Effect of migrant size on diffusion in dry and hydrated polyamide 6

Hatzigrigoriou, NB; Papaspyrides, CD; Joly, C; Dole, P

dc.contributor.author	Hatzigrigoriou, NB	en
dc.contributor.author	Papaspyrides, CD	en
dc.contributor.author	Joly, C	en
dc.contributor.author	Dole, P	en
dc.date.accessioned	2014-03-01T01:33:18Z
dc.date.available	2014-03-01T01:33:18Z
dc.date.issued	2010	en
dc.identifier.issn	0021-8561	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20368
dc.subject	Diffusion coefficient	en
dc.subject	dry and hydrated polyamide 6	en
dc.subject	fluorescent recovery after photobleaching	en
dc.subject	molar volume	en
dc.subject	molecular weight	en
dc.subject	polymer matrix mobility	en
dc.subject.classification	Agriculture, Multidisciplinary	en
dc.subject.classification	Chemistry, Applied	en
dc.subject.classification	Food Science & Technology	en
dc.subject.other	Chemical functionality	en
dc.subject.other	Diffusion Coefficients	en
dc.subject.other	Diffusion process	en
dc.subject.other	dry and hydrated polyamide 6	en
dc.subject.other	Experimental data	en
dc.subject.other	Fluorescence recovery after photobleaching	en
dc.subject.other	Fluorescent probes	en
dc.subject.other	fluorescent recovery after photobleaching	en
dc.subject.other	Food contact material	en
dc.subject.other	matrix	en
dc.subject.other	molar volume	en
dc.subject.other	Polyamide 6	en
dc.subject.other	Safety authority	en
dc.subject.other	Semi-empirical approach	en
dc.subject.other	Fluorescence	en
dc.subject.other	Health	en
dc.subject.other	Hydration	en
dc.subject.other	Mathematical models	en
dc.subject.other	Matrix algebra	en
dc.subject.other	Molecular weight	en
dc.subject.other	Photobleaching	en
dc.subject.other	Polymer matrix	en
dc.subject.other	Recovery	en
dc.subject.other	Volume measurement	en
dc.subject.other	Diffusion	en
dc.subject.other	caprolactam	en
dc.subject.other	drug derivative	en
dc.subject.other	policapram	en
dc.subject.other	polymer	en
dc.subject.other	article	en
dc.subject.other	chemistry	en
dc.subject.other	diffusion	en
dc.subject.other	food packaging	en
dc.subject.other	instrumentation	en
dc.subject.other	kinetics	en
dc.subject.other	particle size	en
dc.subject.other	theoretical model	en
dc.subject.other	Caprolactam	en
dc.subject.other	Diffusion	en
dc.subject.other	Food Packaging	en
dc.subject.other	Kinetics	en
dc.subject.other	Models, Theoretical	en
dc.subject.other	Particle Size	en
dc.subject.other	Polymers	en
dc.title	Effect of migrant size on diffusion in dry and hydrated polyamide 6	en
heal.type	journalArticle	en
heal.identifier.primary	10.1021/jf100928s	en
heal.identifier.secondary	http://dx.doi.org/10.1021/jf100928s	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Food safety authorities have already allowed the use of mathematical models to predict diffusion from plastic food contact materials. These models use the molecular weight of the migrant as a cornerstone parameter that describes the contribution of the migrant to the diffusion process. In this work, the dependence of the diffusion coefficient on the migrant size was examined through fluorescence recovery after photobleaching (FRAP). A model migrant series of fluorescent probes was used, covering a wide molecular weight range. The advantage and originality of the tested migrant series are associated with the fact that the same shape and chemical functionality are maintained regardless of the molecular weight of the migrants. In this way the dependence of the acquired data on parameters other than size is excluded. The same experiments were carried out in dry and hydrated polyamide 6 to evaluate the effect of polymer matrix mobility in the ""diffusion-migrant size"" relationship. The experimental data were compared to well-known mathematical or semiempirical approaches, verifying that there is a relationship between the diffusion coefficient and the size of the migrant. However, it is demonstrated that this relationship is also affected by the mobility of the polymer matrix, becoming more pronounced as the mobility of the matrix decreases. © 2010 American Chemical Society.	en
heal.publisher	AMER CHEMICAL SOC	en
heal.journalName	Journal of Agricultural and Food Chemistry	en
dc.identifier.doi	10.1021/jf100928s	en
dc.identifier.isi	ISI:000280471800028	en
dc.identifier.volume	58	en
dc.identifier.issue	15	en
dc.identifier.spage	8667	en
dc.identifier.epage	8673	en