|
Determining the compression behaviour of hypromelloses.
Palounková, Zuzana ; Špaček, Vladimír (referee) ; Řehula, Milan (advisor)
The diploma work is concerned with a study of mechanical resistance which is assessed through the tablet crushing force and tensile strenght.In this work there was used tablet measuring method resulting from the recording of force - path, while the crushing process is assessed not only by crushing strenght but also by the path of crushing. Using the crushing force, crushing path and tablet crushing force is possible to compute next parameteres of crushing process detailing tablet properties as are volume crushing force, volume crushing energy and weight crushing energy. Assessed tablets were compacted of microcrystalline cellulose, hydroxypropylmethylcelulos, lactose and calcium hydrogen phosphate. From the result of work follows that crushing force (possibly tensile strenght) is decreasing in assessed adjuvants microcrystalline cellulose Ceolus, hydroxypropylmethycellulose HPMC K4, hydroxypropymethylcellulose HPMC K100, calcium hydrogen phosphate Emcompress, lactose Tablettosa respectively. Tablet breakage kinetics parameteres were decreasing with used substances in order microcrystalline cellulose Ceolus, hydroxypropymethylcellulose HPMC K100, hydroxypropylmethycellulose HPMC K4, and the lowest results were registered with lactose Tablettossa and calcium hydrogen phosphate Emcompress.
|
guest ::
