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Synthesis of new Amphiphilic diblock copolymers containing poly(ethylene oxide) and poly(alpha-olefin)
Lu, YY; Hu, YL; Wang, ZM; Manias, E; Chung, TC
2002-10-15
Source PublicationJOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
ISSN0887-624X
Volume40Issue:20Pages:3416-3425
AbstractThis article discusses an effective route to prepare amphiphilic diblock copolymers containing a poly(ethylene oxide) block and a polyolefin block that includes semicrystalline thermoplastics, such as polyethylene and syndiotactic polystyrene (s-PS), and elastomers, such as poly(ethylene-co-1-octene) and poly(ethylene-co-styrne) random copolymers. The broad choice of polyolefin blocks provides the amphiphilic copolymers with a wide range of thermal properties from high melting temperature similar to270 degreesC to low glass-transition temperature similar to -60 degreesC. The chemistry involves two reaction steps, including the preparation of a borane group-terminated polyolefin by the combination of a metallocene catalyst and a borane chain-transfer agent as well as the interconversion of a borane terminal group to an anionic (-O K) terminal group for the subsequent ring-opening polymerization of ethylene oxide. The overall reaction process resembles a transformation from the metallocene polymerization of alpha-olefins to the ring-opening polymerization of ethylene oxide. The well-defined reaction mechanisms in both steps provide the diblock copolymer with controlled molecular structure in terms of composition, molecular weight, moderate molecular weight distribution (M-w/M-n < 2.5), and absence of homopolymer. (C) 2002 Wiley Periodicals, Inc.
KeywordAmphiphilic Polymer Block Copolymers Polyolefins Polyethylene (Pe) Syndiotactic Polystyrene Poly(Ethylene-co-styrene) Poly(Ethylenc-co-l-octene) Poly(Ethylene Oxide) Blends
DOI10.1002/pola.10427
Indexed BySCI
Language英语
WOS IDWOS:000178180400010
PublisherJOHN WILEY & SONS INC
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78270
Collection中国科学院化学研究所
Corresponding AuthorChung, TC
Affiliation1.Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
2.Chinese Acad Sci, State Key Lab Engn Plast, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Lu, YY,Hu, YL,Wang, ZM,et al. Synthesis of new Amphiphilic diblock copolymers containing poly(ethylene oxide) and poly(alpha-olefin)[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2002,40(20):3416-3425.
APA Lu, YY,Hu, YL,Wang, ZM,Manias, E,&Chung, TC.(2002).Synthesis of new Amphiphilic diblock copolymers containing poly(ethylene oxide) and poly(alpha-olefin).JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,40(20),3416-3425.
MLA Lu, YY,et al."Synthesis of new Amphiphilic diblock copolymers containing poly(ethylene oxide) and poly(alpha-olefin)".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 40.20(2002):3416-3425.
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