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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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Mcafee, Marion
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Embedding a surface acoustic wave sensor and venting into a metal additively manufactured injection mould tool for targeted temperature monitoringcitations
- 2024Sensorised metal AM injection mould tools for in-process monitoring of cooling performance with conventional and conformal cooling channel designscitations
- 2024Investigation of the effect of Graphene oxide concentration on the final properties of Aspirin loaded PLA filaments for drug delivery systems
- 2023Enhancement of biodegradability of polylactides by γ-ray irradiation
- 2023Interpretable machine learning methods for monitoring polymer degradation in extrusion of polylactic acidcitations
- 2021Comparison of data summarization and feature selection techniques for in-process spectral datacitations
- 2018A soft sensor for prediction of mechanical properties of extruded PLA sheet using an instrumented slit die and machine learning algorithmscitations
- 2014The application of computational chemistry and chemometrics to developing a method for online monitoring of polymer degradation in the manufacture of bioresorbable medical implants
- 2012Water spray cooling of polymerscitations
- 2012Dynamic grey-box modeling for online monitoring of extrusion viscositycitations
- 2011The inferential monitoring of screw load torque to predict process fluctuations in polymer extrusioncitations
- 2011The inferential monitoring of the screw disturbance torque to predict process fluctuations in polymer extrusioncitations
- 2011Internal cooling in rotational molding-A reviewcitations
- 2011Quantitative characterization of clay dispersion in polymer-clay nanocompositescitations
- 2010Quantitative characterization of clay dispersion in polypropylene-clay nanocomposites by combined transmission electron microscopy and optical microscopy
- 2010Quantitative characterization of clay dispersion in polypropylene-clay nanocomposites by combined transmission electron microscopy and optical microscopycitations
- 2010Structure-property relationships in biaxially deformed polypropylene nanocompositescitations
- 2007Enhancing process insight in polymer extrusion by grey box modellingcitations
- 2007A novel approach to dynamic modelling of polymer extrusion for improved process controlcitations
- 2007A Soft Sensor for viscosity control of polymer extrusioncitations
- 2006Energy efficient extrusion
- 2003Design of a soft sensor for polymer extrusion
Places of action
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document
Enhancement of biodegradability of polylactides by γ-ray irradiation
Abstract
<p>Polylactide, PLA (also called Polylactic acid) is an aliphatic polyester that exhibits a slow rate of biodegradation due to its non-polar nature. In this study, it is demonstrated that gamma rays enhance the biodegradability of PLA. The pristine PLA samples were irradiated by gamma rays with various doses: i.e., 25, 50, 75, and 100 kGy. These irradiated samples were analyzed by the Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), derivative thermogravimetry (DTG), and contact angle measurements to understand the functionalization of this polymer. While the FTIR analysis shows the emergence of a new band at 3400-3600 cm-1 corresponding to -OH groups in alcohols, hydroperoxides, and carboxylic acids, the TGA results exhibit a change from a single step to a two-step degradation pathways upon γ-rays irradiation which is attributable to the formation of polar -OH groups. The DSC results indicate a decrease in Tg due to the decrease in the molecular weight after γ-rays irradiation which is also consistent with the results from the gel permeation chromatography. The decrease in the contact angles of the γ-rays irradiated samples provides evidence for hydroxyl functionalization. This study shows that γ-rays irradiation enhances the biodegradability of PLA.</p>