苯乙烯单体从基于聚苯乙烯的食品包装纳米复合材料中的迁移：粘土和氧化锌纳米粒子的影响。

Styrene monomer migration from polystyrene based food packaging nanocomposite: Effect of clay and ZnO nanoparticles.

机构信息

Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, P. O. Box 51666-16471, Iran.

Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, P. O. Box 51666-16471, Iran; Department of Food Engineering, Faculty of Engineering, Near East University, P. O. Box 99138, Nicosia, Cyprus, Mersin 10, Turkey.

出版信息

Food Chem Toxicol. 2019 Jul;129:77-86. doi: 10.1016/j.fct.2019.04.019. Epub 2019 Apr 25.

DOI:10.1016/j.fct.2019.04.019

PMID:31028780

Abstract

Inhibition from migration of plastic ingredients such as styrene monomer (SM) is very important in food packaging industry. Styrene monomer is one of the substances which can potentially migrate from polystyrene based packaging. In the present study, organoclay and zinc oxide nanoparticles (ZnO-NPs) were used for decreasing of the SM migration into food simulants (10 and 50% ethanol (v/v)). A used GC-FID method for measuring of the migrated SM showed good precision and accuracy. Maximum reduction of SM migration into 10% and 50% ethanol (24 h storage at 40 °C) were observed in the polystyrene/nanoclay and polystyrene/ZnO samples, respectively. The SM migration data in 50% ethanol at 5 °C followed from Fickian diffusion law and the lowest diffusion coefficient (2.89 × 10 cm/s) was observed in the polystyrene/ZnO/nanoclay samples.

摘要

在食品包装行业，抑制塑料成分（如苯乙烯单体（SM））的迁移非常重要。苯乙烯单体是一种可能从基于聚苯乙烯的包装中迁移出来的物质。在本研究中，有机粘土和氧化锌纳米粒子（ZnO-NPs）被用于减少 SM 向食品模拟物（10%和 50%乙醇（v/v））中的迁移。使用 GC-FID 方法测量迁移的 SM 具有良好的精密度和准确性。在聚苯乙烯/纳米粘土和聚苯乙烯/ZnO 样品中，分别观察到 SM 向 10%和 50%乙醇（40°C 储存 24 小时）中的最大迁移量减少。在 5°C 的 50%乙醇中的 SM 迁移数据遵循菲克扩散定律，在聚苯乙烯/ZnO/纳米粘土样品中观察到最低的扩散系数（2.89×10cm/s）。