Plasma-exposed TiO2 nanoparticles on polyethylene terephthalate matrix surface and its effects on the durable hydrophobic coating

2021 ◽  
pp. 004051752199090
Author(s):  
Eshraga AA Siddig ◽  
Yu Zhang ◽  
Baojing Yang ◽  
Tianshu Wang ◽  
Jianjun Shi ◽  
...  
Keyword(s):  
Polyethylene Terephthalate ◽  
Photoelectron Spectroscopy ◽  
Fiber Surface ◽  
Oil Composition ◽  
Water Contact ◽  
X Ray ◽  
Pet Fabric ◽  
Hydrophobic Coating ◽  
Washing Durability ◽  
Methacrylate Copolymer

Commercial dull polyethylene terephthalate (PET) fabric treated by radio frequency (13.56 MHz) plasma and further coated with perfluoroalkyl methacrylate copolymer C6 displays much highly durable hydrophobicity and oleophobicity. The as-prepared fabric exhibited a water contact angle above 170°, a water spray rating of 80 (ISO 3), and oil resistance ratings of B and C separately for different oil composition grades after 10 washing cycles, which were two levels higher than the untreated and C6-coated PET[TiO2] fabric. The organic component PET was more prone to etching than TiO2, which created a waviness structure and exposed prominent TiO2 nanoparticles on the PET fiber surface. The relative atom ratio O and Ti increased through energy-dispersive X-ray spectroscopy spectra and X-ray photoelectron spectroscopy analysis. This result indicates that the exposure of TiO2 and the introduction of reactive polar groups such as O=C-O on the fiber surface contributed to react with C6 and improved the washing durability. In general, such coating technology may provide a simple benign technique for constructing materials with physicochemical properties.

Anti-ultraviolet and anti-static modification of polyethylene terephthalate fabrics with graphene nanoplatelets by a high-temperature and high-pressure inlaying method

2018 ◽  
Vol 89 (8) ◽  
pp. 1488-1499 ◽  
Author(s):  
Cheng Zhang ◽  
Ling Zhong ◽  
Dingfei Wang ◽  
Fengxiu Zhang ◽  
Guangxian Zhang
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Polyethylene Terephthalate ◽  
Fiber Surface ◽  
Graphene Nanoplatelets ◽  
X Ray Diffraction ◽  
Static Properties ◽  
Protection Factor ◽  
X Ray ◽  
Pet Fabric

Grafting graphene on polyethylene terephthalate (PET) fibers requires a large number of environmentally harmful chemicals. In this study, a facile high-temperature and high-pressure method of inlaying graphene nanoplatelets was applied to fabricate anti-ultraviolet (UV) and anti-static graphene/PET composites. The resulting graphene-inlaid (GI) PET fabric, which showed excellent anti-ultraviolet and anti-static properties, was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform–infrared spectroscopy and X-ray diffraction. Results suggested that graphene had been inlaid into the PET fiber surface, and that the optimal inlaying conditions were as follows: inlaying temperature 200℃, inlaying pressure 15 MPa, and inlaying time 15 s. The UV protection factor of the GI PET fabric under optimal conditions could reach 50+ and was maintained at 50+ after 50 laundering cycles. The peak values of the static voltage and its half-time in the GI PET fabric could be reduced from 500.0 V to 10.0 V and from 7.39 s to 0.53 s, respectively, and the electrical resistivity of the GI PET fabric was 36.04 ± 0.14 kΩ.cm. The breaking strengths of the GI PET fabrics could be retained over 70.0% that of the pure PET fabric. The facile high-temperature and high-pressure inlaying method is an eco-friendly technique that requires very few chemicals, except for ethyl alcohol.

scholarly journals An Effective Surface Modification of Polyester Fabrics for Improving the Interfacial Deposition of Polypyrrole Layer

2017 ◽  
Author(s):  
Zhenyun Zhao ◽  
Jing Zhou ◽  
Tao Fan ◽  
Lanqian Li ◽  
Zulan Liu ◽  
...  
Keyword(s):  
Surface Modification ◽  
Sulfuric Acid ◽  
Photoelectron Spectroscopy ◽  
Fiber Surface ◽  
Acid Modification ◽  
Effective Surface ◽  
Water Contact ◽  
Polyester Fabrics ◽  
X Ray ◽  
Angle Effect

A simple and effective surface modification of polyester fabrics with sulfuric acid to improve the interfacial deposition of polypyrrole was presented in our work. A range of sulfuric acid concentrations were analyzed by studying water contact angle. Effect of sulfuric acid modification on the deposition of polypyrrole was investigated by sheet resistance and color depth of fabric samples. Polyester fabrics coated with polypyrrole layer were confirmed by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-Ray diffraction spectra (XRD), Fourier transform infrared spectroscopy (FTIR). XPS showed that sulphur containing functional groups were obviously appeared on the polyester fiber surface after modification, which were advantageous to promote the deposition of polypyrrole onto polyester fabrics. The improved deposition increased electrical conductivity of fabric samples.

