Snyder R C, Breder C V
J Assoc Off Anal Chem. 1985 Jul-Aug;68(4):770-5.
A new cell was evaluated for studying the migration of components of plastic food packaging materials into various food simulating solvents. Data obtained using this cell to study the migration of styrene from polystyrene at 40 and 70 degrees C are presented. Food simulating solvents tested were: water; 3% acetic acid; 8, 20, 50, and 100% ethanol; corn oil; HB-307; heptane; hexadecane; and decanol. An iterative Basic computer program is described that fits the migration vs time data obtained to mathematical models, based on Ficks' law, yielding migrant/polymer diffusion coefficients (Dp). Dp values determined for styrene migration from polystyrene at 40 and 70 degrees C were 3 X 10(-13) and 4 X 10(-12) sq. cm/s, respectively.
对一种新型细胞进行了评估，用于研究塑料食品包装材料的成分向各种食品模拟溶剂中的迁移情况。本文展示了使用该细胞在40℃和70℃下研究聚苯乙烯中苯乙烯迁移所获得的数据。所测试的食品模拟溶剂包括：水；3%的乙酸；8%、20%、50%和100%的乙醇；玉米油；HB - 307；庚烷；十六烷；以及癸醇。描述了一个迭代的Basic计算机程序，该程序能将所获得的迁移量与时间数据拟合到基于菲克定律的数学模型中，从而得出迁移物/聚合物扩散系数（Dp）。在40℃和70℃下测定的聚苯乙烯中苯乙烯迁移的Dp值分别为3×10⁻¹³平方厘米/秒和4×10⁻¹²平方厘米/秒。
