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Synthesis and characterization of polyoctenamer with WCl 6 e − AlCH 2 Cl 2 catalyst system via ring‐opening metathesis polymerization
Author(s) -
Çetinkaya Sevil,
Karabulut Solmaz,
Düz Bülent,
Ïmamoǧlu Yavuz
Publication year - 2005
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.863
Subject(s) - chemistry , polymerization , differential scanning calorimetry , gel permeation chromatography , metathesis , polymer chemistry , monomer , ring opening metathesis polymerisation , molar mass distribution , polymer , glass transition , ring opening polymerization , cyclooctene , norbornene , melting point , organic chemistry , catalysis , physics , thermodynamics
A typical low‐strain monomer, cyclooctene, was polymerized via ring‐opening metathesis polymerization with electrochemically produced active species. The structural properties of the polyoctenamer were determined by NMR, gel‐permeation chromatography and differential scanning calorimetry. Analysis of the polyoctenamer microstructure by 1 H and 13 C NMR spectroscopy indicates that the polymer contains a highly cis stereoconfiguration of the double bonds (σ c = 0.75). The resulting polymer is of low molecular weight and has a reasonably broad molecular weight distribution ( M w = 18 000, PDI = 1.9). The glass transition temperature and melting point of the polyoctenamer are −11.3 °C and 36.5 °C respectively. Copyright © 2005 John Wiley & Sons, Ltd.