A Review on the Mechanism of Pigment Dispersion

Agbo, Christiana; Wizi, Jakpa; Sarkodie, Bismark; Boakye, Andrews; Fu, Shaohai

doi:10.1080/01932691.2017.1406367

Cited by 43 publications

(33 citation statements)

References 124 publications

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“…Too much dispersant is no longer adsorbed on the surface of dye particles, but enters the aqueous solution. This leads to the generation of a "bridge" effect between the dye particles, causing the larger nanoparticle size again [25,26]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Aqueous Nanodispersions of Disperse Dye by High‐Gravity Technology and Spray Drying

Yin

Xu²,

et al. 2020

Chem Eng & Technol

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Disperse dyes are poorly water‐soluble and difficult to stably disperse in an aqueous medium, which greatly limits their application in dyeing synthetic fibers. Micronization can solve this problem. Herein, a facile way to prepare stable aqueous nanodispersions of disperse dye (C.I. disperse yellow 54) is presented by combining high‐gravity antisolvent precipitation in a rotating packed bed (RPB) with spray drying. The as‐prepared product had an average particle size of 120 nm, which could be readily redispersed in water. Compared with raw dye, the wettability and dispersibility of disperse dye nanoparticles were remarkably improved. Furthermore, the dyeing properties of the nanodispersions were obviously better than those of the commercial dye, which was micronized by ball milling.

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Section: Resultsmentioning

confidence: 99%

Preparation of Aqueous Nanodispersions of Disperse Dye by High‐Gravity Technology and Spray Drying

Yin

Xu²,

et al. 2020

Chem Eng & Technol

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“…To ensure that pigment particles are below the size required by the desired type of finish, they are milled to attain the required size. There are various properties that depend on particle size. Such include hue/tint strength, hiding/transparency, gloss/flatting and film appearance, flocculation, viscosity, stability or weather resistance.…”

Section: Pigment Attributes That Affect Performancementioning

confidence: 99%

“…To ensure that pigment particles are below the size required by the desired type of finish, they are milled to attain the required size. [95][96][97]…”

Section: Particle Sizementioning

confidence: 99%

Characteristics of pigments, modification, and their functionalities

Sarkodie

Acheampong

Asinyo

et al. 2019

Color Research & Application

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Novel treatments of pigments with inorganic materials have tremendous industrial and commercial prospects. Specific treatment of pigment has a marked effect on its behavior during application. The treatment allows a broad modification of the surface characteristics of pigment particles which leads to improved functionalities. Surface modification of pigments is achieved via coating, polymerization with modifying reagent, treatment with derivatives or polymers, which alter either the optical, conductivity or dispersibility during processing and application. These and many other distinguishing factors that affect the characteristics of pigments such as the class, crystal structure, particle morphology, particle size, hiding power, pigment volume concentration, surface character, and surface treatment have been reviewed. Various organic pigments such as those from fungus and bacteria, and the various families of pigment types such as metallic pigment, light interference, and diffractive pigments which presents decorative quality such as leafing, nonleafing, pearlscent, and Fabry‐Perot effects on substrates have also been reviewed in addition to those from inorganic sources with emphasis on the structure and physiochemical modifications using metal and nonmetal Ions.

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“…Aggregation may have serious adverse effects in different applications because the degree of separation of pigment particles can decrease colour yield. The theory of pigment dispersion is the mechanism of breaking up agglomerates into primary particles and the stability of these newly formed particles 3 . The specific process of dispersion of the pigment in the resin can be divided into three steps as follows.…”

Section: Introductionmentioning

confidence: 99%

Understanding dispersion of copper phthalocyanine alpha blue pigment in polyethylene masterbatch with the use of wax

Yücetürk

Seydibeyoğlu

2020

Coloration Technology

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Coloured plastics and polymers are widely used in packaging and consumer goods. Despite their critical roles, there is limited literature on detailed analysis of effective pigment dispersion in polymer matrices for masterbatch applications. In this study, detailed research was conducted on pigment dispersion using different wax materials and their performances in polyethylene masterbatches were compared. During the study, it was first found that the presence of salt crystals plays a critical role in dispersion in one of the tested pigments. Using a laser particle size device, it was shown that homogeneous particle size distribution is another critical parameter for proper pigment distribution. Although filter testing is a common method in industrial applications, there is very limited information in the academic literature. The filter test method was used to examine the effects of different polyethylene waxes on pigment dispersion. The best filter pressure values were obtained in masterbatches made with micronised wax. It was also observed that the improved dispersion increased the mechanical properties of the masterbatch. The masterbatch colours were measured with a sphere spectrophotometer and it was observed that uniform pigment distribution increased the colour strengths. Similar results were also seen in polyethylene films produced by the blown film process.

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A Review on the Mechanism of Pigment Dispersion

Cited by 43 publications

References 124 publications

Preparation of Aqueous Nanodispersions of Disperse Dye by High‐Gravity Technology and Spray Drying

Preparation of Aqueous Nanodispersions of Disperse Dye by High‐Gravity Technology and Spray Drying

Characteristics of pigments, modification, and their functionalities

Understanding dispersion of copper phthalocyanine alpha blue pigment in polyethylene masterbatch with the use of wax

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