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Temperature responsive gels based on pluronic F127 and poly(vinyl alcohol) / Maria Bercea in Industrial & engineering chemistry research, Vol. 50 N° 7 (Avril 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 4199-4206 Titre : Temperature responsive gels based on pluronic F127 and poly(vinyl alcohol) Type de document : texte imprimé Auteurs : Maria Bercea, Auteur ; Raluca Nicoleta Darie, Auteur ; Loredana Elena Nita, Auteur Année de publication : 2011 Article en page(s) : pp. 4199-4206 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Pluronic  Vinyl  alcohol Résumé : Aqueous mixtures of Pluronic F127 and poly(vinyl alcohol) (20% polymer concentration in the system) were prepared and investigated by rheology and laser particle size distribution, in order to obtain temperature responsive gels for biomedical applications. The influence of the gelation conditions and system composition on the viscoelastic parameters and particle size distribution (which are very sensitive to the sol―gel transition process) was followed. The investigations realized at physiological temperature (37 °C) showed the thixotropic profile of the gels, the yield stress induced by the Pluronic presence, and the high elasticity evidenced in the creep-recovery tests. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1024408 [article] Temperature responsive gels based on pluronic F127 and poly(vinyl alcohol) [texte imprimé] / Maria Bercea, Auteur ; Raluca Nicoleta Darie, Auteur ; Loredana Elena Nita, Auteur . - 2011 . - pp. 4199-4206. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 4199-4206 Mots-clés : Pluronic  Vinyl  alcohol Résumé : Aqueous mixtures of Pluronic F127 and poly(vinyl alcohol) (20% polymer concentration in the system) were prepared and investigated by rheology and laser particle size distribution, in order to obtain temperature responsive gels for biomedical applications. The influence of the gelation conditions and system composition on the viscoelastic parameters and particle size distribution (which are very sensitive to the sol―gel transition process) was followed. The investigations realized at physiological temperature (37 °C) showed the thixotropic profile of the gels, the yield stress induced by the Pluronic presence, and the high elasticity evidenced in the creep-recovery tests. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1024408