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1.
This paper reports on an antimicrobial finishing for polyamide with high washfastness. As antimicrobial agent modified silica sols containing silver components are used as coating agent and are applied to the polyamide fabric by using a semi-industrial procedure. The antimicrobial properties of coated polyamide fabrics are determined against the bacteria E. coli. Significant antimicrobial effects are observed even after 40 washing cycles. The amount of silver on the polyamide fabrics was measured by using ICP-OES. Besides this, samples are investigated by means of UV/Vis-spectroscopy and scanning electron microscopy. Furthermore textile properties as, e.g., air permeability and mechanical properties were measured. Due to high antimicrobial effect and the strong washfastness of this finishing, this reported method could be of high interest for industrial production processes. 相似文献
2.
The high light reflection of multilayer TiO2/SiO2 film was prepared on the fabric by the sol-gel process. The size of titania and silica particles in hydrosol was analyzed by Nanosizer, and the morphology of TiO2/SiO2 multilayer film on the fabric was characterized by SEM. The reflection spectra of the samples were tested accordingly, and it showed that the reflection of the fabric coated by multilayer film was higher than that of the monolayer film. Moreover, the reflection increased with the increase of layer number. For sunlight fastness testing, the fabric color changed less with the increase of layer number, which showed the multilayer film on the fabric can improve the light resistance of the fabric. The mechanical property, the bending property and air permeability testing results showed that there was little change for the coated fabric compared with the original fabric. 相似文献
3.
In this study, a hybrid silica sol-gel embedded with a photochromic dye has been applied to wool fabric to form a photochromic
coating. The treated wool fabrics showed very quick photochromic response. Five different silanes have been used as the silica
precursor, and the resultant coating showed slight differences in photochromic performance, fabric washing fastness, and surface
hydrophilicity. However, the silica type had a considerable influence on fabric handle property. The silica matrix from the
silane containing a long alkyl chain had a very little influence on the fabric handle and better photochromic performance
than those from other different silane precursors. 相似文献
4.
This study was carried out to optimize dyeing conditions of unripe Citrus Unshiu extract on silk fabric and to evaluate antimicrobial
activity of the dyed fabric for its potential use as a functional natural dye. Unripe fruits of Citrus Unshiu in Jeju Island,
Korea, extracted in 80 % Ethanol solution to final solid dye powder were dyed on silk fabric under a variety of conditions
such as dye bath concentrations, temperature, and dyeing duration together with mordanting. Dyeing fastness properties to
washing, rubbing, perspiration, and light were tested and the antimicrobial activities of the dyed fabric against Staphylococcus
aureus and Klebsiella pneumoniae were investigated quantitatively. As results, the fabric showed the maximum dye uptake (K/S) under the conditions of 80 °C for temperature, 30 min for duration, and 600 % (o.w.f.) for dye concentration. Both pre-
and post-mordanting seemed not to be effective on increasing K/S values of the dyed silk fabrics under the optimum dyeing conditions. Fastness ratings to washing, rubbing, and perspiration
were all very good (4–5 grades) for both 300 and 600 % dyed silk fabrics. Excellent antimicrobial activities over 99 % reduction
rate against two both bacteria were exhibited for all of dyed fabrics undergone more than 300 % of dye concentration. From
these results, it was concluded that the dye concentration of 300 % of unripe Citrus Unshiu could be employed to produce antimicrobial
silk fabric. Furthermore, to get more saturated shades on the fabric by the citrus, higher dye concentration such as 600 %
was available as well. 相似文献
5.
Tencel Jacquard fabric is one of the eco-fabrics used for underwear, sportswear, bedclothes, clothes for aged people, and
hospital textiles. It is popular for these uses because it is easy to process into yarns and fabrics alone or in blends, very
stable in washing and drying, thermally stable, and easy to dye with deep vibrant colors using direct, reactive, or vat dyes.
