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The characteristics of a microcapsule made entirely from a new silicone-resign-polypeptide and its application / Yuka Ueda in IFSCC MAGAZINE, Vol. 6, N° 2 (04-05-06/2003)
[article]
Titre : The characteristics of a microcapsule made entirely from a new silicone-resign-polypeptide and its application Type de document : texte imprimé Auteurs : Yuka Ueda, Auteur ; Akihiro Segawa, Auteur ; Masato Yoshioka, Auteur Année de publication : 2003 Article en page(s) : p. 111-116 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Microcapsule 'Absorbeurs UV' Encapsulation Silicone 'Produit de protection solaire' Index. décimale : 668.5 Parfums et cosmétiques Résumé : A new method was developed to prepare microcapsules involving hydrophobic components and a totally new silicone-resin-polypeptide material used as the encapsulating body, where the polypeptide was made by hydrolysis of collagen and silk protein combined with silicone. This microcapsule was easily prepared from a silicone-resin-polypeptide in water solution. Not only was the extent of encapsulation in the micro-capsule as high as 90% (which has never been reached) but also the particle size was also homogeneous and could be sufficiently controlled to obtain very small sizes. Moreover, these microcapsules were resistant to relatively high shear forces and were stable over a long time period.
Application in cosmetics by using the UV absorbers (2-ethylhexyl-4-methoxycinnamate (EHMC) and 4-tert-butyl-4'-methoxy-dibenzoylmethane (BMDBM)) as the encapsulated ingredients was examined. Because the polymer acts like as surfactant itself, it was possible to apply organic UV absorbers in water-rich formulations without any surfactant. This formulation demonstrated a good moisturizing and soft skin feel. In addition, since the microcapsules were easily mixed with inorganic compounds like titanium dioxide and zinc oxide, the amount of their dispersants could be reduced to maintain a high SPF value. As a result, it was concluded that such microcapsules might be widely applied in cosmetics.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10595
in IFSCC MAGAZINE > Vol. 6, N° 2 (04-05-06/2003) . - p. 111-116[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003879 - Périodique Bibliothèque principale Documentaires Disponible Design and characteristic analysis of a new nozzle for preparing microencapsulated particles by RESS / Ya-qing Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)
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Titre : Design and characteristic analysis of a new nozzle for preparing microencapsulated particles by RESS Type de document : texte imprimé Auteurs : Ya-qing Liu, Auteur ; Gui-zhe Zhao, Auteur ; You-yi Sun, Auteur ; Fa-Xing Zhang, Auteur ; Li Xiao-ying, Auteur Année de publication : 2009 Article en page(s) : p. 377-382 Note générale : Bibliogr. Langues : Américain (ame) Tags : RESS Microcapsule Design of nozzle Technology coating Red phosphorus Index. décimale : 667.9 Revêtements et enduits Résumé : A new nozzle was designed for the technology of making microencapsulated particles by rapid expansion of supercritical solution (RESS). The design is based on the theory of gas dynamics in which the potential energy of high stagnation pressure is converted totally into effective velocity energy. Therefore, a high momentum of the exit jet can be obtained for improving the capability of removing molten debris quickly. Furthermore, the microencapsulated red phosphorus particles were prepared by RESS with the new nozzle, and the structure and property of the microencapsulated red phosphorus particles were characterized by the SEM images, droplet concentration distributions, and moisture absorption ratio. The results show that the process can effectively encapsulate the red phosphorus particles with the paraffin. DOI : 10.1007/s11998-008-9145-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9145-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6118
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 3 (09/2009) . - p. 377-382[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011503 - Périodique Bibliothèque principale Documentaires Disponible