共查询到20条相似文献,搜索用时 718 毫秒
1.
Multifunctional modification of wool fabric using graphene/TiO<Subscript>2</Subscript> nanocomposite
In this study, a new finishing technique is introduced through treatment of wool fabric with graphene/TiO2 nanocomposite. Graphene oxide/titanium dioxide nanocomposite first applied on the wool fabric by hydrolysis of titanium isopropoxide in graphene oxide suspension and then this coating chemically converted by sodium hydrosulfite to graphene/TiO2 nanocomposite. The homogenous distribution of the graphene/TiO2 nanocomposite on the fiber surface was confirmed by field emission scanning electron microscopy (FE-SEM), Energy-dispersive X-ray spectroscopy (EDS) and X-ray mapping. X-ray diffraction patterns proved the presence of titanium dioxide nanoparticles with a crystal size of 127 Å on the treated wool fabric. Also, the defect analysis based on X-ray photoelectron spectroscopy (XPS) established the composition of the nanocomposite. Other characteristics of treated fabrics such as antibacterial activity, photo-catalytic self-cleaning, electrical resistivity, ultraviolet (UV) blocking activity and cytotoxicity were also assessed. The treated wool fabrics possess significant antibacterial activity and photo-catalytic self-cleaning property by degradation of methylene blue under sunlight irradiation. Moreover, this process has no negative effect on cytotoxicity of the treated fabric even reduces electrical resistivity and improves UV blocking activity. 相似文献
2.
Cheng Chen Min Li Chunxia Wang Shaohai Fu Wenjun Yan Chuansheng Chen 《Fibers and Polymers》2018,19(6):1255-1265
The wool fabrics were treated by ultraviolet (UV) radiation and then dyed with Camellia sinensis (L.) O. Ktze var. waldensae (S.Y.Hu) Chang (yellow-bud tea) extract using meta-mordant dyeing method. The results indicated that the hydrophilicity of wool fabrics was improved after UV radiation treatment, which was conducive in improving color performance for the meta-mordant dyeing with yellow-bud tea extract of wool fabrics. The optimal dyeing process was that the powdered extract (5.0 % o.w.f) and the CuSO4 (2.0 % o.w.f) were added to the dyeing liquor, the pH value was adjusted to 3.5-4.0 by HCOOH, the wool fabrics treated by UV radiation for 10 min and then were dyed at a bath ratio of 1:50 under 95 °C for 70 min. By means of three-factor quadratic current rotation revolving design (TQCRRD) method, the computation results of the mathematical equations and models indicated that UV radiation was the most important factor for meta-CuSO4 dyeing with yellow-bud tea extract for wool fabrics. 相似文献
3.
The fuzzing and pilling of untreated, chlorinated and oxidized wool knitted fabrics were compared with frictional coefficients
measured by capstan method, surface modification observed by scanning electron microscopy (SEM), the surface roughness and
the scale height assessed by atomic force microscopy (AFM), and hairiness imaged on the three-dimensional rotational microscopy.
The pilling comparative experiments of the corresponding knitted fabrics were conducted by means of Pillbox method. Experimental
results showed that some scales on the oxidized fiber surface were partially cleaved and some grooves generated. With oxidization
treatment, the anti- and with-scale of friction coefficient increase with decreasing the thickness of scales and the yarn
hairiness. There is good correlation between the result of AFM and the change in frictional coefficients. The pilling grade
of knitted fabric comprised of oxidization wool is 2.5, and the average numbers of pills per 25 cm2 is 25. It is postulated that the surface topography, the frictional properties of oxidized wool fibers and surface hairs
of corresponding yarns may limit the ability of those surface fibers to form fuzz and of those fuzz for pill formation. 相似文献
4.