In order to provide antimicrobial properties for Tencel Jacquard fabrics, they were treated with ginkgo biloba extract and
silicon softener using two different processes so the results could be compared. One of the processes treated the fabrics
with ginkgo biloba extract and silicon softener simultaneously, and the other process treated the fabrics with these agents
sequentially. The treated Tencel Jacquard fabrics were characterized by scanning electron microscopy, and their antimicrobial
properties were evaluated. In addition, water repellency, air permeability, water vapor permeability, and yellowness were
measured. It was observed that the ginkgo biloba extract and silicon softener were present on the surface of the treated fibers,
and the quantity of these agents before and after laundering was proportional to the measured antimicrobial activity of the
fabrics before and after laundering. Fabrics treated with both agents had stronger water/oil repellency than fabrics treated
with only ginkgo biloba extract. As the quantities of the two treating agents on fabrics were increased, their air permeability
and water vapor permeability decreased. No significant changes were observed for yellowness based on the amounts of treating
agents applied. From these results, it is expected that Tencel fabrics treated with ginkgo biloba extract and silicon softener
are excellent for use as bedclothes. 相似文献
6.
In the field of textiles, introducing pH-sensitive dyes onto fibrous materials is a promising approach for the development of flexible sensor. In this study, poly(ethylene terephthalate) (PET) textile surface with halochromic properties was fabricated by plasma-assisted sol-gel coating, followed by immobilization of two different azo pH-indicator dyes; namely Brilliant yellow and Congo red by conventional printing technique of fabrics. 3-aminopropyltriethoxysilane (APTES) was used as a coupling agent for attaching the pH-sensitive dyes through its terminal amines. The surface immobilization of APTES on PET fabric was conducted by the pad-dry-cure method. Moreover, the influence of oxygen plasma pre-treatment and the method of post-treatment either by oxygen plasma or by thermal treatment on the stability of sol-gel based matrix was investigated. The morphology and chemistry of 3-aminopropyltriethoxysilane coated PET surfaces were examined by using surface sensitive methods including electrokinetic and time-dependent contact angle measurements as well as X-ray photoelectron spectroscopy (XPS). In addition, fastness tests of the printed fabrics and color strength were carried out to assess the effectiveness of the fabric surface modification. Results indicate that sol-gel matrix exhibited a more stability by thermal post-treatment at 150 C for 5 min. Also, the results revealed that the printed fabrics with halochromic properties demonstrated sufficient stability against leaching by washing. The current work opens up a novel opportunity to develop flexible sensors based on fibrous materials, which have the potential to be employed in variable industrial applications. 相似文献
7.
Jaewoong Lee Royall M. Broughton Akin Akdag S. D. Worley Tung S. Huang 《Fibers and Polymers》2007,8(2):148-154
N-halamines serve as important antimicrobial agents. Development of this class of compounds has been shown to provide benefits
especially from a biocidal point of view. A novels-triazine-basedN-heterocycle, dichloro-m-aminophenyl-hydantoinyl-s-triazine (DAPHT), which could be rendered antimicrobial through exposure to diluted chlorine bleach, was synthesized and
characterized by1H NMR,13C NMR, and FT-IR. A finishing method was used to apply theN-halamine precursor onto cotton fabric, and the optimum conditions for finishing were investigated. The DAPHT-treated cotton
fabric had durable antimicrobial properties up to 50 standard washing cycles and was rechargeable under normal laundry/bleaching
conditions. The antimicrobial efficacy against Gram-positive and Gram-negative bacteria was demonstrated. 相似文献
8.
In this study, durable antibacterial cotton fabrics were prepared by a simple two-step impregnation method. Firstly, thioglycolic acid (TGA) was grafted onto cotton fabric via esterification with the hydroxyl groups of cellulose, then silver nanoparticles (Ag NPs) were immobilized on the cotton fabric surface via coordination bonds with the TGA thiol groups. As a result, the mean size of Ag NPs coating on the cotton fabric is around 74 nm, and these functionalized cotton fabrics show superior antibacterial properties and excellent laundering durability. After withstand 50 laundering cycles, the obtained cotton fabrics still showed outstanding bacterial reduction rates (BR) against both S. aureus and E. coli, and the rates are all higher than 97 %. Therefore, this method to prepare antibacterial cotton fabric shows great potential applications in socks, cosmetic, and medical textiles. 相似文献
9.
