Lyotropic mesophases of cellulose in the ammonia/ammonium thiocyanate solvent system: Phase relationships
Lyotropic mesophases of cellulose in the ammonia/ammonium thiocyanate solvent system: Phase relationships
复制标题
氨/硫氰酸铵溶剂体系中纤维素的溶致中间相：相关系
DOI：
10.1002/polb.1992.090300401
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
M. H. Theil
中科院分区：
文献类型：
--
作者：
K. Yang;J. Cuculo;M. H. Theil
在25°C下研究了纤维素/NH_3/NH_4SCN体系中酶的形成与体系组成的关系。确定了中间相形成初期和各向异性相形成初期的组成，并绘制了相应的相图。当溶剂组成接近75.5重量%NH 4SCN时，随着纤维素浓度降低，两相间隙变窄。随着溶剂组成的变化，中间相形成的最小纤维素体积分数在0.02至0.045之间。
Mesophase formation of the cellulose/NH3/NH4SCN system has been studied as a function of system composition at 25°C. Compositions for incipience of mesophase formation and for wholly anisotropic phase formation have been determined and relevant phase diagrams constructed. The biphasic gap narrowed when the solvent composition approached 75.5 weight percent NH4SCN and as the cellulose concentration decreased. As solvent composition was changed, the minimum cellulose volume fraction for mesophase formation ranged between 0.02 to 0.045.