Sorption Science Webinars/Workshops Directory
Webinar: Study of particle cohesion/adhesion and wettability of powders and formulations | Prof. Williams
1079 Views •Webinar: Understanding Isotherm Shape and Isotherm Modelling from DVS Experiments | Dr. Daniel J. Burnett
1024 Views •Webinar: The Effect of Surface Properties on Granulation Performance
913 Views •Particle Engineering in Pharmaceutical Solids Processing
847 Views •Webinar: The Importance of Moisture in Pharmaceuticals and Food Materials by Surface Energy
832 Views •Webinar: Particle Engineering in Pharmaceutical Solids Processing
695 Views •Webinar: Analysis of Food Products by Dynamic Vapour Sorption
612 Views •Webinar: Surface energy analysis for measuring physicochemical properties of materials
528 Views •Webinar: The Surface Properties and Water Adsorption Behaviour of Hair Fibers
473 Views •Seminario web: Métodos experimentales para la captura de CO2 en presencia de vapor de agua
434 Views •Webinar: Polymer characterization by Vapor Sorption Methods with Dr. Daniel Burnett
232 Views •Webinar: Water Sorption and Gas Adsorption Measurements on MOFs
206 Views •Webinar: Capture of Hydrogen Sulphide and Sulphur Dioxide in MOFs
186 Views •Webinar: Battery Electrode Active Materials Characterization
8 Views •Webinar: Moisture Sorption and Drying Kinetics by DVS Analysis
4 Views •Webinar: The effect of outgassing temperature on H2O & CO2 adsorption performance of MOFs & Zeolites
4 Views •Webinar: Aqueous and Gaseous Phase Characterization of Catalysts for the Carbon Dioxide Hydration Reaction
4 Views •Webinar: BET Surface Area Measurements by Sorption Methods at Ambient Conditions
4 Views •Workshop: Sorption Science Innovations in Cellulosic Material Characterization
3 Views •Online Workshop: Application of sorption science in food research
3 Views •Webinar: Challenges on specific surface area analysis of cellulosic materials
Presented by Dr. Anett Kondor
The interaction of a solid with its surroundings is through the available surface area for adsorption of gas or vapour molecules. This also allows probing of materials surface including irregularities and pores. One of the most successful methods is based on the BET method for gas adsorption onto a solid surface. The adsorption method of Brunauer, Emmett and Teller (BET) is based on the physical adsorption of a vapour or gas onto the surface of a solid. Traditionally, sorption studies were carried out at low temperatures to obtain nitrogen isotherms at 77 K, which were then used to calculate BET surface areas. Considering that material behavior varies with temperature, measurements at ambient temperatures may be more relevant and also allow the use of various gases and vapours.
The present study is devoted to a critical investigation of the specific surface area analysis of cellulosic materials, such as freeze-dried bacterial cellulose, cellulose nano-paper and crystalline cellulose powder by gas and vapour adsorption using dynamic vapour sorption (DVS) technique, volumetric technique and inverse Gas Chromatographic (iGC) technique and the favourable case of cellulosic materials is emphasized. Inorganic materials including the specific surface area standard materials can be successfully measured with these techniques, however, the applicability of these techniques on organic materials has to be appraised.
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