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Full-Text Articles in Chemistry
Study Of Drug Delivery Behavior Through Biomembranes Using Thermal And Bioanalytical Techniques, Hareesha Reddy Venumuddala
Study Of Drug Delivery Behavior Through Biomembranes Using Thermal And Bioanalytical Techniques, Hareesha Reddy Venumuddala
ETD Archive
This Master of Science thesis encompasses two projects in chemical pharmaceuticals. The first is a study of excipients and the added new information collected beyond Thermal Gravimetric Analysis and Differential Scanning Calorimetry from Dielectric Analysis. These new properties enhance our global knowledge of excipients by thermal analytical methods. Excipients, the inactive ingredients in formulated drugs, aid different functions of the active pharmacy ingredient, the drugs. Low temperature transitions, by DEA including melting of frozen solvents, e.g. water, are more definitive than observed by low temperature DSC. Millions of dollars are expended annually on pharmaceutical testing to qualify excipients for fully …
Disintegration Of Tablets And Capsules Measured By Isothermal Thermal Mechanical Analysis And Macrophotography, Visweswararao Badipatla
Disintegration Of Tablets And Capsules Measured By Isothermal Thermal Mechanical Analysis And Macrophotography, Visweswararao Badipatla
ETD Archive
The current United States Pharmacopoeia (USP) test for tablet and encapsulated drug disintegration does not specify the initial disintegration time and provides limited information on the disintegration process itself. An isothermal Thermal Mechanical Analysis (IsoTMA) method is presented to measure the rate and initial time of drug disintegration, that is, the mechanical collapse of the gelatin capsule or the solid tablet. This method monitors changes in the dimensions of the formulated drugs during their disintegration in a liquid. Dimensional changes can be followed as a function of time, temperature, applied stress and pH. Some of the drugs studied were Olanzapine®, …