Fatma Abdelghaffar Rehab A. Abdelghaffar Amany A. Arafa Mona M. Kamel 《Fibers and Polymers》2018,19(10):2103-2111
The growing concern for the personal health and hygiene has created the necessity of acquiring wool fabric antibacterial activity. Silicon dioxide nanoparticles (SiO2 NPs) have appropriate features to enhance the functional properties of wool fabrics, especially with polymer application. In this study efficient coating using polyethylene glycol (PEG2000) and SiO2 NPs were used for imparting antibacterial properties to treated fabrics. All the treatments were carried out using both conventional and ultrasound techniques. The physical and chemical properties were evaluated using FTIR, XRD, and SEM. The result indicated that treated wool fabrics by PEG/SiO2 NPs improved the dyeability and antibacterial of the fabrics and also enhanced its mechanical properties. Furthermore, it is believed that the ultrasound radiation causes homogeneous distribution of cross-links and polymerization throughout the wool surface. This offers considerable advantages compared to conventional treatment. 相似文献
5.
Vahid Shakeri Siavashani Peiman Valipour Ezzatollah Haghighat 《Fibers and Polymers》2014,15(4):729-735
In this study, the effect of corona discharge treatment on the physical and mechanical properties of bleached cotton and polyester-cotton fabrics were investigated. For this purpose, the samples were treated by corona discharge at two levels of voltage 5 and 10 kV, and at various duration times of plasma, ca. 1.4, 2.1 and 3.5 min. The corona discharge treatment was applied on the fabric samples before and after bleaching treatment. The results show that the corona influences on the surface morphology, breaking strength, air permeability, abrasion resistance, and pilling of cotton and polyester-cotton fabrics. Moreover, the levels of voltage and duration of plasma have a different effect on the properties of fabrics. 相似文献
6.
Cotton fabrics were dyed with three commercial vat dyes in order to provide camouflage in Vis-NIR regions and imitate reflectance profile of greenish leaves. To investigate the effect of nano particles on camouflage properties of dyed fabric, nano particles of TiO2 were applied on dyed fabrics using pad-dry-cure method. The nano TiO2 padded dyed fabrics were investigated using scanning electron microscopy (SEM). Reflectance curves of coated dyed samples with different concentrations of nano TiO2 were measured. Results showed that in both of the standard shades, nano TiO2 increases the reflectance value in NIR region and with increasing the concentration of nano TiO2, the reflectance curves of samples tend to show the maximum reflection of greenish leaves (deciduous leaves) in NIR region. Chromatic values (CIE1976 L*, a*, and b*) and color difference (according to CIECMC color difference ΔE*cmc (2:1)) of each of the coated samples were measured using the reflection spectrophotometer. By considering the influence of white color of nano TiO2 on green shade of dyed cotton fabrics and increasing the color difference (between coated samples and the standard shades of the 1948 U.S army pattern) in visible range, optimum concentrations of nano TiO2 for development of camouflage properties on cotton fabrics in both NIR and visible region were determined. These values for NATO and forest green shades were 0.75 % and 0.5 %, respectively. Fastness results showed that both of the samples have acceptable color fastness. The effect of washing and exposure to light on camouflage properties of coated dyed fabrics in visible (in term of chromatic values) and NIR region (in term of spectral reflectance) was investigated when those were coated in optimum concentrations of nano TiO2. The results showed that the effect of after treatments (washing and exposure to light) on surface color spectral characteristics and camouflage properties was inconsiderable. 相似文献
7.
Nano-SiOx suspension was prepared for its unique optical performance to improve the anti-ultraviolet property of cotton fabric in this
paper. The experimental results showed that UV-resistance property of thus treated fabrics had been enhanced significantly.
The spectrum of absorption, reflection, and transmittance of the treated fabric was analyzed during the optimized processing.
The mechanical property of the treated fabric displayed a little increase compared with the original untreated fabric. The
morphology of the treated fabric was studied by SEM. The UPF (Ultraviolet Protection Factor) of the fabric treated with nano-SiOx suspension reached 62, much higher than that of the original untreated fabric. Moreover, after 50 home launderings, the UV-blocking
property of treated fabric changed little due to the strong affinity between the nano-SiOx particles and cotton fiber. 相似文献
8.
