학술논문

Synthesis of PMMA/Polysiloxane Core-Shell Latex
Document Type
article
Source
MATEC Web of Conferences, Vol 25, p 02004 (2015)
Subject
silicon-acrylic latex
core-shell
cationic emulsion polymerization
size distribution
heat resistance
Engineering (General). Civil engineering (General)
TA1-2040
Language
English
French
ISSN
2261-236X
Abstract
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.