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Effect of low thermally reduced graphene loadings on the crystallization kinetics and morphology of biodegradable poly(3-hydroxybutyrate) / Xiangjin Jing in Industrial & engineering chemistry research, Vol. 51 N° 42 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 42 (Octobre 2012) . - pp. 13686-13691 Titre : Effect of low thermally reduced graphene loadings on the crystallization kinetics and morphology of biodegradable poly(3-hydroxybutyrate) Type de document : texte imprimé Auteurs : Xiangjin Jing, Auteur ; Zhaobin Qiu, Auteur Année de publication : 2012 Article en page(s) : pp. 13686-13691 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Morphology  Kinetics  Crystallization  Loading Résumé : Biodegradable poly(3-hydroxybutyrate) (PHB) and thermally reduced graphene (TRG) nanocomposites have been prepared successfully via a solution and coagulation method in this work at low TRG loadings. The effects of TRG on the crystal structure, spherulitic morphology, nonisothermal melt crystallization behavior, and isothermal melt crystallization kinetics of PHB in the PHB/TRG nanocomposites were investigated with various techniques. It was found that TRG does not change the crystal structure of PHB but apparently increases the nucleation density of PHB spherulites in the PHB/TRG nanocomposites. Moreover, both the nonisothermal and isothermal melt crystallizations of PHB are enhanced significantly in the nanocomposites because of the efficient nucleating agent effect of TRG. In addition, the isothermal melt crystallization kinetics of neat PHB and the PHB/TRG nanocomposites was analyzed by the Avrami equation. The overall isothermal melt crystallization rates of PHB are increased with deceasing crystallization temperature and increasing the TRG loadings in the nanocomposites; however, the crystallization mechanism remains unchanged in spite of the crystallization temperature and TRG loadings. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26508194 [article] Effect of low thermally reduced graphene loadings on the crystallization kinetics and morphology of biodegradable poly(3-hydroxybutyrate) [texte imprimé] / Xiangjin Jing, Auteur ; Zhaobin Qiu, Auteur . - 2012 . - pp. 13686-13691. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 42 (Octobre 2012) . - pp. 13686-13691 Mots-clés : Morphology  Kinetics  Crystallization  Loading Résumé : Biodegradable poly(3-hydroxybutyrate) (PHB) and thermally reduced graphene (TRG) nanocomposites have been prepared successfully via a solution and coagulation method in this work at low TRG loadings. The effects of TRG on the crystal structure, spherulitic morphology, nonisothermal melt crystallization behavior, and isothermal melt crystallization kinetics of PHB in the PHB/TRG nanocomposites were investigated with various techniques. It was found that TRG does not change the crystal structure of PHB but apparently increases the nucleation density of PHB spherulites in the PHB/TRG nanocomposites. Moreover, both the nonisothermal and isothermal melt crystallizations of PHB are enhanced significantly in the nanocomposites because of the efficient nucleating agent effect of TRG. In addition, the isothermal melt crystallization kinetics of neat PHB and the PHB/TRG nanocomposites was analyzed by the Avrami equation. The overall isothermal melt crystallization rates of PHB are increased with deceasing crystallization temperature and increasing the TRG loadings in the nanocomposites; however, the crystallization mechanism remains unchanged in spite of the crystallization temperature and TRG loadings. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26508194