酶处理对竹粉/热塑性淀粉复合材料性能的影响  

Effect of Enzyme-Treatment on Properties of Bamboo Flour/Thermoplastic Starch Composites

作　　者：蔡一凡 张桂霞 杨思侠 王海松 吕艳娜 CAI Yi-fan;ZHANG Gui-xia;YANG Si-xia;WANG Hai-song;LÜYan-na(School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China;School of Textile and Material Engineering,Dalian Polytechnic University,Dalian 116034,China;Dalian Construction Peak Printing Industry Co.,Ltd.,Dalian 116085,China)

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034 [2]大连工业大学纺织与材料工程学院,辽宁大连116034 [3]大连建峰印业有限公司,辽宁大连116085

出　　处：《塑料科技》2023年第4期6-10,共5页Plastics Science and Technology

摘　　要：为改善竹粉(BP)表面的反应活性及和热塑性淀粉(TPS)的结合性能,分别使用纤维素酶(Ce)、木聚糖酶(Xy)、半纤维素酶(He)、果胶酶(Pe)对BP进行处理,采用混炼-热压成型工艺制备竹粉/热塑性淀粉(BP/TPS)复合材料,分析不同生物酶处理BP对复合材料结构和性能的影响。结果表明:在温度为50℃、pH值为4.8、预处理时间为5 h条件下,Ce处理BP增强TPS复合材料的拉伸强度、弯曲强度和冲击强度分别提高至5.69 MPa、12.97 MPa和2.29 kJ/m^(2)。酶处理后BP的纤维素特征峰强度增加,暴露更多的羟基,从而增强其与TPS的界面结合。加入Ce处理BP的BP/TPS复合材料热分解温度为248.6℃。土埋降解实验证明复合材料具有良好的生物降解性。In order to improve the surface reactivity of bamboo powder(BP)and its binding properties with thermoplastic starch(TPS),cellulase(Ce),xylanase(Xy),hemicellulase(He)and pectinase(Pe)were used to treat BP,respectively.Bamboo powder/thermoplastic starch(BP/TPS)composites were prepared by mixing-hot pressing process,and the effects of different biological enzymes on the structure and properties of composites were analyzed.The results show that the tensile strength,flexural strength and impact strength of Ce-treated BP reinforced TPS composite is increased to 5.69 MPa,12.97 MPa and 2.29 kJ/m^(2),respectively,under the conditions of temperature of 50℃,pH value of 4.8 and pretreatment time of 5 h.After enzyme treatment,the cellulose characteristic peak intensity of BP is increased,exposing more hydroxyl groups,thereby enhancing its interface binding with TPS.The thermal decomposition temperature of BP/TPS composite treated with Ce is 248.6℃.The soil burial degradation experiment proved that the composite material has good biodegradability.

关 键 词：生物酶处理 竹粉 热塑性淀粉 

分 类 号：TB332[一般工业技术—材料科学与工程]