Effects of the Origin and Deacetylation Degree of Chitosan on Properties of Its Coatings on Titanium

Supernak-Marczewska, Milena; Zieliński, Andrzej

doi:10.3390/coatings10020099

Cited by 7 publications

(3 citation statements)

References 33 publications

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“…40 Hence, it is reasonable to implement such surfaces with substances with antimicrobial efficiency. The obtained contact angle values are similar to those reported so far, for chitosan in the range of 70 -75 , 41 and PVP of 60 -75 . 42 EE100 coatings alone exhibit hydrophobic properties (contact angle of about 109 ).…”

Section: Discussionsupporting

confidence: 89%

Cytocompatibility, antibacterial, and corrosion properties of chitosan/polymethacrylates and chitosan/poly(4‐vinylpyridine) smart coatings, electrophoretically deposited on nanosilver‐decorated titania nanotubes

Pawłowski,

Bartmański,

Ronowska

et al. 2023

J Biomed Mater Res

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The development of novel implants subjected to surface modification to achieve high osteointegration properties at simultaneous antimicrobial activity is a highly current problem. This study involved different surface treatments of titanium surface, mainly by electrochemical oxidation to produce a nanotubular oxide layer (TNTs), a subsequent electrochemical reduction of silver nitrate and decoration of a nanotubular surface with silver nanoparticles (AgNPs), and finally electrophoretic deposition (EPD) of a composite of chitosan (CS) and either polymethacrylate‐based copolymer Eudragit E 100 (EE100) or poly(4‐vinylpyridine) (P4VP) coating. The effects of each stage of this multi‐step modification were examined in terms of morphology, roughness, wettability, corrosion resistance, coating‐substrate adhesion, antibacterial properties, and osteoblast cell adhesion and proliferation. The results showed that the titanium surface formed nanotubes (inner diameter of 97 ± 12 nm, length of 342 ± 36 nm) subsequently covered with silver nanoparticles (with a diameter of 88 ± 8 nm). Further, the silver‐decorated nanotubes were tightly coated with biopolymer films. Most of the applied modifications increased both the roughness and the surface contact angle of the samples. The deposition of biopolymer coatings resulted in reduced burst release of silver. The coated samples revealed potent antimicrobial activity against both Gram‐positive and Gram‐negative bacteria. Total elimination (99.9%) of E. coli was recorded for a sample with CS/P4VP coating. Cytotoxicity results using hFOB 1.19, a human osteoblast cell line, showed that after 3 days the tested modifications did not affect the cellular growth according to the titanium control. The proposed innovative multilayer antibacterial coatings can be successful for titanium implants as effective postoperative anti‐inflammation protection.

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Section: Discussionsupporting

confidence: 89%

Cytocompatibility, antibacterial, and corrosion properties of chitosan/polymethacrylates and chitosan/poly(4‐vinylpyridine) smart coatings, electrophoretically deposited on nanosilver‐decorated titania nanotubes

Pawłowski,

Bartmański,

Ronowska

et al. 2023

J Biomed Mater Res

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“…Moreover, the degree of deacetylation can also affect the values of the CA. For instance, Supernak-Marczewska et al [58] demonstrated that the CA increased with the increase in deacetylation degree value. These results support the lower CA of CS3, as its deacetylation degree is lesser than CS1 and CS2 or CS5 and CS6.…”

Section: Characterization Of the Pe-modified Surfacesmentioning

confidence: 99%

Green‐Based Modifications of Polyethylene Surfaces Enhancing Antifouling Properties in Water‐Related Systems

Vieira,

Rodríguez‐Lorenzo,

Garrido‐Maestu

et al. 2023

Adv Materials Technologies

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The effects of fouling in plastics, such as polyethylene (PE), can have a major economic impact due to tube clogging and other issues. Surface properties, both chemical and physical, can substantially influence biofilm formation, so developing antifouling materials through engineering these properties is very promising. In this work, two main approaches are evaluated for reducing the fouling on PE surfaces: chemical modification with green coating (polyethylene glycol (PEG) and different chitosan nanoparticles (CS NPs)) and physical modification with distinct micro‐topographies. First, the antibacterial adhesion is tested with Escherichia coli. The results reveal that CS NPs result in a considerable decrease in adhesion depending on which source of chitosan is used. PEG coating only reduced adhesion by 26%, while CS NPs with a high molecular weight (CS3) decreased adhesion by 88% in relation to non‐modified surfaces. Moreover, lozenges topographic modification (T2) has the highest effect on the bacteria adhesion within the physically‐modified PE surfaces. Finally, CS3 and T2 surfaces are tested in water samples in dynamic conditions for 27 days and results showed lower bacterial adhesion than unmodified surfaces. Overall, both strategies offer eco‐friendly and cost‐effective solutions for preventing fouling and extending the lifetime of polymeric surfaces for environmental applications.

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“…Enzyme immobilization technique that has been developed recently is by means of adsorption on the surface of solids or membranes [28]. Enzymes can be more durable or less easily damaged when immobilized in a membrane, where the enzyme is separated in the pores of the membrane [29].…”

Section: Introductionmentioning

confidence: 99%

Activity Test, Selectivity, Stability of Chitinase on Amobil Chitosan Membranes

Hamsina

Tang

Hasani

2021

IJMMU

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The use of enzymes for industrial functions needs enzymes that are stable, selective and might be used repeatedly. The aim of the study was to determine the chitinase enzyme's function, selectivity, and stability in amobil chitosan membranes. The research method consisted of stages: production of the chitinase enzyme which included the manufacture of chitin colloidal substrate, rejuvenation of thermophilic bacteria, preparation of the inoculum and determining the optimum time of production, fractionation of ammonium sulfate, chitinase enzyme immobilization technique and activity, stability and selectivity test of amobil enzyme. The results demonstrated that chitinase activity, which incorporates the optimum temperature and thus the optimum concentration of production within the immobilization technique, had an optimum temperature of 65oC on day 4 of production time with an OD value of 0.9876. The selectivity of amobil chitinase with metal ions Cd (II), Pb (II), Zn (II), and Hg (II) demonstrated that amobil chitinase was selective for these ions. Eamobil chitinase was heat stable at 55-75oC and resistant to organic solvents, suggesting that it could be used repeatedly.

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Effects of the Origin and Deacetylation Degree of Chitosan on Properties of Its Coatings on Titanium

Cited by 7 publications

References 33 publications

Cytocompatibility, antibacterial, and corrosion properties of chitosan/polymethacrylates and chitosan/poly(4‐vinylpyridine) smart coatings, electrophoretically deposited on nanosilver‐decorated titania nanotubes

Cytocompatibility, antibacterial, and corrosion properties of chitosan/polymethacrylates and chitosan/poly(4‐vinylpyridine) smart coatings, electrophoretically deposited on nanosilver‐decorated titania nanotubes

Green‐Based Modifications of Polyethylene Surfaces Enhancing Antifouling Properties in Water‐Related Systems

Activity Test, Selectivity, Stability of Chitinase on Amobil Chitosan Membranes

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