陈娟,张德权,文向圆,李欣,杨伟,范文春,刘金花,侯成立.纳米二氧化钛抗菌热收缩膜的制备与性能研究[J].包装工程,2023,44(7):1-9.
CHEN Juan,ZHANG De-quan,WEN Xiang-yuan,LI Xin,YANG Wei,FAN Wen-chun,LIU Jin-hua,HOU Cheng-li.Preparation and Properties of Nano Titanium Dioxide Antibacterial Heat Shrinkage Film[J].Packaging Engineering,2023,44(7):1-9. |
| 纳米二氧化钛抗菌热收缩膜的制备与性能研究 |
| Preparation and Properties of Nano Titanium Dioxide Antibacterial Heat Shrinkage Film |
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| DOI：10.19554/j.cnki.1001-3563.2023.07.001 |
| 中文关键词: 纳米TiO2 热收缩膜 力学性能 抗菌性能 |
| 英文关键词: nano-TiO2 heat shrinkage film mechanical properties antibacterial performance |
| 基金项目:“十四五”重点研发计划(2021YFD2100802);云南省重大科技专项计划(202102AE090039) |
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| 中文摘要: |
| 目的 比较不同质量分数二氧化钛(TiO2)对抗菌热收缩膜的物理性能和抗菌效果。方法 以线性低密度聚乙烯、乙烯–醋酸乙烯酯共聚物、聚偏二氯乙烯为原料，采用共挤压法制备纳米TiO2质量分数分别为0%、2%、3%、4%的抗菌热收缩膜，并对其性能进行研究。结果 纳米TiO2颗粒在抗菌热收缩膜表面均匀分布，添加纳米TiO2对热收缩膜的厚度和不透明度没有显著影响(P>0.05)。随着纳米TiO2添加量的增加，纳米TiO2抗菌热收缩膜的断裂伸长率和拉伸强度呈先升高后下降趋势。当纳米TiO2质量分数为3%时，断裂伸长率和拉伸强度分别达到最大值238.48%和55.64 MPa。添加纳米TiO2对热收缩膜的氧气透过量和水蒸气透过量没有影响(P>0.05)。纳米TiO2抗菌热收缩膜对假单胞菌MN10、肉杆菌VE51、乳球菌VE58和乳杆菌VMR17表现出优异的抗菌性能，随着TiO2添加量的增加，纳米TiO2抗菌热收缩膜的抗菌效果越好，当纳米TiO2质量分数为3%时，纳米TiO2抗菌热收缩膜对4种株菌的抑菌效果分别达到了93.35%、98.46%、97.14%和100%。结论 纳米TiO2抗菌热收缩膜具有较好的物理性能和抗菌效果，具有应用于生鲜肉包装的潜力。 |
| 英文摘要: |
| The work aims to compare the physical properties and antibacterial effects of different mass fractions of titanium dioxide (TiO2) on antibacterial heat shrinkage film. With linear low density polyethylene, ethylene-vinyl acetate copolymer and polyvinylidene chloride as raw materials, the antibacterial heat shrinkage films with 0 %, 2 %, 3 % and 4 % nano-TiO2 were prepared by co-extrusion method and then their properties were studied. Nano-TiO2 particles were evenly distributed on the surface of the antibacterial heat shrinkage film, and the addition of nano-TiO2 had no significant effect on the thickness and opacity of the heat shrinkage film (P > 0.05). The elongation at break and tensile strength of the heat shrinkage film increased with the increasing addition amount of nano-TiO2, and then decreased, which could reach the maximum value of 238.48% and 55.64 MPa respectively when the mass fraction nano-TiO2 was 3%. Besides, the addition of nano-TiO2 had no effect on the oxygen transmission and water vapor transmission of the heat shrinkage film (P>0.05). The nano-TiO2 antibacterial heat shrinkage film showed excellent antibacterial performance against Pseudomonas azotoformans MN10, Latilactobacillus sakei VE51, Carnobacterium maltaromaticum VE58 and Lactococcus piscium VMR17. The antibacterial effect of the heat shrinkage film became better with the increase of TiO2 addition amount. When the mass fraction of nano-TiO2 was 3%, the antibacterial effect of nano-TiO2 antibacterial heat shrinkage film reached 93.35%, 98.46%, 97.14% and 100% against the four strains of bacteria, respectively. Therefore, the nano-TiO2 antibacterial heat shrinkage film has good physical properties and antibacterial effects and has the potential to be applied to raw meat packaging. |
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