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Particle Engineering in Pharmaceutical Solids: Surface Energy Considerations

Date: Wednesday, 04 November 2015

Time: 10am (GMT) & 2pm (EST) – 45 minutes duration each session

Presenter: Dr Daryl Williams (Imperial College London)

Topic: Engineers and pharmacists need to understand and control a range of key unit manufacturing operations such as milling, granulation, crystallisation, powder mixing and dry powder inhaled drugs which can be very challenging. It has now become very clear that in many of these particle processing operations, the surface energy of the starting, intermediate or final products is a key factor in understanding the processing operation and or the final product performance. This webinar will review the surface energy and surface energy heterogeneity of crystalline solids, methods for the measurement of surface energy, effects of milling on powder surface energy, adhesion and cohesion on powder mixtures, crystal habits and surface energy, surface energy and powder granulation processes.

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Online talk on Advances on Dynamic Vapor Sorption Methods and Surface Energy Characterisation

Date: Friday, 23 October 2015

Time: 11am & 2pm (GMT +2:00) – 25 minutes + Q&A (each session)

Presenter: Dr Majid Naderi (Surface Measurement Systems)

Topic: Specially designed for industry professionals and researchers in Belgium, the webinar will cover the DVS and iGC in detail, from theory to common applications in sorption science. Individuals whose studies are in the fields of pharmaceuticals, bio-pharma, food, building material, catalysts, zeolites and nano materials will gain better understanding on the uses and benefits of using DVS and IGC techniques.

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Surface Characterization of Nanomaterials by Inverse Gas Chromatography

Date: Wednesday, 07 October 2015

Time: 2pm (GMT) & 11am (EST) – 45 minutes duration each session

Presenter: Dr Dan Burnett (Surface Measurement Systems)

Topic: Surface and bulk properties are important to the successful development of nanomaterials used for real-world applications. For instance, surface energy of nanoparticles can determine initial wetting behavior (i.e. hydrophilic, hydrophobic, or amphiphilic surfaces). The quality and performance of nanocomposites depend strongly on the interaction of the components at their interface. To enhance the adhesion properties at the interface, nanomaterials are often exposed to various surface functionalization processes. Also, solvent chemical selectivity can be strongly dependent on surface energy and surface acid-base properties. For the above reasons, vapor sorption techniques like Inverse Gas Chromatography (IGC) are ideal for characterizing the surface properties of nanomaterials. IGC allows a wide range of experiment temperatures, solvents, and sample morphologies to be studied.

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The Use of Vapor Sorption Techniques to Characterize Wood Based Materials

Date: Thursday, 30 July 2015

Time: 11am (GMT), 45 minutes duration

Topic: Agricultural by-products are the ideal carbon neutral substitutes for synthetic insulation materials in building industry. Moisture is the main enemy in all forms of construction and the evaluation of solid-water interactions on these complex biopolymers is important due to their biological decomposition at high moisture environment. The rate of vapour diffusion into the material is the decisive factor in determining the rate of decomposition and behaviour of the wood based materials at different humidities and temperatures in different countries. Moisture infusion through a building’s outer structure can have a significant effect on indoor air quality increasing the risk of respiratory infections, allergic reactions, fungi and mould growth.

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