Moisture uptake of polyoxyethylene glycol glycerides used as matrices for drug delivery: Kinetic modelling and practical implications

Qi, Sheng, Belton, Peter, McAuley, William, Codoni, Doroty and Darji, Neerav (2013) Moisture uptake of polyoxyethylene glycol glycerides used as matrices for drug delivery: Kinetic modelling and practical implications. Pharmaceutical Research, 30 (4). pp. 1123-1136. ISSN 0724-8741

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Abstract

Purpose: Gelucire 50/13, a polyoxyethylene glycol glyceride mixture, has been widely used in drug delivery, but its moisture uptake behaviour is still poorly understood. In this study, the effects of relative humidity, temperature, and drug incorporation on the moisture uptake of Gelucire are reported in relation to their practical implications for preparation of solid dispersions using this material. Methods: DVS combined with kinetics modelling was used as the main experimental method to study the moisture uptake behaviour of Gelucire. Thermal and microscopic methods were employed to investigate the effect of moisture uptake on the physical properties of the material and drug loaded solid dispersions. Results: The moisture uptake by Gelucire 50/13 is temperature and relative humidity dependent. At low temperatures and low relative humidities, moisture sorption follows a GAB model. The model fitting indicated that at high relative humidities the sorption is a complex process, potentially involving PEG being dissolved and the PEG solution acting as solvent to dissolve other components. Conclusion: Careful control of the storage and processing environmental conditions are required when using Gelucire 50/13. The incorporation of model drugs not only influences the moisture uptake capacity of Gelucire 50/13 but also the solidification behaviour.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Pharmacy (former - to 2024) Faculty of Science > School of Chemistry (former - to 2024)
UEA Research Groups:	Faculty of Science > Research Groups > Drug Delivery and Pharmaceutical Materials (former - to 2017) Faculty of Science > Research Groups > Biophysical Chemistry (former - to 2017) Faculty of Science > Research Groups > Pharmaceutical Materials and Soft Matter
Depositing User:	Users 2731 not found.
Date Deposited:	15 Mar 2013 12:26
Last Modified:	28 Mar 2025 02:29
URI:	https://ueaeprints.uea.ac.uk/id/eprint/41932
DOI:	10.1007/s11095-012-0948-5

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