Dye Ability Research Articles

Fiber, polyamide 6, Polyethylene, micro fibril, dye ability.

fiber, polyamide 6, Polyethylene, micro fibril, dye ability.

Study on properties and dye ability of PA6/PE composite

Study on properties and dye ability of PA6/PE composite

Effect of Dye Dispersion Preparation on Disperse Dyeing Performance on Polyester Fabric

The effect of dye dispersion preparation prior to dyeing on the dyeing ability of the disperse dye on polyester fabric was studied. The influence of sodium laurylsulphate (SLS) concentrations and the homogenization process was determined. The optimum SLS concentration for dyeing observed in this study was 0.01 M. The color yield of the dye passing through the homogenization process on polyester fabric was higher than that from the conventional dye preparation. Homogenization was also found to enhance disperse dyeability at a lower dyeing temperature. It infers that the dyeing process could be done at a lower temperature. The dyeing temperature could be as low as 110oC in the presence of homogenization. The effect of homogenization on the dyeability at different dyeing times was also examined.

Eco‐friendly grafting of natural biopolymer chitosan onto acylated wool fabrics using ultrasonic and study its properties

AbstractThe use of ultrasonic for accelerating the chemical and physical processes of wool has gained high importance. This study aims to develop a method for reducing the energy and material consumption and decreasing fiber damage. Ultrasonic equipment (20 kHz) was used for grafting chitosan to wool fabric. Experiments were carried out under different times and chitosan concentration. The results showed using this technique decreases the time required for grafting chitosan onto wool which is less than the other procedures. Differential scanning calorimetry, Fourier transform infra‐red, and weight gain analyses provided evidence that chitosan was grafted onto the acylated wool through the formation of new covalent bonds in a short time. Scanning electron microscope was used to study the morphology of wool samples before and after modification. The dyeing of the chitosan grafted‐acylated wool fabrics indicates higher dye ability and lower shrinkage compared to the acylated and raw wool samples. The findings of this study support the potential of using ultrasonic as a friendly environment method for grafting chitosan onto wool with enhanced dye ability and reduced shrinkage properties. The grafted samples showed good antibacterial properties against Staphylococcus aureus as gram‐positive and Pseudomonas aeruginosa as gram negative bacteria. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

Synthesis and dyeing performance of bisazo disperse dyes based on 3-[4-(4-amino-2-chlorophenoxy)anilino]phenol

The present communication aims to develop bisazo disperse dyes based on 3-[4-(4-amino-2-chlorophenoxy)anilino]phenol (DAP) both as a coupling component as well as a diazonium salt. Coupling reaction of DAP was carried out with a diazonium salt of 4-aminoacetanilide to yield a monoazo disperse dye, and then it was further used as a diazonium salt and coupled with a different aromatic phenol to synthesize bisazo disperse dyes. All the disperse dyes were characterized by elemental analysis, IR, NMR and UV–Visible spectral studies with a view to determine their chemical structure. The dyeing ability of these bisazo disperse dyes has been evaluated in terms of their dyeing behavior and fastness properties on different fabrics.

Synthesis and Application of New Ureido Reactive Dyes

New disazo and polyazo ureido reactive dyes incorporating different reactive systems were synthesized and applied to cotton fabric by the exhaust dyeing method. Different factors affecting the dye ability and fastness properties of such dyes are investigated. Bis(monochlorotriazine) reactive dyes displayed higher primary exhaustion values compared to those obtained with bis(sulphatoethysulphone) and bis(monochlorotriazine/sulphatoethysulphone) reactive dyes under different neutral exhaustion conditions. The results obtained indicate that the fixation efficiencies of these dyes were higher than those of dyes incorporating the bis(dichlorotriazine) reactive system. The results assessed for alkaline exhaust dyeing indicate that the bis(monochlorotriazine/sulphatoethylsulphone) dye was less sensitive to the variation in fixation temperatures than the other reactive dyes. The fastness properties of the ureido reactive dyes were fair to good. The improved dyeing performance of such type of ureido reactive dyes should lead to the design of reactive dyes with good application and fastness properties on cotton fabric, and provide practical solutions for low-salt dyeing. The present study of synthesis of disazo and polyazo ureido reactive dyes of high molecular structure, and its application to cotton fabric by the exhaust dyeing method is novel and could be applied in the industry.

