摘要
羟丙基甲基纤维素溶致液晶的临界浓度与溶剂溶度参数关系的研究董炎明，洪肇昭（厦门大学化学系，厦门，３６１００５）关键词 羟丙基甲基纤维素，溶致性液晶，临界浓度，溶解度参数，链刚性溶致液晶的阀值或临界浓度是在一定温度下恰能形成液晶相的最低浓度，高分子链刚...
Critical concentration of lyotropic liquid crystalline hydroxypropyl methyl cellulose(HPMC) in twelve solvents was determined using both Abbe refractometer and polarized microscopy.is related not only to the acidity of solvents,but also to the solubility parameter δof solvents,There was a general tendency that the more the δof solvents closed to that of HPMC,the lower the was,although the experimental points were somewhat disperse.When the sort of solvents was limited to a simple series such as acetic acid,chloroacetic acid,dichloroacetic acid and trichloroacetic acid,a good linear relation was found between and δ.A lower chain rigidity of HPMC was also evaluated by the persistence length value of Kuhn chain theoretically deduced from critical concentration.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第6期993-995,共3页
Chemical Journal of Chinese Universities
基金
国家教育委员会留学回国人员基金
关键词
溶致性液晶
临界浓度
溶解度
链刚性
HPMC
Hydroxypropyl methyl cellulose,Lyotropic liquid crystalline,Critical concentration,Solubility parameter,Chain rigidity
