摘要
研究了一种新的甲壳素类高分子液晶－丙酰化甲壳素的液晶性．结果表明这种高分子在二氯乙酸溶液中的织构是带有指纹状微区的交替偏振场织构，可见存在胆甾相．在剪切时能形成典型的条带织构．分子量（从０．６７×１０６到３．４９×１０６）对临界浓度（均为２０ｗｔ％左右）和形成条带织构的最低浓度（均为３４ｗｔ％左右）的影响都不显著．这一结果与取代后分子链刚性较小有关．
Liquid crystalline behavior of a novel chitin based liquid crystalline polymer propionyl chitin was studied. The texture of this polymer in DCA solution was alternatively polarized field with fingerprint domain. Typical banded texture appeared after being sheared. The influences of molecular weight (range from 0.67×10 6 to 3.49×10 6) of propionyl chitin on critical concentration to form mesophase (about 20 wt%) and the minimum concentration to form banded texture (about 34 wt%) were not evident. These results may be explained by less rigidity of the molecular chain after substitution.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
1999年第2期252-256,共5页
Journal of Xiamen University：Natural Science
基金
中国科学院纤维素化学开放研究实验室资助
关键词
甲壳素
丙酰化甲壳素
溶致液晶
分子量
液晶
Chitin,Derivatives,Propionyl chitin,Lyotropic liquid crystal,Cholesteic phase,Molecular weight,Banded texture
