Controlled/living photopolymerization of methyl methacrylate in miniemulsion mediated by HTEMPO
Xiaoxuan LIU 1Yanni JING 1Yingkun BAI1
作者信息
- 1. Department of Polymeric Material and Engineering, College of Material and Energy, Guangdong University of Technology, Guangzhou 510006, China
- 折叠
Abstract
Controlled/living photopolymerization of methyl methacrylate (MMA) in miniemulsion mediated by 4-hydroxy-2,2,6,6-tetramethyl-piperidinyloxy (HTEMPO) was carried out at ambient temperatures. MMA miniemulsion was prepared by using an anionic surfactant with cetylalcohol as a co-stabilizer. The photopolymerization led to stable lattices and they were obtained with no coagulation during synthesis and no destabilization over time. It was found that the obtained MMA homopolymers exhibited relatively narrow mole-cular weight distribution (PDI = 1.27- 1.36) which was characterized by GPC. The plots of number-average molecular weight in (Mn) vs. Conversion and ln([MO]/[M]) vs. Time both were linear indicating that the reaction was a controlled/living free radical polymerization.
Key words
methyl methacrylate (MMA), controlled/ living photopolymerization, miniemulsion, 4-hydroxy-2,2,6,6- tetramethyl-piperidinyloxy (HTEMPO)引用本文复制引用
出版年
2008
NETL
NSTL
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