Dye Uptake and Thermal Behavior of Fibre Grade PET Containing Boltorn H40 as a Nanomaterial

In this work, various loads of nanomaterials and aliphatic dendritic polymerswere mixed with flbre grade PET (Polyethylene terephthalate) to study its dye ability, thermal and thermal-mechanical properties. A twin screw extruder equipped with sheet (proflle) die was used for mixing the compounds. Thermal behaviour of the neat PET and the compounded sheet samples were studied using difierential scanning calorimeter and dynamic mechanical thermal analysis. It was observed that the Tg of samples decreased gradually by increasing the load of Boltorn H40 as a nanomaterial additive while the Tm remained almost the same. The difierence between the glass transition temperature for neat PET and the compounded sample including 3% additive was about seven degrees. In spite of the decline in Tg, the moduli of samples containing additive increased as revealed by DMTA analysis. The presence of this dendritic polymer in compounded PET acted as a cross linking or antiplastisizing agent and made the flbre grade PET compounds more compact than pure PET. So the disperse dye molecules neither were able to stay between the molecules of compounded PET nor were able to trap between the dendritic branches.

Synthesis of graft terpolymers by addition reaction of amino-terminated polyether to poly(methacrylate)s bearing five-membered cyclic dithiocarbonate moieties and application of the graft terpolymers as modifiers for wool

Graft terpolymers bearing polyether side chains and poly(methacrylate) stems were synthesized by the graft-onto reaction of monoamino-terminated poly(PO9-co-EO1) to poly{[5-(methacryloyloxy)methyl-1,3-oxathiolane-2-thione]-co-n-butyl methacrylate} [poly(DTCMMA-co-BuMA)]. The grafting reaction proceeded via the nucleophilic addition of the terminal amino groups to the five-membered cyclic dithiocarbonate moieties giving thiol moieties, although the grafting efficiency was low (9–34%) due to the steric hindrance of the side chains. The Tg values of the poly{[DTCMMA-graft-poly(PO9-co-EO1)]-co-BuMA} ranged 27–47 °C, depending on the amounts of flexible poly(PO9-co-EO1) chains introduced lowering the Tg values. Poly{[DTCMMA-graft-poly(PO9-co-EO1)]-co-BuMA}s bearing thiol groups were applied for the modification of wool via the disulfide exchange reaction. The modified wool had better dye ability toward a pigment from safflower than the original wool owing to the hydrophilic nature of poly{[DTCMMA-graft-poly(PO9-co-EO1)]-co-BuMA} introduced. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012

The Effect of Plasma Sputtering on Dye Ability of the Polyester/Wool Blends Fabrics

In this paper, the dye ability of polyester/wool fabrics after plasma sputtering treatment was investigated. The polyester/wool fabrics were sputtered by copper particles. The natural dye (madder and weld), metal complex and disperse dyes were used for dyeing at the boil point. The Scanning Electron Microscope (SEM) was applied for morphological study and the elemental analysis was studied by the Energy Dispersive X-Ray (EDX). Results were monitored by using reflectance spectrophotometer analyses. The results show that, the dye ability of the polyester/ wool fabrics after plasma sputtering is improved and this effect is more pronounced for natural dyes. This study may offer a way to achieve better dye ability of polyester/wool blend fabrics.

Physical Properties and Dyeing Behavior of the Hollow-Triangle Nylon6 Fiber

The hollow-triangle PA6 composite shaped fiber produced by high-speed spinning with semi-dull polyamide 6 chips was designed and developed in our lab. Both the morphological structure and the rebound resilience of the fiber were observed and analyzed. Meanwhile, the weak acid, neutral and disperse dyes were applied to in the dyeing test. The results showed that the hollow-triangle fiber had a high degree of profile and good bulkiness. Furthermore, the immediate elastic recovery and total elastic recovery rate of the fiber were large. When stretched by 5%, the immediate elastic deformation of this fiber was 86.4% and its elastic recover rate was up to 100%, which is obviously better than that of the general PA6 fiber. Besides, the dyeing ability of the hollow-triangle PA6 fiber was nearly the same as that of the general one when it was dyed with different dyes under the normal technical conditions.

