Dynamic viscoelasticity has been examined for concentrated solutions of fucoidan from Cladosiphon okamuranus in water and in an ionic liquid 1-butyl-3-methylimidazolium acetate (BmimAc). The existence of the electrostatic interaction between fucoidan chains in the aqueous solutions and its disappearance in the BmimAc solutions have been clearly shown by the difference in the terminal flow behavior between the aqueous and BmimAc solutions. On the other hand, the rubbery plateau indicating the entanglement coupling between fucoidan chains has been observed for both solvents at rather high concentrations. The molecular weight between entanglements (M_e) for fucoidan in the BmimAc solutions has been determined from the plateau modulus at several concentrations and then M_e for fucoidan in the molten state (M_e,melt) has been estimated to be 1.0 × 10⁴ as a measure of the specific chain characteristics of fucoidan.

已经研究了冈比亚克拉多夫藻岩藻聚糖的水溶液和离子液体乙酸1-丁基-3-甲基咪唑鎓乙酸盐（BmimAc）的动态粘弹性。水溶液中岩藻依聚糖链之间的静电相互作用的存在及其在BmimAc溶液中的消失已通过水溶液与BmimAc溶液之间的最终流动行为差异清楚地表明。另一方面，对于两种溶剂，在相当高的浓度下都观察到表明岩藻依聚糖链之间缠结偶联的橡胶平台。从几个浓度下的平稳模量确定了BmimAc溶液中岩藻聚糖的缠结分子量（M _e）。中号_Ë用于在熔融状态下岩藻依聚糖（中号_E，熔化）已被估计为1.0×10 ⁴的岩藻依聚糖的特定链特性的量度。