title: Polybutylene succinate adipate/starch blends: a morphological study for the design of controlled release films.
abstract: Films made of plasticized starch (PLS)/poly(butylene succinate co-butylene adipate) (PBSA) blends were prepared by thermomechanical processing varying the PBSA proportions in blends to obtain biphasic materials with distinct morphologies. These morphologies were characterized by selective extraction of each phase, microscopic observations, and selective water/oxygen permeation properties. These experiments allowed identifying the blend compositions corresponding to the beginning of partial continuity (cluster partial percolation) until total continuity of each phases. This property was related to the controlled release of model molecule (fluorescein) previously dispersed in the PLS and revealed that its release depended on the tortuosity of the PLS phase tailored by the polymer blends composition and by the limited swelling of the PLS when entrapped in the PBSA phase. Future applications will focus on food preservatives dispersed in PBSA-PLS blends to obtain active antimicrobial packaging put in direct contact with intermediate to high moisture foods.
authors.affiliation: Université de Lyon, Université Lyon 1-ISARA Lyon, Laboratoire de Bioingénierie et Dynamique Microbienne aux Interfaces Alimentaires (BioDyMIA, EA n°3733), IUT Lyon 1 site de Bourg en Bresse, Technopole Alimentec, rue Henri de Boissieu, F-01000 Bourg en Bresse, France.
authors.forename: Fadi
authors.initials: F
authors.lastname: Khalil
authors.affiliation: Université de Lyon, Université Lyon 1-ISARA Lyon, Laboratoire de Bioingénierie et Dynamique Microbienne aux Interfaces Alimentaires (BioDyMIA, EA n°3733), IUT Lyon 1 site de Bourg en Bresse, Technopole Alimentec, rue Henri de Boissieu, F-01000 Bourg en Bresse, France.
authors.forename: Sophie
authors.initials: S
authors.lastname: Galland
authors.affiliation: Université de Lyon, Université Lyon 1-ISARA Lyon, Laboratoire de Bioingénierie et Dynamique Microbienne aux Interfaces Alimentaires (BioDyMIA, EA n°3733), IUT Lyon 1 site de Bourg en Bresse, Technopole Alimentec, rue Henri de Boissieu, F-01000 Bourg en Bresse, France.
authors.forename: Amandine
authors.initials: A
authors.lastname: Cottaz
authors.affiliation: Université de Lyon, Université Lyon 1-ISARA Lyon, Laboratoire de Bioingénierie et Dynamique Microbienne aux Interfaces Alimentaires (BioDyMIA, EA n°3733), IUT Lyon 1 site de Bourg en Bresse, Technopole Alimentec, rue Henri de Boissieu, F-01000 Bourg en Bresse, France. Electronic address: catherine.joly@univ-lyon1.fr.
authors.forename: Catherine
authors.initials: C
authors.lastname: Joly
authors.affiliation: Université de Lyon, Université Lyon 1-ISARA Lyon, Laboratoire de Bioingénierie et Dynamique Microbienne aux Interfaces Alimentaires (BioDyMIA, EA n°3733), IUT Lyon 1 site de Bourg en Bresse, Technopole Alimentec, rue Henri de Boissieu, F-01000 Bourg en Bresse, France.
authors.forename: Pascal
authors.initials: P
authors.lastname: Degraeve
mesh_terms: D000272:Adipates / Q000737:chemistry*; D001672:Biocompatible Materials; D003692:Delayed-Action Preparations; D011108:Polymers / Q000737:chemistry*; D013213:Starch / Q000737:chemistry*
chemical_list: D000272:Adipates; D001672:Biocompatible Materials; D003692:Delayed-Action Preparations; D011108:Polymers; C029900:adipic acid; D013213:Starch
keywords: Active packaging; Migration; Morphology; Permeation; Polymer blends; Release