Documents disponibles écrits par cet auteur

A comparative study of crystallization, melting behavior, and morphology of biodegradable poly(ethylene adipate) and poly(ethylene adipate-co-5 mol % ethylene succinate) / Huina Wu in Industrial & engineering chemistry research, Vol. 51 N° 40 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13323-13328 Titre : A comparative study of crystallization, melting behavior, and morphology of biodegradable poly(ethylene adipate) and poly(ethylene adipate-co-5 mol % ethylene succinate) Type de document : texte imprimé Auteurs : Huina Wu, Auteur ; Zhaobin Qiu, Auteur Année de publication : 2012 Article en page(s) : pp. 13323-13328 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Morphology  Melting  Crystallization  Comparative  study Résumé : A comparative study was performed in this work to investigate the crystal structure, thermal behavior, melting behavior, overall isothermal melt crystallization kinetics, and spherulitic morphology of biodegradable neat poly(ethylene adipate) (PEA) and its novel copolyester poly(ethylene adipate-co-5 mol % ethylene succinate) P(EA-co-5 mol % ES). Both neat PEA and P(EA-co-5 mol % ES) show the same crystal structure. Relative to neat PEA, the incorporation of a small amount of ethylene succinate (ES) composition exerts almost no influence on the glass-transition temperature, reduces the melting point temperature and equilibrium melting point temperature slightly, but suppresses the nonisothermal melt and cold crystallization significantly of P(EA-co-5 mol % ES). Depending on crystallization temperature, both neat PEA and P(EA-co-5 mol % ES) show double melting endotherms or one melting endotherm, which can be well explained by the melting, recrystallization, and remelting mechanism. The overall isothermal melt crystallization kinetics was studied for neat PEA and P(EA-co-5 mol % ES) and analyzed by the Avrami equation. With increasing crystallization temperature, the crystallization rates are reduced for both neat PEA and P(EA-co-5 mol % ES); moreover, the crystallization rate is faster in neat PEA than in P(EA-co-5 mol % ES) at a given crystallization temperature. The crystallization mechanism remains unchanged despite crystallization temperature and the incorporation of ES composition. Depending on crystallization temperature, neat PEA and P(EA-co-5 mol % ES) may form ring-banded or ringless spherulites. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451482 [article] A comparative study of crystallization, melting behavior, and morphology of biodegradable poly(ethylene adipate) and poly(ethylene adipate-co-5 mol % ethylene succinate) [texte imprimé] / Huina Wu, Auteur ; Zhaobin Qiu, Auteur . - 2012 . - pp. 13323-13328. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13323-13328 Mots-clés : Morphology  Melting  Crystallization  Comparative  study Résumé : A comparative study was performed in this work to investigate the crystal structure, thermal behavior, melting behavior, overall isothermal melt crystallization kinetics, and spherulitic morphology of biodegradable neat poly(ethylene adipate) (PEA) and its novel copolyester poly(ethylene adipate-co-5 mol % ethylene succinate) P(EA-co-5 mol % ES). Both neat PEA and P(EA-co-5 mol % ES) show the same crystal structure. Relative to neat PEA, the incorporation of a small amount of ethylene succinate (ES) composition exerts almost no influence on the glass-transition temperature, reduces the melting point temperature and equilibrium melting point temperature slightly, but suppresses the nonisothermal melt and cold crystallization significantly of P(EA-co-5 mol % ES). Depending on crystallization temperature, both neat PEA and P(EA-co-5 mol % ES) show double melting endotherms or one melting endotherm, which can be well explained by the melting, recrystallization, and remelting mechanism. The overall isothermal melt crystallization kinetics was studied for neat PEA and P(EA-co-5 mol % ES) and analyzed by the Avrami equation. With increasing crystallization temperature, the crystallization rates are reduced for both neat PEA and P(EA-co-5 mol % ES); moreover, the crystallization rate is faster in neat PEA than in P(EA-co-5 mol % ES) at a given crystallization temperature. The crystallization mechanism remains unchanged despite crystallization temperature and the incorporation of ES composition. Depending on crystallization temperature, neat PEA and P(EA-co-5 mol % ES) may form ring-banded or ringless spherulites. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451482

