Abstract: The viscosity stability and enzymatic hydrolysis property of both the antienzyme and non-antienzyme type hydroxyethyl cellulase( HEC) products in three different solution(e.g. aqueous solution, aqueous solution with antiseptic and aqueous solution with cellulase) were investigated. The results showed that no addition of antiseptic agent could enable the antienzyme type HEC solution to keep a stable viscosity for a long time, whereas, the non-antienzyme type HEC solution gave a noticeable shortened time for viscosity stability.The addition of antiseptic agent enabled the antienzyme and non-antienzyme type HEC solution to exhibit good viscosity stability. With the addition of cellulase, the viscosity of the antienzyme type HEC solution decreased, and the viscosity of the non-antienzyme type HEC solution decreased much more with the reducing sugar occurred simultaneously. The test method developed in this study not only could be used in HEC production and application, but also could provide reference to develop the industrial or national standard.

Key words: hydroxyethyl cellulose, viscosity stability, resistant enzymatic hydrolysis property

摘要： 在不同的羟乙基纤维素（HEC）水溶液样品中分别添加防腐杀菌剂和纤维素酶，考察存放不同时间后 HEC 水溶液的黏度稳定性和酶解稳定性。 结果表明：在不添加防腐杀菌剂的情况下，防酶型 HEC 水溶液的黏度可较长时间保持稳定，而非防酶型的 HEC 水溶液的黏度随存放时间的延长出现明显下降；添加防腐杀菌剂后，防酶型和非防酶型 HEC 水溶液均有良好的黏度稳定性。 添加纤维素酶后，防酶和非防酶型的 HEC 水溶液均会发生降解以致其黏度下降，其中非防酶型的黏度下降最快，并明显伴有还原糖的产生。 研究结果可为 HEC 生产与应用企业测试产品性能与质量、制定水性涂料用 HEC 的行标或国标提供参考。

关键词: 羟乙基纤维素, 黏度稳定性, 抗酶解性能