Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Chemistry
Novel Solid State Properties Of Drugs, Polymers And Various Chemicals By Thermal And Analytical Techniques, Dhruthiman R. Mantheni
Novel Solid State Properties Of Drugs, Polymers And Various Chemicals By Thermal And Analytical Techniques, Dhruthiman R. Mantheni
ETD Archive
I have observed unique variations in AC electrical conductivity of solids by dielectric analysis (DEA or DETA) when studied with respect to temperature and frequency. A wide range of solids were examined for this study e.g. organics, polymers, carbohydrates, API's (active pharmacy ingredients) and amino acids. Experimental results clearly show novel dielectric behavior of a linear increase in a log ionic conductivity vs. temperature in the pre-melt (20 to 30oC below the melt temperature) and melt transition regions. We have differentiated the solids which show the conductivity variations in pre-melt from those which do not e.g. pre-melt conductivity variations observed …