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Article

Aggressive Impacts Affecting the Biodegradable Ultrathin Fibers Based on Poly(3-Hydroxybutyrate), Polylactide and Their Blends: Water Sorption, Hydrolysis and Ozonolysis

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Department of Chemistry and Physics, Plekhanov Russian University of Economics, Stremyanny Ln 36, 117997 Moscow, Russia
2
N.M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygin St. 4, 119991 Moscow, Russia
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N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Kosygin St. 4, 119334 Moscow, Russia
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Nanotechnology Scientific and Educational Center, Institute of Biochemical Technology and Nanotechnology, Peoples’ Friendship University of Russia (RUDN), Miklukho-Maklaya St. 6, 117198 Moscow, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Andrea Ehrmann
Polymers 2021, 13(6), 941; https://doi.org/10.3390/polym13060941
Received: 27 February 2021 / Revised: 12 March 2021 / Accepted: 14 March 2021 / Published: 18 March 2021
(This article belongs to the Collection Polymers for Controlled Drug Release)
Ultrathin electrospun fibers of pristine biopolyesters, poly(3-hydroxybutyrate) (PHB) and polylactic acid (PLA), as well as their blends, have been obtained and then explored after exposure to hydrolytic (phosphate buffer) and oxidative (ozone) media. All the fibers were obtained from a co-solvent, chloroform, by solution-mode electrospinning. The structure, morphology, and segmental dynamic behavior of the fibers have been determined by optical microscopy, SEM, ESR, and others. The isotherms of water absorption have been obtained and the deviation from linearity (the Henry low) was analyzed by the simplified model. For PHB-PLA fibers, the loss weight increments as the reaction on hydrolysis are symbate to water absorption capacity. It was shown that the ozonolysis of blend fibrils has a two-stage character which is typical for O3 consumption, namely, the pendant group’s oxidation and the autodegradation of polymer molecules with chain rupturing. The first stage of ozonolysis has a quasi-zero-order reaction. A subsequent second reaction stage comprising the back-bone destruction has a reaction order that differs from the zero order. The fibrous blend PLA/PHB ratio affects the rate of hydrolysis and ozonolysis so that the fibers with prevalent content of PLA display poor resistance to degradation in aqueous and gaseous media. View Full-Text
Keywords: poly(3-hydroxybutyrate); polylactide; blends; ultrathin fibers; electrospinning poly(3-hydroxybutyrate); polylactide; blends; ultrathin fibers; electrospinning
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MDPI and ACS Style

Olkhov, A.A.; Tyubaeva, P.M.; Vetcher, A.A.; Karpova, S.G.; Kurnosov, A.S.; Rogovina, S.Z.; Iordanskii, A.L.; Berlin, A.A. Aggressive Impacts Affecting the Biodegradable Ultrathin Fibers Based on Poly(3-Hydroxybutyrate), Polylactide and Their Blends: Water Sorption, Hydrolysis and Ozonolysis. Polymers 2021, 13, 941. https://doi.org/10.3390/polym13060941

AMA Style

Olkhov AA, Tyubaeva PM, Vetcher AA, Karpova SG, Kurnosov AS, Rogovina SZ, Iordanskii AL, Berlin AA. Aggressive Impacts Affecting the Biodegradable Ultrathin Fibers Based on Poly(3-Hydroxybutyrate), Polylactide and Their Blends: Water Sorption, Hydrolysis and Ozonolysis. Polymers. 2021; 13(6):941. https://doi.org/10.3390/polym13060941

Chicago/Turabian Style

Olkhov, Anatoly A., Polina M. Tyubaeva, Alexandre A. Vetcher, Svetlana G. Karpova, Alexander S. Kurnosov, Svetlana Z. Rogovina, Alexey L. Iordanskii, and Alexander A. Berlin 2021. "Aggressive Impacts Affecting the Biodegradable Ultrathin Fibers Based on Poly(3-Hydroxybutyrate), Polylactide and Their Blends: Water Sorption, Hydrolysis and Ozonolysis" Polymers 13, no. 6: 941. https://doi.org/10.3390/polym13060941

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