摘要
用DSC技术分别测定了二醋酸纤维素在不同浓度的三氟醋酸和二氯醋酸溶液中形成的溶致液晶的临界温度，并绘制了相图．对于三氟醋酸体系，相图曲线在溶液浓度32％时临界温度趋于极大值；而对二氯醋酸体系,相图曲线直至浓度50％时仍呈线性．
Critical temperatures of lyotropic liquid crystalline formed in cellulose diacetate(CDA hereafter)/trifluoroacetic acid and CDA/dichloroacetic acid solutions of different concentration were determined respectively using DSC technique. Phase diagrams were shown.In CDA/trifluoroacetic acid system, critical temperature reached maximum value when concentration was 32%;but in CDA/dichloroacetic acid system, the phase diagram was linearup to 50% concentration.
出处
《湘潭大学自然科学学报》
CAS
CSCD
1997年第4期45-47,58,共4页
Natural Science Journal of Xiangtan University
基金
中国科学院纤维素化学开放研究实验室资助
关键词
DSC
二醋酸纤维素
溶酸液晶
临界温度
液晶
DSC, cellulose diacetate, lyotropic liquid crystalline, critical temperature,phase diagram
