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Information × Registration Number 0220U101241, 0119U102371 , R & D reports Title Influence of polydispersity and porous media on phase behavior of molecular systems popup.stage_title Head Hvozd Taras V., Registration Date 05-01-2020 Organization Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine popup.description2  Effects of polydispersity on the phase behavior of polymeric fluid model, which is represented by polydisperse hard-sphere square-well chain fluid, have been studied. Polydispersity causes increase of the region of phase coexistence due to the critical temperature increase. The increase of the average chain length at fixed value of polydispersity shifts the critical point to a higher temperature and a slightly lower density. Fractoination effects in coexisting phases also have been studied, i.e. , the larger molecules fractionate into the liquid phase, and smaller molecules fractionate into the gas phase. In second part of our studies a generalized Van der Waals approach is developed for anisotropic fuids in disordered porous media. Strong influence of the type of interparticle attraction on the phase behaviour of anisotropic fuids in disordered porius media is established. Three simple models for this aim are considered, namely the model with the Lennard-Jones anisotropic attraction, the model with a modified Lennard-Jones attraction and the model with an anisotropic square-well potential. For all considered models, the phase diagram shifts to the region of lower densities and lower temperatures as the porosity is decreased. Product Description popup.authors Shmotolokha Volodymyr I. popup.nrat_date 2020-04-02 Close