Research output: Contribution to journal › Article › peer-review
Discrepancy between thermodynamic and kinetic stabilities of the : Tert -butanol hydrates and its implication for obtaining pharmaceutical powders by freeze-drying. / Ogienko, A. G.; Stoporev, A. S.; Ogienko, A. A. et al.
In: Chemical Communications, Vol. 55, No. 29, 17.04.2019, p. 4262-4265.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Discrepancy between thermodynamic and kinetic stabilities of the
T2 - Tert -butanol hydrates and its implication for obtaining pharmaceutical powders by freeze-drying
AU - Ogienko, A. G.
AU - Stoporev, A. S.
AU - Ogienko, A. A.
AU - Mel'Gunov, M. S.
AU - Adamova, T. P.
AU - Yunoshev, A. S.
AU - Manakov, A. Yu
AU - Boldyreva, E. V.
N1 - Publisher Copyright: © 2019 The Royal Society of Chemistry.
PY - 2019/4/17
Y1 - 2019/4/17
N2 - The tert-butanol (TBA)-water system is studied in relation to increasing the efficiency of obtaining pharmaceutical powders by freeze-drying. Trehalose was used as a model target product. We report the X-ray diffraction and thermal analysis data which add surprising new information to the phase diagram of this previously repeatedly studied system. The freezing protocol has a strong impact on the specific surface area of the trehalose freeze-dried cakes and on the primary drying time. This is related to a discrepancy between the kinetic and thermodynamic stabilities of several TBA hydrates: di-hydrate (H1), heptahydrate (H2), and decahydrate (H3).
AB - The tert-butanol (TBA)-water system is studied in relation to increasing the efficiency of obtaining pharmaceutical powders by freeze-drying. Trehalose was used as a model target product. We report the X-ray diffraction and thermal analysis data which add surprising new information to the phase diagram of this previously repeatedly studied system. The freezing protocol has a strong impact on the specific surface area of the trehalose freeze-dried cakes and on the primary drying time. This is related to a discrepancy between the kinetic and thermodynamic stabilities of several TBA hydrates: di-hydrate (H1), heptahydrate (H2), and decahydrate (H3).
KW - Drug Stability
KW - Freeze Drying
KW - Kinetics
KW - Powders
KW - Thermodynamics
KW - tert-Butyl Alcohol/chemistry
KW - COSOLVENT SYSTEMS
KW - DESIGN
KW - BUTYL ALCOHOL
KW - ICE NUCLEATION
KW - LYOPHILIZATION
KW - QUALITY ATTRIBUTES
KW - PROCESS PERFORMANCE
KW - PHASE-DIAGRAM
UR - http://www.scopus.com/inward/record.url?scp=85064038707&partnerID=8YFLogxK
U2 - 10.1039/c9cc00397e
DO - 10.1039/c9cc00397e
M3 - Article
C2 - 30906942
AN - SCOPUS:85064038707
VL - 55
SP - 4262
EP - 4265
JO - Chemical Communications
JF - Chemical Communications
SN - 1359-7345
IS - 29
ER -
ID: 19357584