Biofunctionalization of Textile Materials. 3. Fabrication of Poly(lactide)-Potassium Iodide Composites with Antifungal Properties

The paper presents a method of obtaining poly(lactide) (PLA) nonwoven fabrics with antifungal properties using potassium iodide as a nonwoven modifying agent. PLA nonwoven fabrics were obtained by the melt-blown technique and subsequently surface modified (PLA→PLA-SM-KI) by the dip-coating method. The analysis of these PLA-SM-KI (0.1%–2%) composites included Scanning Electron Microscopy (SEM), UV/VIS transmittance, FTIR spectrometry and air permeability. The nonwovens were subjected to microbial activity tests against Aspergillus niger fungal mold species, exhibiting substantial antifungal activity. The studies showed that PLA-KI hybrids containing 2% KI have appropriate mechanical properties, morphology and demanded antimicrobial properties to be further developed as a potential antimicrobial, biodegradable material.

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Biofunctionalization of Textile Materials. 2. Antimicrobial Modification of Poly(lactide) (PLA) Nonwoven Fabricsby Fosfomycin

Polymers ◽

10.3390/polym12040768 ◽

2020 ◽

Vol 12 (4) ◽

pp. 768 ◽

Cited By ~ 5

Author(s):

Marcin H. Kudzin ◽

Zdzisława Mrozińska

Keyword(s):

Electron Microscopy ◽

Escherichia Coli ◽

Antimicrobial Properties ◽

Air Permeability ◽

Gram Negative ◽

Textile Materials ◽

Nonwoven Fabrics ◽

Ftir Spectrometry ◽

Escherichia Coli Bacteria ◽

Scanning Electron

This research is focused on obtaining antimicrobial hybrid materials consisting of poly(lactide) nonwoven fabrics and using phosphoro-organic compound—fosfomycin—as a coating and modifying agent. Polylactide (PLA) presents biodegradable polymer with multifunctional application, widely engaged in medical related areas. Fosfomycin as functionalized phosphonates presents antibiotic properties expressed by broad spectrum of antimicrobial properties. The analysis of these biofunctionalized nonwoven fabrics processed by the melt-blown technique, included: scanning electron microscopy (SEM), UV/VIS transmittance, FTIR spectrometry, air permeability. The functionalized nonwovens were tested on microbial activity tests against colonies of gram-positive (Staphylococcus aureus) and gram-negative (Escherichia coli) bacteria.

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Facile dip-coating process towards multifunctional nonwovens: Robust noise reduction, abrasion resistance and antistatic electricity

Textile Research Journal ◽

10.1177/0040517517725120 ◽

2017 ◽

Vol 88 (22) ◽

pp. 2568-2578 ◽

Cited By ~ 9

Author(s):

Xiaoning Tang ◽

Xiansheng Zhang ◽

Huiping Zhang ◽

Xingmin Zhuang ◽

Xiong Yan

Keyword(s):

Noise Reduction ◽

Abrasion Resistance ◽

Transmission Loss ◽

Sodium Dodecyl ◽

Waterborne Polyurethane ◽

Dip Coating ◽

Graphite Nanoplatelets ◽

Nonwoven Fabrics ◽

Coating Method ◽

Dip Coating Method

In this study, a multifunctional hybrid coating consisting of waterborne polyurethane (WPU), graphite nanoplatelets (GNPs) and sodium dodecyl sulfate (SDS) was deposited onto the surface of nonwoven fabrics via a dip-coating approach. The results of noise reduction indicated that the acoustic transmission loss of control nonwoven fabrics increased from 3.87 dB to higher than 18 dB after WPU and graphite modification. Moreover, the prepared nonwoven fabrics could withstand more than 2000 times the abrasion against grinding wheels, which significantly improved in comparison with control nonwoven fabrics. The surface resistance of modified nonwoven fabrics decreased approximately seven orders of magnitudes, which exhibited robust antistatic properties. Therefore, it can be concluded that the facile dip-coating method has potential for noise reduction simultaneously with abrasion resistance and antistatic electricity applications.

