Paper Title:
Graft Polymerization of p-Vinylphenylsulfonylhydrazide onto Nano-Silica and its Effect on Dispersion of the Nanoparticles in Polymer Matrix
  Abstract

To promote dispersion of nano-silica in polypropylene (PP), a polymerizable foaming agent p-vinylphenylsulfonylhydrazide was synthesized and grafted onto the nanoparticles via free-radical polymerization. The results of thermogravimetric analysis (TGA) showed that the sulfonyl hydrazide groups of poly(p-vinylphenylsulfonylhydrazide) acquired the desired thermal decomposition ability, which might be related to their internal oxidation-reduction. Electron microscopy observation indicated that the grafted nanoparticles exhibit greatly improved dispersion in PP owing to the fact that the sulfonyl hydrazine groups on the grafted polymer inside the agglomerates decomposed like blowing agent to form polymer bubbles, leading to rapid inflation of the surrounding matrix that pulled apart the agglomerated nanoparticles during melting mixing.

  Info
Periodical
Key Engineering Materials (Volumes 334-335)
Edited by
J.K. Kim, D.Z. Wo, L.M. Zhou, H.T. Huang, K.T. Lau and M. Wang
Pages
729-732
DOI
10.4028/www.scientific.net/KEM.334-335.729
Citation
L. F. Cai, M. Z. Rong, M. Q. Zhang, W. H. Ruan, "Graft Polymerization of p-Vinylphenylsulfonylhydrazide onto Nano-Silica and its Effect on Dispersion of the Nanoparticles in Polymer Matrix", Key Engineering Materials, Vols. 334-335, pp. 729-732, 2007
Online since
March 2007
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$32.00
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