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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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Farmer, Thomas James
University of York
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2020Effects of Methyl Branching on the Properties and Performance of Furandioate-Adipate Copolyesters of Bio-Based Secondary Diolscitations
- 2019Fabrication of PES/PVP Water Filtration Membranes Using Cyrene®, a Safer Bio-Based Polar Aprotic Solventcitations
- 2019Improving the Post-polymerization Modification of Bio-Based Itaconate Unsaturated Polyesters: Catalyzing Aza-Michael Additions With Reusable Iodine on Acidic Aluminacitations
- 2018A methodical selection process for the development of ketones and esters as bio-based replacements for traditional hydrocarbon solventscitations
- 2018Post-polymerization modification of bio-based polymerscitations
- 2018Elucidating enzymatic polymerisationscitations
- 2017Wholly biomass derivable sustainable polymers by ring-opening metathesis polymerisation of monomers obtained from furfuryl alcohol and itaconic anhydridecitations
- 20172,2,5,5-Tetramethyltetrahydrofuran (TMTHF)citations
- 2017New bio-based monomers::Tuneable polyester properties using branched diols from biomasscitations
- 2017New bio-based monomers:citations
- 2016Ring opening metathesis polymerisation of a new bio-derived monomer from itaconic anhydride and furfuryl alcoholcitations
- 2015Bio-derived materials as a green route for precious & critical metal recovery and re-usecitations
Places of action
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article
Elucidating enzymatic polymerisations
Abstract
<p>The sustainable synthesis of polymers is a field with growing interest due to the need of modern society to preserve the environment whilst making used products and food sustainable for the future generations. In this work we investigate the possibility of synthesizing aliphatic polyesters derived from various dicarboxylic acid diesters and diols in a solvent-free reaction system. Candida antarctica lipase B was selected as biocatalyst and its selectivity towards the carbon and ester chain length were elucidated. The selected enzyme was able to synthesize various polyesters combining C<sub>4</sub>-C<sub>10</sub> diesters and C<sub>4</sub>-C<sub>8</sub> diols. All combinations led to monomer conversions above 90% in 24 h with the best number average molecular weights (M<sub>n</sub>) being obtained through the combination of dimethyl adipate and 1,8-octanediol leading to a M<sub>n</sub> of 7141 Da. Differential scanning calorimetry analysis shows a clear trend with an increase in melting temperature of the polymers that correlates with both the increase of the M<sub>n</sub> or of the polymer's constitutional repeat unit carbon chain length. Thermogravimetric analysis and rheology measurements performed on selected samples also confirm the trend showing a variation of the polymer's degradation temperatures and viscosity profiles.</p>