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- W2019367204 abstract "From paper [1] it follows that atactic, amorphous, “glassy” polystyrene during sorption acts as an ultra-microporous sorbent, the summary pore-volume of which is 0.03 cm3/g. Such behaviour of atactic polystyrene is tied to loosely-packed, irregular, chain construction, randomly disposed in space, as with the larger phenyl substituted compounds. From this point of view, the study of the sorptive ability of isotactic polystyrene presented great interest. The present work was devoted to an investigation of the sorption of methyl alcohol vapour on amorphous and crystalline samples of isotactic polystyrene. From the Department of High Molecular Compounds in the Moscow State University we obtained samples of isotactic polystyrene which were freed from catalyst by boiling with toluene, followed by precipitation of pure, amorphous polystyrene with methyl alcohol. Crystallization of the polystyrene was carried out by heating for 5 hours at 116° in n-octane. The molecular-weights of the samples under investigation were determined by viscometry in benzene solutions. The dissolution of crystalline polystyrene was carried out at a temperature of 60°. In the calculation of the molecular weights the equation (η)=1.13 × 10−4M0.73 was used [2]." @default.
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- W2019367204 date "1962-01-01" @default.
- W2019367204 modified "2023-09-25" @default.
- W2019367204 title "Estimation of the packing density of solid polymers—IV. Isotactic polystyrene" @default.
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- W2019367204 doi "https://doi.org/10.1016/0032-3950(62)90023-0" @default.
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