Dyeing behavior of polypropylene blend fiber. II. Ionic exchange mechanism of dyeing

Akrman, Jir̆í; Přikryl, Josef

doi:10.1002/(sici)1097-4628(19971017)66:3<543::aid-app15>3.0.co;2-w

Cited by 14 publications

(8 citation statements)

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“…For this purpose, basic nitrogen groups are suitable as cationic sites to interact with the anionic groups of acid dyes in an aqueous solution. Akrman et al 10 have proposed the ion exchange mechanism which is shown in Figure 13 to explain the interaction of an acid dye molecule with a polymeric dye site in an aqueous acetic acid solution.…”

Section: Dyeing Behaviormentioning

confidence: 99%

“…The more basic the nitrogen, the lesser would be the required amount of the amine modifier in the PP matrix. 9 Akrman et al [9][10][11][12] have synthesized two amine polymeric additives with molecular mass of 4500 and 4300 (g/mol) and basic nitrogen content of 3.7 and 4.9%, so that after blending with polypropylene improved dye-ability with acid dyes could be encountered. They have evaluated kinetic and thermodynamic parameters of the dyeing system, ionic exchange mechanism of dyeing and effect of drawing on dye-ability of the modified polypropylene fibers.…”

Section: Introductionmentioning

confidence: 99%

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

Asiaban

Moradian

2011

J of Applied Polymer Sci

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Polypropylene 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.

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Section: Dyeing Behaviormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Asiaban

Moradian

2011

J of Applied Polymer Sci

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“…It is recommended to adjust the pH of the dyebath with organic acid (i.e. acetic acid) for better adsorption onto the fiber [11]. The quantity of dye lost in the discharged effluent is estimated to be around 10% for disperse dyes [12].…”

Section: Introductionmentioning

confidence: 99%

Electrocoagulation of Disperse Dyebath Wastewater: Optimization of Process Variables and Sludge Production

Aygün

Nas

Sevimli

2021

J. Electrochem. Sci. Technol

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This study was conducted to investigate the effect of initial pH, current density, and electrolysis time on process performance in terms of decolorization and chemical oxygen demand (COD) removal from disperse dyebath wastewater (DDW) by mono-polar parallel laboratory scale electrocoagulation (EC) process. COD reduction of 51.3% and decolorization of 92.8% were obtained with operating cost of 0.19 €/m 3 treated wastewater for Al-Al electrode pair, while 90.5% of decolorization and 49.2% of COD reduction were obtained with operating cost of 0.20 €/m 3 treated wastewater for an Fe-Fe electrode pair. The amount of sludge production were highly related to type of the electrode materials. At the optimum conditions, the amount of sludge produced were 0.18 kg/m 3 and 0.28 kg/m 3 for Al-Al and Fe-Fe electrode pairs, respectively. High decolorization can be explained by the hydrophobic nature of the disperse dye, while limited COD removal was observed due to the high dissolved organic matter of the DDW based on auxiliary chemicals. Energy, electrode, and chemical consumptions and sludge handling were considered as major cost items to find a cost-effective and sustainable solution for EC. The contribution of each cost items on operating cost were determined as 10.0%, 51.1%, 30.5% and 8.4% for Al-Al, and they were also determined as 9.0%, 38.0%, 40.5% and 12.5% for Fe-Fe, respectively. COD reduction and decolorization were fitted to first-order kinetic rule.

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“…Different strategies which have been proposed for modifying PP fibres include: direct modification of the constitution of PP fibres through the formation of co-polymers in order to introduce polar groups directly into the polymer chain, which can then can serve as sorption sites for the dyestuff [1,2]; the incorporation of other polymers (e.g. polyester and polymeric additives) leading to the formation of a bicomponent fibre with an increased capacity for dyestuff sorption [3][4][5][6][7][8][9][10]; the incorporation of colourless additives as dye-binding sorbents [e.g. minerals, polyhedral oligomeric silsesquioxanes (POSS) nanoparticles and clay], which also improve the dye-binding capacity [11][12][13][14]; surface modification by plasma activation or the grafting of different compounds (e.g.…”

Section: Introductionmentioning

confidence: 99%

Modification of polypropylene fibres with cationic polypropylene dispersion for improved dyeability

Mahmud‐Ali

Wright

Pham

et al. 2018

Coloration Technology

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Polypropylene (PP) fibres are important hydrophobic fibres which are used in the production of functional textiles such as sports textiles. The absence of functional groups and low polarity make PP fibres difficult to dye, thus mass coloration during fibre extrusion is the major technique applied today. However, the disadvantage of mass coloration is the low flexibility and the demand to produce high volumes. A new method to modify the surface of PP fibres utilises the deposition and thermal fixation of cationic PP dispersion. Through padding and thermal fixation of a cationic PP dispersion, dyeable 100% PP fibres can be obtained. The effects of fixation temperature, and of the amount of dispersion used on the modified fibres were studied using Fourier Transform-infrared spectroscopy, laser scanning microscopy, dyeing experiments with CI Acid Red 151, and by determining selected fastness properties. The results indicate the potential of this new method to produce surface-modified 100% PP fibres, which can be dyed in conventional acid-dyeing processes and therefore used in fibre blends, for example in combination with wool.

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Dyeing behavior of polypropylene blend fiber. II. Ionic exchange mechanism of dyeing

Cited by 14 publications

References 0 publications

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

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

Electrocoagulation of Disperse Dyebath Wastewater: Optimization of Process Variables and Sludge Production

Modification of polypropylene fibres with cationic polypropylene dispersion for improved dyeability

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