Journal article
Polyisobutylene RAFT CTA by a Click Chemistry Site Transformation Approach: Synthesis of Poly(isobutylene-b-N-isopropylacrylamide)
Macromolecules, v 42(21), pp 8044-8051
10 Nov 2009
Abstract
A novel block copolymer, composed of polyisobutylene (PIB) and poly(N-isopropylacrylamide) (PNIPAM) segments, was synthesized The PIB block was prepared via quasiliving cationic polymerization and end-functionalized by in-situ quenching to yield telechelic halogen-terminated PIB Azido functionality was obtained by displacement of the terminal halogen through nucleophilic substitution. which was confirmed by both H-1 and C-13 NMR Coupling of an alkyne-functional chain transfer agent (CTA) to azido PIB was successfully accomplished through a copper-catalyzed click reaction Structure of the resulting PIB-based macro-CTA was verified with H-1 NMR FTIR and GPC, whereas coupling reaction kinetics were monitored by real-time variable temperature (VT) H-1 NMR. Subsequently, the function of this macro-CTA was demonstrated by RAFT polymerization of NIPAM for synthesis of the second block RAFT kinetics was investigated under a variety of reaction conditions using VT NMR, and the resulting block copolymers were characterized by H-1 NMR and GPC Aqueous Solution properties were probed by dynamic light scattering confirming the presence of self-assembled aggregates with reversible temperature-sensitive responsiveness
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Details
- Title
- Polyisobutylene RAFT CTA by a Click Chemistry Site Transformation Approach: Synthesis of Poly(isobutylene-b-N-isopropylacrylamide)
- Creators
- Andrew J. D. Magenau - Univ So Mississippi, Sch Polymers & High Performance Mat, Hattiesburg, MS 39402 USANemesio Martinez-Castro - Univ So Mississippi, Sch Polymers & High Performance Mat, Hattiesburg, MS 39402 USADaniel A. Savin - Univ So Mississippi, Sch Polymers & High Performance Mat, Hattiesburg, MS 39402 USARobson F. Storey - Univ So Mississippi, Sch Polymers & High Performance Mat, Hattiesburg, MS 39402 USA
- Publication Details
- Macromolecules, v 42(21), pp 8044-8051
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 8
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000271233600013
- Scopus ID
- 2-s2.0-70449412078
- Other Identifier
- 991020531938904721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Polymer Science