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Applying an experimental design to improve the characteristics of microcapsules containing phase change materials for fabric uses / Luz Sánchez in Industrial & engineering chemistry research, Vol. 47 N° 23 (Décembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N° 23 (Décembre 2008) . - p. 9783–9790 Titre : Applying an experimental design to improve the characteristics of microcapsules containing phase change materials for fabric uses Type de document : texte imprimé Auteurs : Luz Sánchez, Auteur ; Engracia Lacasa, Auteur ; Manuel Carmona, Auteur Année de publication : 2009 Article en page(s) : p. 9783–9790 Note générale : Chemistry engineering Langues : Anglais (eng) Mots-clés : Experimental  design  Characteristics  of  microcapsules  Fabric  uses Résumé : Microcapsules with a high amount of PRS paraffin wax encapsulated and narrow size distribution were prepared by a Shirasu porous glass (SPG) emulsification technique and a subsequent suspensionlike polymerization process. An experimental design approach, based on a central composite design, was used to determine quantitatively the effect of RepSol-YPF Paraffin (PRS) paraffin wax/styrene mass ratio (PRS/St), percentage of polyvinylpyrrolidone/styrene mass ratio (% PVP/St), and water/styrene mass ratio (H2O/St) on the phase change material (PCM) microcapsules properties. The % PVP/St mass ratio was the most important parameter affecting the particle size distribution. The thermal energy storage of microcapsules increases with the PRS/St mass ratio used. The following synthesis conditions, mass ratios PRS/St of 1.02, % PVP/St of 9.43, and H2O/St of 8.23, allowed the the proper main particle size in number (4.80 μm) for fabrics applications containing the maximum phase change material encapsulated with a latent heat of 102.42 J/g to be achieved. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801107e [article] Applying an experimental design to improve the characteristics of microcapsules containing phase change materials for fabric uses [texte imprimé] / Luz Sánchez, Auteur ; Engracia Lacasa, Auteur ; Manuel Carmona, Auteur . - 2009 . - p. 9783–9790. Chemistry engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N° 23 (Décembre 2008) . - p. 9783–9790 Mots-clés : Experimental  design  Characteristics  of  microcapsules  Fabric  uses Résumé : Microcapsules with a high amount of PRS paraffin wax encapsulated and narrow size distribution were prepared by a Shirasu porous glass (SPG) emulsification technique and a subsequent suspensionlike polymerization process. An experimental design approach, based on a central composite design, was used to determine quantitatively the effect of RepSol-YPF Paraffin (PRS) paraffin wax/styrene mass ratio (PRS/St), percentage of polyvinylpyrrolidone/styrene mass ratio (% PVP/St), and water/styrene mass ratio (H2O/St) on the phase change material (PCM) microcapsules properties. The % PVP/St mass ratio was the most important parameter affecting the particle size distribution. The thermal energy storage of microcapsules increases with the PRS/St mass ratio used. The following synthesis conditions, mass ratios PRS/St of 1.02, % PVP/St of 9.43, and H2O/St of 8.23, allowed the the proper main particle size in number (4.80 μm) for fabrics applications containing the maximum phase change material encapsulated with a latent heat of 102.42 J/g to be achieved. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801107e