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In vitro biological and antimicrobial properties of chitosan-based bioceramic coatings on zirconium

Scientific Reports ◽

10.1038/s41598-021-94502-z ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Salim Levent Aktug ◽

Salih Durdu ◽

Selin Kalkan ◽

Kultigin Cavusoglu ◽

Metin Usta

Keyword(s):

Antimicrobial Properties ◽

Dip Coating ◽

In Vitro Bioactivity ◽

Thermal Cracks ◽

Coating Method ◽

Micro Arc Oxidation ◽

Edx Analyses ◽

Dip Coating Method ◽

Bioceramic Coatings

AbstractCa-based porous and rough bioceramic surfaces were coated onto zirconium by micro-arc oxidation (MAO). Subsequently, the MAO-coated zirconium surfaces were covered with an antimicrobial chitosan layer via the dip coating method to develop an antimicrobial, bioactive, and biocompatible composite biopolymer and bioceramic layer for implant applications. Cubic ZrO2, metastable Ca0.15Zr0.85O1.85, and Ca3(PO4)2 were detected on the MAO surface by powder-XRD. The existence of chitosan on the MAO-coated Zr surfaces was verified by FTIR. The micropores and thermal cracks on the bioceramic MAO surface were sealed using a chitosan coating, where the MAO surface was porous and rough. All elements such as Zr, O, Ca, P, and C were homogenously distributed across both surfaces. Moreover, both surfaces indicated hydrophobic properties. However, the contact angle of the MAO surface was lower than that of the chitosan-based MAO surface. In vitro bioactivity on both surfaces was investigated via XRD, SEM, and EDX analyses post-immersion in simulated body fluid (SBF) for 14 days. In vitro bioactivity was significantly enhanced on the chitosan-based MAO surface with respect to the MAO surface. In vitro microbial adhesions on the chitosan-based MAO surfaces were lower than the MAO surfaces for Staphylococcus aureus and Escherichia coli.

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SYNTHESIS OF CHITOSAN/TiO2 COMPOSITE AND ITS COATING ON SURFACE OF TEXTILE SUBSTRATE

Molekul ◽

10.20884/1.jm.2016.11.2.243 ◽

2016 ◽

Vol 11 (2) ◽

pp. 265

Author(s):

Agung Nugroho Catur Saputro

Keyword(s):

Performance Test ◽

Dip Coating ◽

X Ray Diffraction ◽

X Ray ◽

Ftir Spectrometry ◽

Coating Method ◽

Dip Coating Method

Coatings of composite Chitosan/TiO2 on a surface of textile have been successfully performed. These coatings were done by dip-coating method. The variety of coatings textile were performed in 2, 4, and 6 coatings. The textile was coated by composite of Chitosan/TiO2 then characterized by FTIR Spectrometry, X-Ray Diffraction and Scanning Elelectron Microscopy (SEM). Based on the spectra of FTIR Spectrofotometry, XRD difractogram and imaging of SEM it can be concluded that hypothesized composite of Chitosan/TiO2 was coated on surface of textile but that hypothesis were still very weak and it need to be examined by performance test.

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Biofunctionalization of Textile Materials.1. Biofunctionalization of Poly(Propylene) (PP) Nonwovens Fabrics by Alafosfalin

Coatings ◽

10.3390/coatings9070412 ◽

2019 ◽

Vol 9 (7) ◽

pp. 412 ◽

Cited By ~ 5

Author(s):

Marcin H. Kudzin ◽

Zdzisława Mrozińska ◽

Anetta Walawska ◽

Jadwiga Sójka-Ledakowicz

Keyword(s):

Antimicrobial Properties ◽

Air Permeability ◽

Gram Negative ◽

Textile Materials ◽

Nonwoven Fabrics ◽

Ftir Spectrometry ◽

Antibacterial Material ◽

Escherichia Coli Bacteria ◽

Poly Propylene ◽

Scanning Electron

This paper presents the method of obtaining poly(propylene) (PP) nonwoven fabrics with antimicrobial properties, using Alafosfalin as the nonwoven modifying agent. Alafosfalin, namely L-alanyl-L-1-aminoethylphosphonic acid, presents representative P-terminal phosphonodipeptide, which possesses a strong, broad spectrum of antimicrobial properties. The analysis of these biofunctionalized nonwoven fabrics processed by the melt-blown technique, included: scanning electron microscopy (SEM), UV/Vis transmittance, FTIR spectrometry, and air permeability. The nonwovens were subjected to microbial activity tests against colonies of Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria. Results indicate that the described nonwovens can be successfully used as an antibacterial material.

