Synthesis and Characterization of Copolyimides from s-BPDA/i-BPDA with Different Molar Ratio
WANG Xiang, ZHANG Peng, CHEN Chun-Hai, LI Peng, WANG Dong-Ji, DANG Guo-Dong*
Chem. J. Chinese Universities . 2010, (11): 2289 -2292 .