共查询到20条相似文献,搜索用时 31 毫秒
1.
Cotton fabric was modified with β-cyclodextrin (β-CD) forming inclusion complex to yield color strength, pattern sharpness, and color fastness for ink-jet printing. The modified cotton fabric was confirmed with the presence of new strong absorption peaks around 1713 cm-1 and 1243 cm-1 in FT-IR. β-CD had been covalently grafted on cotton fabric via the esterification reaction of citric acid (CTR) with cellulose and β-CD. The results indicated that printing performances of the ink-jet printed fabric were enhanced through β-CD modification. The K/S value was enhanced from 4.21 to 6.72, the width of printed line was decreased from 1.48 mm to 1.25 mm, and the color fastness was improved to 3-4 level. These improvements were due to the truncated cone structure of β-CD, which can form inclusions with water-based pigment. Meanwhile, the crease recovery performance was also improved with the aid of CTR. A comparison between the unmodified and modified cotton fabric suggested that the crease recovery angle of β-CD modified cotton fabric was increased by 25.0 % in the warp direction. Therefore, printing performance and crease recovery performance of β-CD modified and water-based pigment printed cotton fabric were enhanced remarkably. 相似文献
2.
In this paper, artificial neural network (ANN) model was used for predicting colour properties of 100 % cotton fabrics, including
colour yield (in terms of K/S value) and CIE L, a, and b values, under the influence of laser engraving process with various combination of laser processing parameters. Variables
examined in the ANN model included fibre composition, fabric density (warp and weft direction), mass of fabric, fabric thickness
and linear density of yarn (warp and weft direction). The ANN model was compared with a linear regression model where the
ANN model produced superior results in prediction of colour properties of laser engraved 100 % cotton fabrics. The relative
importance of the examined factors influencing colour properties was also investigated. The analysis revealed that laser processing
parameters played an important role in affecting the colour properties of the treated 100 % cotton fabrics. 相似文献
3.
Behcet Becerir 《Fibers and Polymers》2005,6(3):224-228
This paper focuses on the application of a novel mathematical limit approach derived forK/S values in reactive dyeing of cotton fabrics. The relation obtained from Kubelka-Munk equation is used because the Kubelka-Munk
equation is the basic relationship among fabric reflectance, fabric dye content and dyestuff characteristics. The limit approach
derived in a former paper is applied to the laboratory dyeings and the dyeing behavior of some reactive dyes on cotton knitted
fabric has been obtained. The results of the laboratory experiments are discussed using the new mathematical approach. When
the actualK/S values obtained from the dyeings and the calculatedK/S values derived by the limit approach are considered independently, it is observed that the limit relation is valid for low
dye concentration applications. When theK/S values are calculated taking theK/S value of the initial dyeing concentration (0.1 % owf) as the starting concentration by applying the result of the derived
limit approach, the calculatedK/S values fit with the ones obtained in actual dyeings. It is concluded that the novel approach presented in the paper can be
used in calculating theK/S values when the initial dyeings at low dye concentrations are carefully carried out. 相似文献
4.
PET fabric was first modified with silane coupling agent KH-560, and then was loaded with a layer of nano-scaled TiO2 particles using tetrabutyl titanate as precursor by low temperature hydrothermal method, followed by dyeing with Disperse Blue 56. The morphology, crystalline phase, chemical modification, thermal stability and optical property of PET fiber before and after treatments were studied by scanning electron microscope, X-ray diffraction, X-ray photoelectron spectroscopy, thermal gravimetric and diffuse reflectance spectrum techniques. The properties of tensile, air permeability, luster, ultraviolet (UV) protection, photocatalytic activity, K/S value and color fastness were also measured. It was found that compared with the TiO2-coated fabric without modification with KH-560, the loading of TiO2 nanoparticles on the surface of the TiO2-coated fabric modified with KH-560 was obviously improved. The pure anatase TiO2 nanoparticle was grafted onto the fiber surface. The onset decomposition temperature increased. The absorbing capability to ultraviolet radiation was enhanced. The properties of tensile, air permeability, luster, K/S value and color fastness changed slightly. The UV protection ability and photodegradation of methyl orange under UV illumination were enhanced to some extent. 相似文献
5.
