caa a22 4500 445385170 CHVBK 20180317143030.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10924-011-0354-9 doi (NATIONALLICENCE)springer-10.1007/s10924-011-0354-9 Novative Biomaterials Based on Chitosan and Poly(ε-Caprolactone): Elaboration of Porous Structures [Elektronische Daten] [Verónica Martino, Eric Pollet, Luc Avérous] The swelling capability of chitosan was explored in order to use water both, as volatile plasticizer and as pore-forming agent. Chitosan powder was swelled in acidic aqueous solution and melt blended with poly(ε-caprolactone) (PCL). After stabilization at 57% RH and 25°C, samples suffered a water mass loss of around 30wt% without dimensions variation. Despite the low miscibility of these biopolymers, quite homogeneous dispersion of chitosan within the polyester matrix was obtained. Some interactions between both biopolymers could be observed. To obtain chitosan phase with a thermoplastic-like behaviour, the plasticization effect was also studied by the addition of 25wt% glycerol as non volatile plasticizer. The equilibrium moisture content of samples increased with the incorporation of glycerol due to its hydrophilic nature. Morphology, thermal and mechanical properties of the blends were determined after stabilization. The preparation of rich PCL blends allowed the formation of macroporous structures since samples were not contracted after water loss and stabilization. These biomaterials with such a porous structure could be used for biomedical applications. Springer Science+Business Media, LLC, 2011 Chitosan nationallicence Polycaprolactone nationallicence Blend nationallicence Porous materials nationallicence Biomaterial nationallicence Biopolymer nationallicence Martino Verónica LIPHT-ECPM, EAc CNRS 4379, Université de Strasbourg, 25 Rue Becquerel, 67087, Strasbourg Cedex 2, France aut Pollet Eric LIPHT-ECPM, EAc CNRS 4379, Université de Strasbourg, 25 Rue Becquerel, 67087, Strasbourg Cedex 2, France aut Avérous Luc LIPHT-ECPM, EAc CNRS 4379, Université de Strasbourg, 25 Rue Becquerel, 67087, Strasbourg Cedex 2, France aut Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/4(2011-12-01), 819-826 1566-2543 19:4<819 2011 19 10924 https://doi.org/10.1007/s10924-011-0354-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10924-011-0354-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Martino Verónica LIPHT-ECPM, EAc CNRS 4379, Université de Strasbourg, 25 Rue Becquerel, 67087, Strasbourg Cedex 2, France aut NATIONALLICENCE 700 1- Pollet Eric LIPHT-ECPM, EAc CNRS 4379, Université de Strasbourg, 25 Rue Becquerel, 67087, Strasbourg Cedex 2, France aut NATIONALLICENCE 700 1- Avérous Luc LIPHT-ECPM, EAc CNRS 4379, Université de Strasbourg, 25 Rue Becquerel, 67087, Strasbourg Cedex 2, France aut NATIONALLICENCE 773 0- Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/4(2011-12-01), 819-826 1566-2543 19:4<819 2011 19 10924 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer