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Influence of Conditions for Obtaining Polylactide-Based Materials on Their Physico-Mechanical and Rheological Characteristics
- Authors: Bakirova E.R.1, Lazdin R.Y.1, Shurshina A.S.1, Chernova V.V.1, Zakharova E.M.1, Kulish E.I.1
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Affiliations:
- Ufa University of Science and Technology
- Issue: Vol 43, No 3 (2024)
- Pages: 95-102
- Section: Chemical physics of polymeric materials
- URL: https://journal-vniispk.ru/0207-401X/article/view/263298
- DOI: https://doi.org/10.31857/S0207401X24030103
- EDN: https://elibrary.ru/VFRSXD
- ID: 263298
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Abstract
The work is devoted to the study of the influence of the conditions for obtaining materials based on the synthetic polymer polylactide on their physico-mechanical and rheological characteristics. These materials are promising for the creation of biodegradable polymer implants of temporary action to maintain the mechanical properties of broken bones during the healing period. They are designed to replace the titanium fixators currently used for these purposes, which is due not only to the need for repeated surgery to extract them, but also to the fact that the strength and modulus of elasticity of titanium fixators exceed the values of bone strength indicators by an order of magnitude, which can cause the phenomenon of bone resorption and a decrease in its strength. It has been established that with an increase in temperature in the plasticization and pressing zone, as well as with an increase in pressure in the press, there is a natural decrease in the viscosity of the polylactide melt, as well as the values of the elastic modulus and breaking stress of solid samples. Varying the cooling rate of the material during the pressing process affects the degree of its crystallinity. At the same time, the lower the cooling rate, the greater the degree of crystallinity of the polylactide and the greater the values of the elastic modulus and breaking stress.
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About the authors
E. R. Bakirova
Ufa University of Science and Technology
Author for correspondence.
Email: elina_bakirova@mail.ru
Russian Federation, Ufa
R. Yu. Lazdin
Ufa University of Science and Technology
Email: elina_bakirova@mail.ru
Russian Federation, Ufa
A. S. Shurshina
Ufa University of Science and Technology
Email: elina_bakirova@mail.ru
Russian Federation, Ufa
V. V. Chernova
Ufa University of Science and Technology
Email: elina_bakirova@mail.ru
Russian Federation, Ufa
E. M. Zakharova
Ufa University of Science and Technology
Email: elina_bakirova@mail.ru
Russian Federation, Ufa
E. I. Kulish
Ufa University of Science and Technology
Email: elina_bakirova@mail.ru
Russian Federation, Ufa
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