Hello,
I have been reading a lot about moisture sorption in plasticized starch films. One question I had is how to report water content based on the literature. Literature such as Talja, et al (doi:10.1016/j.carbpol.2006.05.019 ) presents water content as g water/100g solids
Does this "solids" include the mass of the plasticizer (they compare moisture sorption for different plasticizer contents) or just the amount of starch in the dry film. Need to better understand in terms of the overall water content, because if two films with different amounts of plasticizer had 10gwater/100gsolids, the overall % water would be different if the plasticizer was included or not in the "solids". Just trying to understand a bit better.
Kindly check this RG publication
Analysis of water binding in starch plasticized films https://www.researchgate.net/publication/222329486_Analysis_of_water_binding_in_starch_plasticized_films
Also check https://www.hindawi.com/journals/jnm/2019/3843949/
Dear all, different techniques are in use. Karl-Fischer is the classical way to measure water content. Please check the following documents. My Regards
https://doi.org/10.1016/S0260-8774(00)00073-X
https://www.researchgate.net/publication/276906468_Evaluation_of_the_moisture_content_of_tapioca_starch_using_near-infrared_spectroscopy
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