Synthesis of Cellulose Fatty Esters as Plastics—Influence of the Degree of Substitution and the Fatty Chain Length on Mechanical Properties

Authors

  • Lucie Crépy,

    1. I.U.T. de Béthune, Département Chimie, Unité de Catalyse et de Chimie du Solide, site de l'Artois – UMR CNRS 8181, 1230 rue de l'Université, 62408 Béthune cedex (France), Fax: (+33) 321-630294
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  • Ludovic Chaveriat Dr.,

    1. I.U.T. de Béthune, Département Chimie, Unité de Catalyse et de Chimie du Solide, site de l'Artois – UMR CNRS 8181, 1230 rue de l'Université, 62408 Béthune cedex (France), Fax: (+33) 321-630294
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  • Joseph Banoub Prof.,

    1. Fisheries and Oceans Canada, Science Branch, Special Projects, P.O. Box 5667, St John's, Newfoundland, A1C5X1 (Canada)
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  • Patrick Martin Prof.,

    1. I.U.T. de Béthune, Département Chimie, Unité de Catalyse et de Chimie du Solide, site de l'Artois – UMR CNRS 8181, 1230 rue de l'Université, 62408 Béthune cedex (France), Fax: (+33) 321-630294
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  • Nicolas Joly Dr.

    1. I.U.T. de Béthune, Département Chimie, Unité de Catalyse et de Chimie du Solide, site de l'Artois – UMR CNRS 8181, 1230 rue de l'Université, 62408 Béthune cedex (France), Fax: (+33) 321-630294
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Abstract

Alternative films: The effect of the chain length and the degree of substitution on the mechanical and hydrophobic properties of various cellulose fatty ester plastic films was studied. The results suggest that the cellulose ester plastic films are promising alternatives to petrochemical commodity plastics such as polyethylene.

original image

Cellulose-based plastic films were prepared by acylating cellulose in homogeneous media under microwave irradiation with fatty acyl chlorides containing either saturated or unsaturated chains of various lengths (C12 to C18). The resultant cellulose esters were analysed by FTIR and1H NMR spectroscopy to confirm their structure and to determine their degree of substitution. Some of the cellulose fatty esters were then converted into polymer films by casting. The mechanical properties of these films were determined, including their elastic modulus, tensile strength and tensile strain level. The hydrophobicity of the polymer films was determined by contact angle measurement with water. The mechanical and hydrophobic properties of the plastic films were then compared to those of commodity plastics.

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