| 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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Markl, Daniel
University of Strathclyde
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2022Polymer pellet fabrication for accurate THz-TDS measurementscitations
- 2022Analysis of THz scattering of compacted granular materials using THz-TDScitations
- 2021Terahertz pulsed imaging as a new method for investigating the liquid transport kinetics of α-alumina powder compactscitations
- 2021Development of 3D printed rapid tooling for micro-injection mouldingcitations
- 2020Development and Validation of an in-line API Quantification Method Using AQbD Principles Based on UV-Vis Spectroscopy to Monitor and Optimise Continuous Hot Melt Extrusion Processcitations
- 2019Hot-melt extrusion process impact on polymer choice of glyburide solid dispersionscitations
- 2018Pharmaceutical-grade oral films as substrates for printed medicinecitations
- 2017On the role of API in determining porosity, pore structure and bulk modulus of the skeletal material in pharmaceutical tablets formed with MCC as sole excipientcitations
- 2017Optics-based compressibility parameter for pharmaceutical tablets obtained with the aid of the terahertz refractive indexcitations
- 2016Multi-methodological investigation of the variability of the microstructure of HPMC hard capsulescitations
- 2013Hot melt extrusion as a continuous pharmaceutical manufacturing processcitations
- 2013Supervisory control system for monitoring a pharmaceutical hot melt extrusion processcitations
Places of action
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article
Polymer pellet fabrication for accurate THz-TDS measurements
Abstract
We investigate fabrication of compacts using polytetrafluoroethylene (PTFE) and polyethylene (PE), and the effect of compaction conditions on their terahertz transmission properties. The conditions used to fabricate compressed powder samples for terahertz time-domain spectroscopy (THz-TDS) can impact the accuracy of the measurements and hence the interpretation of results. This study investigated the effect of compaction conditions on the accuracy of the THz-TDS analysis. Two polymers that are commonly used as matrix materials in terahertz spectroscopy studies were explored using a compaction simulator and a hydraulic press for sample preparation. THz-TDS was used to determine the refractive index and loss coefficient to compare the powder compacts (pellets) to the values of solid material. Sample porosity, axial relaxation and tensile strength were measured to assess the material’s suitability for terahertz spectroscopy. It was found that PTFE is the preferable material for creating THz-TDS samples due to its low porosity and high tensile strength. PE was found to show significant porosity at all compactionpressures making it an unsuitable material for the accurate determination of optical parameters from THz-TDS spectroscopy measurements. The larger particle sizes of PE resulted in compacts that exhibited significantly lower tensile strength than those made from PTFE making handling and storage difficult.