Monodisperse latex with variable glass transition temperature and particle size for use as matrix starting material for conductive polymer composites
Academic Article
Overview
Research
Identity
Additional Document Info
Other
View All
Overview
abstract
A series of surfactant-free monodisperse latices were prepared with varying glass transition temperatures (Tg) and particle sizes using methyl methacrylate (MMA) and butyl acrylate (BA) monomers. Latices with Tgs between -11 and 105C were synthesized by varying the MMA to BA ratio during batch polymerization. The particle size of latices with a Tg of 19C was varied by independently changing temperature, initiator concentration and ionic strength of the aqueous reaction medium. These latices provide a model matrix starting material for carbon black-filled electrically conductive polymer composites. When latex with a number average particle diameter (Dn) of 930 nm is substituted for a solution-based polymer the percolation threshold of the final conductive composite drops from 14.5 to 1.45 vol% carbon black. 2001 Elsevier Science Ltd.