Nanostructuring Polystyrene in a Melt

The melts of four fractions of polystyrene are investigated by the method of electric birefringence. It is found that the electro-optical properties of the melt greatly depend on the length of the polymer chain. The fractions with the highest molecular weight showed an increase in the Kerr constant...

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Bibliographic Details
Published in:Nanobiotechnology Reports (Online) 2022, Vol.17 (1), p.93-97
Main Authors: Polushin, S. G., Rogozhin, V. B., Polushina, G. E., Komolkin, A. V.
Format: Article
Language:English
Subjects:
Bioorganic
Birefringence
Chains (polymeric)
Chemistry and Materials Science
High temperature
Hybrid Nanomaterials
Industrial and Production Engineering
Machines
Manufacturing
Materials Science
Nanotechnology
Optical properties
Polymer
Polymers
Polystyrene resins
Processes
Temperature dependence
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Summary:The melts of four fractions of polystyrene are investigated by the method of electric birefringence. It is found that the electro-optical properties of the melt greatly depend on the length of the polymer chain. The fractions with the highest molecular weight showed an increase in the Kerr constant K at temperatures above 120°C. The anomalous nature of the temperature dependence of the form K ∝ T is explained by the fact that at high temperatures the flexibility of the polymer chain begins to grow rapidly. This process is called the liquid-liquid transition. As a result, the short-range orientational order increases, which is associated with a change in the mutual orientation of phenyl rings.
ISSN:2635-1676
1995-0780
2635-1684
1995-0799
DOI:10.1134/S263516762201013X