生物酶处理对制备秸秆聚乙烯醇复合膜的影响  

Effect of biological enzyme treatment on preparation of straw polyvinyl alcohol composite film

作　　者：赵菲 徐衍鹏 丁烽[1] 李丕武[1] ZHAO Fei;XU Yan-peng;DING Feng;LI Pi-wu(State Key Laboratory of Biobased Material and Green Papermaking,School of Bioengineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China)

机构地区：[1]齐鲁工业大学(山东省科学院)生物工程学院生物基材料与绿色造纸国家重点实验室,山东济南250353

出　　处：《齐鲁工业大学学报》2022年第4期63-68,共6页Journal of Qilu University of Technology

基　　金：国家重点研发计划(2019YFC1905902)。

摘　　要：为了提高秸秆的高值化利用率,对秸秆进行酶改性处理,并与聚乙烯醇进行复配得到秸秆聚乙烯醇复合膜。结果表明,经漆酶木聚糖酶复配处理秸秆得到的复合膜力学强度最高,达到2.9 MPa,断裂伸长率由未改性的12.4%降至7.7%。复合膜的表面疏水性以及结晶度均有一定程度的提高。经过对复合膜官能团的检测,发现复合膜无新增官能团,表明秸秆与聚乙烯醇为物理的氢键连接能力增强。经过酶改性处理后的秸秆聚乙烯醇复合膜在包装领域具有极大的应用价值。In order to improve the utilization rate of straw,the straw was subjected to enzyme modification treatment and compounded with polyvinyl alcohol to obtain a straw polyvinyl alcohol composite film.The results showed that the composite film obtained by treating straw with laccase and xylanase had the highest mechanical strength,reaching 2.9 MPa,and the elongation at break decreased from 12.4%unmodified to 7.7%.The surface hydrophobicity and crystallinity of the composite film have been improved to a certain extent.After testing the functional groups of the composite membrane,it was found that the composite film had no new functional groups,which indicated that the straw and polyvinyl alcohol had an increased ability to connect by physical hydrogen bonds.The straw polyvinyl alcohol composite film after enzyme modification treatment has great application value in the packaging field.

关 键 词：秸秆 聚乙烯醇 生物酶 复合膜 

分 类 号：TB332[一般工业技术—材料科学与工程] X712[环境科学与工程—环境工程]