Renewable Photopolymer Films Derived From Low‐Grade Lampante and Pomace Olive Oils
| Autor: | Noureddine Allouche, Mohamed Ayadi, Abraham Chemtob, Khaled Bouaziz |
|---|---|
| Přispěvatelé: | Université de Sfax - University of Sfax, Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA) |
| Rok vydání: | 2017 |
| Předmět: |
Chemistry
Pomace Infrared spectroscopy 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 7. Clean energy 01 natural sciences Industrial and Manufacturing Engineering 12. Responsible consumption 0104 chemical sciences [CHIM.POLY]Chemical Sciences/Polymers Vegetable oil Photopolymer Polymerization Copolymer Organic chemistry Fourier transform infrared spectroscopy 0210 nano-technology Photoinitiator Food Science Biotechnology |
| Zdroj: | European Journal of Lipid Science and Technology European Journal of Lipid Science and Technology, Wiley-VCH Verlag, 2017, Euro Fed Lipid Highlights 2017, 119 (12), pp.1700003. ⟨10.1002/ejlt.201700003⟩ |
| ISSN: | 1438-9312 1438-7697 |
| DOI: | 10.1002/ejlt.201700003 |
| Popis: | International audience; Thiol‐ene photoinduced copolymerization between a polythiol cross‐linker and low‐grade unsaturated olive oil provides an eco‐efficient route to dry, flexible, and rubbery films in the matter of minutes. The synthetic methodology uses low cost olive oils resulting from non‐edible grades (lampante olive oil) and waste production (pomace olive oil) without prior chemical modification. The resultant photopolymer thioether cross‐linked films contain up to 80–85% of renewable resources, and UV‐driven drying proceeds despite the limited unsaturations’ concentration. Photopolymerization is triggered with a conventional medium‐pressure mercury arc in presence of three different thiol cross‐linkers: 2,2′‐(ethylenedioxy)diethanethiol, hexanedithiol or trimethylolpropanetris(3‐mercaptopropionate) and a radical photoinitiator (2‐hydroxy 2‐methylpropiophenone). Using real‐time Fourier transform infrared spectroscopy (RT‐FTIR), we show that cross‐linking proceeds essentially via a step‐growth thiol‐ene polymerization, and to a minor extent, by a conventional photo‐oxidation mechanism. Practical Applications: Olive oil is the second largest produced vegetable oil, and in 2016 world production amounted to 3.5 million tons. An excess of low‐grade pomace and lampante olive oils is generated annually from the conventional extraction process; however, declared unfit for human consumption, they have a limited number of uses, and it is difficult to find new outlets. Despite this excess, the development of synthetic and processing methods to convert these non‐edible olive oils in useful materials has not been investigated widely. Here we report a method based on thiol‐ene photopolymerization to prepare a new range of UV‐curable films. Using time‐resolved infrared spectroscopy, this study sheds light into reaction kinetics and polymerization mechanism. |
| Databáze: | OpenAIRE |
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