文章摘要
王心蕊,马晓彤,韩鑫宇,高学伟,程慧敏,周威.不同水滑石含量聚乳酸抗菌膜的性能研究[J].包装工程,2021,42(11):131-136.
WANG Xin-rui,MA Xiao-tong,HAN Xin-yu,GAO Xue-wei,CHENG Hui-min,ZHOU Wei.Preparation and Properties of Antibacterial ZnAl-PHBA-LDH Polylactic Acid Composite Films[J].Packaging Engineering,2021,42(11):131-136.
不同水滑石含量聚乳酸抗菌膜的性能研究
Preparation and Properties of Antibacterial ZnAl-PHBA-LDH Polylactic Acid Composite Films
投稿时间:2020-08-24  
DOI:10.19554/j.cnki.1001-3563.2021.11.019
中文关键词: 聚乳酸  复合膜  抗菌性  水滑石  食品包装
英文关键词: polylactic acid  composite film  antibacterial property  layered double hydroxides  food packaging
基金项目:北京工商大学校级杰青优青培育项目
作者单位
王心蕊 北京工商大学 化学与材料工程学院北京 100048 
马晓彤 北京工商大学 化学与材料工程学院北京 100048 
韩鑫宇 北京工商大学 化学与材料工程学院北京 100048 
高学伟 北京工商大学 化学与材料工程学院北京 100048 
程慧敏 北京工商大学 化学与材料工程学院北京 100048 
周威 北京工商大学 化学与材料工程学院北京 100048 
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中文摘要:
      目的 制备水滑石/聚乳酸复合抗菌膜,合成一种广谱的抗菌材料,为食品包装领域提供更广阔的应用前景。方法 以锌铝水滑石(ZnAl-LDH)和对羟基苯甲酸(p-hydroxybenzoic,PHBA)为抗菌材料,采用焙烧还原法得到对羟基苯甲酸插层水滑石(ZnAl-PHBA-LDH),通过溶剂挥发法制备不同浓度的ZnAl-PHBA-LDH/聚乳酸抗菌膜(ZPL/PLA),并研究膜的表观形貌、力学性能、抗菌性能和降解性能。结果 ZPL/PLA整体表观良好,随着ZnAl-PHBA-LDH浓度的增加,其拉伸强度和弹性模量也随之提高,断裂伸长率逐渐降低。当ZnAl-PHBA-LDH的质量分数为15%时,ZPL/PLA对金黄色葡萄球菌和白色念珠菌的抑菌圈直径分别为12.35,11.24 mm,具有较强的抗菌作用,并且ZPL/PLA在自然条件下可以正常降解。结论 ZPL/PLA有良好的抑菌性能,是一种新型绿色环保抗菌材料。
英文摘要:
      This study was performed to prepare layered double hydroxides/polylactic acid composite antibacterial film and synthesize a kind of broad-spectrum antibacterial material, so as to provide a broader application prospect in the field of food packaging. ZnAl-LDH and p-hydroxybenzoic (PHBA) acid were used as antibacterial materials, PHBA was inserted into the precursor of ZnAl-LDH by calcination and reduction method, and the obtained ZnAl-PHBA-LDH could be prepared with different concentrations of ZnAl-PHBA-LDH/polylactic acid(ZPL/PLA) by solvent volatile method. The apparent morphology, mechanical properties, antibacterial properties and degradation properties of the film were studied. It showed the overall appearance of ZPL/PLA was good. And as the concentration of ZnAl-PHBA-LDH increased, the tensile strength and Young's modulus increased, and the elongation at break decreased gradually. When the addition amount of ZnAl-PHbA-LDH was 15%, ZPL/PLA had a strong antibacterial effect against Staph aureus and Candida albicans at 12.35 mm and 11.24 mm, respectively, and ZPL/PLA could degrade normally under natural conditions. It is concluded that ZPL / PLA is a new type of environmental protection antibacterial material with good antibacterial properties.
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