Light-initiated polymerization of methyl methacrylate with p-X-C6H4SiH3 (X = F, CH3, OCH3)p

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Bo-Hye Kim, magarett@hanmail.net1, Jin Jun, jinjun@dsu.ac.kr2, So-Yeun Kim, baha8@naver.com3, Myoung-Hee Kim, 9878002@hanmail.net3, You-Jeong Kim, okkie52@hanmail.net3, Hee-Gweon Woo, hgwoo@chonnam.ac.kr3, Mi-Kyung Han, mi-han@northwestern.edu4, and Hong Li, hongli@nankai.edu.cn5. (1) Department of Korean Medicinal Supply, Dongshin University, Naju, 520-714, South Korea, (2) Department of Optometry and Optic Science, Dongshin Universiy, Naju, 520-714, South Korea, (3) Department of Chemistry, Chonnam National University, 300 Yongbong-Dong, Buk-Gu, Gwangju, 500-757, South Korea, (4) Department of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston, IL 60208, (5) Institute of Polymer Chemistry, Nankai University, Tianjin, 300071, China
This work describes the bulk photopolymerization of MMA with para-substituted phenylsilanes 1-3. For these primary silanes, while the polymerization yields and the molecular weights of the poly(MMA)s possessing the respective silyl end group decrease, the TGA residue yields and the intensities of Si-H stretching IR absorption bonds increase as the molar ratio of silane over MMA increases. The polymerization yields and polymer molecular weights of MMA with the silanes 1-3 increase in the order of 3 < 1 < 2. The hydrosilyl moieties, once attached to the poly(MMA)s as end group, could be left untouched at mild temperature before the pyrolysis occurring at high temperature. We showed the easy control of polymerization yield, polymer molecular weight, and thermal stability by adding hydrosilanes into the photopolymerization system. The hydrosilanes may act competitively and concurrently as both chain-initiation and chain-transfer agents in the bulk photopolymerization of MMA..
 

General Papers: Functional Materials
6:00 PM-8:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Polymer Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007