caa a22 4500 445385332 CHVBK 20180317143030.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10924-011-0285-5 doi (NATIONALLICENCE)springer-10.1007/s10924-011-0285-5 Analysis of the Structure-Properties Relationships of Different Multiphase Systems Based on Plasticized Poly(Lactic Acid) [Elektronische Daten] [Cécile Courgneau, Sandra Domenek, Alain Guinault, Luc Avérous, Violette Ducruet] Poly(lactic acid) is one of the most promising biobased and biodegradable polymers for food packaging, an application which requires good mechanical and barrier properties. In order to improve the mechanical properties, in particular the flexibility, PLA plasticization is required. However, plasticization induces generally a decrease in the barrier properties. Acetyl tributyl citrate (ATBC) and poly(ethylene glycol) 300 (PEG), highly recommended as plasticizers for PLA, were added up to 17 wt% in P(D,L)LA. In the case of PEG, a phase separation was observed for plasticizer contents higher than 5 wt%. Contrary to PEG, the Tg decrease due to ATBC addition, modelled with Fox's law, and the absence of phase separation, up to 17 wt% of plasticizer, confirm the miscibility of PLA and ATBC. Contents equal or higher than 13 wt% of ATBC yielded a substantial improvement of the elongation at break, becoming higher than 300%. The effect of PLA plasticization on the barrier properties was assessed by different molecules, with increasing interaction with the formulated material, such as helium, an inert gas, and oxygen and water vapour. In comparison to the neat sample, barrier properties against helium were maintained when PLA was plasticized with up to 17 wt% of ATBC. The oxygen permeability coefficient and the water vapour transmission rate doubled for mixtures with 17 wt% ATBC in PLA, but increased five-fold in the PEG plasticized samples. This result is most likely caused by increased solubility of oxygen and water in the PEG phase due to their mutual miscibility. To conclude, ATBC increases efficiently the elongation at break of PLA while maintaining the permeability coefficient of helium and keeping the barrier properties against oxygen and water vapour in the same order of magnitude. Springer Science+Business Media, LLC, 2011 Poly(lactic acid) nationallicence Barrier properties nationallicence Permeability nationallicence Thermo-mechanical properties nationallicence Plasticization nationallicence Courgneau Cécile INRA, UMR 1145 Ingénierie Procédés Aliments, 1 avenue des Olympiades, 91300, Massy, France aut Domenek Sandra AgroParisTech, UMR 1145 Ingénierie procédés Aliments, 1 avenue des Olympiades, 91300, Massy, France aut Guinault Alain CNAM, Laboratoire des Matériaux Industriels Polymères, 292 rue Saint-Martin, case courrier 322, 75141, Paris cedex 03, France aut Avérous Luc LIPHT-ECPM, EAc (CNRS) 4379, Université de Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France aut Ducruet Violette INRA, UMR 1145 Ingénierie Procédés Aliments, 1 avenue des Olympiades, 91300, Massy, France aut Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/2(2011-06-01), 362-371 1566-2543 19:2<362 2011 19 10924 https://doi.org/10.1007/s10924-011-0285-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10924-011-0285-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Courgneau Cécile INRA, UMR 1145 Ingénierie Procédés Aliments, 1 avenue des Olympiades, 91300, Massy, France aut NATIONALLICENCE 700 1- Domenek Sandra AgroParisTech, UMR 1145 Ingénierie procédés Aliments, 1 avenue des Olympiades, 91300, Massy, France aut NATIONALLICENCE 700 1- Guinault Alain CNAM, Laboratoire des Matériaux Industriels Polymères, 292 rue Saint-Martin, case courrier 322, 75141, Paris cedex 03, 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 700 1- Ducruet Violette INRA, UMR 1145 Ingénierie Procédés Aliments, 1 avenue des Olympiades, 91300, Massy, France aut NATIONALLICENCE 773 0- Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/2(2011-06-01), 362-371 1566-2543 19:2<362 2011 19 10924 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer