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Khalil F, Galland S, Cottaz A, Joly C, Degraeve P. Polybutylene succinate adipate/starch blends: a morphological study for the design of controlled release films. Carbohydr Polym 2014; 108:272-80. [PMID: 24751274 DOI: 10.1016/j.carbpol.2014.02.062] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 02/18/2014] [Accepted: 02/19/2014] [Indexed: 11/17/2022]
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.
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Affiliation(s)
- Fadi Khalil
- 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
| | - Sophie Galland
- 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
| | - Amandine Cottaz
- 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
| | - Catherine Joly
- 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.
| | - Pascal Degraeve
- 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
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Weiner AA, Moore MC, Walker AH, Shastri VP. Modulation of protein release from photocrosslinked networks by gelatin microparticles. Int J Pharm 2008; 360:107-14. [DOI: 10.1016/j.ijpharm.2008.04.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2007] [Revised: 03/11/2008] [Accepted: 04/15/2008] [Indexed: 10/22/2022]
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El-Gholabzouri O, Cabrerizo-Vílchez MA, Hidalgo-Alvarez R. Streaming current, permeability, and microelectrophoresis of polystyrene latices in methanol–ethanol mixtures. J Colloid Interface Sci 2004; 275:336-41. [PMID: 15158419 DOI: 10.1016/j.jcis.2004.02.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2003] [Accepted: 02/05/2004] [Indexed: 11/30/2022]
Abstract
The influence of the solvent (methanol-ethanol mixtures) on the electrokinetic behavior of polystyrene latices with sulfate groups was studied (methanol content was increased by 0.2 at a constant KBr concentration of 1 mM). Viscosity, density, and dielectric constant (eta, rho, and epsilon) were determined at experimental conditions. Two latices (with different surface charge densities and sizes) were used. Electrophoresis measurements were used for dilute dispersions. Streaming current and hydrodynamic permeability were measured for porous plugs. Linear trends in the electrokinetic measurements were observed in the whole molar fraction range. The experimental data obtained from different techniques allow determining the zeta potential according to a well-established classical relationship. The results obtained were analyzed on the basis of the solvent mixture properties and the electrical interface behavior. In addition, permeability data provided valuable information to interpret effects at the solid-liquid interface of the porous plug.
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Affiliation(s)
- O El-Gholabzouri
- Grupo de Física de Fluidos y Biocoloides, Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
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