Analysis of Talc Migration in Polylactic Acid Cup Cover for Food Contact

doi:10.19491/j.issn.1001-9278.2021.07.016

Abstract

Abstract:

In this study， a national standard method was used to measure the total migration of a food?contacted polylactic acid cup cover. The migration of talc powders in a food simulation solution was analyzed using atomic absorption spectrometry， and the talc powders in the evaporation residue of the migration was qualitatively identified using fourier transform infrared spectroscopy. The safety of talc powders in food?contacted materials was discussed. The results indicated that the method used in this work was accurate， rapid and simple， and it could be used for the rapid identification and safety evaluation of talc in food?contacted materials. Talc is not easily migrated into the food simulation solution. There is a low risk for talc to migrated to food when PLA products are contacted with foods.

Key words: polylactic acid, talcum powder, migration, food contact, safety evaluation

CLC Number:

TQ321

CAI Xiaofang, YUAN Hang, DIAO Xiaoqian, LI Ziyi, FENG Di. Analysis of Talc Migration in Polylactic Acid Cup Cover for Food Contact[J]. China Plastics, 2021, 35(7): 91-96.

Figures/Tables 5

References 26

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样品测定值平均值/mg·L^-1	加标量/mg·L^-1	加标样品测定值/mg·L^-1	平均值/mg·L^-1	回收率/%	平均回收率/%	相对标准偏差/%
ND^a	0.1	0.106 9	0.109 2	109	108	1.42
		0.110 0
		0.110 8
	0.2	0.219 2	0.215 8	108
		0.211 6
		0.216 7
	0.3	0.320 2	0.318 4	106
		0.316 3
		0.318 7

样品测定值平均值/mg·L^-1	加标量/mg·L^-1	加标样品测定值/mg·L^-1	平均值/mg·L^-1	回收率/%	平均回收率/%	相对标准偏差/%
ND^a	0.1	0.106 9	0.109 2	109	108	1.42
		0.110 0
		0.110 8
	0.2	0.219 2	0.215 8	108
		0.211 6
		0.216 7
	0.3	0.320 2	0.318 4	106
		0.316 3
		0.318 7

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