Production of nanocomposite films based on low density polyethylene/surface activated nanoperlite for modified atmosphere packaging applications

Q2 Materials Science

Polymers from Renewable Resources Pub Date : 2024-07-23 DOI:10.1177/20412479241266958

R. Sahraeian, S. Paran, Masoud Esfandeh, G. Naderi

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Abstract

The modified atmosphere packaging films based on polyethylene nanocomposites reinforced with perlite nanoparticles were prepared using a blow molding machine. The perlite particles were first reduced to nano dimensions using an abrasive mill, then the porosity of nanoperlite was increased to improve their efficiency in absorbing ethylene gas. For this purpose, 6 normal sodium hydroxide solution at 50°C temperature was used. Finally, perlite nanoparticles were modified by polymethyl hydrogen siloxane silane compound. In each of the stages of grinding and modifying the perlite surface, the necessary tests including dynamic light diffraction test, nitrogen absorption test and ethylene gas absorption test were performed using gas chromatography method. The results showed that the size of perlite particles was reduced to 500 nm by using an abrasive mill, and the surface modification process increased the specific surface area of perlite by 10 times. Based on this, the amount of ethylene gas absorption in perlite nanoparticles with modified surface increased up to 3 times compared to normal perlite. The results of the gas chromatography test showed that the nanocomposite film based on polyethylene reinforced with 6% by weight of modified perlite nanoparticles has several times the efficiency in absorbing ethylene gas compared to the potassium permanganate sachets The results of the mechanical properties tests of nanocomposite film in comparison with pure polyethylene film showed that nanocomposite film has higher properties than pure polyethylene. The results of shelf-life tests of green tomatoes packed in nanocomposite film based on polyethylene reinforced with modified nanoperlite showed that green tomatoes can be stored for two months using the prepared modified atmosphere packaging.

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生产基于低密度聚乙烯/表面活性纳米铂的纳米复合薄膜，用于改良气氛包装应用

使用吹塑机制备了以纳米珍珠岩颗粒增强的聚乙烯纳米复合材料为基础的改良气氛包装膜。首先使用研磨机将珍珠岩颗粒减小到纳米尺寸，然后增加纳米珍珠岩的孔隙率，以提高其吸收乙烯气体的效率。为此，使用了温度为 50°C 的 6 普通氢氧化钠溶液。最后，用聚甲基氢硅氧烷硅烷化合物对纳米珍珠岩颗粒进行改性。在研磨和改性珍珠岩表面的各个阶段，都使用气相色谱法进行了必要的测试，包括动态光衍射测试、氮气吸收测试和乙烯气体吸收测试。结果表明，使用研磨机将珍珠岩颗粒的尺寸减小到 500 nm，表面改性过程使珍珠岩的比表面积增加了 10 倍。在此基础上，表面改性的纳米珍珠岩吸收乙烯气体的量比普通珍珠岩增加了 3 倍。气相色谱法测试结果表明，以聚乙烯为基材，添加 6% （重量百分比）改性珍珠岩纳米颗粒的纳米复合薄膜吸收乙烯气体的效率是高锰酸钾小袋的数倍。对使用纳米复合膜包装的绿色西红柿的货架期测试结果表明，使用制备的改良气氛包装，绿色西红柿可贮藏两个月。

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来源期刊

Polymers from Renewable Resources Materials Science-Polymers and Plastics

CiteScore

3.50

自引率

0.00%

发文量

期刊介绍： Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.