Cholesteric order in aqueous solutions of the polysaccharide Xanthan
Cholesteric order in aqueous solutions of the polysaccharide Xanthan
复制标题
多糖黄原胶水溶液中的胆甾醇顺序
DOI：
10.1007/bf00255106
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发表时间：
1981
期刊：
影响因子：
3.2
通讯作者：
M. Rinaudo
中科院分区：
文献类型：
--
作者：
G. Maret;M. Milas;M. Rinaudo
双折射、旋光度和激光衍射的测量表明，浓度为7.5%(VOL/VOL)的聚电解质黄原胶水溶液具有与胆甾型液晶非常相似的长程有序性。胆甾体螺旋是左旋的，意味着单个分子的棒状构象和右旋螺旋性。胆甾相从浓度较低的各向同性溶液中分离出来，形成球晶。
Measurements of birefringence, optical rotation and laser light diffraction show that aqueous solutions of the polyelectrolytic polysaccharide Xanthan at a concentration of 7.5 % (vol/vol) have long range order very similar to cholesteric liquid crystals. The cholesteric screw is left handed implying a rod-like conformation and right handed helicity of individual molecules. The cholesteric phase separates from a less concentrated isotropic solution and spherolites are formed.