Preparation, characterization, and functional analysis of zinc oxide nanoparticle-coated cotton fabric for antibacterial efficacy

Nanotechnology is an emerging interdisciplinary technology and nanostructures capable of enhancing the physical properties of conventional textiles in areas such as antimicrobial properties, water repellence, soil resistance, antistatic, anti-infrared and flame-retardant properties, dye ability, color fastness, and strength of textile materials. The studies were carried out in order to fine tune the preparation of zinc oxide nanoparticles (NPs) for special applications. Soluble starch (stabilizing agent), zinc nitrate and sodium hydroxide (precursors) were used for the preparation of zinc oxide NPs by wet chemical method. The synthesized NPs were coated on cotton fabric (plain weave), and the antibacterial property of the treated fabric was analyzed. Fourier transform infrared spectroscopic analysis, scanning electron microscopy, and physical and chemical characterization were employed to determine the phase and morphology of the final nanoparticle-coated fabric. The results indicated that 2% zinc oxide nanoparticle (200 nm) -coated fabric have high antibacterial efficiency (99.9% against Staphylococcus aureus and 80% against Escherichia coli) and upon washing the coated fabric (five hand washes), the antibacterial activity was found to be 98% against S. aureus and 75% against Escherichia coli.

Study on the Dyeing Behavior of Wool Fiber Treated with Nano-SiO<sub>2</sub>/Ag Antibacterial Agent

Wool fiber was firstly pretreated by nano-SiO2/Ag antibacterial agent, and then dyed with an acid dyes at low temperature by ultrasonic dyeing. Many factors had an important influence on the dye ability and the antibacterial behavior during the dyeing process of antibacterial wool fiber. The experimental results indicate that the dye-takeup rates of antibacterial wool fiber were enhanced with the increase of the concentration of nano-SiO2/Ag, the dyeing temperature, the dyeing time and the ultrasonic frequency (less than 60Hz). However, the antibacterial ratios of wool fiber were declined in the impact of these factors other than the concentration of antibacterial agent.

Research on Photoelectric Properties of Nanowires Doped DSSC

TiO2light anode film is one of the most important part of DSSC. But the microscopic structure of nano-Tio2is not perfect,it exists the problem such as big or small size, excessive internal, insufficient specific surface area which dye and electronic adsorption ability is limited. The micron ball mainly constituted by nanowires is manufactured through experiments in this article,and it is doped into P25 paste in appropriate proportion. The new method that improving the efficiency of DSSC can be summarized by improving TiO2film microstructure through analysising and contrasting in experiments.

Investigation of tensile properties and dyeing behavior of various polypropylene/amine modifier blends

AbstractPolypropylene is utilized in manifold applications due to its unique properties. However, its use has been limited in the textile industry because conventional dyestuffs have no affinity for this polymer. Amine modifiers, generally improve the dye‐ability of polypropylene. Polyamide 6 (PA6) is a traditional amine modifier which improves the dyeing ability of polypropylene with disperse dyes. In this investigation, polyetheramine (PEA) is introduced as a novel amine modifier which improves the dye‐ability of polypropylene with disperse and acid dyestuffs. To this end, the dyeing behavior as well as possible impairments of tensile properties of PEA modified polypropylene were studied and compared to PA6 modified polypropylene. As with the PA6 containing blends, the tensile properties of the incompatible PP/PEA blends decreased due to weak interfacial adhesions between the components of the blends. However, the incorporation of a compatibilizer into such blends led to better dispersions of modifiers in the matrix as well as formation of amide or imide linkages which in turn reincreased the tensile properties almost to their initial values. Both PEA and PA6 modifiers improved the disperse dye uptake of the blends. However, Only Jeffamine ED‐2003 (i.e., PEA) was capable of enhance the acid dye uptake of modified polypropylene. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Preparation and Properties of Copolymer of Methacrylic Acid and Acrylamide onto Degraded Chitosan Initiated by HRP/H<sub>2</sub>O<sub>2</sub>/ACAC

The chitosan was degraded by hydrochloric acid and the effects of concentration of chitosan, amount of hydrochloric acid, reaction temperature and reaction time on the viscosity of chitosan were investigated. The results showed that the degraded chitosan with low viscosity could be prepared when chitosan (wt 6%) was dissolved in acetic acid solution and hydrochloric acid (wt 3%) at 90°C for 6 h to decrease the viscosity from 7.52 mPa·s to 2.48 mPa·s. Then, a graft copolymer was synthesized by copolymerization of degraded chitosan with methacrylic acid (MAA) and acrylamide (AAM) by using horseradish peroxidase (HRP)/H2O2/acetylacetone (ACAC) as initiator. The structures of original chitosan, degraded chitosan and the copolymer were characterized by FTIR. The copolymer was applied to the leather industry as an amphoteric retanning agent. The applied results showed that the retanned leather had the merits of good uniformity fullness softness, strong selecting filling properties, good dyeing ability and antimicrobial activity.

