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Adhezivní a reologické vlastnosti směsí na bázi chitosanu v médiích různého pH
dc.contributor.advisorŠnejdrová, Eva
dc.creatorOmar, Alaa Abdel Gawad Ahmed Osman
dc.date.accessioned2021-03-26T00:42:22Z
dc.date.available2021-03-26T00:42:22Z
dc.date.issued2020
dc.identifier.urihttp://hdl.handle.net/20.500.11956/120921
dc.description.abstractTitle of thesis: Adhesive and rheological properties of chitosan-based mixtures in media of different pH Author: Alaa Omar Supervisor: PharmDr. Eva Šnejdrová, Ph.D. Consultant: Mgr. Juraj Martiška The aim of the diploma thesis is the study of rheological and adhesive properties of tableting materials for matrix tablets based on chitosan. The theoretical part describes in detail the materials used to prepare the matrix tablets, which were chitosan, sodium alginate and hypromellose. The experimental section was focused on the flow and adhesive properties of the chitosan-based mixtures after exposing them to a media of different pH. The flow tests were done on an absolute rotational rheometer. Obtained viscosity curves were analysed by Power law model. Viscosity at 10 s-1 and Power Law model coefficients were used to evaluate and compare the flow behaviour of dispersions with different concentrations of retarding component in different media. The test of adhesion was carried out using a pull away test on a rotational rheometer and evaluated as maximal detachment force. The remarkably high viscosity of 5% dispersions at pH 1.2 is due to the dissolution of chitosan, as sodium alginate is not soluble in acidic media. The increase in viscosity with the concentration of the retarding component is insured...en_US
dc.languageEnglishcs_CZ
dc.language.isoen_US
dc.publisherUniverzita Karlova, Farmaceutická fakulta v Hradci Královécs_CZ
dc.subjectbioequivalenceen_US
dc.subjectrotational testsen_US
dc.subjectoscillation testsen_US
dc.subjectrheological modelsen_US
dc.subjectyield stressen_US
dc.subjectbioekvivalencecs_CZ
dc.subjectgenerické přípravkycs_CZ
dc.subjectrotační testycs_CZ
dc.subjectoscilační testycs_CZ
dc.subjectreologické modely;cs_CZ
dc.subjectmez tokucs_CZ
dc.titleAdhesive and rheological properties of chitosan-based mixtures in media of different pHen_US
dc.typediplomová prácecs_CZ
dcterms.created2020
dcterms.dateAccepted2020-09-07
dc.description.departmentKatedra farmaceutické technologiecs_CZ
dc.description.departmentDepartment of Pharmaceutical Technologyen_US
dc.description.facultyFarmaceutická fakulta v Hradci Královécs_CZ
dc.description.facultyFaculty of Pharmacy in Hradec Královéen_US
dc.identifier.repId205835
dc.title.translatedAdhezivní a reologické vlastnosti směsí na bázi chitosanu v médiích různého pHcs_CZ
dc.contributor.refereeMužíková, Jitka
dc.identifier.aleph002383017
thesis.degree.nameMgr.
thesis.degree.levelmagisterskécs_CZ
thesis.degree.disciplinePharmacyen_US
thesis.degree.disciplineFarmaciecs_CZ
thesis.degree.programFarmaciecs_CZ
thesis.degree.programPharmacyen_US
uk.thesis.typediplomová prácecs_CZ
uk.taxonomy.organization-csFarmaceutická fakulta v Hradci Králové::Katedra farmaceutické technologiecs_CZ
uk.taxonomy.organization-enFaculty of Pharmacy in Hradec Králové::Department of Pharmaceutical Technologyen_US
uk.faculty-name.csFarmaceutická fakulta v Hradci Královécs_CZ
uk.faculty-name.enFaculty of Pharmacy in Hradec Královéen_US
uk.faculty-abbr.csFaFcs_CZ
uk.degree-discipline.csFarmaciecs_CZ
uk.degree-discipline.enPharmacyen_US
uk.degree-program.csFarmaciecs_CZ
uk.degree-program.enPharmacyen_US
thesis.grade.csVýborněcs_CZ
thesis.grade.enExcellenten_US
uk.abstract.enTitle of thesis: Adhesive and rheological properties of chitosan-based mixtures in media of different pH Author: Alaa Omar Supervisor: PharmDr. Eva Šnejdrová, Ph.D. Consultant: Mgr. Juraj Martiška The aim of the diploma thesis is the study of rheological and adhesive properties of tableting materials for matrix tablets based on chitosan. The theoretical part describes in detail the materials used to prepare the matrix tablets, which were chitosan, sodium alginate and hypromellose. The experimental section was focused on the flow and adhesive properties of the chitosan-based mixtures after exposing them to a media of different pH. The flow tests were done on an absolute rotational rheometer. Obtained viscosity curves were analysed by Power law model. Viscosity at 10 s-1 and Power Law model coefficients were used to evaluate and compare the flow behaviour of dispersions with different concentrations of retarding component in different media. The test of adhesion was carried out using a pull away test on a rotational rheometer and evaluated as maximal detachment force. The remarkably high viscosity of 5% dispersions at pH 1.2 is due to the dissolution of chitosan, as sodium alginate is not soluble in acidic media. The increase in viscosity with the concentration of the retarding component is insured...en_US
uk.file-availabilityV
uk.grantorUniverzita Karlova, Farmaceutická fakulta v Hradci Králové, Katedra farmaceutické technologiecs_CZ
thesis.grade.code1
dc.contributor.consultantMartiška, Juraj
uk.publication-placeHradec Královécs_CZ
uk.thesis.defenceStatusO


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