Preparation of Polyacrylate-Vinylidene Chloride/Nanomontmorillonite Composite Emulsion

Polyacrylate-vinylidene chloride/montmorillonite copolymer composite emulsion was prepared by seed emulsion polymerization with vinylidene chloride and montmorillonite as the modifiers.The influences of the montmorillonite content on the composite emulsion particle diameter,tensile strength,elongation at break and thermal stability were studied.The results show that the average particle size of PEA-VDC/MMT copo-lymer latex particles increased from 141 nm to 243 nm when the montomorillonite content was increased from 1% to 5%.The largest tensile strength and the elongation at break of the composite membrane were respe-ctively 3.23 MPa and 1 330% when the montomorillonite content was 2%.When the montomorillonite content was increased from 1% to 4%,the char yield and thermal decomposition temperature of PEA-VDC were enhanced,and the copolymer′s thermal stability was strengthened,too.