Cem Gunesoglu

Improving the Antibacterial Property of Polyethylene Terephthalate by Cold Plasma Treatment

Many studies suggest strong hydrophilicity of plasma treated polyester surfaces. However, no studies have been reported on the influence of plasma on the antibacterial activity of polyethylene terephthalate. First samples were padded with triclosan as antibacterial agent with different concentrations. Second samples were treated by oxygen plasma with different operating frequency and treating time, respectively. Afterwards, plasma treated samples were padded with triclosan in same conditions. The results revealed that the antibacterial activity slighlty increased after treating with triclosan. SEM images and FTIR spectra showed that horizontal channels were brought about on the fiber surface and then better surface roughness and wettability were obtained by plasma. Fibers were fully coated with triclosan after plasma and the antibacterial activity increased with increasing operating frequency and reaction time. Finally, the samples treated with triclosan after plasma gave acceptable results and showed the best antibacterial activity for Staphylococcus aureus and Escherichia coli.

Performing the Electrospraying Process for the Application of Textile Nano Finishing Particles

We have performed the electrospraying process via a conventional configuration for the application of nanoparticles, used for water and oil repellency of textile fabrics, onto the surface of the textile to avoid undesirable agglomeration of those particles. This approach shows by means of scanning electron microscopy (SEM) images that such an application (electrospraying) would avoid agglomeration by using the electrostatic forces produced and gave acceptable oil repellency, which also points to commercial market interest.

The enhanced electrical conductivity of cotton fabrics via polymeric nanocomposites

Enhanced electrical conductivity of cotton fabrics coated with polyaniline (PANI) and PANI/carbon coated Fe (Fe@C) and carbon coated Co (Co@C) metal nanoparticles (NPs) composites were investigated. PANI/metal nanoparticle (NP) composites were fabricated with a surface initialized polymerization method and silanization helped with chemical bonding to cotton. The volume resistivity of the samples and structural characterizations were assessed by relevant methods. The results showed that enhanced electrical conductivity, thermal stability and magnetization were obtained via polymeric nanocomposites (PNC) and all these findings revealed that PANI/metal NP PNC coated cotton fabrics would exhibit good level electromagnetic shielding performance as a function of combined electrical conductivity and magnetization which is the objective of our future studies.

Electrical conduction investigation of stainless steel wire‐reinforced cotton fabric composites by electrospraying of fluoropolymer

This study investigates the effect of the incorporation of stainless steel (SS) wires into cotton fabrics on the conductivity of the fabric in order to ease the electrospraying of an emulsified fluoropolymer resin. The statistical analysis showed that the increase in the conductivity of the fabric surface significantly lowered the deposition time of the fluoropolymer resin onto the fabric surface; however, the electrical voltage applied during electrospraying and the flow rate of the emulsion in the electric field had a greater effect on the deposition time of the process than the conductivity of the fabric.

A statistical study on selected process parameters of electrospraying

Deposition time is a key factor in determining application ease, time, and cost of electrospraying. This statistical study investigates the contribution of process parameters of electrospraying on deposition time when conducted for the application of commercially available fluoropolymer resin onto cotton fabric. The results showed that solution viscosity was highly significant on deposition time, and any variation in other parameters would cause highly significant changes in deposition time for the solutions with a higher viscosity/fluoropolymer resin concentration.

Obtaining medical textiles including microcapsules of the ozonated vegetable oils

In this paper, it was aimed to obtain disposable medical textiles having antibacterial and wound healing properties, as well as biological adaption. For this purpose, the St. John’s Wort oil and flax seed oil were ozonated, and the oils were capsulated with arabic gum. The produced ozonated oils were characterized through FTIR and TGA analyses, as well as the properties of antibacterial, wound healing, and biological adaption were investigated. The produced microcapsules were examined via optical microscope and FTIR. The characterized microcapsules of the ozonated oils were applied to the textiles with padding method. After the applications, the fabrics were researched with SEM and FTIR analyses; in addition the antibacterial and wound healing properties and biological adaption of the textiles were also investigated. The results showed that the St. John’s Wort oil and flax seed oil were successfully ozonated and microcapsulated. The microcapsules of the oils could be applied to the fabric samples with the determined application recipe. The ozonated oils and the fabric samples applied microcapsules of the ozonated oils gained high antibacterial and wound healing property. In addition, the fabric samples were produced as having biological adaptation.