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Browsing Química by Author "Aponza Narváez, Diana Marcela"
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Item Evaluación de las alteraciones térmicas en el estado de mezcla sólido entre diferentes materiales poliméricos y Farmácos de clasificación biofarmacéutica I y II, por medio de la calorimetria de barrido diferencial (DSC) y FT-IR(Universidad Santiago de Cali, 2019) Cardona Gómez, Juan David; Aponza Narváez, Diana Marcela; Castillo, Jorge Enrique (Director)In the present study, the potential of using polymeric materials with drugs as useful raw materials in the development of delivery systems was evaluated, Thermal analysis and spectroscopy techniques were used to evaluate the compatibility of Metoprolol (MTP), a biopharmaceutical classification I drug, and Carbamazepine (CBZ), a biopharmaceutical classification II drug, with polymeric materials commonly used in the pharmaceutical industry such as Hydroxypropylmethylcellulose (HPMC) and Xanthan Gum; copolymeric materials derived from maleic anhydride corresponding to the sodium salt of poly (maleic acid-alt-ethylene) called PAM-ONa and the sodium salt of poly (maleic acid-alt-octadecene) called PAM-18Na were also used Mixtures were prepared in proportions of 10, 20, 30, and 40 percent, weight-to-weight (% w/w), in drug-to-polymer ratios. Each material, individually and under mixture, was subjected to thermal characterization by Scanning Calorimetry. Blends were prepared in proportions of 10, 20, 30, and 40 percent, weight-to-weight (% w/w), drug/polymer ratio. Each material, individually and under mixture, was subjected to thermal characterization by Differential Scanning Calorimetry (DSC) and FT-IR Infrared Spectroscopy (Smart ITR). The results of the FT-IR study showed that the blend systems of CBZ and MTP at 10 and 40% with the reference polymers did not exhibit any interactions, while for PAM-0Na and PAM-18Na, new signals were presented respectively at the C-H group stretching 2980-2800 cm'' of these polymers, mainly for the blend systems with PAM-18Na; however, in the thermal analysis by DSC, interactions were observed in the MTP blend systems mainly with PAM-18Na