Coated Polyester Fabric Research Articles

Investigation on dye ability and antibacterial activity of nanolayer platinum coated polyester fabric using DC magnetron sputtering

In this research work, one side of polyester fabrics was coated by platinum using DC magnetron sputtering. The dye ability of coated and uncoated samples to different natural and synthetic dyes was evaluated. The antibacterial counting test was used for determination of antibacterial efficiency of both treated and untreated samples. The results show that, the existence of platinum nanolayer on the surface of PET fabrics causes improve the dyeability of fabrics. The improvement for natural dyes is more significant than for synthetic dye. According to antibacterial activity tests, platinum itself has no antibacterial effect against Staphylococcus aureus. However, the natural dyed Pt-coated samples show moderate antibacterial effect.

Electrical Resistivity Studies on Polyaniline Coated Polyester Fabrics

The effect of fabric parameters such as type of weave and pick density on electrical surface resistivity of polyaniline coated fabric was studied. The fabric structure greatly influences the fabric electrical resistivity. Among the samples tested the twill structure with high picks per inch shows lower surface resistivity. The plain structure which has more interlacement points shows higher resistivity.

Surface Resistivity and Shear Characteristics of Polyaniline Coated Polyester Fabric

The surface resistivity and shear characteristics of the polyaniline/ polyester fabrics produced by varying the number of coatings with different fabric structures were studied. With increase in number of coatings, the resistivity of the fabric decreases. The plain woven fabric gives higher surface resistivity than twill and satin weaves. Shear rigidity of twill and satin fabrics are lower than that of plain woven fabrics.

In situ Grafting of Maleic Anhydride Onto Natural Rubber to Improve Its Adhesion to Polyester Fabric: Mechanical and Spectroscopic Analyses

Here we present a new method for improving adhesion between natural rubber (NR) and polyester fabric. This is done by in situ grafting of maleic anhydride (MA) onto NR in a two-roll mill. The grafting procedure was followed by infrared spectroscopy (FT-IR). The effect of ultraviolet/ozone (UV/O3) radiation on the stability of the rubber mix as well as on the peel strength of the rubber coated fabric was investigated. Mechanical and spectroscopic analyses as well as light microscopy were used to assess the adhesion properties of the resultant rubber mixes to the polyester fabric. It was observed that the grafting with MA together with UV/O3 treatment improved the peel strength of the rubber coated polyester fabric.

Effect of weight reduction pre-treatment on the electrical and thermal properties of polypyrrole coated woven polyester fabrics

Weight reduction increased the amount of deposited polypyrrole (PPy) on the polyester (PET) fiber surface, leading to a considerable decrease in electrical resistance and improved heat generation capacity for the PPy coated PET fabrics. Application of dc voltages to an insulated roll of PPy-coated fabric increased the temperature to about 90 °C. This showed the suitability of these fabrics for heating applications. The optimum PPy deposition of about 2.8% was obtained in samples weight reduced by aqueous sodium hydroxide treatment. AFM images revealed a smooth surface morphology of the untreated fiber whereas the treated fiber had a high surface roughness.

Rubber/Fiber Interactions During the Tearing of Rubber Coated Polyester Fabrics

Abstract Results on the characterization of the tearing behavior of a series of uncoated and butyl rubber coated polyester plain weave fabrics are reported. Polyester fabrics were obtained from commercial source to cover a broad range of fill yarn properties. Dip coating was used to obtain coated fabrics. Data indicates that the tear behavior of this composite system can be analyzed in terms of initiation and arrest loads, stiffness, and number of yarns per peak. Results show that yarn mobility and subsequent del zone structure play a critical role in each of these characteristics.

Polymerising pyrrole on polyester textiles and controlling the conductivity through coating thickness

The surface resistance of polypyrrole (PPy)-coated polyester fabrics was investigated and related to coating thickness, which was controlled by adjusting the reactant concentrations. The thickness of the coating initially increased rapidly followed by a steady increase when the concentration of pyrrole (Py) was larger than a concentration of approximately 0.4 mg/ml. The surface resistance decreased from 10 6 to 10 3 Ω with increase in pyrrole concentration within 0.2 mg/ml until the concentration reached a value of about 0.4 mg/ml, above which the rate of decrease diminished. The effect of initial treatment with monomer or oxidant prior to polymerisation reaction with regards to thickness and surface resistance was minimal. The immersion time of the textile into the monomer solution prior to polymerisation reaction did not have a significant effect on the abrasion resistance.

Biostability of electrically conductive polyester fabrics: an in vitro study.