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In Vitro Biological and Antimicrobial Properties of Chitosan-based Bioceramic Coatings on Zirconium

10.21203/rs.3.rs-208843/v1 ◽

2021 ◽

Author(s):

Salim Levent Aktug ◽

Salih Durdu ◽

Selin Kalkan ◽

Kultigin Cavusoglu ◽

Metin Usta

Keyword(s):

Antimicrobial Properties ◽

Dip Coating ◽

Thermal Cracks ◽

Coating Method ◽

Micro Arc Oxidation ◽

Edx Analyses ◽

Dip Coating Method ◽

The One ◽

Bioceramic Coatings

Abstract Ca-based porous and rough bioceramic surfaces were coated on zirconium by micro arc oxidation (MAO). Subsequently, an antibacterial chitosan layer was covered on the MAO-coated zirconium surfaces by dip coating method to develop an antibacterial, bioactive and biocompatible composite biopolymer and bioceramic layer for implant applications. The cubic-ZrO2, meta-stable Ca0.15Zr0.85O1.85, and Ca3(PO4)2 were detected on the MAO surface by powder-XRD. The existence of chitosan on the MAO-coated Zr surfaces was verified by FTIR. The micro-pores and thermal cracks on the bioceramic MAO surface were sealed by chitosan coating, while the MAO surface is porous and rough. All elements such as Zr, O, Ca, P and C were homogenously distributed through both surfaces. Moreover, both surfaces indicated hydrophobic properties. However, the contact angle value of the MAO surface was lower than the one of chitosan-based MAO surface. In vitro bioactivity on both surfaces was investigated by XRD, SEM and EDX analyses at post-immersion in simulated body fluid (SBF) up to 14 days. In vitro bioactivity was significantly enhanced on the chitosan-based MAO surface with respect to the MAO surface. In vitro bacterial adhesions on the chitosan-based MAO surfaces were lower compared to the MAO surfaces for Staphylococcus aureus and Escherichia coli.

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Porous Gel Coatings Obtained by Phase Separation in ORMOSIL System

MRS Proceedings ◽

10.1557/proc-628-cc7.6 ◽

2000 ◽

Vol 628 ◽

Cited By ~ 1

Author(s):

Kazuki Nakanishi ◽

Souichi Kumon ◽

Kazuyuki Hirao ◽

Hiroshi Jinnai

Keyword(s):

Phase Separation ◽

Reaction Time ◽

Volume Fraction ◽

Sol Gel ◽

Reaction Times ◽

Dip Coating ◽

Coating Solution ◽

Coating Method ◽

Gel Phase ◽

Dip Coating Method

ABSTRACTMacroporous silicate thick films were prepared by a sol-gel dip-coating method accompanied by the phase separation using methyl-trimethoxysilane (MTMS), nitric acid and dimethylformamide (DMF) as starting components. The morphology of the film varied to a large extent depending on the time elapsed after the hydrolysis until the dipping of the coating solution. On a glass substrate, the films prepared by early dipping had inhomogeneous submicrometer-sized pores on the surface of the film. At increased reaction times, relatively narrow sized isolated macropores were observed and their size gradually decreased with the increase of reaction time. On a polyester substrate, in contrast, micrometer-sized isolated spherical gel domains were homogeneously deposited by earlier dippings. With an increase of reaction time, the volume fraction of the gel phase increased, then the morphology of the coating transformed into co-continuous gel domains and macropores, and finally inverted into the continuous gel domains with isolated macropores. The overall morphological variation with the reaction time was explained in terms of the phase separation and the structure freezing by the forced gelation, both of which were induced by the evaporation of methanol during the dipping operation.

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