Preparation and characterization of nanosilica/poly(vinyl chloride-co-vinyl isobutyl ether) composite particles by in situ micro-suspension polymerization

The nano-SiO(2)/poly(vinyl chloride-co-vinyl isobutyl ether) (VC-VIBE) composite particles were synthesized by in situ micro-suspension polymerization, before which nano-SiO(2) was modified with silane coupling agent KH-570, dried and then dispersed in VIBE. The effects of the amount of KH-570, pH v...

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Published inHe cheng xiang jiao gong ye Vol. 37; no. 2; pp. 91 - 95
Main Authors Yang, Jian-Jun, Lu, Guo-Bin, Wu, Qing-Yun, Zhang, Jian-An, Wu, Ming-Yuan, Wang, Shen-Sheng
Format Journal Article
LanguageChinese
Published 15.03.2014
Subjects
Chlorides
Ethers
Magnetic resonance
Nanostructure
Particulate composites
pH
Polymerization
Reaction time
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Summary:The nano-SiO(2)/poly(vinyl chloride-co-vinyl isobutyl ether) (VC-VIBE) composite particles were synthesized by in situ micro-suspension polymerization, before which nano-SiO(2) was modified with silane coupling agent KH-570, dried and then dispersed in VIBE. The effects of the amount of KH-570, pH value, reaction time on grafting ratio of KH-570 onto nano-SiO(2) were investigated. The modified nano-SiO(2) and composite particles were characterized by Fourier transform infrared spectroscopy, H-nuclear magnetic resonance hydrogen spectrum, differential scanning calorimetry, thermogravimetric analysis and transmission electron microscope re-spectively. The results showed that the optimum conditions for nano-SiO(2) surface modification were the mass ratio of KH-570 to nano-SiO(2) 1.2:1, pH value 8.0-9.0, the reaction time 8 h. The prepared nano-SiO(2)/VC-VIBE composite particles used nano-SiO(2) as core, the average size of composite particles was 150-250 nm, and the diameter of core 100-150 nm.
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ISSN:1000-1255