| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sebakhy, Khaled O.
Ghent University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2024Surfactant-Free Peroxidase-Mediated Enzymatic Polymerization of a Biorenewable Butyrolactone Monomer via a Green Approach:Synthesis of Sustainable Biobased Latexescitations
- 2023A green/sustainable organocatalytic pathway for the preparation of esterified supercritical<scp>CO<sub>2</sub></scp>‐dried potato starch productscitations
- 2023A green/sustainable organocatalytic pathway for the preparation of esterified supercritical CO 2 -dried potato starch productscitations
- 2022RAFT Polymerization of a Biorenewable/Sustainable Monomer via a Green Processcitations
- 2022Initiated Chemical Vapor Deposition (iCVD) of Bio-Based Poly(tulipalin A) Coatings:Structure and Material Propertiescitations
- 2021Adsorption of Algerian Asphaltenes onto Synthesized Maghemite Iron Oxide Nanoparticlescitations
Places of action
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article
A green/sustainable organocatalytic pathway for the preparation of esterified supercritical<scp>CO<sub>2</sub></scp>‐dried potato starch products
Abstract
<jats:title>Abstract</jats:title><jats:p>Production of renewable and modified starch‐based products was achieved using a sustainable catalyst and an environmentally friendly drying process via supercritical CO<jats:sub>2</jats:sub>. Potato starch was modified via a sustainable and green esterification process with acetic anhydride reagent implementing a novel organocatalytic pathway at different periods of time (0.5, 3 and 7 h) by applying an esterification reaction at 120°C targeting intermediate degrees of substitution (i.e., 0.2 < DS <1.5) finding potential applications as polymer packaging materials. The final modified samples were divided into two fractions, where the first fraction was dried under vacuum at 80° C for 24 h and the second fraction was dried under supercritical CO<jats:sub>2</jats:sub>at 40° C and 100 bars for 2 h. The final products were analyzed using an array of characterization techniques such as Fourier transform infrared (FTIR), Proton nuclear magnetic resonance (<jats:sup>1</jats:sup>H‐NMR), scanning electron microscopy (SEM), X‐ray diffraction (XRD), N<jats:sub>2</jats:sub>physisorption, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and Karl Fischer. The chemical structure of both fractions was similar as confirmed by the different characterization techniques. Drying under supercritical CO<jats:sub>2</jats:sub>preserved some pores in the modified starch materials as opposed to thermal oven drying, as was confirmed by N<jats:sub>2</jats:sub>physisorption measurements. The degree of substitution (DS) was determined using three different techniques; titration, high performance liquid chromatography (HPLC) and solution state proton nuclear magnetic resonance (<jats:sup>1</jats:sup>H NMR) spectroscopy and the values were greater than 0.2 and less than 1.5 indicating intermediate degrees of substitution.</jats:p>