scholarly journals Development and characterization of conductive textile (cotton) for wearable electronics and soft robotic applications

2020 ◽  
Vol 90 (15-16) ◽  
pp. 1792-1804
Author(s):  
Zuhaib Hassan ◽  
Fatma Kalaoglu ◽  
Ozgur Atalay
Keyword(s):  
Cotton Fabric ◽  
Cotton Fabrics ◽  
Metal Coating ◽  
Wearable Electronics ◽  
Before And After ◽  
Coating Method ◽  
Yarn Count ◽  
Finer Yarn ◽  
Conductive Textile ◽  
Fabric Surface

This study aims to manufacture and characterize various types of conductive cotton fabrics through the copper metal coating approach. Thus, we selected nine-combed cotton knitted fabrics with different yarn fineness and elastane percentage in order to see the effect of these parameters on conductivity and physical properties of the samples. We also explored the surface morphology of all the knitted cotton fabric samples before and after the coating method via scanning electron microscopy (SEM), which showed a remarkably uniform deposition of copper on the fabric surface, and performed SEM-energy-dispersive X-ray spectroscopy to determine the coated material content on the surface of the fabric after the metal coating process. The results revealed that knitted cotton fabric of 5% elastane with the finer yarn count (Ne = 40/1) showed excellent conductivity compared to the other knitted cotton fabric of 10% elastane with a finer count (Ne = 40/1) or coarser 5% elastane (Ne = 30/1). Therefore, the knitted cotton fabrics of 5% elastane having the finer count (Ne = 40/1) can be considered a suitable candidate for e-textile applications.

scholarly journals Established an eco-friendly cotton fabric treating process with enhancing anti-wrinkle performance

2021 ◽  
Vol 16 ◽  
pp. 155892502110034
Author(s):  
Xiongfang Luo ◽  
Pei Cheng ◽  
Wencong Wang ◽  
Jiajia Fu ◽  
Weidong Gao
Keyword(s):  
Tensile Strength ◽  
Citric Acid ◽  
Cotton Fabric ◽  
Crosslinking Agent ◽  
Cost Effective ◽  
Waterborne Polyurethane ◽  
Cotton Fabrics ◽  
Wrinkle Resistance ◽  
Before And After ◽  
Strength Retention

This study establishes an eco-friendly anti-wrinkle treating process for cotton fabric. Sodium hydroxide-liquid ammonia pretreatment followed by 6% (w/w) PU100 adding citric acid pad-cure-dry finishing. In this process, citric acid (CA) was used as the fundamental crosslinking agent during finishing because it is a non-formaldehyde based, cost-effective and well wrinkle resistance agent. Environmental-friendly waterborne polyurethane (WPU) was used as an additive to add to the CA finishing solution. Six commercial WPUs were systematically investigated. Fabric properties like wrinkle resistance, tensile strength retention, whiteness, durable press, softness, and wettability were well investigated. Fourier transform infrared spectra and X-ray diffraction spectra were also measured and discussed before and after adding waterborne polyurethane. Tentative mechanism of the interaction among the WPU, CA, and modified cotton fabrics is provided. The effect of cotton fabric pretreatment on fabric performance was also investigated. After the eco-process’s treatment, the fabric wrinkle resistant angle was upgraded to 271 ± 7°, tensile strength retention was maintained at 66.77% ± 3.50% and CIE whiteness was elevated to 52.13 ± 3.21, which are much better than the traditional CA anti-wrinkle finishing based on mercerized cotton fabrics. This study provides useful information for textile researchers and engineers.

Fabrication of cotton fabrics using family III cellulose-binding domain for enhanced surface properties

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105202-105205 ◽  
Author(s):  
Liting Zhang ◽  
Yaofei Sun ◽  
Wenji Yao ◽  
Guoying Dai ◽  
Ping Wang
Keyword(s):  
Surface Properties ◽  
Cotton Fabric ◽  
Surface Functionalization ◽  
Physical Adsorption ◽  
Cotton Fabrics ◽  
Binding Domain ◽  
Cellulose Binding Domain ◽  
Fabric Surface ◽  
Cellulose Binding ◽  
Enhanced Surface

Cotton fabric surface functionalization by physical adsorption of CBDIII through a sample soaking process.

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.

Study of thermal-sensitive alginate-Ca2+/poly(N-isopropylacrylamide) hydrogels supported by cotton fabric for wound dressing applications

2018 ◽  
Vol 89 (5) ◽  
pp. 801-813 ◽  
Author(s):  
Bing Li ◽  
Dapeng Li ◽  
Yanni Yang ◽  
Lu Zhang ◽  
Ke Xu ◽  
...  
Keyword(s):  
Water Vapor ◽  
Drug Release ◽  
Cotton Fabric ◽  
Wound Dressing ◽  
Transmission Rate ◽  
Cotton Fabrics ◽  
Solution Temperature ◽  
Scanning Calorimetry ◽  
Direct Deposition ◽  
Fabric Surface

