Diffusion studies through fluorescence recovery after photobleaching in hydrated polyamides

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

dc.contributor.author	Hatzigrigoriou, NB	en
dc.contributor.author	Papaspyrides, CD	en
dc.contributor.author	Joly, C	en
dc.contributor.author	Pinte, J	en
dc.contributor.author	Dole, P	en
dc.date.accessioned	2014-03-01T01:35:31Z
dc.date.available	2014-03-01T01:35:31Z
dc.date.issued	2011	en
dc.identifier.issn	0032-3888	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21092
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Diffusion Coefficients	en
dc.subject.other	Diffusion studies	en
dc.subject.other	Diffusivities	en
dc.subject.other	Effect of hydrogen	en
dc.subject.other	Fluorescence recovery after photobleaching	en
dc.subject.other	Fluorescent probes	en
dc.subject.other	Hydrogen bondings	en
dc.subject.other	matrix	en
dc.subject.other	Order of magnitude	en
dc.subject.other	Relative humidities	en
dc.subject.other	Activation energy	en
dc.subject.other	Amides	en
dc.subject.other	Atmospheric humidity	en
dc.subject.other	Diffusion	en
dc.subject.other	Fluorescence	en
dc.subject.other	Hydration	en
dc.subject.other	Hydrogen	en
dc.subject.other	Molecules	en
dc.subject.other	Photobleaching	en
dc.subject.other	Polyamides	en
dc.subject.other	Water content	en
dc.subject.other	Hydrogen bonds	en
dc.title	Diffusion studies through fluorescence recovery after photobleaching in hydrated polyamides	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/pen.21843	en
heal.identifier.secondary	http://dx.doi.org/10.1002/pen.21843	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	The effect of hydrogen bonding on the diffusivities of two almost identical fluorescent probes through polyamides was examined using fluorescence recovery after photobleaching (FRAP). The two molecules have the same geometry and a negligible difference in their molecular weight, the main difference confined is one characteristic group able to form a hydrogen bond with the polyamide matrices. Moreover, the effect of hydration on the diffusion coefficients and the plasticization activation energy is also studied as the experiments are repeated in various relative humidity environments. The differences in the diffusivities of the two molecules due to hydrogen bonding were as much as one order of magnitude regardless the matrix or the water content. In addition, it is shown that the plasticization activation energy of diffusion is also affected by matrix-diffusant interactions as the relevant values of the two examined diffusing molecules showed noticeable differences due to hydrogen bonding. POLYM. ENG. SCI., 51:532-541, 2011. (C) 2010 Society of Plastics Engineers	en
heal.publisher	WILEY-BLACKWELL PUBLISHING, INC	en
heal.journalName	Polymer Engineering and Science	en
dc.identifier.doi	10.1002/pen.21843	en
dc.identifier.isi	ISI:000287622700015	en
dc.identifier.volume	51	en
dc.identifier.issue	3	en
dc.identifier.spage	532	en
dc.identifier.epage	541	en