Solution behaviour of cellulose and amylose in iron-sodiumtartrate (FeTNa)
Solution behaviour of cellulose and amylose in iron-sodiumtartrate (FeTNa)
复制标题
纤维素和直链淀粉在酒石酸铁钠 (FeTNa) 中的溶液行为
DOI：
10.1016/s0144-8617(96)00080-x
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发表时间：
1996
影响因子：
11.2
通讯作者：
W. Burchard
中科院分区：
文献类型：
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作者：
B. Seger;T. Aberle;W. Burchard
纤维素和直链淀粉的检测通过静态和动态光散射技术。在发现金属络合物溶剂FeTNa溶解这些葡聚糖之后，进行溶液性质的更详细比较。在非常稀的溶液中，纤维素和直链淀粉表现出半柔性的链行为，没有显著的差异。通过分析外推到零浓度后获得的光散射数据的角度依赖性来确定链刚度参数。然而，由于不同的氢键系统，当增加聚合物浓度超过重叠浓度c时，发生了显着的差异。在直链淀粉的情况下，缠结网络主要由单链组成，单链通过可逆的非共价键暂时固定。纤维素，另一方面，似乎形成一个网络，由流苏胶束聚集体，只有部分纠缠的柔性臂，这些聚集体保持通过H-键。
Cellulose and amylose were examined by means of static and dynamic light scattering techniques. After discovering, that the metal complex solvent FeTNa dissolves these glucanes, a more detailed comparison of the solution properties was performed. In very dilute solutions cellulose and amylose exhibit semiflexible chain behaviour with no striking differences. The chain stiffness parameters were determined by analysing the angular dependence of the light scattering data obtained after extrapolation to zero concentration. Remarkable differences occurred, however, due to different H-bond systems, when increasing the polymer concentration beyond the overlap concentration c∗. In the case of amylose an entanglement network is built up mainly by single chains, which are temporarily fixed by reversible non-covalent bonds. Cellulose, on the other hand, seems to form a network consisting of fringed micellar aggregates, and only partially entangled flexible arms of these aggregates are maintained via H-bonds.
黄濑秀夫：Makromol Chem。
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