Silver mirror reaction metallized chromatography paper for supercapacitor application

2021 ◽  
Author(s):  
I-Hsuan Chen ◽  
Jung-Hsien Chang ◽  
Ren-Jie Xie ◽  
Chia-Hui Tseng ◽  
Sheng-Rong Hsieh ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Photoelectron Spectroscopy ◽  
Cost Effective ◽  
Water Contact ◽  
X Ray ◽  
Supercapacitor Application ◽  
Resource Limited ◽  
Vis Spectroscopy ◽  
Silver Mirror ◽  
Silver Mirror Reaction

Abstract In this study, the easy-to-operate silver mirror reaction (SMR) was used for metallizing chromatography paper. The SMR-metallized paper was characterized by water contact angle measurements, a surface profiler, X-ray photoelectron spectroscopy, UV-vis spectroscopy, X-ray diffraction, and electrical resistance measurement. The characterization results show that Ag was successfully synthesized on cellulose fibers and was electrically conductive after cyclic bending. Moreover, this SMR-metallized paper was used as electrodes for fabricating a supercapacitor. This SMR-metallized paper could be used for realizing cost-effective flexible electronics applied in on-site biochemical sensing in resource-limited settings.

scholarly journals Superhydrophobic Film on Hot-Dip Galvanized Steel with Corrosion Resistance and Self-Cleaning Properties

Metals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 687 ◽  
Author(s):  
Chongchong Li ◽  
Ruina Ma ◽  
An Du ◽  
Yongzhe Fan ◽  
Xue Zhao ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Photoelectron Spectroscopy ◽  
Copper Nitrate ◽  
Galvanized Steel ◽  
Electrochemical Technique ◽  
Etching Time ◽  
Galvanic Replacement ◽  
Water Contact ◽  
X Ray ◽  
Self Cleaning

Super-hydrophobic film with hierarchical micro/nano structures was prepared by galvanic replacement reaction process on the surface of galvanized steel. The effects of the etching time and copper nitrate concentration on the wetting property of the as-prepared surfaces were studied. Scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and electrochemical technique were employed to characterize the surface morphology, chemical composition, and corrosion resistance. The stability and self-cleaning property of the as-fabricated super-hydrophobic film were also evaluated. The super-hydrophobic film can be obtained within 3 min and possesses a water contact angle of 164.3° ± 2°. Potentiodynamic polarization measurements indicated that the super-hydrophobic film greatly improved the corrosion resistance of the galvanized steel in 3.5 wt % NaCl aqueous solution. The highest inhibition efficiency was estimated to be 96.6%. The obtained super-hydrophobic film showed good stability and self-cleaning property.

The Surface Modification and Characteristics of Useful Expanded PTFE Composites by Photo-Radiation Methods

2013 ◽  
Vol 690-693 ◽  
pp. 1636-1640 ◽  
Author(s):  
Te Hsing Wu ◽  
Ko Shao Chen ◽  
Lie Hang Shen
Keyword(s):  
Contact Angle ◽  
Acetic Acid ◽  
Photoelectron Spectroscopy ◽  
Plasma Deposition ◽  
Material Surface ◽  
Water Contact ◽  
X Ray ◽  
Hydrogel Film ◽  
Γ Ray ◽  
Ptfe Composites

In this study, We immobilized hydrogel material onto expanded polytetrafluoroethylene (ePTFE) film and used as an functional biomaterial. The material is a film containing titanium oxide onto polymer sheet. The hydrogel film is hydrophilic, bacterial inactivated and bio-compatible. In order to improve the ePTFE film biocompatibility, the cold plasma or γ-ray technology was used with acetic acid as monomer to deposit onto ePTFE film and then (N-isopropylacrylamide) was grafted onto the surface by radiation photo-grafting. The characteristics of the material surface were evaluated with X-ray photoelectron spectroscopy (XPS), FTIR and water contact angle. It was found that the contact angle of water on the untreated ePTFE significantly decrease from125° to 72° after ePTFE film being treated with acetic acid plasma deposition procedure. Due to the hydrophilicity of poly (N-isopropylacrylamide), so the contact angle of water on the ePTFE-g-NIPAAm almost approached to 0°. This thermal sensitive ePTFE hydrogels can be applied to artificial guiding tube and wound dressing material.

scholarly journals Anticoagulant Polyethylene Terephthalate Surface by Plasma-Mediated Fucoidan Immobilization

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 750 ◽  
Author(s):  
Kadir Ozaltin ◽  
Marian Lehocky ◽  
Petr Humpolicek ◽  
Jana Pelkova ◽  
Antonio Di Martino ◽  
...  
Keyword(s):  
Polyethylene Terephthalate ◽  
Photoelectron Spectroscopy ◽  
Anticoagulant Activity ◽  
Blood Clot ◽  
Clot Formation ◽  
Thrombin Time ◽  
Air Plasma ◽  
Water Contact ◽  
Polymeric Biomaterials ◽  
Performance Surface

