Polymerization of 1-(1-Naphthyl)-1-propyne by Nb and Ta Catalysts and Polymer Properties: Effects of the 1-Naphthyl Group
- 1 January 1995
- journal article
- research article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 68 (1) , 398-402
- https://doi.org/10.1246/bcsj.68.398
Abstract
1-(1-Naphthyl)-1-propyne polymerized in the presence of NbCl5–cocatalyst systems to give virtually selectively a new polymer ca. 3 × 105) in high yields. Catalysts based on TaCl5 produced mixtures of the polymer and cyclotrimers. The polymer was a pale-yellow solid soluble in various organic solvents (e.g., toluene, CHCl3), and formed a free-standing film on solution casting. The onset temperature of the weight loss of the polymer in air was ca. 340 °C, which is higher than that (280 °C) of poly(1-phenyl-1-propyne) [poly(1-PP)]. The oxygen permeability coefficient at 25 °C was 80 barrers and one order of magnitude higher than that of poly(1-PP). These results are explicable in terms of the steric effects of the 1-naphthyl group.Keywords
This publication has 6 references indexed in Scilit:
- Synthesis and properties of poly (diphenylacetylenes) having aliphatic para‐substituentsJournal of Polymer Science Part A: Polymer Chemistry, 1994
- Diffusion and solution of gases in substituted polyacetylene membranesPolymer, 1988
- Effects of organometallic cocatalysts on the polymerization of disubstituted acetylenes by TaCl5 and NbCl5Journal of Polymer Science Part A: Polymer Chemistry, 1987
- Polymerization of aliphatic acetylenes. X. Polymerization of internal octynes and hexynes by halides of niobium(V) and tantalum(V)Journal of Polymer Science Part A: Polymer Chemistry, 1986
- Effect of organometallic cocatalysts on the polymerization of 1-phenyl-1-propyne by tantalum pentachloride (TaCl5) and niobium pentachloride (NbCl5)Macromolecules, 1985
- Polymerization of 1-phenyl-1-alkynes by halides of niobium and tantalumMacromolecules, 1985