Characteristics of hybrid chitosan/phospholipid-sterol, peptide coatings on plasma activated PEEK polymer

Przykaza, Kacper; Jurak, Małgorzata; Wiącek, Agnieszka Ewa; Mroczka, Robert

doi:10.1016/j.msec.2020.111658

Cited by 22 publications

(10 citation statements)

References 81 publications

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“…In similar research by other authors, when PEEK was activated by the nitrogen plasma and the 0.1 mg/mL chitosan solution was spread, they observed only higher signal intensity in the range of 3500–3200 cm −1 , without identification of specific peaks [ 31 ]. This is probably due to the insufficient sensitivity of the FTIR technique for the samples prepared from a solution with a lower concentration of chitosan (0.2 mg/mL), since its ions were detected when applying the much more sensitive TOF-SIMS analysis [ 11 ]. Nevertheless, a significant reduction in the intensity (depletion of the spectrum) of the chitosan signals after deposition with bioglass for the 1.0 mg/mL chitosan samples was observed and can be associated with the specific co-adsorption of both components, or the attenuation of one signal.…”

Section: Resultsmentioning

confidence: 99%

“…To overcome this problem, various chemical and physical modifications of the top polymer layer are used. For example: sandblasting [ 6 ], plasma treatment [ 7 ], acid etching [ 8 ], laser processing [ 9 ], and the deposition of bioactive substances, such as polysaccharides, sterols, peptides, phospholipids, hydroxyapatite, or titanium layers [ 4 , 10 , 11 , 12 ]. One of the biocompatible, degradable, and non-toxic polysaccharides is chitosan (Chit).…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of Hybrid Bioglass-Chitosan Coatings on the Plasma Activated PEEK Polymer

et al. 2023

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Polyetheretherketone (PEEK) is a biocompatible, chemically and physically stable radiolucent polymer that exhibits a similar elastic modulus to the normal human bone, making it an attractive orthopedic implant material. However, PEEK is biologically inert, preventing strong enough bonding with the surrounding bone tissue when implanted in vivo. Surface modification and composite preparation are the two main strategies for the improvement of the bioactivity of PEEK. In this study, the plasma activated PEEK surfaces with the embedded bioglass, chitosan, and bioglass-chitosan mixed layers applying from the solution dip-coating technique were investigated. The most prominent factors affecting the coating biocompatibility are strictly connected with the composition of its outer surface (its charge and functional groups), hydrophilic-hydrophobic character, wettability and surface free energy, and topography (size of pores/substructures, roughness, stiffness), as well as the personal characteristics of the patient. The obtained surfaces were examined in terms of wettability and surface-free energy changes. Additionally, FTIR (Fourier Transformation Infrared Spectrometry) and SIMS (Secondary Ion Mass Spectrometry) were applied to establish and control the coating composition. Simultaneously the structure of coatings was visualized with the aid of SEM (Scanning Electron Microscopy). Finally, the obtained systems were incubated in SBF (Simulated Body Fluid) to verify the modifications’ influence on the bioactivity/biocompatibility of the PEEK surface. Different structures with variable compositions, as well as changes of the wettability, were observed depending on the applied modification. In addition, the incubation in SBF suggested that the bioglass-chitosan ratio influenced the formation of apatite-like structures on the modified PEEK surfaces.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characteristics of Hybrid Bioglass-Chitosan Coatings on the Plasma Activated PEEK Polymer

et al. 2023

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“…Plasma-activated polymeric surfaces have earned a prominent place within the biomedical field for their ability to immobilize biologically active molecules [76,[137][138][139][140]. In fact, some of the plasma-induced Fig.…”

Section: Detection Of Protein Immobilization Via Xps Analysesmentioning

confidence: 99%

Chemical characterization of plasma-activated polymeric surfaces via XPS analyses: A review

Ghobeira

Tabaei

Morent

2022

Surfaces and Interfaces

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“…On PEEK, no contact angles comparable to the low-pressure plasma treatment were achieved after exposure to PDD plasma, but the wetting improvement is nonetheless remarkable. The water contact angle is more than halved, the surface energy is significantly increased and the polar fraction of the surface energy is increased by a factor of 15 [14,15]. At this point, it must be kept in mind that we are dealing with fundamentally different processes: Low-pressure plasma treatment is carried out at significantly higher power under optimal conditions, requires pumping and aeration times in addition to the treatment time, and cannot be used independently of location.…”

Section: Discussionmentioning

confidence: 99%

Surface Characterisation of PEEK and Dentin, Treated with Atmospheric Non-Thermal PDD Plasma, Applicable for Dental Chair-Side Procedures

Behnecke

Steinert

Petersen

2021

Plasma

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This study investigates the suitability of Piezoelectric Direct Discharge Plasma as a tool for wetting behaviour modification of PEEK and dentin, and compares the results of this method with low-pressure plasma treatment and phosphoric acid etching. Static contact angle measurements were made, roughness was assessed using tactile measurement, and AFM and SEM images were taken. An optimum operating distance of ≤15 mm was determined for the plasma based on the water contact angle. Furthermore, it was demonstrated that despite only a fraction of the power, the PDD plasma also produces hydrophilic and nanostructured PEEK surfaces with a 38° water contact angle in the same plasma time. In contrast, the gold standard of dental surface modification of dentin—phosphoric acid etching—showed no measurable contact angle due to the exposed dentin tubules. Treatment with PDD plasma reduces the water contact angle of dentin from 65° to 43° and is not negative affected by water. Wet, PDD plasma-treated dentin samples show a water contact angle of only 26.5°. The dentin tubules exposed by chemical etching led to a significantly increased roughness. No comparable effect could be demonstrated for plasma treatment on dentin, but based on the contact angle measurements, a chemically strongly activated surface with strongly polar interaction behaviour can be assumed. The additional use of the PDD plasma technique to improve wetting could therefore have a positive effect on the adhesive bond between human dentin and polymeric dental restorative materials or, depending on the adhesive system, replace the etching process altogether.

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Characteristics of hybrid chitosan/phospholipid-sterol, peptide coatings on plasma activated PEEK polymer

Cited by 22 publications

References 81 publications

Characteristics of Hybrid Bioglass-Chitosan Coatings on the Plasma Activated PEEK Polymer

Characteristics of Hybrid Bioglass-Chitosan Coatings on the Plasma Activated PEEK Polymer

Chemical characterization of plasma-activated polymeric surfaces via XPS analyses: A review

Surface Characterisation of PEEK and Dentin, Treated with Atmospheric Non-Thermal PDD Plasma, Applicable for Dental Chair-Side Procedures

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