Crystallization of Poly(p-oxycinnamyl) during Solution Polymerization.

Modelling Solvent-mediated Polymorphic Transitions during Cooling Solution Crystallization

Polymorphism is one of the most important issues raised by the industrial crystallization of Active Pharmaceutical Ingredients (API). The dynamic modelling of polymorphic transformations is developed using Femlab, a multiphysics simulation software, which is applied to the resolution of the Populations Balance Equations (PBE) involved. The stable and metastable distinct populations of crystals ...

Phase separation of composite materials through simultaneous polymerization and crystallization

Composite materials have attracted much interest because of the emergent properties originating from the components. A variety of methods have been studied to control the morphology of composites based on noncrystalline polymers and crystalline materials. However, it is not easy to control complex morphologies, such as segregated sea-island structures, on the submicrometer scale. Polymerization...

Reaction dynamics during the testing of polymerization catalyst

The olefins polymerization process in a slurry reactor is discussed. The reaction rate dynamics was analyzed and the contributions of feed flow, gas-liquid mass transfer, polymerization reaction, and catalyst deactivation were estimated. The propylene solubility in a solvent mixture “heptane” was calculated using Soave-Redlich-Kwong equation of state. These data were then approximated by Henry-...

Phase Separation through Simultaneous Polymerization and Crystallization for Composite Materials

FULL PAPER Pre-Nucleation Self-Assembly and Chiral Discrimination Mechanisms during Solution Crystallization of Racemic Diprophylline

The crystallization behavior of (RS)-Diprophylline (DPL) in two different solvents is investigated in order to assess the incidence of solvated pre-associations on nucleation, crystal growth and chiral discrimination. In the solvated state, Raman spectroscopy shows that dimeric associations similar to those depicted in the crystalline solid solution (ssRII) predominate in isopropyl alcohol (IPA...