Effect of Triton X-100 on the stability of aqueous dispersions of copper phthalocyanine pigment nanoparticles

Dong, Jie; Chen, Shuang; Corti, David S.; Franses, Elias I.; Zhao, Yan; Ng, Hou T.; Hanson, Eric G.

doi:10.1016/j.jcis.2011.04.050

Cited by 43 publications

(39 citation statements)

References 28 publications

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“…Dispersion stability is an important problem for many applications of colloidal and nanoparticle systems including drug delivery [1], inkjet printing [2][3][4], and flow assurance [5]. Colloidal particles with sizes smaller than about 5 lm are subjected to significant Brownian motion in a liquid dispersion medium.…”

Section: Introductionmentioning

confidence: 99%

New models and predictions for Brownian coagulation of non-interacting spheres

Kelkar

Dong

Franses

et al. 2013

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

New models and predictions for Brownian coagulation of non-interacting spheres

Kelkar

Dong

Franses

et al. 2013

Journal of Colloid and Interface Science

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“…The results are given in Figure 1, which shows the affinity of the surfactant on the powder surface as it decreases the absolute magnitude of the zeta potential up to 20 mV. Recently, the dispersion and stabilising effects of block copolymer type surfactants on hydrophobic pigments have been studied by several authors [2,11,12,25,26]. Nonionic surfactants have two key parts in their structure; the nonylphenol group is the hydrophobic anchoring part (fixed for the nonylphenol ethoxylate surfactants utilised in this research) and the polyethylene oxide group is the hydrophilic part that provides steric stabilisation by extending into the aqueous media.…”

Section: Resultsmentioning

confidence: 99%

Adsorption characteristics of ionic and nonionic surfactants on hydrophobic pigment in aqueous medium

Sis

Birinci

2012

Coloration Technology

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The current study is based on the investigation of the adsorption properties of ionic and nonionic surfactants on an organic hydrophobic pigment powder, namely, b-copper phthalocyanine, in aqueous medium. The nonionic surfactants, selected systematically to represent varying degrees of ethoxylation, are nonylphenol ethoxylates, whereas the ionic surfactant is sodium oleate, a carboxylate-type anionic reagent. The adsorption of surfactants was assessed qualitatively by surface analysis of powders, before and after the adsorption of the surfactants. The experimental results were explained by the structural and other properties of the surfactants and the surface properties of the pigment. The specific adsorption of surfactants on pigments was verified by zeta potential measurements, as they altered the zeta potential values to a great extent. Nonionic surfactants decreased the absolute value of the zeta potential of the powder; whereas anionic surfactant sodium oleate shifted the zeta potential to more negative values. On the one hand, Fourier Transform-infrared and X-ray diffraction examinations of the pigments did not show any noticeable evidence for surfactant untreated or treated copper phthalocyanine. On the other hand, thermal analysis (both thermogravimetric and differential thermal analysis) showed clear evidence of the surfactants on both pigments, as substantial changes in thermogravimetric curves were assessed.

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“…Different from dyes, UMPs are totally insoluble in organic mediums due to its strong intermolecular aggregation, and they are required to be finely ground and dispersed in an Eco-Friendly Textile Dyeing and Finishing organic medium to warrant their gloss appearance, lighting efficiency and maximizing material utilization. In order to prepare stable UMP, the particle size of UMP needs diminishing sharply to smaller than 1 μm and the process can be achieved via dispersant, microencapsulation, grinding, ultrasonic wave, microfluidizer processes and their combined process [17][18][19].…”

Section: Preparation Of Umpmentioning

confidence: 99%

“…Low molecular weight dispersants are commonly used for wetting and dispersing the UMP particles. The effect of Triton X-100 on the colloidal dispersion stability of CuPc pigment nanoparticles was investigated by Dong et al [18]. The influence of the hydrophobic chain of quaternary dispersers on the properties of pigment dispersion was discussed by Fang et al and good dispersion effects were obtained when the hydrophobic chain were 14 or 16 [21].…”

Section: Low Molecular Weight Dispersantmentioning

confidence: 99%

Preparation, Characterization and Application of Ultra-Fine Modified Pigment in Textile Dyeing

Wang¹,

Yin²

2013

Eco-Friendly Textile Dyeing and Finishing

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Water-based pigment systems are environment-friendly pathways. Pigments are dispersed into water with the aid of auxiliaries, such as dispersants, emulsifiers, anti-setting agents, etc. Water-based pigment has been widely applied in coloration for textiles, paints, architecture, wood and so on [ , ]. "ut the unmodified pigment dispersion that contains pigments with large particle size is unstable and also suffers from the problems as precipitation and floating color. "nd then the color, fastness, handle and uniformity of the fabrics dyed with the unmodified pigment dispersion are influenced.Ultra-fine modified pigment UMP is referred to nanometer or micrometer pigment particle by physical and/or chemical modifications in a composite disperse system with attaching functional groups for pigment dispersion. These functional groups often have contribution to appear the vivid color for the chromophoric groups in the pigment particle by selectively reflecting and absorbing certain wavelengths of visible light [ ]. The UMP dispersion usually shows relative stability and higher color strength K/S value which closely approaches to that of dyes [ ]. When UMP is used to color, the finely divided, insoluble particle remains throughout the coloration process [ ]. Without the binder or less the amount of binder added in printing paste, the good handle will be achieved. "nd the better fastness is attained with the stronger attraction between the UMP and the fiber [ , ]. The UMP systems are divided into nonionic pigment dispersion, anionic pigment dispersion and cationic pigment dispersion according to the charged particles. Compared to the nonionic pigment dispersion, the pigment dispersion with ionic dispersant may produce the stronger combining power to the fabric [ , ].The cationic disperser has been widely used in many fields. It had been reported in Japanese patents that cationic disperser was applied in electrodeposits coat. "eing prepared with cationic disperser, the cationic pigment dispersion is able to decrease the migration of the pigment, and favorable dyeing deepness and color fastness are also obtained when such pigment is applied to pretreated cotton fabric and terylene-cotton fabric in pad dyeing [ ]. The cationic surfactant is grafted onto the acrylic acid copolymer to attain disperser which is then applied to the anthraquinone pigment to prepare ink for ink-jet printing on paper [ ]. In addition, there are many applications of cationic disperser in other fields, such as papermaking, image thermomigration, ink-jet printing paper, inorganic nano-scale powder and preparing hydrophilic ethylene copolymer dispersion. Moreover, pigment dyeing by exhaust process is possible by imparting substantivity with cationic reagents to induce the necessary affinity between pigments and fibers. The chemical modification of fiber with cationic reagents has been carried out to improve the dyeing properties [ , ].In this chapter, the preparation of UMP, such as dispersing process, grinding process, ultrasonic wave process, microe...

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Effect of Triton X-100 on the stability of aqueous dispersions of copper phthalocyanine pigment nanoparticles

Cited by 43 publications

References 28 publications

New models and predictions for Brownian coagulation of non-interacting spheres

New models and predictions for Brownian coagulation of non-interacting spheres

Adsorption characteristics of ionic and nonionic surfactants on hydrophobic pigment in aqueous medium

Preparation, Characterization and Application of Ultra-Fine Modified Pigment in Textile Dyeing

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