Polymerization and polymer properties of (p-tert-butyl-o,o-dimethylphenyl)acetylene

✍ Scribed by Tatsuhiro Yoshida; Yoshiharu Abe; Toshio Masuda; Toshinobu Higashimura

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 561 KB
• Volume: 34
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(199608)34:11<2229::aid-pola17>3.0.co;2-h

✦ Synopsis

SYNOPSIS

(p-tert-Butyl-o,o-dimethylpheny1)acetylene (BDMPA) polymerized in high yields in the presence of W and Mo catalysts. Especially the W(CO)&C1,-hU catalyst quantitatively produced a polymer totally soluble in toluene and chloroform. The weight-average molecular weight of this polymer exceeded 2 X lo6. Poly(BDMPA) was a dark brown solid, and had alternating double bonds along the main chain. The weight loss of the polymer in air occurred only above 300°C, indicating a fairly high thermal stability. A free-standing film could be fabricated by solution casting. The electrical conductivity of the polymer at 25°C was 1 X S cm-'. The oxygen permeability coefficient and the separation factor of 0, vs. N, of the polymer at 25OC were 67 barrers and 3.2, respectively.