silicon dioxde surface
Title：
Method for grafting environment response macromolecule on nano silicon dioxde surface
Application Number：
 200710119716
Application Date：
 2007/07/31
Announcement Date：
 2008/03/12
Pub. Date：
Publication Number：
 101139426
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C08F 292/00, C08K 3/36
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Yuan Jinying, Zhou Lilin, Yuan Weizhong, Zhou Mi, Sui Xiaofeng
Key Words：
 grafting method, environment response macromolecule, nano silicon dioxde, surface
Abstract：
 The present invention relates to a preparation method for organic-inorganic hybrid materials through grafting polymerization-environment responsive macromolecules on the nanometer silicon dioxide surface, belonging to the organic-inorganic hybrid materials synthesis and preparation field. The present invention takes advantage of the action of silicon dioxide with hydroxyl on the surface with the silane coupling agent 3-amino-propyl silane to enable the end to be of an amino group; then the product reacts with the nanometer particle generated from the bromination propionyl bromine reaction; The end of the nanometer particle is the ATRP initiator; finally, the polymerization of the environmentally-responsive macromolecules on the nanometer silicon dioxide surface is initiated in the present of CuBr and PMDETA so as to obtain the target product. The graft rate of the silicon dioxide virgule environmentally-responsive macromolecule core-shell structure nanometer hybrid particles is 60 percent to 70 percent. No reunion of the nanometer hybrid particles appears. The nanometer hybrid particles are uniformly dispersed with environmental responsiveness.
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