细菌纤维素/黑索今复合材料的动态酶降解及表征  

Dynamic Enzyme Degradation and Characterization of Bacterial Cellulose/RDX Composite

作　　者：陈彦[1] 杜艳芳[1] 罗庆平[1] 聂福德[2] 裴重华[1] 刘长波[1] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]中国工程物理研究院化工材料研究所,四川绵阳621900

出　　处：《含能材料》2009年第4期408-411,共4页Chinese Journal of Energetic Materials

基　　金：中国工程物理研究院化工材料研究所院外合作基金

摘　　要：采用正交试验设计法研究了细菌纤维素/黑索今(BC/RDX)复合材料动态酶降解及影响因素。对降解前后的材料利用扫描电镜、红外吸收光谱及X射线衍射光谱(XRD)进行了表征。结果发现:影响BC/RDX复合材料酶降解程度的因素大小依复合材料量、纤维素酶浓度和酶解温度顺次降低,但均未达到显著性的影响水平(F<F0.05);对1.00 g BC/RDX复合材料,其优化的动态酶降解工艺为:酶浓度0.7%、温度40℃、pH 5.0、酶解时间25 h。酶解可适度或完全破坏复合材料中细菌纤维素形态和结构,但对BC/RDX复合材料中黑索今的性质无影响。The factors affecting dynamic enzyme degradation of bacterial cellulose/RDX（BC/RDX） composite were investigated and the optimum conditions were obtained by orthogonal experiments. The pre- and post-degradation materials were characterized by SEM,FTIR and XRD. The results show that the degradation of the composite subsequently decreases with the content of the composite,the concentration of enzyme and temperature,but the influences of all the factors are not signifieant（F〈F0.05 ）. For 1.00 g BC/RDX composite,the optimum conditions for dynamic enzyme degradation are 0.7% of enzyme degradation concentration at 40 ℃ and 5.0 of pH value for 25 h. The morphology and structure of BC in the composite are decomposed partly or completely by enzyme,but the degradation of the composite has no any influence on the property of RDX in the composite.

关 键 词：高分子化学 复合材料 细菌纤维素 黑索今 动态酶解 

分 类 号：TQ560.1[化学工程—炸药化工]