Synthesis of PMMA/Polysiloxane Core-Shell Latex

• Main Authors: Yu Chengbing, Yang Dan, Wu Fangfang, Shi Xiaolong
• Format: Article
• Language: English
• Published: EDP Sciences 2015-01-01
• Series: MATEC Web of Conferences
• Subjects: : silicon-acrylic latex; core-shell; cationic emulsion polymerization; size distribution; heat resistance
• Online Access: http://dx.doi.org/10.1051/matecconf/20152502004

In this study, silicon-acrylic latex, consisting of poly (methyl methacrylate) (PMMA) as the core and modified polysiloxane as the shell, had been successfully synthesized via cationic emulsion polymerization. The structure of the silicon-acrylic latex was confirmed by means of DLS, FTIR and TGA. There was an increase of 24.74 nm in average particle size and a shift of the size distribution to large sizes for core-shell particles in comparison with the original PMMA core particles, which indicated the formation of core-shell structure. The typical absorption peaks of Si-O-Si and Si-O-C in infrared spectrum indicated that the hydroxyl groups on the PMMA surface had reacted with the silanol groups, which could be confirmed by heterogeneous two-component system form TGA test.