Necla Yaman 《Fibers and Polymers》2009,10(4):413-418
Organic-inorganic hybrid coatings containing phosphoric acid (PA) bonded to the organic-inorganic network were prepared from
tetraethoxysilane (TEOS) using a sol-gel process. The effect of sol-gel phosphate-based flame retardant coating on polyacrylonitrile
fabric properties (flammability, stiffness, and strength) was investigated. Sample characterization of the coated samples
were investigated using differential thermal/thermogravimetric analysis (DTA/TGA), Fourier transform infrared spectroscopy
(FTIR), X-ray diffractometer (XRD), and scanning electron microscopy (SEM). The results showed that hybrid coating on the
polyacrylonitrile fabrics influenced fabric stiffness, strength, and flammability. And also, flammability of the coated samples
after washing cycles was investigated, and the flame retardancy properties of the samples after 10 repeated washings were
not completely lost. 相似文献
10.
R. Bagherzadeh M. Montazer M. Latifi M. Sheikhzadeh M. Sattari 《Fibers and Polymers》2007,8(4):386-392
In order to impart barrier properties against water and microorganisms on breathable three dimensional spacer fabrics as medical
or technical textiles, fabric samples were treated with two water repellent agents and a quaternary ammonium salt namely cetyltrimethylammonium
bromide (CTAB), using pad-dry-cure method. Two different water repellent agents based on hydrocarbon and acrylic copolymer
were used. The water repellent property of samples was tested by Bundesmann and contact angle tests. Antimicrobial activity
of samples was analyzed quantitatively according to AATCC 100. Simultaneous finishing of samples was done with 3 % CTAB and
4 % fluoroalkyl acrylic copolymer. To study the effect of various treatments on comfort related properties, air and water
vapor permeability, water repellency and compression were measured. The results showed that the antimicrobial and water repellent
spacer fabrics can be achieved applying selected material without significant changes on their comfort properties. Also a
regression model was presented to predict the water vapour permeability of knitted spacer fabrics based on course density
(CPC) changing. 相似文献
11.
A quaternary ammonium compound, 2-hydroxypropyltrimethylammonium chloride amino-terminated hyper-branched polymer (HBP-HTC),
was synthesized from an amino-terminated hyperbranched polymer (HBP-NH2) and 2,3-epoxypropyltrimethylammonium chloride (EPTAC) as a grafting agent in aqueous solution. Its molecular weight and
possible structure were characterized by gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FTIR)
and nuclear magnetic resonance spectroscopy (1H-NMR). The cotton fabric was treated with 2 g/l HBP-HTC aqueous solution for 30 min at room temperature to provide the cotton fabric with antimicrobial properties. The antimicrobial
activities of the HBP-HTC aqueous solutions and the HBP-HTC treated cotton fabrics were evaluated quantitatively. The results
indicated that the HBP-HTC treated cotton fabric showed 99.92 % reduction of bacteria S. aureus and 99.66 % reduction of bacteria E. coli, respectively. The antimicrobial activities of the HBP-HTC treated cotton fabrics were maintained at over 99.00 % reduction
level even after being exposed to 20 consecutive home laundering conditions. 相似文献
12.
We report herein a superhyrodrophobic poly(ethylene terephthalate) (PET) fabric prepared through a biomimetic method of the
Lotus effect. To attain the Lotus effect on the PET fabrics, physical roughness and chemical hydrophobicity were controlled
by adopting silica nanoparticles and a commercial water-repellent agent, respectively. For this, narrow-size distributed silica
nano-particles were prepared by a sol-gel process. The water contact angle on PET fabric treated with both silica nanoparticles
and water-repellent agent reached 158°, which was much higher than 137° reached by the fabric treated with the water-repellent
agent only. 相似文献
13.
With the growing demand for comfortable, clean and hygienic textile goods, an urgent need for production of antimicrobial textiles has arisen. In this work, synthesis of nano titanium oxide has been done by sol gel method and the effect of dispersing agents with varying ionic character during synthesis on the particle size of the synthesised nano particles in terms of crystallinity and particle size was studied. It was observed that cationic as well as non-ionic dispersing agents led to reduction in size of the titania particles produced whereas anionic dispersing agent led to increase in the particle size. This method provides a simple method for reduction in size of titanium dioxide particles with a minor modification of a standard process. The synthesized nano titanium dioxide particles were successfully applied onto cotton to obtain Antimicrobial activity. The Durability of the antimicrobial activity was upto 10 washes with the help of Binder. The effect of the application of nano titanium oxide on the physical properties of the substrate, such as tensile strength, bending length, and crease recovery angle has been analysed. 相似文献
14.
