电解质
液晶
微晶
纤维素
悬挂(拓扑)
相(物质)
各向同性
化学
化学工程
材料科学
色谱法
结晶学
分析化学(期刊)
有机化学
光学
物理化学
物理
纯数学
同伦
电极
数学
光电子学
工程类
作者
Xue Min Dong,Tsunehisa Kimura,Jean‐François Revol,Derek G. Gray
出处
期刊:Langmuir
[American Chemical Society]
日期:1996-01-01
卷期号:12 (8): 2076-2082
被引量:724
摘要
The formation of ordered phases of acid-hydrolyzed cellulose suspensions was studied as a function of cellulose crystallite concentration and added electrolyte (HCl, NaCl, and KCl) concentrations. A chiral nematic phase formed when the suspension concentration was higher than 5.14 × 10-6 nm-3 in water. For biphasic samples, the cellulose concentrations in both isotropic and anisotropic phases increase with the total suspension concentration and with added electrolyte. The experimental results were compared with the predictions of the theory of Stroobants, Lekkerkerker, and Odijk for the phase separation of charged rods. The suspensions were not stable at electrolyte concentrations sufficiently high to allow complete evaluation of the electrostatic contribution to the interparticle interactions, but the general behavior was in line with theoretical predictions. The chiral nematic pitch of the anisotropic phase decreased with increasing crystallite concentration and with added electrolyte concentration. Apparently, a decrease in double layer thickness increases the chiral interactions between the crystallites.
科研通智能强力驱动
Strongly Powered by AbleSci AI