Nano-organization of Triblock Fluorocopolymer

Nano-organization of Triblock Fluorocopolymer

Triblock fluorocopolymer (terpolymer) is characterized by two levels of nano-organization. According to the X-ray diffraction and IR spectroscopy data, these levels of organization undergo changes induced by phase transitions. The first level of organization is formed mainly by nanostructures with s...

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Bibliographic Details
Published in:Crystallography reports Vol. 69; no. 3; pp. 423 - 430
Main Authors: Sokolova, L. V., Losev, A. V., Chrustalev, A. N., Volkov, V. V.
Format: Journal Article
Language:English
Published: Moscow Pleiades Publishing 01-06-2024
Springer Nature B.V
Subjects:
Crystallography and Scattering Methods
Heat treatment
Infrared spectroscopy
Nanomaterials and Ceramics
Nanostructure
Phase transitions
Physics
Physics and Astronomy
Terpolymers
Thermal expansion
Viscous flow
X-ray scattering
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Summary:Triblock fluorocopolymer (terpolymer) is characterized by two levels of nano-organization. According to the X-ray diffraction and IR spectroscopy data, these levels of organization undergo changes induced by phase transitions. The first level of organization is formed mainly by nanostructures with sizes of 1.5–2 nm, whereas the predominant size of nanostructures at the second level of organization is ~40 nm according to small-angle X-ray scattering data. In particular, three types of nanostructures with sizes of 1.5, 56, and 130 nm and average interplanar distances of  5.11, 3.55, and 7.14 Å, respectively, formed in the terpolymer within 20 min at 170°С, which is ~120°С higher than the viscous flow temperature of the terpolymer. An increase in the time of thermal treatment to 90 min leads to a change in the structural parameters of nanostructures mainly of the last two types. The temperature-induced changes of the thermal expansion coefficient, the rigidity, and the mechanical loss tangent of the terpolymer are determined by the specific features of the complex nano-organization of the polymer.
ISSN:1063-7745
1562-689X
DOI:10.1134/S106377452460039X