An amino-terminated hyperbranched polymer (HBP-NH2), synthesized from methyl acrylate and diethylene tri-amine by polycondensation, was applied to treat cotton samples by a
pad-dry-cure method. Physical properties, salt-free dye-ability, antimicrobial activity, and antiultraviolet property of the
treated cotton samples were tested. The crystallinity and mechanical properties, including breaking strength, breaking elongation,
and Young’s modulus of the treated cotton fibers, increased slightly in comparison with those of the untreated cotton fibers.
The thermal stability and the moisture regain were also improved slightly. Dyed with direct dyes and reactive dyes in the
absence of the electrolytes, the treated cotton fabric showed similar or higher color strength compared with the untreated
cotton fabric in conventional dyeing. The treated cotton fabric can also be dyed with acid dyes effectively. In addition,
the treated cotton fabric showed good antimicrobial activities against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). The study of the antiultraviolet properties of the treated cotton fabric indicated that the HBP-NH2 contributed to the reduction of UV transmission and the increase of UPF. 相似文献
15.
By incorporating organic-inorganic nano-hybridization into wet phase inversion coating-forming method, a novel antimicrobial
polyurethane synthetic leather coating with in-situ generated nano-TiO2 (PUT) was prepared. The antibacterial activity against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Micrococcus luteus, antifungal activity against Aspergillus niger and toxicity of this PUT coating were investigated respectively. Experimental results showed that the antimicrobial activity
of the PUT coating increased with increasing nano-TiO2 concentration. Low nano-TiO2 concentration (≤0.50 wt%) resulted in negligible or limited antimicrobial activity. When the nano-TiO2 concentration increased up to 0.75 and 1.00 wt%, the antibacterial activity of the PUT coating exceeded 82 and 93 % respectively,
and no Aspergillus niger growth was observed on the coating surface within 28 days. Cell culture assay indicated that the PUT coating had no detrimental
effect on the morphologies and proliferation rate of normal human dermal fibroblasts, which indicated a non-toxic and skin-friendly
characteristic. According to these results, the PUT coating was capable of reducing the risk of microbial contamination while
remained skin-friendly to wearers. More importantly, the organic-inorganic nano-hybridization technique developed in this
study was carried out simultaneously during the established wet phase inversion coating-forming method for PU leather manufacture,
which promised its possible application on an industrial scale. 相似文献
16.
Nika Veronovski Andreja Rudolf Majda Sfiligoj Smole Tatjana Kreže Jelka Geršak 《Fibers and Polymers》2009,10(4):551-556
Self-cleaning surfaces based on photocatalysis are an extremely promising nano-technological field of extensive research and
development. Recently comprehensive research work has been performed to evaluate the optical, photocatalytic and antimicrobial
properties of TiO2 nano-particles and composites thereof. The aim of this study was to obtain self-cleaning properties for regenerate cellulose
surfaces by nano-modification, using TiO2 nano-coating and to define the impact of the modification on fabrics end-use properties. Two different modified fabrics with
self-cleaning effect were prepared and analysed, i.e. the modification efficiency was determined. In addition, the influence
of fibre modification on several textile properties was determined. However, a soft handle, good appearance and some other
surface properties accompanied by appropriate mechanical properties represent the basis for a high quality fabric therefore
the influence of the modification procedure on textiles handle was studied. 相似文献
17.