Biomaterial-based blood clot formation is one of the biggest drawbacks of blood-contacting devices. To avoid blood clot formation, their surface must be tailored to increase hemocompatibility. Most synthetic polymeric biomaterials are inert and lack bonding sites for chemical agents to bond or tailor to the surface. In this study, polyethylene terephthalate was subjected to direct current air plasma treatment to enhance its surface energy and to bring oxidative functional binding sites. Marine-sourced anticoagulant sulphated polysaccharide fucoidan from Fucus vesiculosus was then immobilized onto the treated polyethylene terephthalate (PET) surface at different pH values to optimize chemical bonding behavior and therefore anticoagulant performance. Surface properties of samples were monitored using the water contact angle; chemical analyses were performed by FTIR and X-ray photoelectron spectroscopy (XPS) and their anticoagulant activity was tested by means of prothrombin time, activated partial thromboplastin time and thrombin time. On each of the fucoidan-immobilized surfaces, anticoagulation activity was performed by extending the thrombin time threshold and their pH 5 counterpart performed the best result compared to others.

Effect of Plasma-Induced Polymerization on Contact Angle of Paper

2011 ◽  
Vol 396-398 ◽  
pp. 1619-1623
Author(s):  
Zhao Ping Song ◽  
Jun Rong Li ◽  
Hui Ning Xiao
Keyword(s):  
Contact Angle ◽  
Photoelectron Spectroscopy ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Polymer Grafting ◽  
Hydrophobic Property ◽  
Cellulose Fibres ◽  
Water Contact ◽  
X Ray ◽  
Factors Associated

Hydrophobic modification of cellulose fibres was conducted by plasma-induced polymer grafting in an attempt to increase the hydrophobicity of paper. Two hydrophobic monomers, i.e., butyl acrylate (BA) and 2-ethylhexyl acrylate (2-EHA) were grafted on cellulose fibres, induced by atmospheric cold plasma. Various influencing factors associated with the plasma-induced grafting were investigated, including the contact time and reaction temperature with monomers, and the dosage of monomers. Contact-angle measurement, infrared spectrum (IR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM) were used to ascertain the occurrence of the grafting. The results showed that the hydrophobic property of the modified paper sheet was improved significantly after the plasma-induced grafting. The water contact angle on the surface of the paper reached up to higher than125°.

An investigation into the anti-icing properties of fabrics used for the outer layer of firefighter clothing

2018 ◽  
Vol 89 (8) ◽  
pp. 1500-1511 ◽  
Author(s):  
Lun Han ◽  
Xiaoming Zhao ◽  
Jannette Eveline Kidalla
Keyword(s):  
Outer Layer ◽  
Photoelectron Spectroscopy ◽  
Smooth Surface ◽  
Hydrophobic Surface ◽  
Hydrophobic Property ◽  
Water Contact ◽  
Hydrophobic Coating ◽  
Before And After ◽  
Coating Method ◽  
Fabric Surface

The anti-icing properties of fabrics can be considered as involving two parts, the super-hydrophobic property and the ease of ice removal property. In this study, a super-hydrophobic surface was built on to the outer layer of firefighter clothing using nano-silica, C13H13F17O3Si, C19H42O3Si and PU-2540 using a coating method. This coating stops water drops from staying on the fabric surface easily. At the same time, an ultra-smooth surface was built on to the super-hydrophobic surface already created on the fabric using perfluoropolyethers (PFPE) oil by a dipping method, which adds an ice removal function to the fabrics. The anti-icing properties of the samples prepared in the research described in this paper have been investigated using field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), ease of ice removal property tests and static water contact angle analysis. At the same time, the thermal protective performance (TPP) of the samples, before and after super-hydrophobic treatment, was studied by a TPP tester. Results show that the super-hydrophobic coating with an ultra-smooth surface can significantly increase the anti-icing properties of the fabrics used for the outer layer of firefighter clothing. C13H13F17O3Si and C19H42O3Si can improve the hydrophobic properties of the coating. The anti-icing coating in this paper can increase the TPP of the fabrics.

Analytical measurement of microstickies on fibers by model surfaces

2014 ◽  
Vol 29 (2) ◽  
pp. 232-239 ◽  
Author(s):  
Xiaotang Du ◽  
Jeffery S. Hsieh
Keyword(s):  
Photoelectron Spectroscopy ◽  
Polyvinyl Acetate ◽  
Model Compound ◽  
International Association ◽  
Model Surface ◽  
Water Contact ◽  
X Ray ◽  
New Methods ◽  
Hydrophilic Nature ◽  
Model Surfaces

Abstract A silicon wafer coated with cellulose was prepared to measure the deposition of stickies on fibers and polyvinyl acetate (PVAc) suspension is prepared as the model compound. In addition, two methods, shear force and aeration, were used to induce the agglomeration and deposition of microstickies. The model surface was characterized by X-ray photoelectron spectroscopy (XPS) and water contact angle. The results from new methods were also compared with old methods of High-density polyethylene (HDPE) deposition and INGEDE (International Association of the Deinking Industry) Method 4. Although these methods have been used to predict the deposition of stickies onto the drying felt or other equipment, the deposition of stickies onto fibers can differ significantly due to the hydrophilic nature of the fibers. This is the first measurement method that could help to predict the deposition of stickies onto paper products, which has been shown to cause detrimental effects.

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