THz Imaging of Roll Compaction for Pharmaceutical Applications
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Typ
Examensarbete för masterexamen
Master Thesis
Master Thesis
Program
Wireless, photonics and space engineering (MPWPS), MSc
Publicerad
2016
Författare
Garcia Wernersson, Joakim
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
In the pharmaceutical industry, dry granulation is an intermediate state in the tablet manufacturing process for orally administered products. Powder blends with poor flowing properties are compressed and milled producing a granular material with increased flow properties. A key element in the process is the density of the compressed powder since it will affect the final quality of the manufactured tablet.The existing density measurement system employed by AstraZeneca is a destructive measurement. This thesis shows a method for non-destructive density measurements using a terahertz imaging system. A model of the relation between the phase of the THz transmitted signal versus the permittivity of the sample was obtained through fullwave simulations using CST Microwave Studio. By determining the permittivity of samples with known density, a material specific model of how the permittivity varies with density was obtained. The presented density control method has significantly decreased the measurement time by a factor of 2 and it is also capable of measuring the density over a 20 times smaller area of the sample compared with the method currently used at AstraZeneca.
Beskrivning
Ämne/nyckelord
Informations- och kommunikationsteknik , Livsvetenskaper , Hållbar utveckling , Övrig elektroteknik, elektronik och fotonik , Bioteknisk apparatteknik , Information & Communication Technology , Life Science , Sustainable Development , Other electrical engineering, electronics and photonics , Bioengineering Equipment