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This article is cited in 1 scientific paper (total in 1 paper)
Solids
Impact of ultraviolet irradiation on stress–strain behavior of syndiotactic 1,2-polybutadien: the role of oxidation
Yu. A. Lebedeva, R. R. Kinzyabulatova, V. V. Astaninb, D. V. Gunderovab a Institute of Molecule and Crystal Physics, Ufa Federal Research Centre, Russian Academy of Sciences
b Ufa State Aviation Technical University
Abstract:
We studied the impact of ultraviolet (UV) irradiation on stress–strain characteristics, derived from uniaxial stretching measurements, and the molecular structure (photoinduced changes) of syndiotactic 1,2-polybutadien, a polymer with thermoplastic elastomer properties. Uniaxial stretching stress–strain curves are recorded for samples subjected to UV irradiation for different times and the effects UV irradiation has on the stress–strain behavior of polymers are analyzed. Long UV irradiation is found to markedly increase the hardening of polymers: Young's modulus and yield strength increase, while the fracture strain decreases. At the same time, we observe a sharp increase in polymer molecular weight and its considerable oxidation that particularly involves surface layers. The mechanisms of cross-linking between macromolecules and their simultaneous oxidation induced by exposure to UV light are discussed along with the role these processes play in evolution of the physical mechanical properties under UV irradiation.
Received: 28.04.2018
Citation:
Yu. A. Lebedev, R. R. Kinzyabulatov, V. V. Astanin, D. V. Gunderov, “Impact of ultraviolet irradiation on stress–strain behavior of syndiotactic 1,2-polybutadien: the role of oxidation”, Zhurnal Tekhnicheskoi Fiziki, 89:4 (2019), 518–523; Tech. Phys., 64:4 (2019), 475–479
Linking options:
https://www.mathnet.ru/eng/jtf5636 https://www.mathnet.ru/eng/jtf/v89/i4/p518
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