Influence of Steric Hindrance Between Hydrogen Atoms of Linkage Groups and Adjacent Phenyls on Properties of Polyimide
PANG Yu-wei, LUO Long-bo, CHEN Yi, ZHANG Peng, WANG Xu, PENG Chao-rong, LIU Xiang-yang
Chemical Research in Chinese Universities . 2012, (5): 926 -930 .