| 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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Rantanen, Jukka
University of Copenhagen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (43/43 displayed)
- 2024Leucine as a Moisture-Protective Excipient in Spray-Dried Protein/Trehalose Formulationcitations
- 2024Compaction behavior of freeze-dried and spray-dried trypsin/lactose particulate systems
- 2023Co-administration of Intravenous Drugscitations
- 2023Coating of Primary Powder Particles Improves the Quality of Binder Jetting 3D Printed Oral Solid Productscitations
- 2022Structured approach for designing drug-loaded solid products by binder jetting 3D printingcitations
- 2021Enabling formulations of aprepitantcitations
- 2020Fabrication of Mucoadhesive Buccal Films for Local Administration of Ketoprofen and Lidocaine Hydrochloride by Combining Fused Deposition Modeling and Inkjet Printingcitations
- 2020Exploring the Complexity of Processing-Induced Dehydration during Hot Melt Extrusion Using In-Line Raman Spectroscopycitations
- 2019Determining Thermal Conductivity of Small Molecule Amorphous Drugs with Modulated Differential Scanning Calorimetry and Vacuum Molding Sample Preparationcitations
- 2019Exploring the chemical space for freeze-drying excipientscitations
- 2019Roadmap to 3D printed oral pharmaceutical dosage formscitations
- 2018The use of molecular descriptors in the development of co-amorphous formulationscitations
- 2017Investigation of nanocarriers and excipients for preparation of nanoembedded microparticlescitations
- 2017Correlation between calculated molecular descriptors of excipient amino acids and experimentally observed thermal stability of lysozymecitations
- 2017The flow properties and presence of crystals in drug-polymer mixturescitations
- 2017The effect of poly (lactic-co-glycolic) acid composition on the mechanical properties of electrospun fibrous matscitations
- 2017The effect of poly (lactic-co-glycolic) acid composition on the mechanical properties of electrospun fibrous matscitations
- 2016Oscillatory Shear Rheology in Examining the Drug-Polymer Interactions Relevant in Hot Melt Extrusioncitations
- 2016Properties of the Sodium Naproxen-Lactose-Tetrahydrate Co-Crystal upon Processing and Storagecitations
- 2015Three-Dimensional Printing of Drug-Eluting Implantscitations
- 2015Well-plate freeze-dryingcitations
- 2015Rheology as a tool for evaluation of melt processability of innovative dosage formscitations
- 2014Evaluation of ring shear testing as a characterization method for powder flow in small-scale powder processing equipmentcitations
- 2014Near-Infrared Imaging for High-Throughput Screening of Moisture-Induced Changes in Freeze-Dried Formulationscitations
- 2013A step toward development of printable dosage forms for poorly soluble drugscitations
- 2013Interpreting the Disordered Crystal Structure of Sodium Naproxen Tetrahydratecitations
- 2013Designing CAF-adjuvanted dry powder vaccinescitations
- 2013Investigation of the phase separation of PNIPAM using infrared spectroscopy together with multivariate data analysiscitations
- 2013Fast-track to a solid dispersion formulation using multi-way analysis of complex interactionscitations
- 2013Foreign matter identification from solid dosage formscitations
- 2013Exploring the solid-form landscape of pharmaceutical hydratescitations
- 2012Complementing high-throughput X-ray powder diffraction data with quantum-chemical calculationscitations
- 2012Crystal morphology modification by the addition of tailor-made stereocontrolled poly(N-isopropyl acrylamide)citations
- 2012Atomic pairwise distribution function analysis of the amorphous phase prepared by different manufacturing routescitations
- 2011Assessment of crystalline disorder in cryo-milled samples of indomethacin using atomic pair-wise distribution functionscitations
- 2006Understanding processing-induced phase transformations in erythromycin-PEG 6000 solid dispersionscitations
- 2005Physical changes of beta-sitosterol crystals in oily suspensions during heatingcitations
- 2005IR spectroscopy together with multivariate data analysis as a process analytical tool for in-line monitoring of crystallization process and solid-state analysis of crystalline productcitations
- 2005Pellet manufacturing by extrusion-spheronization using process analytical technologycitations
- 2005Characterization of polymorphic solid-state changes using variable temperature X-ray powder diffractioncitations
- 2004Role of excipients in hydrate formation kinetics of theophylline in wet masses studied by near-infrared spectroscopycitations
- 2003Dehydration studies using a novel multichamber microscale fluid bed dryer with in-line near-infrared measurementcitations
- 2002Hydrate formation during wet granulation studied by spectroscopic methods and multivariate analysis
Places of action
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article
Assessment of crystalline disorder in cryo-milled samples of indomethacin using atomic pair-wise distribution functions
Abstract
The aim of this study was to investigate the usefulness of the atomic pair-wise distribution function (PDF) to detect the extension of disorder/amorphousness induced into a crystalline drug using a cryo-milling technique, and to determine the optimal milling times to achieve amorphisation. The PDF analysis was performed on samples of indomethacin obtained by cryogenic ball milling (cryo-milling) for different periods of time. X-ray powder diffraction (XRPD), differential scanning calorimetry (DSC), polarised light microscopy (PLM) and solid state nuclear magnetic resonances (ss-NMR) were also used to analyse the cryo-milled samples. The high similarity between the ¿-indomethacin cryogenic ball milled samples and the crude ¿-indomethacin indicated that milled samples retained residual order of the ¿-form. The PDF analysis encompassed the capability of achieving a correlation with the physical properties determined from DSC, ss-NMR and stability experiments. Multivariate data analysis (MVDA) was used to visualize the differences in the PDF and XRPD data. The MVDA approach revealed that PDF is more efficient in assessing the introduced degree of disorder in ¿-indomethacin after cryo-milling than MVDA of the corresponding XRPD diffractograms. The PDF analysis was able to determine the optimal cryo-milling time that facilitated the highest degree of disorder in the samples. Therefore, it is concluded that the PDF technique may be used as a complementary tool to other solid state methods and that further investigations are warranted to elucidate the capabilities of this technique.