Crystallization and morphology in a 30/70 poly (ethylene succinate - co - 6 mol % butylene succinate) / poly (ethylene oxide) blend / Yan Yang in Industrial & engineering chemistry research, Vol. 51 N° 26 (Juillet 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 9191-9197 Titre : Crystallization and morphology in a 30/70 poly (ethylene succinate - co - 6 mol % butylene succinate) / poly (ethylene oxide) blend Type de document : texte imprimé Auteurs : Yan Yang, Auteur ; Zhaobin Qiu, Auteur Année de publication : 2012 Article en page(s) : pp. 9191-9197 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Morphology  Crystallization Résumé : Crystallization and morphology were studied in a 30/70 poly(ethylene succinate-co-6 mol % butylene succinate)/ poly(ethylene oxide) (P(ES-co-6 mol % BS)/PEO) blend in this work. Depending on the crystallization conditions, including one-step and two-step crystallization, both components may crystallize separately or simultaneously. P(ES-co-6 mol % BS) and PEO crystallized separately via two-step crystallization. When the crystallization temperature was between the melting points of the two components, both the spherulitic growth rate and the overall crystallization rate of P(ES-co-6 mol % BS) decreased with increasing crystallization temperature; moreover, they were slower in the blend than in neat P(ES-co-6 mol % BS) at the same crystallization temperature. When the crystallization temperature was further lowered below the melting point of PEO, PEO crystallized only as tiny crystals within the P(ES-co-6 mol % BS) spherulites formed earlier, while its overall crystallization rate was increased significantly in the presence of the P(ES-co-6 mol % BS) crystals. In the case of simultaneous crystallization, growth of both P(ES-co-6 mol % BS) and PEO spherulites and the formation of interpenetrated spherulites were observed in a wide crystallization temperature range via one-step crystallization. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26107477 [article] Crystallization and morphology in a 30/70 poly (ethylene succinate - co - 6 mol % butylene succinate) / poly (ethylene oxide) blend [texte imprimé] / Yan Yang, Auteur ; Zhaobin Qiu, Auteur . - 2012 . - pp. 9191-9197. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 9191-9197 Mots-clés : Morphology  Crystallization Résumé : Crystallization and morphology were studied in a 30/70 poly(ethylene succinate-co-6 mol % butylene succinate)/ poly(ethylene oxide) (P(ES-co-6 mol % BS)/PEO) blend in this work. Depending on the crystallization conditions, including one-step and two-step crystallization, both components may crystallize separately or simultaneously. P(ES-co-6 mol % BS) and PEO crystallized separately via two-step crystallization. When the crystallization temperature was between the melting points of the two components, both the spherulitic growth rate and the overall crystallization rate of P(ES-co-6 mol % BS) decreased with increasing crystallization temperature; moreover, they were slower in the blend than in neat P(ES-co-6 mol % BS) at the same crystallization temperature. When the crystallization temperature was further lowered below the melting point of PEO, PEO crystallized only as tiny crystals within the P(ES-co-6 mol % BS) spherulites formed earlier, while its overall crystallization rate was increased significantly in the presence of the P(ES-co-6 mol % BS) crystals. In the case of simultaneous crystallization, growth of both P(ES-co-6 mol % BS) and PEO spherulites and the formation of interpenetrated spherulites were observed in a wide crystallization temperature range via one-step crystallization. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26107477

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

Effect of orotic acid on the crystallization kinetics and morphology of biodegradable poly (l-lactide) as an efficient nucleating agent / Zhaobin Qiu 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. 12299-12303 Titre : Effect of orotic acid on the crystallization kinetics and morphology of biodegradable poly (l-lactide) as an efficient nucleating agent Type de document : texte imprimé Auteurs : Zhaobin Qiu, Auteur ; Zhisheng Li, Auteur Année de publication : 2011 Article en page(s) : pp. 12299-12303 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Morphology  Kinetics  Crystallization Résumé : The wider practical application of biodegradable and biocompatible poly(L-lactic acid) (PLLA) has been restricted because of many disadvantages, especially its relatively slow crystallisation rate. In this note, a PLLA/orotic add (OA) composite was prepared via a simple melt compounding method. It is found that both the nonisothermal melt crystallization and overall isothermal melt crystallization kinetics of PLLA have been enhanced signifcantly in the composite, even at very low OA content, relative to that of neat PLLA, indicating that OA is an efficient muleating agent of PLLA for its wider practical application, especially as biomaterial. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24697552 [article] Effect of orotic acid on the crystallization kinetics and morphology of biodegradable poly (l-lactide) as an efficient nucleating agent [texte imprimé] / Zhaobin Qiu, Auteur ; Zhisheng Li, Auteur . - 2011 . - pp. 12299-12303. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 21 (Novembre 2011) . - pp. 12299-12303 Mots-clés : Morphology  Kinetics  Crystallization Résumé : The wider practical application of biodegradable and biocompatible poly(L-lactic acid) (PLLA) has been restricted because of many disadvantages, especially its relatively slow crystallisation rate. In this note, a PLLA/orotic add (OA) composite was prepared via a simple melt compounding method. It is found that both the nonisothermal melt crystallization and overall isothermal melt crystallization kinetics of PLLA have been enhanced signifcantly in the composite, even at very low OA content, relative to that of neat PLLA, indicating that OA is an efficient muleating agent of PLLA for its wider practical application, especially as biomaterial. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24697552

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

Isothermal and nonisothermal cold crystallization behaviors of biodegradable poly (l-lactide) / octavinyl - polyhedral oligomeric silsesquioxanes nanocomposites / Jing Yu in Industrial & engineering chemistry research, Vol. 50 N° 22 (Novembre 2011) 

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Miscibility and crystallization behavior of biodegradable poly (butylene succinate) / tannic acid blends / Fang Yang in Industrial & engineering chemistry research, Vol. 50 N° 21 (Novembre 2011) 

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Morphology, crystallization behavior, and dynamic mechanical properties of biodegradable poly (E - caprolactone) / thermally reduced graphene nanocomposites / Jinbing Zhang in Industrial & engineering chemistry research, Vol. 50 N° 24 (Décembre 2011) 

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Synthesis, crystallization kinetics, and morphology of novel biodegradable poly(butylene succinate-co-hexamethylene succinate) copolyesters / Guyu Wang in Industrial & engineering chemistry research, Vol. 51 N° 50 (Décembre 2012) 

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