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Dissipative particle dynamics and flory − huggins theories for predicting the rheological behavior of ultrahigh molecular weight polyethylene blends / Jing-Gang Gai in Industrial & engineering chemistry research, Vol. 49 N° 22 (Novembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11369-11379 Titre : Dissipative particle dynamics and flory − huggins theories for predicting the rheological behavior of ultrahigh molecular weight polyethylene blends Type de document : texte imprimé Auteurs : Jing-Gang Gai, Auteur ; Guo-Hua Hu, Auteur ; Hui-Lin Li, Auteur Année de publication : 2011 Article en page(s) : pp. 11369-11379 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Prediction Résumé : This work aims to experimentally and theoretically study the effects of normal molecular weight polymers (NMWP) such as high-density polyethylene, low-density polyethylene, and polypropylene as processing aids on the morphology and rheological behavior of ultrahigh molecular weight polyethylene (UHMWPE). As is shown by scanning electron microscope observations, rheological measurements, and dissipative particle dynamics simulations, formation of a lubricating phase between the UHMWPE particles is responsible for the viscosity reduction of the UHMWPE. Besides, phase diagram studies on the UHMWPE/NMWP blend suggest that the optimum composition ratio of the blends lies in their composition-sensitive region when the parameter χ and molecular weight of each component are fixed at low shear rates. Meanwhile, the optimum range of parameter χ is above but close to the corresponding binodal curve at high shear rates. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23437834 [article] Dissipative particle dynamics and flory − huggins theories for predicting the rheological behavior of ultrahigh molecular weight polyethylene blends [texte imprimé] / Jing-Gang Gai, Auteur ; Guo-Hua Hu, Auteur ; Hui-Lin Li, Auteur . - 2011 . - pp. 11369-11379. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11369-11379 Mots-clés : Prediction Résumé : This work aims to experimentally and theoretically study the effects of normal molecular weight polymers (NMWP) such as high-density polyethylene, low-density polyethylene, and polypropylene as processing aids on the morphology and rheological behavior of ultrahigh molecular weight polyethylene (UHMWPE). As is shown by scanning electron microscope observations, rheological measurements, and dissipative particle dynamics simulations, formation of a lubricating phase between the UHMWPE particles is responsible for the viscosity reduction of the UHMWPE. Besides, phase diagram studies on the UHMWPE/NMWP blend suggest that the optimum composition ratio of the blends lies in their composition-sensitive region when the parameter χ and molecular weight of each component are fixed at low shear rates. Meanwhile, the optimum range of parameter χ is above but close to the corresponding binodal curve at high shear rates. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23437834