Evaluation and Characterization of Ultrathin Poly(3-hydroxybutyrate) Fibers Loaded with Tetraphenylporphyrin and Its Complexes with Fe(III) and Sn(IV)

Карпова, С. Г.; Chumakova, Natalia A.; Лобанов, А. В.; Olkhov, A. A.; Vetcher, Alexandre A.; Iordanskii, A. L.

doi:10.3390/polym14030610

Cited by 6 publications

(4 citation statements)

References 50 publications

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“…%). A similar effect was shown by the authors in the work [ 35 ] at a high content of tetraphenylporphyrin in the polymer matrix. The decrease in the degree of crystallinity may be associated with a change in the intermolecular interaction in polylactide due to the addition of a low molecular-weight substance.…”

Section: Resultssupporting

confidence: 87%

Polylactide—Meso-Substituted Arylporphyrin Composites: Structure, Properties and Antibacterial Activity

et al. 2023

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The structural features and antibacterial properties of polymer–porphyrin composites were investigated. Meso-substituted arylporphyrin 0.2–0.5 wt.% was immobilized in a polylactide matrix. The immobilization of porphyrin causes a bathochromic shift and splitting of the Soret band. This study of the morphology of the obtained composites demonstrated a uniform distribution of the meso-substituted arylporphyrin in the polylactide matrix. It was determined by the X-ray diffraction analysis that porphyrin does not affect the α-form of polylactide crystalline formations. However, its addition into the polymer somewhat reduces the melting point (by 1–2 °C) and the degree of crystallinity of polylactide (by 3–4%). The elastic characteristics of the resulting systems were determined by the ultrasonic method, and a decrease in the density of the samples with an increase of the arylporphyrin content was shown. According to the results of the biological test, the dark toxicity of the obtained composites against the microorganisms Staphylococcus aureus, Salmonella Typhimurium and Escherichia coli was shown. Immobilizates containing 0.4 and 0.5 wt.% porphyrin showed the best antibacterial effect. The antibacterial activity of the studied composites makes it possible to attribute the polylactide–porphyrin systems to promising materials in the field of medicine and bioengineering.

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Section: Resultssupporting

confidence: 87%

Polylactide—Meso-Substituted Arylporphyrin Composites: Structure, Properties and Antibacterial Activity

et al. 2023

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“…For example, lipid systems containing omega-3 fatty acids or omega-3 fatty acids and liposomes are incorporated into woven, non-woven cotton substrates by impregnation. Also, the use of fibrous materials with a drug already introduced into the biopolymer [14][15][16][17]: dipyridamole and tetraphenylporphyrins is being actively studied. Based on the evaluation of release profiles, textiles are expected to be useful for wound healing and anti-inflammatory applications.…”

Section: Introductionmentioning

confidence: 99%

Ozonation of Non-Woven Ultrathin Fibrous Biomaterials for Medical and Packaging Implementations

Alexeeva¹,

Siracusa²,

Konstantinova³

et al. 2024

Ozonation - New Aspects

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Antibiotic resistance of pathogens is among the major concerns in various medical applications. Therefore, the search for the novel antimicrobial agents that could prevent pathogen’s resistance, while maintaining efficient treatment, is one of the most important issues for biomedicine nowadays. One of the relevant methods for the development of functional non-woven materials possessing antimicrobial properties is the use of ozone and ozonolysis products for the modification of fibrous materials. This approach has recently attracted both academic and industrial interest and has found various biomedical applications. Several methods providing antimicrobial properties to textiles using ozone or ozonolysis products were proposed, including encapsulation and/or direct introduction of ozone-generated antimicrobial agents into the fibrous polymer matrix and ozone treatment of non-woven fiber materials. For the latter, the ozonolysis products are uniformly distributed predominantly on the polymer surface but could be also formed inside the polymer bulk due to ozone diffusion through the amorphous areas or defects. It was found that ozone modification of fibrous materials could lead to increase in hydrophilicity and improvement in their functional properties (smoothness, elasticity, strength, antimicrobial activity). In this chapter, various aspects of ozone modification of non-woven fiber materials for biomedical applications are reported and discussed.

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“…Along with widely used methods such as NMR, mechanic or dielectric dynamic spectroscopy, thermophysical execution, and IR (FTIR, ATR, and Raman) spectroscopy, the spin-probing ESR spectroscopy technique presents an extremely responsive approach to the reliable exploration of segmental mobility in petrol-and bio-based polymer blend systems [40,41]. Earlier, the authors investigated a series of individual and blended biopolymers on the base of poly(3-hydroxybutyrate) [PHB] by the above-mentioned ESR method to elucidate the role of segmental dynamics in annealing, hydrothermal aging, ozonolysis, as well as for water and drug diffusion in the PHB-based films and electrospun fibers [42][43][44]. The correlation among thermophysical phenomena, diffusivity, and segmental dynamics has stimulated us to transfer the focus of academic consideration from PHB blends to PLA ones.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Polylactide—Poly(ε-Caprolactone) Fibers: Structure Characterization and Segmental Dynamic Response

Karpova,

Olkhov,

Varyan

et al. 2024

Polymers

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Electrospun ultrathin fibers based on binary compositions of polylactide (PLA) and poly(ε-caprolactone) (PCL) with the various content from the polymer ratio from 0/100 to 100/0 have been explored. Combining thermal (DSC) and spectropy (ESR) techniques, the effect of biopolymer content on the characteristics of the crystal structure of PLA and PCL and the rotative diffusion of the stable TEMPO radical in the intercrystallite areas of PLA/PCL compositions was shown. It was revealed that after PLA and PCL blending, significant changes in the degree of crystallinity of PLA, PCL segment mobility, sorption of the Tempo probe, as well as its activation energy of rotation in the intercrystalline areas of PLA/PCL fibers, were evaluated. The characteristic region of biopolymers’ composition from 50/50 to 30/70% PLA/PCL blend ratio was found, where the inversion transition of PLA from dispersive medium to dispersive phase where an inversion transition is assumed when the continuous medium of the PLA transforms into a discrete phase. The performed studies made it possible, firstly, to carry out a detailed study of the effect of the system component ratio on the structural and dynamic characteristics of the PLA/PCL film material at the molecular level.

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Evaluation and Characterization of Ultrathin Poly(3-hydroxybutyrate) Fibers Loaded with Tetraphenylporphyrin and Its Complexes with Fe(III) and Sn(IV)

Cited by 6 publications

References 50 publications

Polylactide—Meso-Substituted Arylporphyrin Composites: Structure, Properties and Antibacterial Activity

Polylactide—Meso-Substituted Arylporphyrin Composites: Structure, Properties and Antibacterial Activity

Ozonation of Non-Woven Ultrathin Fibrous Biomaterials for Medical and Packaging Implementations

Electrospun Polylactide—Poly(ε-Caprolactone) Fibers: Structure Characterization and Segmental Dynamic Response

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