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Properties and applications of poly(dimethylsiloxane) containing poly(meth)acrylate-based thermoplastic elastomer/clay nanocomposites / Ravikumar Muppalla in Industrial & engineering chemistry research, Vol. 51 N° 49 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 49 (Décembre 2012) . - pp. 15942-15952 Titre : Properties and applications of poly(dimethylsiloxane) containing poly(meth)acrylate-based thermoplastic elastomer/clay nanocomposites Type de document : texte imprimé Auteurs : Ravikumar Muppalla, Auteur ; Suresh K. Jewrajka, Auteur Année de publication : 2013 Article en page(s) : pp. 15942-15952 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Nanocomposite Résumé : The beneficial effect of covalent attachment of a moderate amount (8―16 wt %) of poly(dimethylsiloxane) (PDMS) into poly(meth)acrylate-based thermoplastic elastomers (TPEs) toward clay nanocomposite (NC) formation with improved mechanical properties, thermal properties, and tunable hydrophobic drug release behavior is reported. XRD and TEM analyses suggest that the covalent attachment of PDMS enhances the NC formation with both exfoliated and intercalated structures. With increasing amount of attached PDMS, the d-spacing of the intercalated clay part increases and the copolymer forms exclusively exfoliated structure at nearly 16 wt % PDMS content. Hence, clay NCs of a wide range of well-defined block copolymers of PDMS and poly(meth)acrylates can conveniently be prepared by this technique. The surface characterizations revealed comparatively more hydrophobic surface of PDMS-containing poly(meth)acrylate-based TPE/clay NCs than the corresponding neat poly(meth)acrylate-based TPE/clay NC. The improved thermal stability, improved mechanical properties, and sustained drug eluting behavior together with preferential surface coverage by biocompatible and biostable PDMS might provide further opportunities for the use of PDMS-containing poly(meth)acrylate-based TPE/clay NCs in possible biomedical applications. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732120 [article] Properties and applications of poly(dimethylsiloxane) containing poly(meth)acrylate-based thermoplastic elastomer/clay nanocomposites [texte imprimé] / Ravikumar Muppalla, Auteur ; Suresh K. Jewrajka, Auteur . - 2013 . - pp. 15942-15952. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 49 (Décembre 2012) . - pp. 15942-15952 Mots-clés : Nanocomposite Résumé : The beneficial effect of covalent attachment of a moderate amount (8―16 wt %) of poly(dimethylsiloxane) (PDMS) into poly(meth)acrylate-based thermoplastic elastomers (TPEs) toward clay nanocomposite (NC) formation with improved mechanical properties, thermal properties, and tunable hydrophobic drug release behavior is reported. XRD and TEM analyses suggest that the covalent attachment of PDMS enhances the NC formation with both exfoliated and intercalated structures. With increasing amount of attached PDMS, the d-spacing of the intercalated clay part increases and the copolymer forms exclusively exfoliated structure at nearly 16 wt % PDMS content. Hence, clay NCs of a wide range of well-defined block copolymers of PDMS and poly(meth)acrylates can conveniently be prepared by this technique. The surface characterizations revealed comparatively more hydrophobic surface of PDMS-containing poly(meth)acrylate-based TPE/clay NCs than the corresponding neat poly(meth)acrylate-based TPE/clay NC. The improved thermal stability, improved mechanical properties, and sustained drug eluting behavior together with preferential surface coverage by biocompatible and biostable PDMS might provide further opportunities for the use of PDMS-containing poly(meth)acrylate-based TPE/clay NCs in possible biomedical applications. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732120