The biostability of a series of polypyrrole (PPy)-coated polyester fabrics was investigated in an in vitro model. PPy-coated sample fabrics were incubated in saline at 37 degrees C for 1 and 2 weeks. After each period of incubation, the surface electrical resistivity of the sample fabrics was measured to monitor the changes caused by the incubation. Redoping was then performed by immersing the sample fabrics in a 1N HCl solution at room temperature for 30 min, which was followed by another measurement of the surface resistivity. The surface morphology of the sample fabrics was observed by scanning electron microscopy. The surface chemical composition of the fabrics and the oxidation of nitrogen in PPy were measured with X-ray photoelectron spectroscopy. The surface electrical resistivity of the PPy-coated fabrics was found to increase with the progress of incubation, which was mainly caused by dedoping and uptake of oxygen. This increase was nonlinear and accelerated with time. The surface resistivity of most of the samples was retained in the range of 10(3)-10(4) Omega/square after 1 week of incubation, which was considered suitable for short-term electrical stimulation applications. Physical deterioration represented by the cracking and delamination of the PPy coating was occasionally observed on the sample fabrics showing the most significant increase of resistivity. Further improvement of the stability of conductivity is highly desirable.

In vitro biocompatibility study of electrically conductive polypyrrole-coated polyester fabrics.

This study investigated the basic biocompatibility aspects of two types of polypyrrole (PPy)-coated polyester fabrics for possible use as vascular prostheses. These PPy-coated fabrics, PPy-Phos and PPy-Plas, were sterilized with ethylene oxide (EO) and the following characterizations were performed: surface morphology by scanning electron microscope, EO residuals analysis by the headspace method, acute systemic toxicity in the mouse model, hemolysis, blood coagulation time, viability and proliferation of endothelial cells measured with the WST-1 method, and activation of polymorphonuclear (PMN) cells indicated by the specific expression of interleukin 8 mRNA measured by reverse transcription polymerase chain reaction. Virgin polyester fabrics, expanded poly(tetrafluoroethylene) (ePTFE), and medical-grade Bionate 80A poly(carbonate urethane) were used as references in the cell culture experiments. The PPy-coated fabrics revealed different surface morphologies by showing more PPy lamina and clusters on the PPy-Plas. Neither of the PPy-coated fabrics had an adverse effect on hemolysis and coagulation time, and they did not cause any acute systemic toxicity. The EO residual level was as low as 5 ppm or less, which is considered quite acceptable. Although exhibiting a relatively low initial cell adhesion at 24 h, the two PPy-coated samples showed no cytotoxicity at 72 and 168 h. Bionate 80A and ePTFE recorded cytotoxicity at 72 and 168 h, respectively. The virgin fabrics also demonstrated a decrease of viable cells at 72 h that was not significant. The activation of PMN cells induced by both PPy-coated fabrics, the ePTFE, and the negative control was significantly lower than that induced by their respective tumor necrosis factor-alpha controls. These results therefore highlighted the potential of PPy-coated fabrics for use as cardiovascular prostheses. It was suggested that cell adhesion moieties should be incorporated into the PPy/fabric composite to increase cell adhesion and subsequent cell proliferation.

Utilization of Vinyl Coated Polyester Fabrics for Architectural Applications

Utilization of Vinyl Coated Polyester Fabrics for Architectural Applications

Utilization of Vinyl Coated Polyester Fabrics for Architectural Applications

High performance properties in an architectural fabric are achieved by the proper selection of the base fiber, the selected fabric weave, the appropriate formulated coating compounds, and the coating processes utilized to produce the fabric.

膜構造建築物用膜材料の屋外ばくろによる耐久性能評価に関する研究

Performance overtime of membrane materials for membrane structure has prominent important role as a front line of defence barrier between inner and outer space of the structure. This paper deals with the results of ten years out door exposure tests for PVC coated polyester fabrics, intended to obtain much practical and applicable performance data for design for durability or service life prediction of membrane structure. It could be conducted that behaviour of degradation in time, especially, tensile and tear strength are comparatively critical in view of structural safety aspect and this could be applicable as performance based test data for setting service life of the membrane structures and also setting some measures for maintenance operation.

Mechanical Properties of Pvc - Coated Polyester Fabrics and Their Joints

Mechanical Properties of Pvc - Coated Polyester Fabrics and Their Joints

Fire Resistance of Phosphazene Rubber Coated Fabrics

As a result of research sponsored by the U.S. Army a new class of rubbers, with an attractive combination of properties has been developed. One of their outstanding characteristics is inherent fire re sistance. To evaluate their efficiency as fire resistant coatings, two weights of polyester fabric were coated and evaluated. The data show a superiority in flame resistance for these materials over a currently used polychloro prene/chlorosulfonated polyethylene coated polyester fabric.