A novel soluble polyamide containing xanthene structure and trifluoromethylphenoxy pendent
作者:Zhen Zhong Huang、Xue Mei Wan、Hai Bo Xiao、Shou Ri Sheng、Cai Sheng Song
DOI:10.1016/j.cclet.2009.10.011
日期:2010.2
A novel polyamide containing xanthene structure and trifluoromethylphenoxy pendent was prepared from 9,9-bis[4-(4-aminophenoxy)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 degrees C. decomposition temperature (T(d)) at 5% weight loss of 455 degrees C and char yield of 56% at 800 degrees C in N(2). 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 x 10(14) Omega). and the moisture uptake of 1.36% were also described. (C) 2009 Shou Ri Sheng. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.