Effect of Small Molecular Additives on Growth Rates of Molecular Crystals from the Melt near Glass-Transition Temperature.

ABSTRACT: Frequently, small concentrations of additives can substantially modify crystal growth rates from solutions, while a substantial concentration of additives is required to likewise affect crystallization from the melt. Recently, it was discovered that even 1 wt % of polymeric additive can significantly either increase or decrease growth rates of molecular crystals depending on the differences between glass-transition temperatures T _g of host crystals and polymers [C. Huang et al., J. Phys. Chem. B 2017, 121, 1963-1971]. A similar effect is illustrated here for small-molecule additives. It is shown that the growth rate of a molecular crystal increases if the T _g of an additive is lower than that of a host crystal and growth rate decreases if t

SUBMITTER: Shtukenberg AG 

PROVIDER: S-EPMC12784327 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature