化工学报2009，Vol.60Issue(12)：3153-3158,6.
纸塑复合包装材料中化学物迁移的改进预测模型及其通用性
Modified migration model of chemical substances from paper through plastic coating layer and its universality
摘要
Abstract
Paper or recycled paper containing contaminants can be used for food packaging if the food is protected by a functional barrier made of plastic. It is important to research the migration of chemical compounds from these materials. The problem of contaminants transfering through the packaging into food was studied from a theoretical viewpoint. According to the actual system of paper/plastic packaging-compound-food, diffusion equations were built based on one-dimensional Fick diffusion theory. Different diffusion coefficients D_P and D_C of contaminant in paper and plastic, limited paper thickness, and partition coefficient k_(CP) between paper and plastic were considered in the model. Analytical solutions were obtained under specific initial conditions and boundary conditions. In addition, the model universality used for the same bilayer plastic-compound-food system after simplification of the model was discussed. Then analysis was made between the model built and the Laoubi-Vergnaud model. The results showed that the model built can be used not only for the compound migration prediction from paper/plastic material, but also for the compound migration prediction from bilayer plastic material.关键词
迁移/纸塑包装/扩散系数Key words
migration/ paper and plastic packaging/ diffusion coefficient分类
数理科学引用本文复制引用
黄秀玲,王志伟,李明..纸塑复合包装材料中化学物迁移的改进预测模型及其通用性[J].化工学报,2009,60(12):3153-3158,6.基金项目
上海大学创新基金项目. （）
