Riquet A M, Bose V, Feigenbaum A
INRA-SquAlE, Jouy en Josas, France.
Food Addit Contam. 2001 Feb;18(2):165-76. doi: 10.1080/02652030010008797.
To investigate the use of solvent mixtures as test media replacing olive oil in migration tests, the interaction of polystyrene with mixtures composed of various amounts of tert.butyl acetate (mimicking the ester functions of oil) and of a low molecular weight alcohol (methanol, ethanol and isopropanol as inert co-solvent) was studied, using FTIR. Isopropanol, which has a lesser tendency to form hydrogen bonds in the plastic, can be used as main component of alternative fatty test media, its aggressiveness to polystyrene being tailored by adjusting the concentration of tert.butyl acetate. Concentrations below 20% seem useful on the basis of the mechanism of displacement of the alcohols.
为了研究在迁移试验中使用混合溶剂作为测试介质替代橄榄油的情况，利用傅里叶变换红外光谱法（FTIR）研究了聚苯乙烯与由不同量的乙酸叔丁酯（模拟油的酯功能）和低分子量醇（甲醇、乙醇和异丙醇作为惰性共溶剂）组成的混合物之间的相互作用。异丙醇在塑料中形成氢键的倾向较小，可作为替代脂肪测试介质的主要成分，通过调整乙酸叔丁酯的浓度来调节其对聚苯乙烯的侵蚀性。基于醇类的置换机制来看，浓度低于20%似乎是有用的。
