Novel polyesteramide-based di- and triblock copolymers: From thermo-mechanical properties to hydrolytic degradation

Gaëlle Deshayes, Cécile Delcourt, Ingrid Verbruggen, Lise Trouillet-Fonti, Franck Touraud, Etienne Fleury, Philippe Degée, Mathias Destarac, Rudolph Willem, Philippe Dubois

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

Résumé

Two types of biodegradable poly(-caprolactone (CLo))-co-poly(-caprolactam (CLa)) copolymers were prepared by catalyzed hydrolytic ring-opening polymerization. For the first type of materials, the respective cyclic comonomers were added simultaneously in the reaction medium leading to the formation of copolymers having a random distribution of co-units within the polyesteramide sequence, as evidenced by 1H and 13C NMR. For the second type of copolymers, the cyclic comonomers were added sequentially in the reaction medium yielding diblock polyesteramides, again evidenced by NMR. The thermal and thermo-mechanical properties of the copolymers were investigated by DSC and DMA and correlated with the copolymer topology and composition. The copolymers were characterized by a storage modulus and α transition temperature intermediate to the modulus and Tg of the corresponding homopolymers. The chemical composition and molecular weight of the copolymers proved to have only a limited effect on the thermo-mechanical properties of the materials. The hydrolytic degradation of random copolymers was studied in a phosphate buffer at 60 °C and discussed in terms of chemical composition and molecular weight of the copolymers.

langue originaleAnglais
Pages (de - à)98-110
Nombre de pages13
journalEuropean Polymer Journal
Volume47
Numéro de publication1
Les DOIs
Etat de la publicationPublié - 1 janv. 2011
Modification externeOui

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