A systematic experimental investigation of the coupling between extensional flow and crystallization a commercial grade polypropylene is presented. modified Sentmanat device allows one to generate uniaxial in absence gravity sagging monitoring its effect on kinetics via in-situ visualization sample polarised light. As compared shear induced crystallization, three fold increase extension found. ...

We propose a disruptive method to accelerate the crystallization at low temperatures of functional metal oxide films whereby hydroxyl radicals (•OH) are photogenerated in situ from atmosphere where solution-deposited layers UV-irradiated.

We studied the composition-dependent miscibility of polyamide 6 and biobased 4,10 (PA6/PA410) blends, as triggered by crystallization driven phase segregation. The blends were prepared extrusion in a wide composition range characterized X-ray diffraction (both in-situ ex-situ SAXS/WAXS), Differential Scanning Calorimetry (DSC), Polarized Light Optical Microscopy (PLOM) during non-isothermal cry...

Intending to understand the structural basis of their activity in catalysis, amorphous Na x Ta y O z was monitored by situ X-ray diffraction and total scattering experiments during crystallization a nanocomposite natrotantite perovskite.

Flow-induced structure formation is investigated with in situ wide-angle X-ray diffraction with high acquisition rate (30 Hz) using isotactic polypropylene in a piston-driven slit flow with high wall shear rates (up to ≈900 s(-1) ). We focus on crystallization within the shear layers that form in the high shear rate regions near the walls. Remarkably, the kinetics of the crystallization process...

The effect of flow on crystallization is commonly attributed to entropic reduction, which is caused by stretch and orientation of polymer chains but overlooks the role of flow on final-state free energy. With the aid of in situ synchrotron radiation wide-angle X-ray diffraction (WAXD) and a homemade constrained uniaxial tensile testing machine, polycrystals possessing single-crystal-like orient...

In-Situ Product Removal (ISPR) technologies are being developed at the Dutch National Organization for Applied Sciences (TNO) & Delft University of Technology (TUD) to increase the yield and productivity in fermentation processes. ISPR can in principle be achieved using Template Induced Crystallization (TIC). With TIC, templates are added to the solution as a specific surface upon which the sol...

We discuss the phase behavior and in particular crystallization of a model globular protein (beta-lactoglobulin) in solution in the presence of multivalent electrolytes. It has been shown previously that negatively charged globular proteins at neutral pH in the presence of multivalent counterions undergo a ‘‘re-entrant condensation (RC)’’ phase behavior (Zhang et al., Phys. Rev. Lett., 2008, 10...

The direct crystallization of dolomite from an aqueous solution at temperatures between 60–220 °C was followed in situ through time-resolved synchrotron-based energy-dispersive X-ray diffraction combined with offline high-resolution imaging, X-ray diffraction, and infrared spectroscopy. Crystalline CaMg(CO3)2 phases form through a three-stage process. In the first stage, a nanoparticulate magne...

The self-assembly of apoferritin molecules into crystals is a suitable model for protein crystallization and aggregation; these processes underlie several biological and biomedical phenomena, as well as for protein and virus self-assembly. We use the atomic force microscope in situ, during the crystallization of apoferritin to visualize and quantify at the molecular level the processes responsi...