Jun'lchi Fujlmori, T. Masuda, T. Higashimura
Jul 1, 1988
Citations
0
Influential Citations
14
Citations
Journal
Polymer Bulletin
Abstract
SummaryThe polymerization of 1-(trimethylsilyl)-1-propyne [CH3C≡CSi(CH3)3] catalyzed by NbCl5 in cyclohexane solution produced a polymer having a narrow molecular weight distribution (MWD). In this polymerization, the number-average molecular weight (Mn) of the polymer increased in direct proportion to conversion, while the MWD of the polymer remained narrow (Mw/Mn∼ 1.2) irrespective of the conversion. Poly[1-(trimethylsilyl)-1-propynels having narrow MWD and Mn in the range 1×104 –20×104 could be obtained by changing the ratio of monomer to catalyst. Thus, the present polymerization involves a long-lived propagating species, and provides a useful method for synthesizing poly[1-(trimethylsilyl)-1-propyne] with a narrow MWD.