Effect of Electron Irradiation on Polypropylene Films

Effects of both electron beam irradiation on the properties of polypropylene (PP) films and the irradiation on the different layers of a multilayer PP film are studied. A Fourier transform infrared spectroscope was used to investigate the chemical structure of the films. The results showed that the chemical properties of the first layer were improved, that is, more functional groups responsible for dye ability and hydrophilicity of the film were produced on its surface, while noticeable improvement was not detected on the surface of other layers. This was also confirmed by testing the dye ability of the layers. However, the results obtained by atomic force microscopy showed that the electron irradiation caused some topographical changes, not only on the surface of the first layer but also on the others.

Dyeing Properties and Ultraviolet-cut Ability of Dyed Fabrics with Petasites japonicus Extract

Abstract It is well known that the Petasites japonicus has been used for a long time medicine for the treatment of allergic diseases such as lacquer poisoning. However, the exact components and dyeing properties of its effects is still not known. Therefore, the purpose of this study was to investigate the dyeing property and ultraviolet-cut ability of silk and nylon fabrics that was dyed variously with the Petasites japonicus. The Petasites japonicus extract was done by boiling with distilled water at 100℃ for 1 hour. As mordanting agent, we used Aluminum potassium sulfate (AlK(SO 4 ) 2 ․12H 2 O), Copper(II) sulfate pentahydrate (CuSO 5 ․5H 2 O), Iron(II)Chloride (FeCl 2 ․4H 2 O). The best K/S value of dyeing temperature and time, all the fabrics were 100℃, 90min. Silk fabric was dyed yellow(0.8Y 7.6/2.2) and nylon fabric was dyed reddish yellow(10.1 YR 7.4/3.0). Silk fabric and nylon fabric was changed greenish yellow on mordanting with CuSO 5 ․5H 2 O and FeCl 2 ․4H 2 O respectively. And the colorfastness of washing and dry-cleaning was improved by using mordanting agent(4～5 grade). Ultraviolet-cut ability(UV-B) was showed more 90% in dyed nylon fabrics.Key words: colorfastness dry-cleaning(드라이클리닝 견뢰도), dyeing property(염색성), mordanting agent(매염제), K/Svalue(표면염착량), Petasites japonicus(머위), Ultraviolet-cut ability(자외선 차단성).

Preparation and Properties of Graft Copolymer of Phenols and Starch with HRP Catalysis

A graft copolymer was synthesized by means of radical copolymerization of degraded starch, phloroglucinol(PG) and sulfanilic acid (SA) and the reaction was catalyzed by horseradishperoxidase (HRP)/H2O2. It was discussed that the effectsof monomer composition, the temperature and system pH on the graft copolymerization. The ideal copolymer was synthesized in the pH 7.0 at 30°C when the molar ratio of PG and SA was 5:6. The structure of the copolymer was characterized by Fourier Transform Infrared (FTIR) spectroscopy. Meanwhile, the graft copolymer has been used in tanning process. The retanned leather exhibits excellent increase ratio in leather thickness and good dyeing ability which indicate that the graft copolymer has retanning and assisting dyeing properties.

Investigation on dye ability and antibacterial activity of nanolayer platinum coated polyester fabric using DC magnetron sputtering

In this research work, one side of polyester fabrics was coated by platinum using DC magnetron sputtering. The dye ability of coated and uncoated samples to different natural and synthetic dyes was evaluated. The antibacterial counting test was used for determination of antibacterial efficiency of both treated and untreated samples. The results show that, the existence of platinum nanolayer on the surface of PET fabrics causes improve the dyeability of fabrics. The improvement for natural dyes is more significant than for synthetic dye. According to antibacterial activity tests, platinum itself has no antibacterial effect against Staphylococcus aureus. However, the natural dyed Pt-coated samples show moderate antibacterial effect.

Modification of Wool Fabric to Improve Its Dyeability

A study of pretreatment of wool fabric with chitosan and some natural constituents of lemongrass oil as citral and nerol has been carried out. The pretreatments effectively enhanced the dyeing properties of wool fabrics. Pretreatments with chitosan improve the dye ability, color fastness, whiteness, and the wet ability. Citral and nerol are used as properfumes fabric treatment and surfactant and cleaner to fabrics. These products are also resistant to laundering, and they are suitable for environmentally friendly treatments of wool fabric. Chemical and mechanical measurements of the treated samples compared with the untreated one are reported.