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- Title
Tracking the physical aging of poly(ethylene oxide): A technical note.
- Authors
Kiss, Dorottya; Süvegh, Karoly; Marek, Tamas; Dévényi, Laszlo; Novák, Csaba; Zelkó, Romána
- Abstract
Physical aging of 2 types of PEO could be tracked by the combination of PALS, DSC, and SEM methods. After storing the samples at 40°C±2°C and 75%±5% RH, a decrease in the o-Ps lifetime values and an increase in the melting enthalpies as a function of storage time indicated a reorientation of the polymer chains. The limitations of monitoring enthalpy relaxation confirm the importance of methods that track volume relaxation, such as PALS. Structural changes could be observed even after a short storage time (4 weeks), which highlights the effect of further investigations of the influence of physical aging on the properties of PEO-containing dosage forms.
- Publication
AAPS PharmSciTech, 2006, Vol 7, Issue 4, pE95
- ISSN
1530-9932
- Publication type
Article
- DOI
10.1208/pt070495