ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary Homopolymerization of p-[tris(trimethylsilyl)silyl]phenylacetylene [p(Me3Si)3SiPA] by Rh catalyst provided insoluble polymer. On the other hand, copolymerization of p(Me3Si)3SiPA with p-(trimethylsilyl)phenylacetylene (pMe3SiPA) at 80:20, 50:50, and 20:80 feed ratios afforded high molecular weight copolymers (M w 〉 1×106), all of which were soluble in common solvents such as toluene and chloroform. The mole ratios of p(Me3Si)3SiPA to pMe3SiPA unit in copolymers were close to those in the feeds. The oxygen permeability increased monotonously with increasing p(Me3Si)3SiPA content of copolymer in correspondence with fractional free volume; the value of the copolymer for the 80:20 feed ratio reached 770 barrers.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/PL00006835
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