Crystallization kinetics under confinement. Manipulation of the crystalline form of salol by varying pore diameter
PBN-AR
Instytucja
Wydział Matematyki, Fizyki i Chemii (Uniwersytet Śląski w Katowicach)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
CRYSTAL GROWTH & DESIGN
ISSN
1528-7483
EISSN
Wydawca
AMER CHEMICAL SOC
DOI
URL
Rok publikacji
2016
Numer zeszytu
3
Strony od-do
1218-1227
Numer tomu
16
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Pozostali autorzy
+ 2
Streszczenia
Język
angielski
Treść
The crystallization and melting behavior of phenyl salicylate under confinement were studied by means of dielectric spectroscopy (BDS) and differential scanning calorimetry (DSC). From the analysis of the kinetics of crystallization we established that crystals formed in bulk and under confinement are characterized by varying the rate of growth, dimensionality, and crystal lattice. It was shown that depending on the degree of confinement the crystallization can be accelerated or suppressed completely. Interestingly, we also found that the activation barrier for the crystallization either increases or decreases with respect to the bulk conditions. Further investigation of the melting temperature of the formed crystals indicated unequivocally that it is connected to the formation of different polymorphic forms of salol. Additional FTIR measurements confirmed that thesis. Based on calorimetric data obtained for the confined samples, we concluded that at pores of higher diameter the unstable (monoclinic) form is preferred, while at lower pores the original stable (orthorhombic) crystal is formed.
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Inne
System-identifier
0192700124281
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