邹鹏鹏,刘宇琴,陈亚楠,蔡俊.茯苓–聚乙烯醇抑菌膜的制备及生物可降解动力学评价[J].包装工程,2022,43(11):31-37.
ZOU Peng-peng,LIU Yu-qin,CHEN Ya-nan,CAI Jun.Preparation and Biodegradability Evaluation of Poria cocos-Poly (Vinyl Alcohol) Antibacterial Film[J].Packaging Engineering,2022,43(11):31-37. |
| 茯苓–聚乙烯醇抑菌膜的制备及生物可降解动力学评价 |
| Preparation and Biodegradability Evaluation of Poria cocos-Poly (Vinyl Alcohol) Antibacterial Film |
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| DOI：10.19554/j.cnki.1001-3563.2022.11.005 |
| 中文关键词: 茯苓 聚乙烯醇 力学性能 耐水性 生物降解性 |
| 英文关键词: Poria cocos poly (vinyl alcohol ) mechanical property water resistance biodegradable |
| 基金项目:国家自然科学基金(31401807) |
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| 中文摘要: |
| 目的 以可降解材料聚乙烯醇为基材，通过添加茯苓溶液，制备出复合抑菌薄膜，研究不同浓度茯苓对共混膜理化性能和功能性能的影响。方法 采用溶剂浇铸法制备茯苓/PVA共混膜。对共混膜的物理力学性能，以及溶解度、透光率、抑菌性、可降解性进行检测。利用红外光谱、扫描电镜对其结构进行分析表征。结果 茯苓的添加削弱了PVA分子间作用力，显著提高了断裂伸长率，由202.77%增加到398.82%，降低了拉伸强度，并且茯苓与PVA之间形成氢键，减少了水分对薄膜的溶解，薄膜溶解度由100%降到38.21%。随着茯苓质量分数的增加，薄膜的透光率下降，抑菌性得到增强。土壤降解实验表明茯苓/PVA共混膜具有良好的生物降解性。结论 制备的茯苓/PVA共混膜的力学性能和耐水性均得到提高，并且复合膜具有一定的抑菌性和可降解性。文中制备的复合膜为食品包装提供了理想选择。 |
| 英文摘要: |
| Using degradable material poly (vinyl alcoho1) as substrate, the paper aims to prepare the composite antibacterial film by adding Poria cocos solution and study the effects of different concentrations of Poria cocos on the physicochemical and functional properties of the blend film. Poria cocos/PVA blend film was prepared by solvent casting. The physical mechanics, solubility, light transmittance, antibacterial and degradability of the blend films were investigated. Its structure was characterized by Fourier transform infrared spectroscopy, and scanning electron microscope. The addition of Poria cocos weakened the intermolecular force of PVA, significantly increased the elongation at break from 202.77% to 398.82%, reduced the tensile strength, and formed a hydrogen bond between Poria cocos and PVA, reducing the dissolution of water to the film, and the solubility of the film decreased from 100% to 38.21%. With the increase of Poria cocos concentration, the light transmittance of the film decreased and the antibacterial activity was enhanced. Soil degradation test showes that Poria cocos/PVA blend membrane has good biodegradability. The mechanical properties and water resistance of Poria cocos/PVA blend film are improved, and the composite film has certain antibacterial and degradability. The preparation of the composite film provides an ideal choice for food packaging. |
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