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Synthesis and properties of a novel perfluorononenyloxy group containing polyarylates

✍ Scribed by Chun-Shan Wang; Rong-Wen Yang; Kuo-Run Hsu

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
146 KB
Volume
36
Category
Article
ISSN
0887-624X

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✦ Synopsis

A series of novel perfluorononenyloxy group containing polyarylates were synthesized by a high-temperature solution condensation of 5-(perfluorononenyloxy)isophthaloyl chloride ( II) with various aromatic diols in o-dichlorobenzene. All the polyarylates were amorphous and readily soluble in many organic solvents such as ochlorophenol, o-dichlorobenzene, chloroform, and polar aprotic solvents at room temperature or on heating. Transparent, tough, and flexible films of these polymers could be cast from the o-chlorophenol solutions. The polymers having inherent viscosity of 0.61-1.63 dL/g were obtained in quantitative yields. These polymers were thermally quite stable. The glass transition temperatures of these polyarylates were in the range of 219-242ЊC by DSC and 224-251ЊC by DMA, and the 10% weight loss temperatures in nitrogen and air were above 415 and 397ЊC, respectively. Moreover, these polymers maintained good mechanical properties (G Γ‡ 10 8 Pa) up to 220ЊC and had lower moisture absorption than common polyarylates. The dielectric constants of these polymers ranged from 3.23 to 3.75.

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