This paper assesses the color difference and color strength values (K/S) obtained for eight disperse-dyed polyester fabric samples with different fabric construction parameters (weft yarn type,
weft yarn count, weft density and fabric weave) after four sets of abrasion cycles. Warp yarn type and count, warp density,
and warp yarn twist are the same for all fabrics. Fabric samples are dyed in a commercial red disperse dye (C.I. Disperse
Red 74:1) and four different abrasion cycles (2500, 5000, 7500, 10000) are used. TheK/S values of the abraided fabrics and color difference values between the control fabric (dyed but not abraided) and abraded
fabrics are calculated. The main differences in theK/S and color difference values are observed between 0–2500 abrasion cycles. The high tenacity of the polyester fibers and continuous
polyester yarns causes some fuzz but no pilling formation on the fabric surface that lead to increasedK/S values and color differences. Fiber dullness, yarn thickness, yarn density and fabric weave are concluded to have different
effects on the appearance after abrasion. 相似文献
6.
N-halamine precursor 2,2,6,6-tetramethyl piperidinol (TMP), a hindered amine light stabilizer, was bonded onto cotton fabric by using 1,2,3,4-butanetetracarboxylic acid (BTCA) as a crosslinking agent. A variety of treating conditions including TMP concentration, curing temperature and time, and catalyst were studied. The treated fabrics were characterized using FTIR spectra and scanning electron microscope (SEM). The cotton fabric treated with TMP precursor could be rendered biocidal upon exposure to dilute household bleach. The chlorinated cotton swatches showed great efficacy and inactivated 100 % of Staphylococcus aureus with 7.1 log reduction with 5 min of contact and 83.25 % of E. coli O157:H7 at 10 min of contact. In addition, the wrinkle recovery angle of the treated cotton fabrics increased from 229 ° of untreated cotton fabrics to 253 °. This study provided a practical finishing process to produce cotton fabrics with easy care and antibacterial functionalities at the same time. 相似文献
7.
Our study proposes an enzymatic scouring method for cotton fabrics using the enzyme cutinase. We established cutinase treatment
conditions for cotton fabrics from their relative activity at different pH levels, temperatures, enzyme concentrations, and
treatment times. Weight loss, moisture regain, K/S value, tensile strength, and SEM micrographs of cotton fabrics were analyzed. We determined the optimum cutinase treatment
conditions to be as follows: pH of 9.0, temperature of 50°C, cutinase concentration of 100 %, and a treatment duration time
of 60 min. We discovered that this cutinase treatment hydrolyzed the cuticle of cotton fabrics. The cutinase treatment did
not decrease the moisture regain and the K/S value. The optimum concentrations of Triton X-100 and calcium chloride, which were used as auxiliaries for cutinase treatment,
were found to be 0.5 % (v/v) and 70 mM, respectively. Some cracks were observed on the surface of the cotton fibers; however,
the tensile strength did not decrease. 相似文献
8.
In our previous research, the possibility of using chitosan in preparing the pretreatment print paste for digital ink-jet
printing for cotton fabric was investigated but the final color was not good as expected. In this paper, we modified our previous
work by applying the chitsoan separately on the cotton fabric for digital ink-jet printing. A two-bath method was thus proposed
and it was confirmed that a better color yield was achieved with this method. However, the use of chitosan reduced the tensile
strength of the digital ink-jet printed fabric slightly. 相似文献
9.
In this study, the natural pigment from sappan was used for the dyeing of wool fabrics after treatment with the protease and
transglutaminase. The influences of protease and transglutaminase on the UV/visible absorption spectrum of aqueous extract
of sappan were studied. The enzymatic modified wool was compared with non-modified wool in K/S value and fastness after direct
dyeing and mordant dyeing. It was shown that protease and transglutaminase made the absorbance at the λ
max
540 nm in visible region increase. It suggested that there might be some interaction between the enzymes and sappan dye and
the residual enzyme on wool fabric might affect the color of following dyeing. Compared to untreated wool, treatments with
protease and transglutaminase enhance K/S value of wool dyed subsequently with sappan. Modification of protease led to some decrease in wet rubbing fastness, whereas
transglutaminase had almost no influence on rubbing fastness. Enzymatic treatments have no influence on the washing fastness
for samples dyed with sappan. 相似文献
10.
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
11.
