Interfacial interactions and structure of polyolefins

The elucidation of structural aspects of polyolefins (isotactic and syndiotactic polypropene and isotactic poly(1-butene)) oriented by epitaxial crystallization is briefly described. Investigations are performed by a combination of electron and Atomic Force Microscopy. AFM helps assess submolecular details in well defined crystallographic planes selected via the epitaxial crystallization.     

Crystallization of Silver-Germanium Alloys under Microgravity I. Eutectic Crystallization in Hypoeutectic Alloy

The results of a study on eutectic crystallisation in the hypoeutectic alloy under different convection conditions are presented. Buoyancy driven convection was suppressed by processing the samples under microgravity conditions. The effect of convection level on the eutectic crystallisation is shown to be significant: In the absence of convection, the non-equilibrium level of the process is enhanced. The characteristic dependence of the particle size on the distance from the surface of a sample, observed on the minor phase of the eutectic, is discussed.