Preparation and Characterization of PMAA/SiO2 Composite Particle Via Emulsion Polymerization

Ke Hong Zhang; Jun Juan Du; Hui Xiao; Yan Yuan

doi:10.4028/www.scientific.net/AMR.528.184

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 528Preparation and Characterization of PMAA/SiO2...

Preparation and Characterization of PMAA/SiO₂ Composite Particle Via Emulsion Polymerization

Abstract:

Silica gel particle was chemically modified by using 3-methacryloxypropyl trimethoxysilane (KH-570) as coupling agent. Then poly methyl acrylic acid (PMAA) was grafted on the surface of particles MPS-SiO2 with the method of Emulsion Polymerization, and grafting particles PMMA/SiO2 were prepared. The grafting particle PMAA/SiO2 was characterized by using FT-IR, TG and SEM. The experimental results show that the graft polymerization of methyl acrylic acid (MAA) on onto the surface of silica gel particles can successfully realized using the method of “graft from”. During the graft polymerization, the grafted polymer layer is a hindrance to the subsequent graft polymerization. When the grafted polymer layer reach to a certain density via overlapping and entwisting, a kinetic barrier will be built up. Hence, the grafting degree of the polymer under a certain condition has a limiting value.

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Periodical:

Advanced Materials Research (Volume 528)

Pages:

184-187

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.528.184

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Online since:

June 2012

Authors:

Ke Hong Zhang, Jun Juan Du, Hui Xiao, Yan Yuan

Keywords:

Emulsion Polymerization, Graft Degree, Graft Polymerization, Poly(methacrylic acid), Silica Gel

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