Author
Elisabeth Borredon
Other affiliations: École Normale Supérieure, University of Toulouse
Bio: Elisabeth Borredon is an academic researcher from Institut national de la recherche agronomique. The author has contributed to research in topics: Maleic anhydride & Succinic anhydride. The author has an hindex of 14, co-authored 25 publications receiving 766 citations. Previous affiliations of Elisabeth Borredon include École Normale Supérieure & University of Toulouse.
Papers
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TL;DR: In this paper, a series of starch and amylose esters with different degrees of substitution and side-chain length were prepared and studied, and the resulting esters were characterized by elemental analysis, 1 H nuclear magnetic resonance ( 1 H-NMR), Fourier transform infrared (FTIR), differential scan- ning (DSC), thermogravimetric analysis (TGA), contact angle, and water uptake mea- surements.
Abstract: A series of starch and amylose esters with different degrees of substitution and side-chain length were prepared and studied. The esters were prepared by acyla- tion of the polysaccharide with the appropriate acid chlorides, such as octanoic, dode- canoic, and octadecanoic. The degrees of substitution were 0.54, 1.8, and 2.7. After preparation, the resulting esters were characterized by elemental analysis, 1 H nuclear magnetic resonance ( 1 H-NMR), Fourier transform infrared (FTIR), differential scan- ning (DSC), thermogravimetric analysis (TGA), contact angle, and water uptake mea- surements. Their mechanical properties and, in particular, the tensile strength and elongation at break depend on the side-chain length and on the degree of substitution. The extent of their biodegradability, after exposure to activated sludge, was assessed by weight loss measurements and scanning electron microscopy (SEM). It was found that these new materials are biodegradable, and the biodegradation rate decreases with increasing degree of esterification. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 1440 -1451, 1999
160 citations
TL;DR: In this paper, a mixture of starch octanoates OCST1.8 and dodecanoate DODST2.7 with degrees of substitution (d.s.) of 1.8, 2.7 and a 2.
Abstract: In the present study, starch octanoates OCST1.8 and OCST2.7 with degrees of substitution (d.s.) of 1.8 and 2.7, respectively, and dodecanoate DODST2.7 (d.s. A 2.7), were prepared by esterification of native starch with fatty acid chlorides. Our analyses, including elemental analysis, FTIR, contact angle, DSC, and TGA measure- ments confirmed the esterification reaction of starch and the degree of substitution. The ester group was found to act like an internal plasticizer, with an increase in the number and the size of fatty acyl chains grafted onto starch. These starch esters were mixed with low density polyethylene (LDPE) at various proportions in a Haake Rheo- mixer. Water and moisture absorption, thermal and mechanical properties, and biodeg- radation were investigated as a function of blend composition. The DODST2.7/LDPE blends showed, in general, better thermal stability and higher elongation, but lower tensile strength and water absorption, than did corresponding OCST/LDPE blends. The addition of starch esters to LDPE led to a very slow rate of biodegradation of these blends. q 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65: 705-721, 1997
154 citations
TL;DR: In this paper, the octanoated starch (OCST) was prepared by esterification of native starch with octanoyl chloride and the new material was characterised by 1H NMR, FTIR, and elemental analysis.
128 citations
TL;DR: In this article, the industrially important alkyl aryl ethers, of which anisole is the simplest form, can be synthesized by reacting the corresponding phenols with the environmentally benign dimethyl carbonate.
58 citations
TL;DR: In this paper, it was found that OCST, even with a high degree of substitution, is biodegradable, and its biodegradation was followed in activated sludge from a waste water treatment plant.
43 citations
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TL;DR: The aim of this review is to emphasise the importance of measure as well as possible, the last stage of the biodegradation, in order to certify the integration of new materials into the biogeochemical cycles.
911 citations
TL;DR: A range of substituted starches has been prepared at moderate temperature (≤90°C) from gelatinised potato starch by treatment in lithium chloride/N,N-dimethylacetamide (DMAC) solution with acyl chlorides as discussed by the authors.
475 citations
TL;DR: In this article, a review of the performance of bioplastics materials for food packaging is presented, focusing on food packaging, and an overview of the main materials used for producing biobased films, their limitations, solutions thereof, possible applications and a state-of-the-art on bioplastic materials already used as a food packaging material.
Abstract: This review provides state of the art information on the performance of bioplastics materials, focusing on food packaging. It gives an overview of the main materials used for producing biobased films, their limitations, solutions thereof, possible applications and a state of the art on bioplastics already used as a food packaging material. Furthermore an inventory on bioplastics was made in the context of a research project. Important characteristics regarding packaging material are summarized in an extended table, which shows a big variety (e.g. permeability, tensile properties), suggesting a wide range of food products can be packed in biobased polymer films.
413 citations
TL;DR: In this article, a series of corn starch films with varying concentrations of citric acid (CA) and carboxymethyl cellulose (CMC) were produced by casting method, and the effects of CA and CMC on the water vapor permeability, moisture absorption, solubility and tensile properties were investigated.
385 citations
Journal Article•
363 citations