Cholesteric liquid crystalline phases based on (acetoxypropyl)cellulose
Cholesteric liquid crystalline phases based on (acetoxypropyl)cellulose
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基于（乙酰氧基丙基）纤维素的胆甾型液晶相
DOI：
10.1021/ma50004a049
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发表时间：
1981
期刊：
影响因子：
5.5
通讯作者：
D. Gray
中科院分区：
文献类型：
--
作者：
S. Tseng;A. Valente;D. Gray
通过（羟丙基）纤维素的乙酰化制备（乙酰氧基丙基）纤维素（Mw= 140000）。该聚合物形成热致液晶相，其在85-125 ℃的温度范围内反射可见光。含有大于50重量%聚合物的（乙酰氧基丙基）纤维素在丙酮中的溶液形成液晶中间相。测量了中间相的双折射率、反射率和旋光色散随聚合物浓度的变化;结果证实了中间相的非线性性质。
(Acetoxypropyl) cellulose (Mw= 140000) was prepared by acetylation of (hydroxypropyl) cellulose. The polymer formed a thermotropic cholesteric phase which reflected visible light in the 85-125 C temperature range. Solutions of (acetoxypropyl) cellulose in acetone containing more than 50 wt% polymer formed a liquid crystalline mesophase. The mesophase birefringence, reflectance, and optical rotatory dispersion were measured as a function of polymer concentration; the results confirmed the cholesteric nature of the mesophase.