Synthesis of Poly(vinyl acetate)-block-poly(dimethylsiloxane)-block-poly(vinyl acetate) Copolymers by Iodine Transfer Photopolymerization in Miniemulsion |
| |
| Authors: | Jeff Tonnar Emmanuel Pouget Patrick Lacroix-Desmazes Bernard Boutevin |
| |
| Institution: | Institut Charles Gerhardt - UMR5253?CNRS/UM2/ENSCM/UM1 - Ingénierie et Architectures Macromoléculaires, Ecole Nationale Supérieure de Chimie de Montpellier, 8 rue de l'Ecole Normale, 34296 Montpellier Cedex 5, France |
| |
| Abstract: | Summary: Iodine transfer polymerization of vinyl acetate in aqueous miniemulsion, initiated by UV radiation in the presence of an α,ω-diiodo-poly(dimethylsiloxane) macrophotoiniferter has been performed. The formation of a triblock copolymer latex PVAc-b-PDMS-b-PVAc has been evidenced by 1H-NMR and size exclusion chromatography. The size of the PDMS and PVAc blocks were modulated thus opening the way to a wide range of copolymers with different properties. A detailed study of the reaction mechanism showed the importance of the aqueous dispersed medium to achieve a controlled polymerization. |
| |
| Keywords: | block copolymers iodine transfer polymerization miniemulsion photopolymerization poly(dimethylsiloxane) poly(vinyl acetate) |
|
