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Bio & Natural Materials

Many natural materials are hydrophilic and have very strong affinity for moisture

Bio and natural materials tend to be hydrophilic in their chemical nature, thus containing significant amounts of water. They are thus very susceptible to humidity in the environment, and very low or indeed very high humidities can be detrimental to their performance. For example proteins can de-nature at low humidities whist the mechanical properties of biopolymers are significantly reduced at high humidities.

Drying
The moisture sorption properties of many solid state materials, especially organic materials are critical for the characterisation of their drying and shelf life stability. In the past 10 years the DVS method invented by Surface Measurement Systems has become the standard laboratory method for studying drying and dehydration behaviour.

pdficon_small Application Note 02: Moisture Sorption of EC Standard Reference Material RM 302 on a DVS-1 Instrument

Application Note 55: Measurement of Moisture Uptake Capacity in Human Hair Using Dynamic Vapour Sorption Technique
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Particle adhesion
Glass transition temperature
Moisture diffusion and permeability
Water sorption isotherms

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