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- Title
Synthesis of Multifunctionalized Graft-Type Polyolefin-Based Elastomers with a High Utility Temperature.
- Authors
Ying, Wu Bin; Lee, Min Woo; Yang, Hee Sang; Moon, Da Som; Ko, Na Yeong; Lee, Bumjae; Zhu, Jin; Zhang, Ruoyu; Lee, Kyung Jin
- Abstract
A novel polyolefin-based elastomer of polyolefin- graft-poly( t-butylstyrene) is synthesized from styrene moieties via graft-from anionic living polymerization. The afforded elastomer comprises a soft poly(ethylene- t-1-hexene- t-divinylbenzene) segment and a hard poly( t-butylstyrene) [P( t-BS)] segment. The polymerization proceeds via complete lithiation of the pendent styrene groups (polyolefin elastomer) and subsequent graft anionic polymerization of 4- tert-butylstyrene (2000-10 000 g mol−1). The graft-from living anionic polymerization controls the grafting size with excellent efficiency by increasing the monomer concentration. To introduce functional groups into the polymer chain-end, vinyl isoprene units are introduced into the polyolefin- graft-poly( t-butylstyrene) anion to form polyolefin- graft-[poly( t-butylstyrene)- block-polyisoprene] via living block copolymerization. Subsequent graft chain-end multicarboxyl functionalization via thiol-ene 'click' reactions introduces carboxyl groups into the [P( t-BS)] graft chain-end. The water contact angle of this multicarboxyl functionalized product exhibits a sharper decrement, which affects its hydrophilicity significantly. This process produces a novel, well-defined functionalized graft-type polyolefin-based elastomer with a high utility temperature and excellent mechanical properties.
- Subjects
POLYOLEFIN synthesis; ELASTOMERS; GRAFT copolymers; POLYETHYLENE; POLYOLEFINS
- Publication
Macromolecular Chemistry & Physics, 2017, Vol 218, Issue 23, pn/a
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201700298