title: [Evaluation of mechanical strength of tablets from microcrystalline cellulose by means of energetic parameters].
abstract: The paper aims to describe a new method for the evaluation of mechanical strength of tablets. The classic pharmacopoeial method of measurement of strength of tablets examines the strength at which the tablet breaks, the found strength being expressed in N. The proposed method of measurement of tablet strength is based on the strength-coutse record, determined during the process of crushing. This method determines not only the crushing force (DS) in N and the radial strength (RP) in MPa calculated from it, but also other parameters, such as the course of crushing d in mm, the rate constant of crushing process in kNmm(-1), the deformation energy DE in mJ, and the volume deformation energy ODE in MJ.m3. The new parameters are illustrated on tablets from the microcrystalline cellulose Avicel PH 102.
authors.affiliation: Univerzita Karlova v Praze, Farmaceutická fakulta v Hradci Králové, Katedra farmaceutické technologie. rehula.m@email.cz
authors.forename: M
authors.initials: M
authors.lastname: Rehula
mesh_terms: D001696:Biomechanical Phenomena; D002482:Cellulose; D005079:Excipients; D013607:Tablets; D013678:Technology, Pharmaceutical
chemical_list: D005079:Excipients; D013607:Tablets; D002482:Cellulose; C109691:microcrystalline cellulose