Effect of Ozone and Ultraviolet Radiation on Structure of Fibrous Materials Based on Poly(3-hydroxybutyrate) and Polylactide

被引：6

作者：

Olkhov A.A. ^{[1
,2
,3
]}

Karpova S.G. ^{[3
]}

Tyubaeva P.M. ^{[2
,3
]}

Zhulkina A.L. ^{[1
]}

Zernova Y.N. ^{[1
]}

Iordanskii A.L. ^{[1
]}

机构：

[1] Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow

[2] Plekhanov Russian University of Economics, Moscow

[3] Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow

来源：

Inorganic Materials: Applied Research | 2020年 / 11卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

electrospinning; poly(3-hydroxybutyrate); polylactide; structure; ultrafine mixture fibers;

D O I：

10.1134/S2075113320050251

中图分类号：

学科分类号：

摘要：

Abstract: The ultrafine fibers based on mixtures of biodegradable polyesters (poly(3-hydroxybutyrate) (PHB) and polylactide (PLA)) are produced via electrospinning. The dependence of the mixed fiber structure on composition is shown by optical microscopy. Using the probe technique of electron paramagnetic resonance (EPR) and differential scanning calorimetry (DSC) methods, the structure of the crystalline and amorphous regions of the fibers is analyzed. The introduction of 10–70% of PHB into the PLA matrix leads to a sharp increase in molecular mobility, but the radical concentration in the amorphous regions decreases dramatically. The increase in the PHB concentration in the mixture over 70% results in a decrease in molecular mobility. Studies on the polymer matrix state for the first time allow one to interpret at the supramolecular level the effects of ozone and ultraviolet (UV) radiation on the structural and dynamic characteristics of PHB/PLA fibers. It is shown that the correlation time of the radical in mixtures is minimal and does not depend on the polymer ratio in the fiber and the time of exposure to ozone and UV radiation. © 2020, Pleiades Publishing, Ltd.

引用

页码：1130 / 1136

页数：6

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