Synthesis of acrylic copolymers consisting of multiple amine pendants for dispersing pigment

Chen, Yumin; Hsu, Ru-Siou; Lin, Hao-Yang; Chang, Shinn‐Jen; Chen, Shih-Chun; Lin, Jin‐Yuarn

doi:10.1016/j.jcis.2009.03.069

Cited by 22 publications

(19 citation statements)

References 19 publications

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“…The concept of dispersibility is defined as the ease with which particles are distributed into the liquid phase and when they no longer make permanent contact with the other particles present . The dispersants play the role in building voluminous shells and intensifying charges on the pigment surface that help resist flocculation and coagulation of pigments in media . Three types of dispersing agent were used to stabilise each pigment: nonionic dispersing agent, Egyptol BLM, anionic dispersing agent, SDS and cationic dispersing agent HTAB, to evaluate the most appropriate dispersant for each pigment.…”

Section: Resultsmentioning

confidence: 99%

Effect of process conditions on the properties of surface‐modified organic pigments encapsulated by UV‐curable resins

Hakeim

Arafa

Zahran

et al. 2017

Coloration Technology

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Aqueous dispersions of nanoscale organic pigments were successfully prepared via ball milling and ultrasonication. The dispersed organic pigments were encapsulated into UV-curable resins via a miniemulsion technique. Critical factors that affected the dispersion and encapsulation stability were investigated. The encapsulated organic pigments were characterised with transmission electron microscopy, thermogravimetric analyses, Fourier Transform-infrared spectra and zeta potential. The results clarified that the type of dispersing agent plays an important role in achieving maximal dispersion stability. Encapsulated organic pigments showed greater dispersion stability, and better wettability than the original pigments. Polyester tetra-acrylate oligomer can stabilise the mini-emulsion from diffusion degradation and inhibit phase separation with time. 1,6-Hexandiol dimethacrylate was the monomer of choice for ink-jet printing inks. Furthermore, it was found that monomer/oligomer and pigment/resin ratios were more influential and needed to be optimised. Thermal analysis, ultracentrifuge sedimentation and morphologies provided supporting evidence for the encapsulation of organic pigments into UV-curable resins.

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Section: Resultsmentioning

confidence: 99%

Effect of process conditions on the properties of surface‐modified organic pigments encapsulated by UV‐curable resins

Hakeim

Arafa

Zahran

et al. 2017

Coloration Technology

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“…The Hildebrand solubility parameter of the surfactant was calculated on the basis of data given in tables presented elsewhere [26]. The value of the hydrophilic-lyophilic balance (HLB) was calculated according to the formula reported in the literature [16][17][18]. The critical micelle concentration (CMC) was determined by an experimental method, on the basis of the dependence between the surface tension measured with a Du Nouy tensiometer and surfactant aqueous concentration [17,18].…”

Section: Methodsmentioning

confidence: 99%

“…This means that dispersion systems are basically unstable and the processes of aggregation of the dispersed phase particles occur sooner or later, followed by their sedimentation following the formation of sediment. One of the methods of experimental definition of the phenomena occurring in the dispersion system are observations and sedimentation tests [10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Research on the Influence of the Type of Surfactant and Concentrator in Aqueous Dispersion of Pigments

Makarewicz

Michalik

2013

J Surfact & Detergents

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This work reports tests performed to evaluate the stability of aqueous dispersions of inorganic oxide pigments with different specific surface areas, with the use of anionic and non-ionic surfactants and concentrators. Color mixtures of oxide compounds of blue, green, olive and brown with the unit cell spinel structure were used as pigments. The sodium salt of sulfosuccinic acid monoester, oxyethylenated nonylphenol and ethoxylated derivatives of lauryl alcohol, fatty alcohol and fatty amine were used as surfactants. The concentrators used were: poly(vinyl alcohol), the sodium salt of carboxymethyl cellulose as well as a water-based polyurethane oligomer. The highest dispersion efficiency was found for dispersed systems in which surfactant and concentrator were incorporated in the formula. The one containing the sodium salt of carboxymethyl cellulose or polyurethane oligomer with ethoxylated saturated fatty alcohol or fatty amine was found to be the most efficient. It was discovered that a higher dispersion efficiency corresponds to pigments with larger specific surface. The efficiency is also found to improve when the concentrator is an acrylic polymer or copolymer made up of two acrylic species. In this case, the concentrator interaction with the surfactant is more effective if the value of its boundary viscosity number is higher. This observation confirms the existence of interactions between macro-chains of the concentrator and surfactant molecules forming micelles with the pigment particles.

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“…Copolymer dispersants are suitable for stabilizing the UMP particles against flocculation during the grinding disruption and storage. The principle for achieving a fine dispersion is a thermodynamically driven interaction among dispersant molecules, UMP particles, and solvents in a collective manner of mutual non-covalent bonding such as electrostatic charge attraction, hydrogen bonding, p-p stacking, dipole-dipole interaction, and van der Waals forces [28].…”

Section: Copolymer Dispersantmentioning

confidence: 99%

“…The copolymers with specific functionalities can be prepared from the monomers with diversified functionalities such as C 1 -C 12 alkyl(meth)acrylate, amine-functionalized (meth)acrylate, and acid-functionalized (meth)acrylate. In addition, copolymer structures can be controlled for their molecular weight distribution and are tailored for specific UMP applications [28].…”

Section: Copolymer 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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Synthesis of acrylic copolymers consisting of multiple amine pendants for dispersing pigment

Cited by 22 publications

References 19 publications

Effect of process conditions on the properties of surface‐modified organic pigments encapsulated by UV‐curable resins

Effect of process conditions on the properties of surface‐modified organic pigments encapsulated by UV‐curable resins

Research on the Influence of the Type of Surfactant and Concentrator in Aqueous Dispersion of Pigments

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

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