Journal article
Site Transformation of Polyisobutylene Chain Ends into Functional RAFT Agents for Block Copolymer Synthesis
Macromolecules, v 42(7), pp 2353-2359
14 Apr 2009
Abstract
Block copolymers consisting of polyisobutylene (PLB) and either poly(methyl methacrylate) (PMMA) or polystyrene (PS) block segments were synthesized by a site transformation approach combining living cationic and reversible addition-fragmentation transfer (RAFT) polymerizations. The initial PIB block was synthesized via quasi-living cationic polymerization using the TMPCl/TiCl4 initiation system and Subsequently converted into a hydroxyl-terminated PIB. Site transformation of the hydroxyl-terminated PIB into a macro-chain-transfer agent (PIB-CTA) was accomplished by N,N'-dicyclohexylcarbodiimide/dimethylaminopyridine-catalyzed esterification with 4-cyano-4-(dodecylsulfanylthiocarbonylsulfanyl) pentanoic acid. Structure of the PIB-CTA was confirmed by both H-1 and C-13 NMR spectroscopy. The PIB-CTA was then employed in a RAFT polymerization of either methyl methacrylate or styrene, resulting in PIB block copolymers with narrow polydispersity index and predetermined molecular weights confirmed by both H-1 NMR and GPC.
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Details
- Title
- Site Transformation of Polyisobutylene Chain Ends into Functional RAFT Agents for Block Copolymer Synthesis
- Creators
- Andrew J. D. Magenau - University of Southern MississippiNemesio Martinez-Castro - University of Southern MississippiRobson F. Storey - University of Southern Mississippi
- Publication Details
- Macromolecules, v 42(7), pp 2353-2359
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 7
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000264992300011
- Scopus ID
- 2-s2.0-66649111081
- Other Identifier
- 991020531978604721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Polymer Science