Structural–mechanical and antibacterial properties of a soft elastic polyurethane surface after plasma immersion N2+ implantation

Морозов, И. А.; Mamaev, A. S.; Осоргина, И. В.; Lemkina, L. M.; Коробов, В. П.; Belyaev, A. Yu.; Porozova, S. E.; Sherban, Marina G.

doi:10.1016/j.msec.2016.01.062

Cited by 25 publications

(18 citation statements)

References 14 publications

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“…Detailed analysis of structural-mechanical properties of the treated surfaces (roughness, fractal and wave properties, elastic modulus) and the cross-sections of the modified layer are given in the work [19]. In particular, the elastic modulus of the surface, determined by the AFM nanoindentation, increases with the plasma energy and fluence and was 20 MPa for the untreated PU, 125 MPa (PIII 1-16), 254 MPa (1-17) and 1900 MPa (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17).…”

Section: Resultsmentioning

confidence: 99%

“…Treatment of soft polymer leads to the formation of a pronounced wrinkled texture on the surface [15], the peculiarities of surface texture affect the antibacterial properties of the coating [16,17]. The wrinkling phenomenon is related with the loss of stability of the hard layer on the soft substrate due to thermal-induced deformation [18].…”

Section: Introductionmentioning

confidence: 99%

“…The stiffness of the plasma-modified layer could be many times greater than the elastic modulus of the soft polymer "substrate" [19]. As a result, even simple uniaxial deformations fracture the modified surface [17,20] and could damage of implant and body tissues.…”

Section: Introductionmentioning

confidence: 99%

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The Fracture of Plasma-Treated Polyurethane Surface under Fatigue Loading

et al. 2018

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Plasma treatment of soft polymers is a promising technique to improve biomedical properties of the materials. The response to the deformation of such materials is not yet clear. Soft elastic polyurethane treated with plasma immersion ion implantation is subjected to fatigue uniaxial loading. The influence of the strain amplitude and the plasma treatment regime on damage character is discussed. Surface defects are studied in unloaded and stretched states of the material. As a result of fatigue loading, transverse cracks (with closed overlapping edges as well as with open edges deeply propagating into the polymer) and longitudinal folds which are break and bend inward, appear on the surface. Hard edges of cracks cut the soft polymer which is squeezed from the bulk to the surface. The observed damages are related to the high stiffness of the modified surface and its transition to the polymer substrate.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Fracture of Plasma-Treated Polyurethane Surface under Fatigue Loading

et al. 2018

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“…The usage of silver [14] or copper [15] ions improves the 2 of 10 antimicrobial properties of the material. Treatment of soft polymer leads to the formation of a pronounced wrinkled texture on the surface [16], which improves the antibacterial properties of the coating [17,18].…”

Section: Introductionmentioning

confidence: 99%

The Fracture of Plasma-Treated Polyurethane Surface under Fatigue Loading

Морозов¹,

Mamaev²,

Bannikov³

et al. 2018

Preprint

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“…Most such works have been devoted to study of the physical and chemical properties of the modified surface and its interactions with biological objects . The plasma treatment changes the surface texture of the soft polymers, and this has a positive effect on the antibacterial properties of the surface . A qualitative study of the elastomer surface showed an increase in the elastic modulus of a PIII‐treated surface …”

Section: Introductionmentioning

confidence: 99%

Soft polyurethanes treated by plasma immersion ion implantation: Structural and mechanical properties of the surface‐modified layer

Морозов

Mamaev

Осоргина

et al. 2017

J of Applied Polymer Sci

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The surfaces of soft polyurethanes (with elastic moduli of 7 and 50 MPa) treated by plasma immersion ion implantation were studied; the materials became hard and wrinkled. The characteristics of the modified surface (modulus, roughness, wave and fractal parameters, linear deformation) and the cross‐sectioned layer were studied in relation to the treatment regime and the modulus of the polymer. A hypothesis that the wrinkling was solely caused by thermal expansion was checked but rejected. The cross‐section of the treated material had a hard part of a certain thickness and a transition zone. The elastic modulus of the hard part was estimated by the finite element method. A comparison of the obtained thicknesses with calculations by TRIM software indicated that the latter gave underestimated results. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45983.

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Structural–mechanical and antibacterial properties of a soft elastic polyurethane surface after plasma immersion N2+ implantation

Cited by 25 publications

References 14 publications

The Fracture of Plasma-Treated Polyurethane Surface under Fatigue Loading

The Fracture of Plasma-Treated Polyurethane Surface under Fatigue Loading

The Fracture of Plasma-Treated Polyurethane Surface under Fatigue Loading

Soft polyurethanes treated by plasma immersion ion implantation: Structural and mechanical properties of the surface‐modified layer

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