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Effect of Uracil on the Isothermal Melt Crystallization Kinetics and Polymorphic Crystals Control of Biodegradable Poly(butylene adipate) / Mengting Weng 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. 13862-13868 Titre : Effect of Uracil on the Isothermal Melt Crystallization Kinetics and Polymorphic Crystals Control of Biodegradable Poly(butylene adipate) Type de document : texte imprimé Auteurs : Mengting Weng, Auteur ; Yingran He, Auteur ; Zhaobin Qiu, Auteur Année de publication : 2012 Article en page(s) : pp. 13862-13868 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Kinetics  Melt  crystallization Résumé : Biodegradable poly(butylene adipate) (PBA) and uracil composites were prepared via a solution and casting method at low uracil loadings in this work. The isothermal melt crystallization rate has been increased apparently in the composites by the addition of uracil, which acts as a nucleating agent for the crystallization of PBA. PBA may crystallize in the α-or β-form under different conditions. During the nonisothermal melt crystallization, the α-form crystals of neat PBA are formed at only relatively slow cooling rate; however, the formation of α-form crystals can be induced by uracil in the composites at relatively faster cooling rates. The formation of polymorphic crystals of PBA may be regulated by changing cooling rate and the uracil loading, which provides an efficient way of controlling the polymorphic crystals formation and biodegradation behaviors. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26508211 [article] Effect of Uracil on the Isothermal Melt Crystallization Kinetics and Polymorphic Crystals Control of Biodegradable Poly(butylene adipate) [texte imprimé] / Mengting Weng, Auteur ; Yingran He, Auteur ; Zhaobin Qiu, Auteur . - 2012 . - pp. 13862-13868. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 42 (Octobre 2012) . - pp. 13862-13868 Mots-clés : Kinetics  Melt  crystallization Résumé : Biodegradable poly(butylene adipate) (PBA) and uracil composites were prepared via a solution and casting method at low uracil loadings in this work. The isothermal melt crystallization rate has been increased apparently in the composites by the addition of uracil, which acts as a nucleating agent for the crystallization of PBA. PBA may crystallize in the α-or β-form under different conditions. During the nonisothermal melt crystallization, the α-form crystals of neat PBA are formed at only relatively slow cooling rate; however, the formation of α-form crystals can be induced by uracil in the composites at relatively faster cooling rates. The formation of polymorphic crystals of PBA may be regulated by changing cooling rate and the uracil loading, which provides an efficient way of controlling the polymorphic crystals formation and biodegradation behaviors. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26508211