It has been considered that malic acid,α-hydroxy succinic acid, could not form crosslinks in the cellulosic materials unless activated by other polycarboxylic acids
such as butanetetracarboxylic acid or citric acid because there are only two carboxylic acids per molecule available for the
formation of one anhydride intermediate. However we found that the dicarboxylic malic acid with sodium hypophosphite catalyst
without the addition of other crosslinkers was able to improve wrinkle resistance of cotton up to 294° (dry WRA) and 285°
(wet WRA), which is a measure of crosslinking level in cotton.1H FT-NMR, FT-IR and GPC analysis indicated the in-situ formation of an trimericα, β-malic acid with a composition of 1:3 through the esterification between hydroxyl group and one of carboxylic groups in malic
acid during curing. The crosslinking of cotton was attributed to the trimericα, β-malic acid, a tetracarboxylic acid, which can form two anhydride rings during curing. The influence of crosslinking conditions
such as concentrations of malic acid and catalyst, pH of the formulation bath, and curing temperature were investigated in
terms of imparted wrinkle resistance and whiteness. The addition of reactive polyurethane resin in the formulation slightly
increased the mechanical strength retention of crosslinked fabric coupled with additional increase in wrinkle resistance. 相似文献
12.
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
13.
This study evaluated the potential application of an atmospheric plasma (AP) treatment as a pre-treatment for digital textile printing (DTP) of polyester (PET) fabrics and cotton, in order to determine its viability as an alternative to the usual chemical treatment. The surface properties of the AP-treated fabrics were examined through scanning electron microscopy (SEM) and contact angle, and the physical properties, such as electrostatic voltage and water absorbance, were tested. The properties of cotton and PET with the AP treatment were found to be dependent on number of repetitions and electric voltage. Although no remarkable surface differences were observed by SEM in the fabrics before and after treatment, the static contact angle of the PET after AP treatment was decreased from 85 ° to 24 ° at wave. In addition, the charge decay time decreased as the voltage and number of treatments increased. The absorption height of PET changed after exposure to 7 mm with increasing measurement time. The K/S with and without the AP pre-treated and DTP finished cotton was better than that with the usual chemical modification. In PET, the 0.5 kW and 1 time AP-treated specimen showed the highest K/S values. 相似文献
14.
Padma S. Vankar Rakhi Shanker Shalini Dixit Debajit Mahanta S. C. Tiwari 《Fibers and Polymers》2008,9(2):121-127
Symplocos spicata (local name: Dom sheng) belonging to Family Symplococeae produces yellowish brown natural dye which has been used for dyeing textiles since ancient times by the Monpas tribe of Arunachal
Pradesh. Symplocos spicata (Dom Sheng) was found in the Lumla area of Tawang district. Leaves of the plant are used by the Monpas and Tibetans for extraction
of dye. Innovative sonicator dyeing with S. spicata showed that pretreatment with 2–4% metal mordant of the weight of the fabric is optimum showing very good fastness properties
for dyed natural polymers such as cotton, wool, and silk. CIELab and K/S of the dyed fabrics were also evaluated. The superiority of sonicator dyeing over conventional dyeing has been established
through this study. 相似文献
15.
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
16.
Mikyung Kim Seokhan Yoon Taekyeong Kim Jin-seok Bae Namsik Yoon 《Fibers and Polymers》2006,7(4):352-357
The cotton fabrics were pretreated by sodium 2-(2,3-dibromopropionylamino)-5-(4,6-dichloro-1,3,5-triazinylamino)-benzenesulfonate
(DBDCBS) at alkaline condition of room temperature and then dyed with four disperse dyes having amino groups (C.I. Disperse Yellow
9, C.I. Disperse Red 11, C.I. Disperse Blue 56 and C.I. Disperse Violet 1) at acidic condition of high temperature. A novel
hetero-bifunctional bridge compound,DBDCBS, has two reactive groups such as dichloro-s-triazinyl group andα, β-dibromopropionylamido group. The first has reactivity towards hydroxy group of cellulosic fiber and the second shows reactivity
towards amino groups of disperse dye containing amino groups. The results indicate that it is possible to dye polyester/cotton
blend at one-bath dyeing using one kind of disperse dye containing amino groups. Therefore, two kinds of dyeing methods such
as two-bath process one-bath dyeing and one-bath process one-bath dyeing were investigated and their dyeabilities were compared.
The differences between these two methods were negligibly small so that perfect one-bath one-step dyeing of polyester/cotton
blend by one kind of disperse dye was achieved. 相似文献
17.
