Citation: Zhen Zhong Huang, Xue Mei Wan, Hai Bo Xiao, Shou Ri Sheng, Cai Sheng Song. A novel soluble polyamide containing xanthene structure and trifluoromethylphenoxy pendent[J]. Chinese Chemical Letters, ;2010, 21(2): 242-244. doi: 10.1016/j.cclet.2009.10.011 shu

A novel soluble polyamide containing xanthene structure and trifluoromethylphenoxy pendent

College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China

Received Date: 3 July 2009

Fund Project: We thank the National Natural Science Foundation of China (No. 20664001) and the Research Program of Jiangxi Province Department of Education (No. 2007–-123, GJJ08166 and GJJ09138) for the financial support.

A novel polyamide containing xanthene structure and trifluoromethylphenoxy pendent was prepared from 9,9-bis[4-(4aminophenoxy)phenyl]xanthene,a novel diamine with 2-(4-trifluoromethylphenoxy)terephthaloyl chloride,by the low temperature polycondensation.This new polyamide with the inherent viscosity of 0.95 dL/g was amorphous and readily soluble in polar solvents such as DMAc,m-cresol,etc.This polyamide showed the glass transition temperature(T_g)of 236℃,decomposition temperature (T_d)at 5% weight loss of 455℃ and char yield of 56% at 800℃ in N₂.Transparent,flexible,and tough film of the polymer cast from DMAc solution exhibited tensile strength of 93 MPa,elongation at break of 14%,initial moduli of 2.2 GPa.The electric properties such as the dielectric constant of 3.03(1 MHz)and surface resistance(2.78×10¹⁴Ω),and the moisture uptake of 1.36% were also described.
- Polyamide,
- Xanthene cardo group,
- Trifluoromethylphenoxy pendent,
- Soluble
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