| Titre : | Crystallization and morphology in a 30/70 poly (ethylene succinate - co - 6 mol % butylene succinate) / poly (ethylene oxide) blend (2012) |
| Auteurs : | Yan Yang, Auteur ; Zhaobin Qiu, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 51 N° 26, Juillet 2012) |
| Article en page(s) : | pp. 9191-9197 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | 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 |
