一点法测定羧甲基壳聚糖的特性粘度

Determining the intrinsic viscosity of carboxymethy chitosan by one-point method

通过对比利用常规粘度法和常用测定高聚物特性粘度的“一点法”经验公式所得的羧甲基壳聚糖的特性粘度值 ,找出了适合于快速测定羧甲基壳聚糖特性粘度的“一点法”计算公式为 [η]=4ηsp1.0 2 lnηr/ C1.0 1(3ηsp+ lnηr)。

The intrinsic viscosity of carboxymethyl chitosan calculated according to the one point method empirical equations which are used to rapidly determine the intrinsic viscosity of the synthetic polymeric compounds,were compared with the correspending ones determined by the routine viscosity method.The results showed that the one point empirical equation [ η ] =4 η sp 1.02 ln η r/C 1.01 (3 η sp +lnη r) is suitable for rapidly determining the intrinsic viscosity of carboxymethyl chitosan.