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Effects of particle-induced crystallization on tribological behavior of polymer nanocomposites / David Huitink in Transactions of the ASME . Journal of tribology, Vol. 133 N° 2 (Avril 2011) 

Public ISBD [article]  in Transactions of the ASME . Journal of tribology > Vol. 133 N° 2 (Avril 2011) . - 09 p. Titre : Effects of particle-induced crystallization on tribological behavior of polymer nanocomposites Type de document : texte imprimé Auteurs : David Huitink, Auteur ; Tahira Zarrin, Auteur ; Matthew Sanders, Auteur Année de publication : 2012 Article en page(s) : 09 p. Note générale : Tribology Langues : Anglais (eng) Mots-clés : Biomedical  materials  Crystal  structure  Crystallisation  Filled  polymers  Friction  Gold  Nanocomposites  Nanomedicine  Nanoparticles  Particle  reinforced  composites  Pharmaceuticals  Wear Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Similar to conventional engineering fabrication processes, tribological performance of drugs and pills in pharmaceutical manufacturing plays an important role in quality and product yields. In the present research, we investigate the effects of crystal structures of workpiece materials on their tribological performance in conditions typical of pharmaceutical manufacturing processes. Sorbitol composites containing gold nanoparticles were evaluated for material properties and tribological performance. It was found that the control exhibited nonordered gamma forms of sorbitol, while the samples containing rod nanoparticles showed a collection of tiny needlelike crystals of gamma phase. Spherical nanoparticles precipitated beta and alpha phases of sorbitol, which were not seen in the other samples. These variations in the crystal structure resulted in an unusual wear behavior, leading to high friction and softness in the case of the nanocomposites. The nanoparticles were found to influence the crystal structure of the sorbitol matrix, resulting in mechanical and tribological behaviors. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013 [...] [article] Effects of particle-induced crystallization on tribological behavior of polymer nanocomposites [texte imprimé] / David Huitink, Auteur ; Tahira Zarrin, Auteur ; Matthew Sanders, Auteur . - 2012 . - 09 p. Tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 133 N° 2 (Avril 2011) . - 09 p. Mots-clés : Biomedical  materials  Crystal  structure  Crystallisation  Filled  polymers  Friction  Gold  Nanocomposites  Nanomedicine  Nanoparticles  Particle  reinforced  composites  Pharmaceuticals  Wear Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Similar to conventional engineering fabrication processes, tribological performance of drugs and pills in pharmaceutical manufacturing plays an important role in quality and product yields. In the present research, we investigate the effects of crystal structures of workpiece materials on their tribological performance in conditions typical of pharmaceutical manufacturing processes. Sorbitol composites containing gold nanoparticles were evaluated for material properties and tribological performance. It was found that the control exhibited nonordered gamma forms of sorbitol, while the samples containing rod nanoparticles showed a collection of tiny needlelike crystals of gamma phase. Spherical nanoparticles precipitated beta and alpha phases of sorbitol, which were not seen in the other samples. These variations in the crystal structure resulted in an unusual wear behavior, leading to high friction and softness in the case of the nanocomposites. The nanoparticles were found to influence the crystal structure of the sorbitol matrix, resulting in mechanical and tribological behaviors. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013 [...]