Study on Migration Model of Antioxidants in Food Contact Polypropylene Plastics
10.11895/j.issn.0253-3820.140659
- VernacularTitle:食品接触聚丙烯塑料中抗氧化剂迁移模型研究
- Author:
Haitao CHI
;
Ying LIU
;
Xia GAO
;
Weili LIU
;
Guanghui HU
;
Yunjun LUO
- Publication Type:Journal Article
- Keywords:
Migration;
Model;
Polypropylene;
Antioxidant
- From:
Chinese Journal of Analytical Chemistry
2015;(3):399-403
- CountryChina
- Language:Chinese
-
Abstract:
A PP plastic film for food packaging (0. 1 mm) was prepared by adding two antioxidants of 2,6-di-tert-butyl-4-methyl-phenol(BHT) and pentaerythritol tetrakis ( 3-( 3, 5-di-tert-butyl-4-hydroxyphenyl ) propionate)(Irganox 1010) with different concentrations into polypropylene (PP) resin, then mixing extrusion granulate by the double screw plastic extruder and hot pressing the film at 190℃. The migration amount of the two antioxidants in food simulants (95% ethanol) was determined by high performance liquid chromatography (HPLC) with diode array detector (PDA) (detection wavelength is 282 nm). The migration of BHT was detected and Irganox 1010 was not detected. Based on the large amount of experimental data, the migration model was fitted by a software, then the migration model of antioxidant BHT was established, the applicability of the two migration model was compared with the actual data. The results showed that the fitting degree ( R2 ) of Weibull model to the actual migration result was greater than 0. 99 and better than Piringer model. It was found that there was a mathematical relationship as τ≈12. 2 ( L2/D) between parameters of Weibull model and Piringer model.
