Dear Masoud,
Solid cotent is non-volatile part of polymer solutions or emulsions or in any other form in precentage,
if solvent is volatile at relatively low temprature you can measure solid content gravimetrycally
if you are referring to solid samples, it is usually the gel content which is measured. the sample is exposed to Soxhlet extraction in a good solvent of the sol fraction, followed by the drying of the non-soluble residue (gel content), the weight change gives you the sol content. You may also try to measure the solid content of the extract, but that is nt easy to do exactly.
Actually, I read that in a thesis as following:
Sol content was determined by measuring the difference in mass of dried sample before (mi) and after (mf) immersion in distilled water with agitation for 1 h. It was calculated as:
Sol content (%)= (mi-mf)/mi*100
I didn't get what he/she means clearly! I want someone to explain that to me.
Is Sol referred to solution or solid?
Dear Masoud, First yoou measure the dry weight. Then you expose the sample to good solven (in this case water). I would recommend using Soxhlet extractor instead of simple water immersion, as it is more effective. Then you dry the mass of the sample again and divide the weight change by the original weight. This gives you the sol fraction. Sol is the soluble (linear, non-crosslinked) part of the sample.
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