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Citation: HU Miao, WANG Zheng-Zhou, QU Bao-Jun. Vapor Phase Grafting of Vinyltrimethoxysilane and Its Crosslinking on Polypropylene[J]. Chinese Journal of Applied Chemistry, ;2006, 23(4): 349-352. shu

Vapor Phase Grafting of Vinyltrimethoxysilane and Its Crosslinking on Polypropylene

1.
State Key Laboratory of Fire Science and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026
2.

Corresponding author: QU Bao-Jun,
Received Date: 26 April 2005
Available Online: 2 July 2005
Fund Project: 国家自然科学基金(50273036) (50273036)国家重点基础研究专向基金(2001CB409600)资助项目 (2001CB409600)

Vapor phase grafting of vinyltrimethoxysilane(VTMS) onto polypropylene(PP) powders and its subsequent hydrolysis crosslinking were studied in this work.The vapor grafting mechanism of VTMS onto PP through free radical was studied.The effects of the VTMS monomer and initiator concentrations on the grafting degree of the silane and gel content of the crosslinked samples were investigated.FTIR and FTIR-PAS were used to analyze the grafted materials.The result shows that the diffusion conditions of the monomer and the initiator in the PP have significant influence on the VTMS grafting degree.The grafting degree of VTMS increases with increasing monomer and initiator concentrations,and this trend slows down when the concentrations of the monomer and the initiator are over 0.026 mol/L and 0.6%,respectively.
- polypropylene,
- vapor phase grafting,
- silane crosslinking
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