TY - T1 - Effect of headspace gas on nucleation of amorphous paracetamol SN - / UR - http://hdl.handle.net/10138/312183 T3 - A1 - Palomäki, Emmi A. K.; Yliruusi, Jouko K.; Ehlers, Henrik A2 - PB - Y1 - 2019 LA - eng AB - In this paper, the effect of the gaseous environment on recrystallization of amorphous paracetamol was investigated. The experiments were conducted with a headspace gas consisting of dry air, dry carbon dioxide, dry nitrogen and humid air in four temperatures ranging from 5 degrees C below onset of T-g to 5 degrees C above onset of T-g. The recrystallization was monitored using Raman spectroscopy and subsequent multivariate analysis. In temperatures below onset of T-g, the presence of oxygen del... VO - IS - SP - OP - KW - Amorphism; Crystallization; Nucleation; Raman spectroscopy; Sorption; Paracetamol; RAMAN-SPECTROSCOPY; SURFACE CRYSTALLIZATION; GLASS-TRANSITION; PHYSICAL STABILITY; INDOMETHACIN; DYNAMICS; MOBILITY; FORMS; STATE; WATER; 317 Pharmacy N1 - PP - ER -