影响PE淋膜纸中化学迁移物分配系数的因素  

Factors Affecting Partition Coefficient of Migrants from Paper with PE Coating

作　　者：黄秀玲[1] 王志伟[2] 李明[3] 

机构地区：[1]上海大学包装教研室,上海200072 [2]暨南大学包装工程研究所,广东珠海519070 [3]上海大学机自学院,上海200072

出　　处：《高分子材料科学与工程》2010年第8期23-26,共4页Polymer Materials Science & Engineering

基　　金：北京市重点实验室开放研究课题基金项目(KF201001);中国博士后基金(D10010909051);上海大学创新基金(A10010909904)

摘　　要：利用迁移平衡实验,通过研究不同温度(40℃和60℃)条件下、不同纸塑复合包装材料4015、6515和3312纸中不同的化学物紫外光(UV)固化墨光引发剂1-羟基环己基苯基甲酮(184)和2,2-二甲氧基-苯基甲酮(651),向不同的食品模拟物10%乙醇、95%乙醇和异辛烷的迁移,分析讨论温度、食品模拟物、化学物分子结构和纸张性质对纸塑界面处化学物分配系数的影响。结果发现,温度升高,分配系数减小;化学物分子结构越复杂,分配系数越大;松厚度大、紧度小、孔隙率高的纸张,分配系数小;食品模拟物本身的极性、对包装材料的溶胀性及对化学物的溶解性等对分配系数影响很大。The effect of temperature, food simulants, chemical molecular structure and paper property on chemical partition coefficient at paper and plastic coating interface was discussed by migration experiment under different temperature conditions 40 ℃ and 60 ℃. The paper plastic materials were 4015, 6515 and 3312. The photo-initiators tested were 1-hydroxycyclohexyl-l-phenyl ketone and benzyldimethyl ketal. The food simulants were 10 % ethanol, 95% ethanol and isooctane. The results show that partition coefficient reduces with the temperature increasing, partition coefficient is bigger with more complicated molecular structure, and partition coefficient is small with the paper of less tightness and higher hold ratio. In addition, the effect of polarity, swelling for pacl^aging materials, solution for contaminants of food simulants on partition coefficient is obvious.

关 键 词：分配系数 纸塑包装 迁移 食品模拟物 

分 类 号：TQ021.4[化学工程]