本文用粘度法和高效液相色谱技术跟踪H.E-聚阴离子纤维素/酶体系的酶解降解过程。应用弱键理论处理酶解过程动力学,发现酶解速率常数K与取代度(D.S.)之间关系的极限曲线及其实验方程式[K=4.67×10~(-5)(D.S.)~(-3.05)]是描述取代基沿大分子链分布的化学微结构均匀性的很好形式。同时,计算了酶解产物的链参数。最后,对H.E-聚阴离子和其他CMC-Na的化学微结构均匀性作了讨论。 In this paper, the enzymatic degradation process of H.E-polyanionic cellulose / enzyme system was followed with viscometry and high performance liquid chromatography. The weak curve theory was used to deal with the kinetics of the hydrolysis process. The limit curve of the relationship between the hydrolysis rate constant K and the degree of substitution (DS) and its experimental equation [K = 4.67 × 10 -5 (DS) ~ (- 3.05)] is a good way to describe the chemical microstructure uniformity of the distribution of the substituents along the macromolecular chains. At the same time, the chain parameters of the hydrolyzate were calculated. Finally, the chemical microstructure uniformity of H.E-polyanions and other CMC-Na are discussed.