The microbial transglutaminase (mTGase) is used as a bio-catalyst to repair the wool damages caused by chemical or enzymatic
treatments. In this paper, the effect of mTGase on the degree of yarn strength, area shrinkage, wettability, and the dyeing
properties of wool was investigated. Through mTGase treatment, the yarn strength was improved about 22.2 %. The knitted wool
fabrics treated with mTGase after pretreatment of H2O2 and protease displayed 7.5 % of area shrinkage and about 22.3 % recovery in tensile strength when compared with those treated
without mTGase. Also, mTGase treatment could improve the wettability and dyeing properties of wool fabrics. With the increase
of mTGase concentration, the initial dye exhaustion increased significantly and the time to reach the dyeing equilibrium was
shortened. It was evident that the improvement of dyeing properties was closely related to the improvement of wettability
performance of wool fabric by using transglutaminase. 相似文献
9.
Nano-TiO2 based multilayer nanocomposite films were fabricated on cationically modified woven cotton fabrics by layer-by-layer molecular
self-assembly technique. Cationization process was used to obtain cationic surface charge on cotton fabrics. Attenuated total
reflectance Fourier transform infrared spectroscopy analyses were used to verify the presence of cationic surface charge and
multilayer films deposited on the fabrics. Scanning electron microscope micrographs of poly(sodium 4-styrene sulfonate)/TiO2, nano polyurethane/TiO2, and TiO2/poly(diallyldimethylammonium chloride) multilayer films deposited on cotton fabrics were taken. With nano-TiO2 based multilayer film deposition, the protection of cotton fabrics against UV radiation is enhanced. The UV protection durability
of the self-assembled multilayer films deposited on the cotton fabrics was analyzed after 10 and 20 washing cycles at 40 °C
for 30 min. Air permeability and whiteness value analysis were performed on the untreated and multilayer film deposited cotton
fabrics. The effect of layer-by-layer deposition process on tensile strength properties of the warp and weft yarns was determined. 相似文献
10.
Anatase TiO2 nanoparticles was in-situ formed on the cotton fabric by using tetrabutyl titanate (TBT) as a precursor through the normal pressure hydrothermal method. X-ray diffraction (XRD), Scanning electron microscopy (SEM), UV visible spectra (UV-VIS), ATR-IR were used as the characterization techniques. Photocatalytic performance of TiO2 on the fabric surface was evaluated by methylene blue (MB), 4 kinds of the common living stains and three dyes under ultraviolet and visible light radiation. XRD analysis found that the TiO2 loaded on the fabric was mainly anatase crystalline phase with particle size of 6.4 nm. SEM observed that a large number of nano TiO2 particles are distributed on the fabric surface. UV-VIS test indicated that theTiO2-coated fabric possessed an obvious absorption for ultraviolet. ATR-IR analysis indicated that the nano-TiO2 possesses a strong affinity with the hydroxyl group of the cotton fabric, and the soaping tests showed that the TiO2 was firmly bonded with the fabrics. The treated fabrics have good degradation ability for MB aqueous solution, and could degrade azo, anthraquinone and phthalocyanine dyes. The order of degradation of the common life stains was: pepper oil> tea > coffee > soy sauce. 相似文献
11.
Mohammad Mirjalili 《Fibers and Polymers》2016,17(10):1579-1588
The main goal of present study was the fabrication of cotton fabric with special functions, including electrical conductivity, magnetic, antibacterial, and ultraviolet (UV) blocking. In this regard, the cotton fabric was primarily coated with graphene oxide and then reduction of graphene oxide and synthesis of magnetite nanoparticles accomplished in one step. The alkaline hydrolysis of magnetite precursors and reduction of graphene oxide was simultaneously performed using sodium hydroxide to produce reduced graphene oxide/Fe3O4 nanocomposite on the fabric surface. The prepared cotton fabrics were characterized with field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The treated fabrics with reduced graphene oxide/Fe3O4 nanocomposite displayed a low electrical resistivity i.e. 80 kΩ/sq. Furthermore, the coated fabrics showed reasonable magnetic properties due to the presence of magnetite nanoparticles on the surface of cotton fabrics. Moreover, this process imparted proper antibacterial properties and UV blocking activity to cotton samples. 相似文献
12.
