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Films formed from polystyrene latex/clay composites : A fluorescence study / Saziye Ugur in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 7 (07/2005)

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[article]
inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 2, N° 7 (07/2005) . - p. 565-575

Titre :	Films formed from polystyrene latex/clay composites : A fluorescence study
Type de document :	texte imprimé
Auteurs :	Saziye Ugur, Auteur ; Önder Pekcan, Auteur ; Ayse Alemdar, Auteur
Année de publication :	2005
Article en page(s) :	p. 565-575
Note générale :	Bibliogr.
Langues :	Américain (ame)
Tags :	'Propriété optique' 'Spectrométrie de fluorescence' 'Etude Morphologique' Transparence Recuit 'Relation mise en oeuvre structure' 'Effet concentration' la température' propriété' Montmorillonite 'Formation film' 'Matériau renforcé' Dispersion composite' Argile Latex Polystyrène
Index. décimale :	667.9 Revêtements et enduits
Résumé :	This study reports a steady-state fluorescence (SSF) technique for studying film formation from surfactant-free polystyrene (PS) latex and Na-montmorillonite (SNaM) composites. The composite films were prepared from pyrene (P)-labeled PS particles and SNaM clay at room temperature and annealed at elevated temperatures in 10-min intervals above glass transition temperature (Tq) of polystyrene. During the annealing processes, the transparency of the film improved considerably. Scattered light (IS) and fluorescence intensity (IP) from P were measured after each annealing step to monitor the stages of film formation. Evolution of transparency of composite films was monitored by using photon transmission intensity, Itr. Scanning electron microscopy (SEM) was used to detect the variation in physical structure of annealed composite films. Minimum film formation temperature, T0' and healing temperatures, Th' were determined. Void closure and interdiffusion stages were modeled and related activation energies were determined. It was observed that both activation energies increased as the percent of SNaM was increased in composite films.
DOI :	10.1007/s11998-005-0016-8
En ligne :	https://link.springer.com/content/pdf/10.1007%2Fs11998-005-0016-8.pdf
Format de la ressource électronique :	Pdf
Permalink :	https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3804

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