SYNTHESIS OF NANOSIZE POLY(METHYL METHACRYLATE) MICROLATEXES WITH HIGH POLYMER CONTENT BY A MODIFIED MICROEMULSION POLYMERIZATION

Citation
Wh. Ming et al., SYNTHESIS OF NANOSIZE POLY(METHYL METHACRYLATE) MICROLATEXES WITH HIGH POLYMER CONTENT BY A MODIFIED MICROEMULSION POLYMERIZATION, Polymer bulletin, 40(6), 1998, pp. 749-756
Citations number
29
Categorie Soggetti
Polymer Sciences
Journal title
ISSN journal
01700839
Volume
40
Issue
6
Year of publication
1998
Pages
749 - 756
Database
ISI
SICI code
0170-0839(1998)40:6<749:SONPMM>2.0.ZU;2-6
Abstract
Nanosize poly(methyl methacrylate) (PMMA) microlatexes with high PMMA/ surfactant ratio have been successfully prepared by a modified microem ulsion polymerization, i.e., continuous and slow addition of monomer ( MMA) to the polymerizing MMA microemulsion with mild stirring. Number- average diameters of 33-46 nm with narrow polydispersity (D-v/D-n = 1. 1) and polymer content of 6-24 wt% were achieved using low levels of s urfactant (dodecyltrimethylammonium bromide, DTAB)-less than 1 wt% of the reaction mixture. Particle diameter depended on polymerization tem perature, MMA content, and concentrations of initiator and surfactant. Larger particles were formed when temperature was too high, initiator concentration was too high, or surfactant concentration was too low.