Formation of a regular microrelief in deformation of plasma-treated polymer films

Волынский, А. Л.; Panchuk, D. A.; Садакбаева, Ж.К.; Bol’shakova, A. V.; Kechek’yan, A. S.; Yarysheva, L. M.; Бакеев, Н. Ф.

doi:10.1134/s0012501609080016

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…This phenomenon has also been found in applications in metrology [11], the development of smart materials [12], and flexible electronics [13]. However, the application of such materials is associated with mechanical loads that provoke the following defects in the treated surfaces: strain-induced cracks and folds [14][15][16][17]. Under cyclic loads, even tiny nanocracks propagate to a considerable depth [18], damaging both the polymer and the surrounding tissues; the formed defects become centers of bacterial growth [10].…”

Section: Introductionmentioning

confidence: 94%

Polyurethane Treated in Ar/C2H2/Ar Plasma: Towards Deformable Coating with Improved Albumin Adsorption

et al. 2021

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Plasma modification of soft polymeric surfaces has many prospects in creating biomedical devices. The deformability of the obtained coatings should be studied, as the usage of such materials implies mechanical loads. Polyurethane (a two-phase synthetic polymer) treated in argon/acetylene plasma, with post-treatment in argon plasma, was investigated. A carbon-containing nanocoating (discontinuous mesh-like structures) with structural–mechanical inhomogeneities is formed by the action of Ar/C2H2 plasma. The heterogeneities of the coating are due to the complex structure of the initial substrate and short duration of treatment; as the treatment time increases, the coatings become homogeneous, but their stiffness rises. The treated surfaces in the uniaxial tensile state have micro and/or nanocracks in certain cases of plasma treatment. This is associated with an increased elastic modulus of the coatings. The coatings without cracks have regions with sufficiently alternating stiffness. Post-treatment in argon plasma increases wettability and free surface energy, positively affecting the adsorption of albumin. The stiffness of such coatings increases, becoming more homogeneous, which slightly reduces their crack resistance. Thus, plasma coatings on soft polymers operating under mechanical loads without causing damage should have sufficiently low stiffness, and/or structural-mechanical heterogeneities that provide redistribution of stress.

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Section: Introductionmentioning

confidence: 94%

Polyurethane Treated in Ar/C2H2/Ar Plasma: Towards Deformable Coating with Improved Albumin Adsorption

et al. 2021

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“…This sample retains the ability to realize the deformation mechanism through wave smoothing at strains up to 10%. Calculations similar to the calculation of the parameter d are carried out in [29] on the basis of scanning electron microscopy data. However, the distance between cracks, rather than the area of cracks, is considered, which, in general, has the same essence.…”

Section: Optical Microscopymentioning

confidence: 99%

“…albumin, fibronectin, which in turn provides better biocompatibility with the tissues of the organism) [22][23][24], decreases the activity of other proteins (fibrinogen, which accelerates thrombosis) [12,25], improves antibacterial properties [26], allows to control blood coagulation [27], and also reduces interphase friction [28]. However, despite all the above-mentioned advantages of ion implantation treatment, the obtained carbon coatings are quite brittle [29]. Even small deformations, which should occur during the exploitation of the endoprosthesis, can cause the appearance of cracks [30].…”

Section: Introductionmentioning

confidence: 99%

Crack resistance of carbonized layer of multilayer polyurethane with nanofillers. Combination of casting, solution, carbonization by ion implantation technologies

Izyumov,

Svistkov,

Chudinov

et al. 2023

Frattura Ed Integrità Strutturale

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The paper describes the results of an experimental study of a polyurethane material treated by ion implantation technology. The problems of crack growth in the near-surface layer carbonized by ion treatment were investigated using digital optical microscopy. The methods of atomic force microscopy allowed studying the possibility of carbonized layers delamination from the substrate. As a result, the technology for the production of a multilayer polyurethane material with nanofillers (nanotubes, nanodiamonds, fullerenes, graphenes) and its optimal modification by ion implantation treatment was developed, which makes it possible to improve the biocompatibility of polyurethane implants with human tissues.

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“…Модификация этих изделий плазмой могла бы существенно улучшить их биомедицинские характеристики. Однако в этом случае преимущества покрытия оказываются не столь очевидными, так как внешняя деформация может привести к повреждению покрытия [6,12] Микроскопия. Информация о микроструктуре поверхности была получена при помощи оптического 3D-видеомикроскопа (Hirox KH-7700), а также методами атомно-силовой микроскопии (АСМ).…”

Section: Introductionunclassified

The Prospects of Using Ion-Plasma Modification of Polyurethanes for Creating Deformable Biomedical Products

Морозов¹,

Kamenetskikh²,

Beliaev³

et al. 2021

Perm Sci. Cent. J.

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Formation of a regular microrelief in deformation of plasma-treated polymer films

Cited by 6 publications

References 3 publications

Polyurethane Treated in Ar/C2H2/Ar Plasma: Towards Deformable Coating with Improved Albumin Adsorption

Polyurethane Treated in Ar/C2H2/Ar Plasma: Towards Deformable Coating with Improved Albumin Adsorption

Crack resistance of carbonized layer of multilayer polyurethane with nanofillers. Combination of casting, solution, carbonization by ion implantation technologies

The Prospects of Using Ion-Plasma Modification of Polyurethanes for Creating Deformable Biomedical Products

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