Jackfruit latex gum was applied to pigment printing of cotton fabrics as a binder and their printing properties were compared with those of conventional pigment printing. The printing performances were influenced by the content of Jackfruit latex gum in the binder and the curing conditions. Based on a series of experiments, the pigment printing paste recipe and the process were optimized, considering color fastness, color strength, and fabric handle properties compared with those of the synthetic binder. The use of combined binder containing Jackfruit latex gum for pigment printing showed reasonable printing performances and offers an option for replacing synthetic binders, which cause adverse effect on human health and environments. 相似文献
18.
P. Ganesan T. Ramachandran T. Karthik V. S. Prem Anand T. Gowthaman 《Fibers and Polymers》2013,14(10):1663-1673
The focus of the present research work is on evaluation of the antimicrobial finished textile material from the extract of Aerva lanata plant and optimization of process parameters to get the maximum antimicrobial efficiency. The microencapsulated extracts of Aerva lanata plant (leaves and stalk) using citric acid as a cross linking agent were applied on plain-woven cotton fabric by pad-dry-cure method. The Aerva lanata extract treated fabric samples were tested for antibacterial activity against bacterial strains of Staphylococcus aureus and Escherichia coli under Agar diffusion test and AATCC 100–2004. It is observed that the treated cotton fabric shows a clear microbial resistance of about 19–25 mm zone of inhibition in the agar diffusion test against the above-mentioned bacterial strains. The treated samples showed 80 % of reduction against Staphylococcus aureus and 70 % reduction against Escherichia coli as per AATCC (100–2004). Process parameters like concentration of extract, citric acid and curing temperature were optimized using Box-Behnken design for better performance of antimicrobial treated material. The optimum values of 21.14 % extract concentration, 2.39 % crosslinking agent and 101.2 °C curing temperature were determined. 相似文献
19.
Maleic acid (MA) and itaconic acid (IA) used as crosslinking agents for cotton fabrics are more cost-effective than the most efficient nonformaldehyde crosslinker 1,2,3,4-butanetetracarboxylic acid (BTCA), but poor stability of finishing bath and fabric yellowing are the main disadvantage of MA/IA in situ polymerization and crosslinking system. In this research, the application performance improvement of MA/IA crosslinking system for cotton fabrics was studied. Replacement of the widely used sodium hypophosphite (SHP) with potassium hypophosphite (PHP) as catalyst allowed for obtaining a stable finishing bath under ambient temperature and led to improved final durable press (DP) performance of the treated fabrics. The influences of PHP concentration, curing temperature, and curing time on the performance of finished fabrics were investigated. Cotton fabrics treated by MA/IA/PHP crosslinking system exhibited comparable DP performance and laundering durability to that finished with BTCA. To address the fabric yellowing problem, the residual MA and IA attached on the treated fabrics by single-ended ester linkage was determined by HPLC. The data indicated that the degree of fabric yellowing was linearly related to the unpolymerized carboxylic acid MA and IA concentration on the treated fabrics. Several approaches were explored to improve the whiteness of MA/IA/PHP crosslinked fabrics. It was found that steam drying with 30-50 % humidity could effectively improve fabric whiteness. The findings of this study have significant implications for better application of unsaturated polycarboxylic acids in crosslinking of cellulose. 相似文献
20.
A novel nano-silver colloidal solution was prepared in one step by mixing AgNO3 aqueous solution and an amino-terminated hyperbranched polymer (HBP-NH2) aqueous solution under vigorous stirring at room temperature. All results of Dynamic Light Scattering (DLS), Transmission
Electron Microscopy (TEM) and UV/Visible Absorption Spectrophotometry indicated that silver nanoparticles had been formed
in colloidal solution. Cotton fabric was treated with nano-silver colloid by an impregnation method to provide the cotton
fabric with antibacterial properties. The whiteness, silver content, antibacterial activity and washing durability of the
silver-treated fabrics were determined. The results indicated that the silver-treated cotton fabric showed 99.01 % bacterial
reduction of Staphylococcus aureus and 99.26 % bacterial reduction of Escherichia coli while the silver content on cotton was about 88 mg/kg. The antimicrobial activity of the silver-treated cotton fabric was
maintained at over 98.77 % reduction level even after being exposed to 20 consecutive home laundering conditions. In addition,
the results of scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) confirmed that silver nanoparticles
have been fixed and well dispersed on cotton fabrics’ surface and the major state of the silver presented on the surface was
Ag0. 相似文献