In this study, direct deposition, 1,2,3,4-butanetetracarboxylic acid (BTCA) crosslinking, chelating and ultraviolet (UV) photo-grafting methods were employed to bond alginate-Ca2+/poly( N-isopropylacrylamide) (PNIPAAm) interpenetrating network hydrogel onto cotton fabric surface for wound dressing applications. Infrared spectroscopy confirmed the presence of alginate-Ca2+/PNIPAAm hydrogels on the cotton fabrics. Scanning electron microscopy was used to investigate surface and cross-section morphologies. Differential scanning calorimetry and three-dimensional video microscopy indicated that fabric-supported hydrogels maintained the thermal-sensitive property with a lower critical solution temperature (LCST) of around 34–35℃. The results of water vapor permeation revealed that the water vapor transmission rate at 37℃ was significantly higher than that at 25℃ for the shrink and collapse of the hydrogels above the LCST. Moreover, the breaking stress of the fabric-supported hydrogels was similar to that of the original cotton fabrics, but much larger than the hydrogels by themselves. The UV photo-grafting provided the strongest peel strength, followed by the BTCA crosslinking, the chelating and the direct deposition method. The cotton fabric-supported alginate-Ca2+/PNIPAAm hydrogels were stiffer than the original cotton fabric due to the high glass transition temperature of PNIPAAm (about 140℃). The in vitro drug release experiment confirmed that the cumulative release amount was much higher at around 37℃ (above the LCST) than at 25℃ (below the LCST). This showed that the fabric-supported thermal-sensitive hydrogels had functions of keeping the wound area breathable and comfortable, and provided controlled drug release with good mechanical properties, indicating a great potential and significance for wound dressing applications.

Cotton Fabric Finished by WPU/LPAA Modified Nano-ZnO for Antibacterial Applications

2014 ◽  
Vol 711 ◽  
pp. 123-128
Author(s):  
Qun Li ◽  
Pei Yao Li ◽  
Xi Hui Zhao ◽  
Xiao Wen Li ◽  
Jian Ping Wang ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Antibacterial Activity ◽  
Surface Modification ◽  
Cotton Fabric ◽  
Antibacterial Agent ◽  
Antimicrobial Properties ◽  
Cotton Fabrics ◽  
E Coli ◽  
Baking Process ◽  
Fabric Surface

An antibacterial agent (ZPU) was prepared by surface modification of nanoZnO with aliphatic aqueous polyurethane (WPU) and polyacrylates sodium of lower molecular weight (LPAA). Then two kinds of cotton fabrics were dipped in ZPU and finally finished by paking-baking process. ZPU and the finished cotton fabrics were characterized by SEM, TEM and DLS. The antimicrobial properties of the cotton fabrics were investigated. The results indicated that ZnO retained nanosize with little aggregation on the fabric surface. The finished cotton fabrics showed obviously antibacterial activity againstS. aureusandE. coliwith the 24 h antibacterial rate of 99%.

Fabrication of superhydrophobic cotton fabrics through wrapping silica with plasma-induced grafting polymerization

2017 ◽  
Vol 89 (3) ◽  
pp. 401-410 ◽  
Author(s):  
Yongqiang Li ◽  
Chao Zou ◽  
Jianzhong Shao ◽  
Ya’nan Li
Keyword(s):  
Contact Angle ◽  
Water Contact Angle ◽  
Cotton Fabric ◽  
Photoelectron Spectroscopy ◽  
Contact Angle Measurement ◽  
Cotton Fabrics ◽  
Angle Measurement ◽  
Water Contact ◽  
Washing Durability ◽  
Before And After

Cotton fabric is commonly used in daily life, but it is easily wetted and contaminated by liquid. Herein, we present a simple and environmentally friendly plasma technology for hydrophobic modification of cotton fabric. In order to endow superhydrophobicity to cotton fabric, helium plasma inducing graft polymerization of 1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane (D4Vi) was utilized to wrap SiO2 particles on cotton fabrics. Cotton fabrics were successively dipped in silica sol and D4Vi, then treated by plasma. Cotton fabrics before and after modification were characterized by using field emission scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and water contact angle measurement. The experimental results showed that the cotton-SiO2-D4Vi consisted of nanoscale SiO2 protrusions and low-surface-energy film polymerized by D4Vi. In addition, the one wrapped SiO2 of 161 nm presented excellent hydrophobicity, washing durability, and repellency toward different types of liquids with a water contact angle of 152°.

scholarly journals FLAME RETARDANCY IMPROVEMENT OF MODIFIED COTTON FABRIC BY NANO SILICA SOL COATING

2020 ◽  
Vol 58 (4) ◽  
pp. 473
Author(s):  
Vu Anh Tuan ◽  
Pham Thi Thu Trang ◽  
Giang H. Ha Le ◽  
Manh B Nguyen ◽  
Tran Quang Vinh ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Flame Retardancy ◽  
Dip Coating ◽  
Silica Sol ◽  
Nano Silica ◽  
Tear Strength ◽  
Coating Method ◽  
Coated Fabrics ◽  
Dip Coating Method ◽  
Fabric Surface

Cotton fabric was coated by silica sol at different times using dip-coating method. Nano silica coated fabrics were characterized by XRD, FTIR, SEM, EDX, TGA. From SEM result, it showed that fabric surface was coated by nanosilica particles of 20-30 nm size. Nano silica coated fabrics showed the improvement not only flame retardancy (LOI increased from 18.4 to 30.8) but also the tear strength. Tear strength increased from 23 N/mm (cotton fabric) to 29.9 N/mm (fabric coated nanosilica at 3 times).

