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生物质化学工程 ›› 2023, Vol. 57 ›› Issue (3): 8-14.doi: 10.3969/j.issn.1673-5854.2023.03.002

• 研究报告 • 上一篇    下一篇

再生纤维素/聚乙烯醇/壳聚糖/二氧化钛抗菌复合膜的制备及性能

张群利1,3(), 仙鸽1, 崔琳琳2   

  1. 1. 东北林业大学 工程技术学院, 黑龙江 哈尔滨 150040
    2. 哈尔滨商业大学 药学院, 黑龙江 哈尔滨 150076
    3. 森林持续经营与环境微生物工程黑龙江省重点实验室, 黑龙江 哈尔滨 150040
  • 收稿日期:2022-03-24 出版日期:2023-05-30 发布日期:2023-05-31
  • 作者简介:张群利(1978—), 男, 吉林榆树人, 副教授, 博士, 硕士生导师, 主要从事功能性包装材料的研究工作; E-mail: zhangqunli@nefu.edu.cn

Preparation and Performance of Regenerated Cellulose/Polyvinyl Alcohol/Chitosan/TiO2 Antibacterial Composite Film

Qunli ZHANG1,3(), Ge XIAN1, Linlin CUI2   

  1. 1. College of Engineering and Technology, Northeast Forestry University, Harbin 150040, China
    2. College of Pharmacy, Harbin University of Commerce, Harbin 150076, China
    3. Key Laboratory of Sustainable Forest Management & Environmental Microbiology in Heilongjiang Province, Harbin 150040, China
  • Received:2022-03-24 Online:2023-05-30 Published:2023-05-31

摘要:

以微晶纤维素(MCC)和聚乙烯醇(PVA)为原料, 1-丁基-3-甲基咪唑氯盐([Bmim]Cl)为溶剂, 通过MCC溶解再生与PVA共混制备再生纤维素(RGC)/PVA基膜, 并利用壳聚糖(CS)和纳米二氧化钛(TiO2)共混液包覆方法制备RGC/PVA/CS/TiO2抗菌复合膜。通过FT-IR、XRD和SEM对复合膜的形貌和结构进行表征, 并对复合膜的热学、力学、光学、阻隔和抑菌等性能进行测试分析。研究结果表明: 壳聚糖和二氧化钛成功复合于纤维素基膜, RGC/PVA/CS/TiO2复合膜的热分解主要由CS-TiO2包覆层和RGC/PVA基膜的分解构成。与再生纤维素(RGC)膜相比, 当TiO2质量分数为0.2%时, RGC/PVA/CS/TiO2复合膜的拉伸强度提升了39.28%, 断裂伸长率提升了51.66%, 透光率保持在88.72%, 氧气透过率下降了47.77%, 且对大肠杆菌、金黄色葡萄球菌和枯草杆菌具有良好的抑制作用。

关键词: 纤维素, 聚乙烯醇, 壳聚糖, 二氧化钛, 力学性能, 光学性能, 阻隔性能, 抑菌性能

Abstract:

Using microcrystalline cellulose(MCC) and polyvinyl alcohol(PVA) as raw materials, 1-butyl-3-methylimidazole chloride as solvent system, the regenerated cellulose(RGC)/PVA base film was prepared by dissolving and regenerating MCC and blending with PVA. The antibacterial composite film of RGC/PVA/CS/TiO2 was prepared by coating chitosan(CS) and titanium dioxide(TiO2) blend solution. The morphology and structure of the composite film were characterized by fourier transform infrared spectrometer, X-ray diffraction and scanning electron microscope, and the thermology, mechanical, optical, barrier and antibacterial properties were tested and analyzed. The results showed that CS and TiO2 were successfully compounded on the cellulose based film. The thermal decomposition of RGC/PVA/CS/TiO2 composite film was mainly composed of the decomposition of CS-TiO2 coating layer and RGC/PVA base film. Compared with the regenerated cellulose film, when the mass fraction of TiO2 was 0.2%, the tensile strength of the RGC/PVA/CS/TiO2 composite film increased by 39.28%, the elongation at break increased by 51.66%, light transmittance remained at 88.72%, oxygen transmittance decreased by 47.77% and had a good inhibitory effect on Escherichia coli, Staphylococcus aureus and Bacillus subtilis.

Key words: cellulose, polyvinyl alcohol, chitosan, TiO2, mechanical properties, optical properties, barrier properties, bacteriostatic properties

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