1-(3-Bromo-4-fluorophenyl)methanamine hydrochloride (1:1)
CAS Number:
202865-68-7
Molecular Formula:
C7H8BrClFN
Catalytic synthesis of polyethylene-block-polynorbornene copolymers using a living polymerization nickel catalyst
Literature Information
Publication Date
2014-06-26
DOI
10.1039/C4PY00701H
Impact Factor
5.582
Authors
Haiyang Gao, Yong Liu, Guiliang Li, Zefan Xiao, Guodong Liang, Qing Wu
View Original
Abstract
Polyethylene-block-polynorbornene (PE-b-PNB) copolymers were synthesized using an amine–imine nickel catalyst by sequential monomer addition in a living fashion. Norbornene homopolymerizations catalyzed by amine–imine nickel catalyst were firstly evaluated and high-molecular-weight polynorbornenes (PNBs) with polydispersities of 1.9–3.0 were produced. Introduction of the PE building block can significantly slow down the insertion rate of the norbornene monomer to afford a low-molecular-weight PNB block. Well-defined PE-b-PNB block copolymers (Mw/Mn < 1.16) were prepared by combination of living polymerization of ethylene for 15 min and sequential polymerization of norbornene. The block copolymer architecture was studied and confirmed by FT-IR, NMR, DSC, and transmission electron microscopy (TEM).
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Source Journal
Polymer Chemistry
CiteScore:
8.6
Self-citation Rate:
7.3%
Articles per Year:
457
Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.
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