Webinar: Particle Engineering in Pharmaceutical Solids Processing
2941 Views •Seminario web: Métodos experimentales para la captura de CO2 en presencia de vapor de agua
2667 Views •Workshop: Sorption Science Innovations in Cellulosic Material Characterization
2606 Views •Webinar: Challenges on specific surface area analysis of cellulosic materials
2271 Views •Webinar: Study of particle cohesion/adhesion and wettability of powders and formulations | Prof. Williams
2248 Views •Particle Engineering in Pharmaceutical Solids Processing
1620 Views •Online Workshop: Application of sorption science in food research
1526 Views •Webinar: Understanding Isotherm Shape and Isotherm Modelling from DVS Experiments | Dr. Daniel J. Burnett
1276 Views •Webinar: The Effect of Surface Properties on Granulation Performance
1224 Views •Webinar: The Importance of Moisture in Pharmaceuticals and Food Materials by Surface Energy
1091 Views •Webinar: Surface energy analysis for measuring physicochemical properties of materials
837 Views •Webinar: Analysis of Food Products by Dynamic Vapour Sorption
793 Views •Webinar: The Surface Properties and Water Adsorption Behaviour of Hair Fibers
719 Views •Webinar: Polymer characterization by Vapor Sorption Methods with Dr. Daniel Burnett
466 Views •Webinar: Capture of Hydrogen Sulphide and Sulphur Dioxide in MOFs
395 Views •Webinar: Water Sorption and Gas Adsorption Measurements on MOFs
384 Views •Dynamic Vapor Sorption (DVS) Applications for Amorphous Content Calculations & in situ Raman studies
300 Views •Webinar: Experimental Methods for Determining Carbon Dioxide Capture in the Presence of Water Vapor
280 Views •Webinar: Battery Electrode Active Materials Characterization
262 Views •Workshop: Characterizing Construction Materials by Vapor Sorption Techniques
243 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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