Zobrazeno 1 - 8
of 8
pro vyhledávání: '"B C, Hancock"'
Autor:
B C, Hancock, M, Parks
Publikováno v:
Pharmaceutical research. 17(4)
To evaluate the magnitude of the solubility advantage for amorphous pharmaceutical materials when compared to their crystalline counterparts.The thermal properties of several drugs in their amorphous and crystalline states were determined using diffe
Publikováno v:
Journal of pharmaceutical sciences. 89(3)
The molecular mobility of amorphous pharmaceutical materials is known to be a key factor in determining their stability, reactivity, and physicochemical properties. Usually such molecular mobility is quantified using relaxation time constants. Typica
Publikováno v:
Pharmaceutical research. 16(5)
To evaluate thermomechanical analysis (TMA) as a technique for determining the viscosity of amorphous pharmaceutical materials. This property of amorphous drugs and excipients is related to their average rate of molecular mobility and thus to their p
Publikováno v:
Pharmaceutical research. 15(11)
Publikováno v:
Pharmaceutical research. 15(5)
To evaluate a simple calorimetric method for estimating the fragility of amorphous pharmaceutical materials from the width of the glass transition region.The glass transition temperature regions of eleven amorphous pharmaceutical materials were chara
Publikováno v:
Pharmaceutical research. 12(6)
To measure the molecular mobility of amorphous pharmaceutical solids below their glass transition temperatures (Tg), using indomethacin, poly (vinyl pyrrolidone) (PVP) and sucrose as model compounds.Differential scanning calorimetry (DSC) was used to
Autor:
B C, Hancock, G, Zografi
Publikováno v:
Pharmaceutical research. 11(4)
The glass transition temperature of an amorphous pharmaceutical solid is a critical physical property which can dramatically influence its chemical stability, physical stability, and viscoelastic properties. Water frequently acts as a potent plastici
Autor:
B C, Hancock, G, Zografi
Publikováno v:
Pharmaceutical research. 10(9)
The limitations of traditional gas adsorption models for describing water vapor sorption by amorphous pharmaceutical solids are described and an alternative approach based on polymer solution theories is proposed. The approach is tested by comparing