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Radical - mediated graft modification of polyethylene models with vinyltrimethoxysilane / P. Pollet in Industrial & engineering chemistry research, Vol. 50 N° 21 (Novembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 21 (Novembre 2011) . - pp. 12246-12253 Titre : Radical - mediated graft modification of polyethylene models with vinyltrimethoxysilane : a fundamental study Type de document : texte imprimé Auteurs : P. Pollet, Auteur ; C. L. Liotta, Auteur ; C. A. Eckert, Auteur Année de publication : 2011 Article en page(s) : pp. 12246-12253 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Modeling Résumé : Cross-linked polyethylenes have widespread applications such as insulators for current-carrying wires/cables and for hot water pipes. Industrially, cross-linked polyethylene can be prepared via the radical-initiated grafting of polyethylene with vinyltrimethoxysilane (VTMS) followed by moisture-induced cross-linking. The efficiency of the grafting reaction is not optimal: (1) a large portion of the VTMS remains unreacted and (2) controlling the distribution and extent of grafting is difficult. We present new contributions to the fundamental understanding of grafting reactions with VTMS on polymeric models (dodecane and heptane) as to the effect of phenyllithium capping reaction time on the analyses, the origin of the observation of multiple grafts, and the regiochemistry of the multiple graft products. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24697543 [article] Radical - mediated graft modification of polyethylene models with vinyltrimethoxysilane : a fundamental study [texte imprimé] / P. Pollet, Auteur ; C. L. Liotta, Auteur ; C. A. Eckert, Auteur . - 2011 . - pp. 12246-12253. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 21 (Novembre 2011) . - pp. 12246-12253 Mots-clés : Modeling Résumé : Cross-linked polyethylenes have widespread applications such as insulators for current-carrying wires/cables and for hot water pipes. Industrially, cross-linked polyethylene can be prepared via the radical-initiated grafting of polyethylene with vinyltrimethoxysilane (VTMS) followed by moisture-induced cross-linking. The efficiency of the grafting reaction is not optimal: (1) a large portion of the VTMS remains unreacted and (2) controlling the distribution and extent of grafting is difficult. We present new contributions to the fundamental understanding of grafting reactions with VTMS on polymeric models (dodecane and heptane) as to the effect of phenyllithium capping reaction time on the analyses, the origin of the observation of multiple grafts, and the regiochemistry of the multiple graft products. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24697543