摘要
?The liquid crystallinity of the dimer of 4-benzoyloxybenzoic acid (BBA), with ex-cellent melt flow property was observed. The axial ratio (l/d) of (BBA), was calcu1ated tobe 5- 8 whlch is large en0ugh to exhlbit Iiquid crystalline phase. The nematic phase was sta-ble at 230 C. At higher temperature(270C ), the transesterification reaction occurred. Theeutectic temperature of BBA and 4-acetoxybenzoic acid is l75 C。
?The liquid crystallinity of the dimer of 4-benzoyloxybenzoic acid (BBA), with ex-cellent melt flow property was observed. The axial ratio (l/d) of (BBA), was calcu1ated tobe 5- 8 whlch is large en0ugh to exhlbit Iiquid crystalline phase. The nematic phase was sta-ble at 230 C. At higher temperature(270C ), the transesterification reaction occurred. Theeutectic temperature of BBA and 4-acetoxybenzoic acid is l75 C。
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第12期2070-2072,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
苯甲酰氧基
苯甲酸
BBA
缔合物
液晶性
4-Benzoyloxybenzoic acid, 4-Acetoxybenzoic acid, 4-(4-Benzoyloxybenzoyloxy)benzoic acid, Dimer, Liquid crystallinity