TiO2 contents in yarns can influence color yield so that dyeing quality of industrial poly ethylene terephthalate (PET) yarns
can be improved through the adjustment of TiO2 contents. To evaluate the dyeing performance of color yield, the chips which included the different TiO2 contents of 330, 550, and 1,100 ppm respectively were used to produce the yarns of different TiO2 content by a spin-draft machine. The physical and structural properties of the yarns were measured to investigate effect
of the TiO2 contents on them. Dye uptake and dyeing rate were also evaluated using a colorimeter to compare the yarns having different
TiO2 contents. The experimental results showed that there were no appreciable variation in physical and structural properties
among the yarn samples and no difference were observed among the dyed fabric samples with regard to dyeing uptake and dyeing
rate. However, the color yield of dyed fabrics increased as TiO2 contents decreased in the yarns especially when the fabric samples were dyed to pale shade. The physical reasoning could
be proposed on why the yarns having low TiO2 contents appeared to have higher color yield after dyeing. 相似文献
13.
A series of CNTs/SiO2/thiazole dye hybrid materials prepared via the sol-gel process is synthesized from carbon nanotubes (CNTs) and tetraethoxysilane
with heteroaryl 4-phenyl-2-amino-thiazole dyes. Heterocyclic 4-phenyl-2-aminothiazole dyes are processed with the hydrolysis-condensation
reaction at a constant ratio of vinyltriethoxysilane and tetraethoxysilane condensed with modified CNTs in appropriate proportion
under a catalyst. The structures of the CNTs/SiO2/thiazole dye hybrid materials are characterized by Fourier transform infrared spectroscopy (FTIR). Polytrimethylene terephthalate
(PTT) fabrics are used to evaluate the morphology structure by scanning electron microscopy (SEM). SEM images show that a
uniform dyeing on the PTT fabrics to confirm the reaction of hybrid materials with PTT fabrics. The washing fastness, color
evenness, water contact angle, air permeability, electric conductivity, and weatherability of PTT fabrics dyed with CNTs/SiO2/thiazole dye hybrid materials are evaluated, with results indicating improved conductivity and water-repellent. 相似文献
14.
Antimicrobial treatments have become more important for the textile materials especially used in sportswear, activewear, and
casual wear since they can easily be contaminated by perspiration leading to bacterial growth and body odor. In this work,
antimicrobial activity of chitosan in a silica matrix on pretreated wool fabrics was studied. The pretreatment processes were
applied by two different ways (enzymatic and enzymatic+hydrogen peroxide). Afterwards chitosan solutions were applied to the
untreated samples and to the samples that were pretreated by two different ways to give antimicrobial effects. The antimicrobial
activity of wool fabrics treated in various methods was assessed before and after repeated washings (up to 10 cycles) by the
application of standard test method AATCC 147-1998. The morphology of the treated fabrics was investigated by SEM and their
characterizations were made by the FT-IR spectral analysis. Results revealed that pretreatment ways and chitosan application
methods were quite important for adsorption and diffusion of chitosan on wool fabrics and washing stability. From the SEM
images, it was clearly observed that pretreatment processes caused some degradation on the surface of the fiber; but combined
processes were found to be less degradative and more effective. 相似文献
15.
In this study, a facile method was developed to coat AgCl nanoparticles (NPs) onto knitted cotton fabrics. The AgCl NPs were characterized by ultraviolet absorption spectrum, X-ray diffraction (XRD) and dynamic laser light scattering (DLS). The AgCl NPs were coated onto cotton fabrics through a pad-dry-cure process with the assistance of 1,2,3,4- butanetetracarboxylic acid (BTCA). Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), ICP-OES analysis and energy-dispersive X-ray spectroscopy (EDX) confirmed that AgCl NPs were successfully coated onto cotton fabrics. The prepared cotton samples exhibited excellent antimicrobial activity against both Gram-positive S. aureus and Gram-negative K. pneumonia bacteria. Rat skin fibroblast cytotoxicity testing demonstrated the treated cotton fabrics to be non-toxic. The washing durability evaluation showed that the antimicrobial function of cotton fabrics was durable to washing. In addition, the wrinkle resistance of the coated cotton fabrics was improved and there was no obvious change in whiteness. 相似文献
16.
