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首页> 外文期刊>Journal of Applied Polymer Science >Enzymatic degradation of thermoresponsive poly(N-isopropylacrylamide) grafted to carboxymethylcellulose copolymers
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Enzymatic degradation of thermoresponsive poly(N-isopropylacrylamide) grafted to carboxymethylcellulose copolymers

机译：接枝到羧甲基纤维素共聚物上的热敏性聚（N-异丙基丙烯酰胺）的酶促降解

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The enzymatic degradation of poly(N-isopropyl acrylamide) (PNIPAM) grafted to carboxymethylcellulose (CMC) copolymers with a cellulasic preparation (Trichoderma viride) was studied. The enzymatic activity of the cellulasic preparation against CMC and the grafted copolymers was determined by the Petterson-Porath method, while their reduced viscosity variation in the presence of the same preparation was also followed. It has been shown that the enzymatic degradation behavior depends on the copolymer composition and the reaction temperature. Reducingsugars analysis showed that the experimental values for the grafted copolymers were higher than the calculated ones. At 50degreesC, the enzymatic reaction is completed in about 20 min for the copolymers, whereas for CMC it takes more than 40 min. It can be concluded that their enzymatic degradation is facilitated by the presence of the PNIPAM grafts. (C) 2002 Wiley Periodicals, Inc. [References: 25]
机译：研究了用纤维素制品（Trichoderma viride）接枝到羧甲基纤维素（CMC）共聚物上的聚（N-异丙基丙烯酰胺）（PNIPAM）的酶促降解。通过Petterson-Porath方法测定纤维素制剂对CMC和接枝共聚物的酶活性，同时还跟踪它们在相同制剂存在下的降低的粘度变化。已经表明，酶促降解行为取决于共聚物的组成和反应温度。还原糖分析表明，接枝共聚物的实验值高于计算值。在50°C下，共聚物的酶促反应在大约20分钟内完成，而CMC则需要40多分钟。可以得出结论，PNIPAM移植物的存在促进了它们的酶促降解。 （C）2002 Wiley Periodicals，Inc. [参考：25]

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