影响聚丙烯塑料中抗氧剂1076向食品中迁移规律因素研究
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摘要
有害化学物的迁移是食品包装材料污染食品和危害人们身体健康的主要途径之一,研究影响有害物质向食品中迁移规律的因素可有效降低食品包装材料对食品的污染风险。论文研究了含1076的聚丙烯母料的比表面积和模拟液的极性对抗氧剂1076向模拟液中迁移规律的影响,并把Scatchard-Hilderbrand热力学理论模型预测平衡分配系数(D_(r0))与实验值(D_r)进行比较分析,研究结果表明:模拟中1076的浓度(C_r)和浸泡时间(t)符合Ct=a(1-e~(-bt))方程式,且塑料比表面积(S)越大,迁移速率和迁移平衡分配系数(模拟液/塑料)越大,1076向乙醇模拟液中迁移的平衡分配系数(D_r)与比表面积(S)符合方程ln Dr=—3.93+2.21e~(-57.67S),平衡分配系数实验值与SatchardHilderbrand热力学理论模型计算值随模拟液的溶解度参数变化趋势完全一致,实验值与计算值的比值随模拟液与聚丙烯的溶解度参数差值减小而增大,即模拟液的极性越接近聚丙烯,实验值越接近Scatchard-Hilderbrand热力学理论模型平衡分配系数计算值。
The migration of harmful chemicals in plastic packaging material into the food was one of the main way to pollute the food and endanger the health of consumers. The risk of packaging material pollution on food would be minimized by studying on migration regulation of harmful compounds from polypropylene(PP) plastics into food simulant fluid. Specific surface area of polypropylene masterbatch containing antioxidants 1076 and chemical polarity of food simulant fluid influencing antioxidants 1076 migration from polypropylene plastics to food stimulant were investigated in this paper. Then, value(D_(r0)) predicted by Scatchard-Hilderbrand thermodynamic model was contrasted with the experimental one(D_r). Results showed that the relationship between antioxidants 1076 concentration(C_t) and immersion time(t) followed the equation: Ct=a(1—e~(-bt)), the larger the specific surface area was, the larger values of the migration rate and partition coefficient were. Partition coefficient value(D_r) with specific surface area(S) of polypropylene were agree with the equation: ln D_r=—3.93+2.21 e~(—57.67 S), experiment value was consistent with Scatchard-Hilderbrand thermodynamic calculated value in variation trend of partition coefficient with solubility parameter of simulant fluid. The partition coefficient ratio of experimental value to calculated value by Scatchard-Hilderbrand thermodynamic model increased with decreasing of solubility parameter difference value(Δδ) between simulant fluid and PP. Experimental value of partition coefficient was more closed to calculated value by Scatchard-Hilderbrand thermodynamics mode when chemical polarity of food simulant fluid was more closed to PP.
The migration of harmful chemicals in plastic packaging material into the food was one of the main way to pollute the food and endanger the health of consumers. The risk of packaging material pollution on food would be minimized by studying on migration regulation of harmful compounds from polypropylene(PP) plastics into food simulant fluid. Specific surface area of polypropylene masterbatch containing antioxidants 1076 and chemical polarity of food simulant fluid influencing antioxidants 1076 migration from polypropylene plastics to food stimulant were investigated in this paper. Then, value(D_(r0)) predicted by Scatchard-Hilderbrand thermodynamic model was contrasted with the experimental one(D_r). Results showed that the relationship between antioxidants 1076 concentration(C_t) and immersion time(t) followed the equation: Ct=a(1—e~(-bt)), the larger the specific surface area was, the larger values of the migration rate and partition coefficient were. Partition coefficient value(D_r) with specific surface area(S) of polypropylene were agree with the equation: ln D_r=—3.93+2.21 e~(—57.67 S), experiment value was consistent with Scatchard-Hilderbrand thermodynamic calculated value in variation trend of partition coefficient with solubility parameter of simulant fluid. The partition coefficient ratio of experimental value to calculated value by Scatchard-Hilderbrand thermodynamic model increased with decreasing of solubility parameter difference value(Δδ) between simulant fluid and PP. Experimental value of partition coefficient was more closed to calculated value by Scatchard-Hilderbrand thermodynamics mode when chemical polarity of food simulant fluid was more closed to PP.