The aim of this study is to compare hard surface-adhesive properties of TiO2 nanoparticles (TNPs)-encapsulated microparticles prepared by spray drying and surface coating method. Thus, TNPs were encapsulated with chitosan by spray drying and poly(L-lysine) by surface coating method, which were selected as positively charged materials. And then, the TNPs-encapsulated microparticles were investigated by particle surface properties and adhesion properties on hydroxyapatite (HAP) surface as model for hard surface-adhesion. The characteristics of TNPs-encapsulated Chitosan microcapsules (CM) and TiO2 nanoparticles coated with cationic poly(L-lysine) polymer (TNPs-PLL) were determined with scanning electron microscope (SEM) image and zeta-potentials. The hard surface-adhesive properties on HAP surface were confirmed with SEM and whitening test. The zeta-potentials of TNPs and HAP were negative, -13 mV and -18 mV respectively, while TNPsencapsulated CM, and TNPs-PLL of positively charged polymers were positive, 13 mV and 57 mV respectively. Whitening test was carried out on model surface when shaking the samples. TNPs-PLL were adhered to HAP surface very much more than those of TNPs-encapsulated CM. Also, the change value of whiteness of the HAP surface treated with TNPs-PLL is large evidently, compared with TNPs-encapsulated CM. 相似文献
17.
The physical and mechanical characteristics of hollow polyester fibres were compared with solid polyester fibres in order
to establish their processing behaviour and performance characteristics. The effects of hollow fibres on fabric properties
were investigated by using microscopy and tests of tensile and bursting strength, pilling, abrasion resistance, water vapour
permeability, and handle. The results show that tensile strength of hollow polyester fibres and yarns are negatively affected
by the cavity inside the fibre. Hollow fibres also have higher stiffness and resistance to bending at relaxed state. Fabrics
made from hollow polyester/wool blends and pure wool fabrics show three distinguishable steps in pilling. During pilling,
hollow fibres break before being pulled fully out of the structure, leading to shorter protruding fibres. Microscopy studies
showed that the breakdown of hollow fibres started during entanglement by splitting along the helical lines between fibrils.
KES results showed that the friction between fibres and the fibre shape are the most important parameters that determine the
fabric low stress mechanical properties. However, in some aspects, the hollow structure of the fibre does not have a significant
effect. 相似文献
18.
Handle is an important factor when designing the end-uses of fabric as it is also a critical factor for purchasing decision.
In the present study, the Kawabata Evaluation System for Fabrics (KES-F) was used for measuring the fabric handle of BTCA-TiO2 treated cotton fabric with or without plasma pre-treatment. The results revealed that the BTCA-TiO2 treated cotton fabrics without plasma pre-treatment had a negative effect on tensile, shearing, compressional, and surface
properties while the bending properties were improved. On the other hand, the plasma pre-treatment improved the tensile and
compressional properties, but not the bending, shearing, and surface properties. 相似文献
19.
Cristina Canal Ricardo Molina Enric Bertran Antonio Navarro Pilar Erra 《Fibers and Polymers》2008,9(3):293-300
Knitted wool and wool/nylon blend dyed fabrics were treated with low temperature plasma (LTP) to achieve optimum shrink-resistance
without impairing surface topography, colour or fastness to washing of the fabrics. As LTP tends to impair handle of the fabrics,
both wool and wool/nylon blend fabrics were submitted to industrial softening and/or biopolymer treatments after LTP treatment,
leading to hydrophilic wool and wool/nylon blend fabrics with improved shrink-resistance without any colour changes and good
fastness to washing. The results obtained were compared with those obtained by an industrial shrink-resist treatment. 相似文献
20.
Tourmaline can enhance filtering efficiency to PM2.0 of microfiber warp-knitted mesh fabric. In this paper, microfiber warp-knitted mesh fabrics were designed with different mesh structures and mass fraction of tourmaline solution respectively. The effect of tourmaline concentration on filtering efficiency of fabrics was investigated. After the tourmaline solution, the strength of mesh fabrics and durability of tourmaline’s conglutination to the mesh fabrics were explored at the same time. The results shown that the filtering efficiency of microfiber warp-knitted mesh fabrics dealing with tourmaline was resentful. Breaking strength of fabrics decreases with increasing mass fraction of tourmaline solution. The resistant efficiency of fabrics and tourmaline adhesive on the mesh fabrics were still stable along with the increasing mass fraction of tourmaline. 相似文献