Journal
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume 46, Issue 17, Pages 5929-5944Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/pola.22909
Keywords
biomass; copolymerization; dispersed polymerization; emulsion polymerization; levulinic acid; living polymerization; RAFT; renewable chemical; renewable resources
Categories
Funding
- NSF [CTS0553516]
- DuPont.
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0934032] Funding Source: National Science Foundation
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The kinetics of free-radical emulsion polymerization of gamma-methyl-alpha-methylene-gamma-butyrolactone (MeMBL), a renewable monomer related to methyl methacrylate, are presented in detail for the first time, and stable polymer latices are prepared. The effects of different reaction parameters on free-radical emulsion polymerization of MeMBL are presented. Homogeneous nucleation is asserted to be the dominant path for particle formation. Miniemulsion copolymerization of MeMBL and styrene is also reported. In this case, the homogeneous nucleation process appears limited when using an oil soluble initiator. Both the RAFT miniemulsion polymerizations and RAFT bulk polymerizations are well controlled and narrow polydispersity copolymers are produced. Rate retardation is observed in the RAFT miniemulsion polymerizations compared with the free-radical polymerization and RAFT bulk polymerizations and the possible causes of the retardation are discussed. The reactivity ratios of MeMBL and styrene in RAFT bulk copolymerization are also determined. (c) 2008 Wiley Periodicals, Inc.
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