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http://hdl.handle.net/11375/19466
Title: | Silane Based Radical Polymerization: Functionalized Homopolymers and Copolymers |
Authors: | Stefanac, Tomislav |
Advisor: | Brook, M. A. |
Department: | Chemistry |
Keywords: | silane, radical, polymerization, functionalized, homopolymers, copolymers, vinyl groups, oligomers |
Publication Date: | Sep-1994 |
Abstract: | <p> This thesis presents a study on silane based polymerization in two parts. </p> <p> In Part A, diphenylvinylsilane (1) underwent oligomerization with initiation by azo(bisisobutyronitrile) (AIBN) or benzoyl peroxide (BPO). The vinyl groups were preferentially consumed under either set of conditions. Several products were isolated; these included oligomers 3, an AIBN adduct 4, a dimer 5, and a trimer 6. The residual SiH moieties could be subsequently coupled hydrosilylatively with alkynes or vinylsilicones. The efficiency of the radical reactions was very low. 15% starting material was recovered even with 200 mol% of initiating radicals added to the reaction mixture. The relative radical reactivities of the two functional groups is discussed.</p> <p> In Part B, 1 was radically copolymerized with styrene and methyl methacrylate (MMA). From the results of infrared and 1H NMR it was determined that 1 participated in copolymerization via a vinyl type polymerization and not in the form of a hydrogen-transfer type polymerization. Residual SiH groups along the backbone of the polymer remained reactive. A vinylsilicone and 9-vinylanthracene were grafted onto the copolymer from MMA and 1 by hydrosilylation and radical methods, respectively.</p> |
URI: | http://hdl.handle.net/11375/19466 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Stefanac_Tomislav_1994Sept_Masters..pdf | 2.8 MB | Adobe PDF | View/Open |
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