Graphene is classified as a carbon-based material. Structurally, graphene is made up of carbon-based two-dimensional atomic crystals and a one atom thick planar sheet of sp2-bonded carbon atoms. This sort of arrangement in graphene makes it a unique material with exceptional mechanical, physicochemical, thermal, electrical, optical, and biomedical properties. Methods for graphene-based fabric production mainly use graphene-based materials such as graphene (G), graphene oxide (GO), and reduced graphene oxide (rGO) coated on fabric or yarn. Waterborne polyurethane (WPU) is one of the most rapidly developing and active branches of polyurethane chemistry. More and more attention is being paid to graphene-coated fabrics owing to their low temperature flexibility, the presence of zero or very few VOCs (volatile organic compounds), water resistance, pH stability, superior solvent resistance, excellent weathering resistance, and desirable chemical and mechanical properties. It is used as a coating agent or adhesive for fibers, textiles, and leather. Also, graphene-containing materials have been used to enhance the properties of WPU. In this study, graphene/WPU composite solution and film was prepared to conduct basic research for developing electrical heating textiles which is not harmful to the human body, flexible and excellent in electrical properties. Graphene/WPU composite solutions were prepared with a graphene content of 0, 2, 4, 8, and 16 wt%, and graphene/WPU film was prepared with solution casting method. The graphene contents were analyzed for their surface morphology, electrical properties, and electrical heating properties. 相似文献
18.
Plasma treatment of textiles is becoming more and more popular as a surface modification technique. It not only changes the
outermost layer of a material without interfering with the bulk properties but also offers the advantage of greater chemical
flexibility to obtain multifunctional textiles. Inkjet printing is becoming increasingly important and popular for the printing
of textiles. When polyester fabric is inkjet printed with pigment-based inks, the printed patterns have poor color yield and
easily bleeding. As a result, the fabric requires pretreatment prior to the stage of ink-jet printing. In the present study
the polyester fabric was printed with magenta pigment ink after radio frequency O2 plasma surface-treatment. At such condition, polyester fabric could obtain the effects of features with enhanced color yield
and excellent pattern sharpness. The results showed that there were better patterns when the polyester fabric was treated
for 9 min at a working pressure of 40 Pa and a working power 80 W. SEM images indicated that radio frequency oxygen plasma
induced modifications to the surface of polyester fabric with more micro pits. Water absorption time measurement showed that
the hydrophilicity of polyester fabric was remarkably improved after treatment. Anti-bleeding performance of the fabric was
improved greatly, too. Therefore, radio frequency O2 plasma treatment with the ink-jet printing technique could improve the final printed properties of polyester fabric. 相似文献
19.
Akbar Khoddami Shima S. Shokohi Mohammad Morshed Dariush Abedi 《Fibers and Polymers》2011,12(5):635-641
Textiles, especially those made of natural fibers, are suitable medium for the growth of microorganisms which causes disease
transmission, stink, colorful spots, and reduction in fabric strength. This research focuses on the antimicrobial finishing
of cotton fabrics using colloidal solution of silver nanoparticles. Due to the difficulties of adding a new step to the finishing
process of cotton textiles, efforts have been made to combine the antimicrobial treatment with the conventional finishing
processes. For this purpose two chemical finishes of Fixapret ECO as a crosslinking agent and Cellofix ME as a resin former
have been used in anti crease finishing of cotton fabric and their effects were evaluated. The properties of the samples have
been investigated by measuring the resistant of samples against bacteria, crease recovery angle, abrasion, and washing fastness.
The results showed that treated samples by pad-dry method have the best antibacterial effect with a direct relation between
the increase in drying temperature and antibacterial properties. However, the washing and abrasion fastness were not at the
acceptable level. Co-application of the colloidal solution of silver nanoparticles with the crease resistant materials improved
both fastness properties while at the same time limited the direct contact between the nanoparticles and the bacteria so the
antibacterial efficiency was reduced. Subsequently, it was concluded that the antibacterial finishing method should be selected
according to the end uses. In addition, antibacterial treatment could be one of the multi-purpose finishes for cotton fabric. 相似文献
20.
Acrylic fabric was treated with direct dyes in combination with copper and zinc sulfates as mordanting agents and then tested
for their antimicrobial activity against Gram-positive and Gram-negative bacteria. The metal salts used were also studied
for their likely effects on the antimicrobial property of fabrics dyed with C.I. Direct Yellow 12, C.I. Direct Red 23, C.I.
Direct Red 31, and C.I. Direct Black 38. Untreated (control) acrylic fabric exhibited no antibacterial behavior whilst dyed
and mordanted fabrics revealed considerable antimicrobial properties. It was found that the fabric treated with C.I. Direct
Yellow 12 and copper sulfate as mordant achieved the highest antimicrobial activity with good washing fastness. Finally, FT-IR
analysis, light, and washing fastnesses of the treated samples were evaluated. 相似文献