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Information × Registration Number 0221U104061, 0119U102371 , R & D reports Title Influence of polydispersity and porous media on phase behavior of molecular systems popup.stage_title Head Hvozd Taras V., Кандидат фізико-математичних наук Registration Date 01-03-2021 Organization Institute of Condensed Matter Physics of the National Academy of Sciences of Ukraine popup.description2  The phase behavior and effects of fractionation of polymeric fluid models, which are represented by polydisperse hard-sphere square-well chain fluids, 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 predicted, i.e. , the larger chain molecules fractionate into the liquid phase, and smaller chain molecules fractionate into the gas phase. In second part of our studies a generalized Van der Waals approach to describe the influence of porous media on the phase behavior of polypeptide solutions have been proposed. By introducing the temperature dependence for the depth of the potential well and the geometric parameters of the spherocylinder, the main features of the phase behavior of the polypeptide poly ( γ-benzylL-glutamate) (PBLG) in a solution of dimethylformamide, including the existence of two nematic phases, is reproduced. It is shown that the presence of a porous media shifts the phase diagram to the region of lower densities and lower temperatures. Product Description popup.authors Shmotolokha Volodymyr I. popup.nrat_date 2021-03-01 Close