引文
[1]庾利萍.食品塑料包装的现状及发展趋势[J].塑料包装,2005,15(03):1-8
[2]秦蓓.塑料食品包装材料安全性研究现状[J].包装工程,2011,32(19):33-35
[3]王成涛.塑料食品包装材料的化学物迁移与危害[J].北京工商大学学报(自然科学版),2011,29(05):8-9
[4]汪仕韬,邵卫卫,薛娜娜,等.食品塑料包装材料危害物安全风险分析[J].塑料包装,2015,25(6):41-43
[5]黎盛,徐丹,徐毅,等.塑料食品包装安全性分析[J].食品工业科技,2011,32(12):391-393
[6]谢鸽成.欧洲食品包装材料法规目前的动态[J].塑料助剂,2014,(04):11-13
[7]池海涛,刘颖,高峡,等.食品接触聚丙烯塑料中抗氧化剂迁移模型研究[J].分析化学,2015,43(06):399-403
[8]郝倩,苏荣欣,齐崴,等.食品包装材料中有害物质迁移行为的研究进展[J].食品科学,2014,35(21):279-286
[9]薛山,赵国华.食品包装材料中有害物质迁移的研究进展[J].食品工业科技,2012,33(2):404-409
[10]Yasar K E,Furkan A.Migration of bis-phenol-ainto the natural spring water packaged in polycarbonate carboys[J].International Journal of Applied Science and Technology,2012,2(1):152-156
[11]林勤保,李小梅,宋欢,等.聚乙烯塑料包装材料中4种抗氧化剂向脂肪食品模拟物迁移的研究[J].分析科学学报,2010,26(06):631-635
[12]池海涛.食品包装材料中添加剂迁移规律及模型研究[D].北京:北京理工大学,2015
[13]肖少军,张钦发,向红,等.热力学数学模型对塑料中化学物向食品模拟液中迁移平衡时分配系数的预测研究[J].食品安全质量检测学报,2014,6(5):1747-1750
[14]张艳,张钦发,肖少军,等.影响Scathard-Hildebrand统计热力学理论预测PVC中增塑剂迁移平衡分配系数的因素[J].食品工业科技,2016,37(17):138-141
[15]李敏雯,肖少军,张钦发.热力学模型在塑料印刷层中有害物质迁移分配系数预测的应用研究[J].包装工程,2016,37(5):121-125
[16]李以圭.金属溶剂萃取热力学[M].北京:清华大学出版社,1988:145-152
[2]秦蓓.塑料食品包装材料安全性研究现状[J].包装工程,2011,32(19):33-35
[3]王成涛.塑料食品包装材料的化学物迁移与危害[J].北京工商大学学报(自然科学版),2011,29(05):8-9
[4]汪仕韬,邵卫卫,薛娜娜,等.食品塑料包装材料危害物安全风险分析[J].塑料包装,2015,25(6):41-43
[5]黎盛,徐丹,徐毅,等.塑料食品包装安全性分析[J].食品工业科技,2011,32(12):391-393
[6]谢鸽成.欧洲食品包装材料法规目前的动态[J].塑料助剂,2014,(04):11-13
[7]池海涛,刘颖,高峡,等.食品接触聚丙烯塑料中抗氧化剂迁移模型研究[J].分析化学,2015,43(06):399-403
[8]郝倩,苏荣欣,齐崴,等.食品包装材料中有害物质迁移行为的研究进展[J].食品科学,2014,35(21):279-286
[9]薛山,赵国华.食品包装材料中有害物质迁移的研究进展[J].食品工业科技,2012,33(2):404-409
[10]Yasar K E,Furkan A.Migration of bis-phenol-ainto the natural spring water packaged in polycarbonate carboys[J].International Journal of Applied Science and Technology,2012,2(1):152-156
[11]林勤保,李小梅,宋欢,等.聚乙烯塑料包装材料中4种抗氧化剂向脂肪食品模拟物迁移的研究[J].分析科学学报,2010,26(06):631-635
[12]池海涛.食品包装材料中添加剂迁移规律及模型研究[D].北京:北京理工大学,2015
[13]肖少军,张钦发,向红,等.热力学数学模型对塑料中化学物向食品模拟液中迁移平衡时分配系数的预测研究[J].食品安全质量检测学报,2014,6(5):1747-1750
[14]张艳,张钦发,肖少军,等.影响Scathard-Hildebrand统计热力学理论预测PVC中增塑剂迁移平衡分配系数的因素[J].食品工业科技,2016,37(17):138-141
[15]李敏雯,肖少军,张钦发.热力学模型在塑料印刷层中有害物质迁移分配系数预测的应用研究[J].包装工程,2016,37(5):121-125
[16]李以圭.金属溶剂萃取热力学[M].北京:清华大学出版社,1988:145-152