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Gas phase polymerization of cyclopentene
Author(s) -
Ismail F.,
Léonard J.
Publication year - 1986
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19860060124
Subject(s) - cyclopentene , polymerization , molar mass , polymer , monomer , polymer chemistry , molar mass distribution , branching (polymer chemistry) , activation energy , kinetic energy , materials science , tungsten , chemistry , organic chemistry , catalysis , physics , quantum mechanics
Pure gaseous cyclopentene is found to polymerize on a glass surface when the polymerization is initiated with tungsten hexachloride. The polymer thus formed is colourless and has a high molar mass with a narrow molecular mass distribution. Polymerizations are carried out in the 10 to 60° C temperature range. From kinetic measurements, an overall activation energy of 69,0 kJ is obtained for the conversion of gaseous monomer to condensed polymer. NMR analyses show a distribution of cis ‐and trans ‐configurations of the double bonds in the polymer and the absence of any detectable branching.