Effect of Gamma Radiation Dose on the Crystal Structure of the Ethylene–Tetrafluoroethylene Copolymer

IF 0.9 4区化学 Q4 CHEMISTRY, PHYSICAL High Energy Chemistry Pub Date : 2024-04-21 DOI:10.1134/s0018143924020140

M. Yu. Tashmetov, N. B. Ismatov, S. V. Demidov, S. R. Allayarov

引用次数: 0

Abstract

The effect of gamma radiation dose on the structure of an ethylene–tetrafluoroethylene copolymer has been studied. The copolymer powder has a triclinic crystal structure with space group P-1 and unit cell parameters of a = 8.84 Å, b = 5.34 Å, c = 4.90 Å, α = 99.11°, β = 85.84°, and γ = 90.89°. The coherent scattering region of the copolymer linearly increases from 4.3 to 6.8 nm with an increase in the absorbed gamma radiation dose to 2000 kGy. The degree of crystallinity of the copolymer decreases by 2.1% after irradiation with a dose of up to 100 kGy; after that, with an increase in the dose to 2000 kGy, the degree of crystallinity increases. The absence of significant changes in the crystal structure parameters of the copolymer after irradiation with a dose of up to 2000 kGy suggests that the copolymer crystal structure is resistant to radiation.

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伽马辐射剂量对乙烯-四氟乙烯共聚物晶体结构的影响

摘要研究了伽马辐射剂量对乙烯-四氟乙烯共聚物结构的影响。共聚物粉末具有三菱晶体结构，空间群为 P-1，单胞参数为 a = 8.84 Å，b = 5.34 Å，c = 4.90 Å，α = 99.11°，β = 85.84°，γ = 90.89°。随着吸收的伽马辐射剂量增加到 2000 kGy，共聚物的相干散射区域从 4.3 纳米线性增加到 6.8 纳米。共聚物的结晶度在辐照剂量达到 100 kGy 后降低了 2.1%；之后，随着辐照剂量增加到 2000 kGy，结晶度有所提高。共聚物的晶体结构参数在辐照剂量达到 2000 kGy 后没有发生明显变化，这表明共聚物的晶体结构具有抗辐射能力。

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来源期刊

High Energy Chemistry 化学-物理化学

CiteScore

1.50

自引率

28.60%

发文量

审稿时长

6-12 weeks

期刊介绍： High Energy Chemistry publishes original articles, reviews, and short communications on molecular and supramolecular photochemistry, photobiology, radiation chemistry, plasma chemistry, chemistry of nanosized systems, chemistry of new atoms, processes and materials for optical information systems and other areas of high energy chemistry. It publishes theoretical and experimental studies in all areas of high energy chemistry, such as the interaction of high-energy particles with matter, the nature and reactivity of short-lived species induced by the action of particle and electromagnetic radiation or hot atoms on substances in their gaseous and condensed states, and chemical processes initiated in organic and inorganic systems by high-energy radiation.