Blends of cross-linked high amylose starch/pectin loaded with diclofenac
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Elsevier
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Polymers blends represent an important approach to obtain materials with modulated properties to reach different and desired properties in designing drug delivery systems in order to fulfill therapeutic needs. The aim of this work was to evaluate the influence of drug loading and polymer ratio on the physicochemical properties of microparticles of cross-linked high amylose starch-pectin blends loaded with diclofenac for further application in controlled drug delivery systems. Thermal analysis and X-ray diffractograms evidenced the occurrence of drug-polymer interactions and the former pointed also to an increase in thermal stability due to drug loading. The rheological properties demonstrated that drug loading resulted in formation of weaker gels while the increase of pectin ratio contributes to origin stronger structures. © 2012 Elsevier Ltd.
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High amylose starch Pectin Polymer blends Rheology Thermal analysis X-ray diffraction Controlled drug delivery systems Diclofenac Drug delivery system Drug loading Drug-polymer interaction High amylose Micro-particles Physicochemical property Rheological property X-ray diffractograms Controlled drug delivery Crosslinking Functional polymers Materials properties Starch Thermoanalysis X ray diffraction Loading amylose diclofenac drug carrier microsphere pectin chemistry flow kinetics particle size temperature Amylose Drug Carriers Microspheres Particle Size Pectins Temperature
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Carbohydrate Polymers, v. 91, n. 1, p. 135-142, 2013.