Synthesis and Application of a Novel Modified Polysiloxane Polymer with High Reaction Activity as Water Repellent Agent for Cotton Fabrics

2015 ◽  
Vol 10 (2) ◽  
pp. 155892501501000
Author(s):  
Chaohong Dong ◽  
Zhou Lu ◽  
Ping Zhu ◽  
Lei Wang ◽  
Fengjun Zhang
Keyword(s):  
Cotton Fabric ◽  
Water Vapor Permeability ◽  
Water Repellency ◽  
Catalytic Amount ◽  
Cotton Fabrics ◽  
Water Repellent ◽  
Vapor Permeability ◽  
Untreated Cotton ◽  
High Reaction ◽  
Before And After

A novel poly(4-iodobutoxylmethylsiloxane) (PIBMS) water repellent with high reaction activity was synthesized using poly(hydromethylsiloxane) (PHMS), methyl iodide (MeI) and tetrahydrofuran (THF) in the presence of a catalytic amount of PdCl2. The new chemical active group of PIBMS could covalently bond to the cotton fabric. It is conducive to improve the washability of treated cotton fabric. The structure of PIBMS was confirmed by the FT-IR and 1H NMR spectra. The PIBMS was applied onto cotton fabric by a pad-dry-cure process. PIBMS was applied to cotton fabrics and the effect of the process parameters on water repellent performance was studied. The morphology of PIBMS polymer film on the cotton fabric was investigated by SEM. The water repellency of treated cotton fabrics before and after vigorous washes was compared. The results show that the water repellent grade of cotton fabric treated with PIBMS was 90. The contact angle of the treated cotton fabric was 136.94°, which was higher than that of the untreated cotton fabric. The water repellent grade of treated cotton fabric was still as high as 80 after 20 times washing. The tear strength and the tensile strength of cotton fabric significantly increased after PIBMS treatment. The air permeability and the water vapor permeability of treated cotton fabric were slightly lower than those of untreated cotton fabrics.

scholarly journals Effect of plasma grafting with Hexamethyldisiloxane on comfort and flame resistance of cotton fabric

2021 ◽  
Vol 72 (02) ◽  
pp. 225-230
Author(s):  
RIADH ZOUAR ◽  
SONDES GARGOUBI ◽  
Emilia Visileanu
Keyword(s):  
Flame Retardant ◽  
Cotton Fabric ◽  
Cotton Fabrics ◽  
Atmospheric Plasma ◽  
Clothing Industry ◽  
Plasma Technology ◽  
Flame Resistance ◽  
Before And After ◽  
Plasma Grafting ◽  
The Media

We investigated the potential of atmospheric plasma technology to enhance the properties of textile material against flame propagation before and after washing. The effects of this treatment on the rigidification of the media were also determined using draping and bending stiffness tests. We showed that deposing Silicone molecules on cotton fabrics leads to flame retardant cotton with a conservation of the whole structure after burning. Moreover, washing of the sample evidenced high permanency of the thin grafted coating against chemical domestic washing detergent. Nevertheless, comfort properties of the textile decrease, which limits the applications of the plasma eco-friendly technology in the clothing industry.

scholarly journals Preparation of durable superhydrophobic cotton fabric for self-cleaning and oil–water separation

2021 ◽  
Author(s):  
Qingbo Xu ◽  
Xiating Ke ◽  
Zongqian Wang ◽  
Peng Wang ◽  
Changlong Li
Keyword(s):  
Surface Energy ◽  
Cotton Fabric ◽  
Superhydrophobic Surface ◽  
Lower Surface ◽  
Cotton Fabrics ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Self Cleaning ◽  
Fabric Surface

Abstract Improving the surface roughness and reducing the surface energy are the main strategies for constructing cotton fabrics with superhydrophobic surface. However, the complex finishing process and poor durability still impede the production and application of superhydrophobic cotton fabrics. Therefore, it is critical to produce superhydrophobic fabrics with excellent durability via a noncomplicated method. In this work, monomers of methyl methacrylate (MMA) and trifluoroethyl methacrylate (TFMA) were polymerized via free radical polymerization to produce a fluoropolymer. Then, the fabric was coated with the fluoropolymer to construct a superhydrophobic surface via the pad-dry-cure technology. The TFMA unit in the fluoropolymer had lower surface energy than the MMA unit. Under the high-temperature curing condition, the MMA unit in the fluoropolymer was grafted onto the cotton fabric via transesterification, and the TFMA was exposed on the fabric surface. The finished fabric showed durable superhydrophobic properties, outstanding oil–water separation properties, and excellent self-cleaning properties. Given the results, the finished fabric has great potential application in clothing and industrial fields.

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