Preparation and characterization of UV curable-encapsulated phthalocyanine blue pigment

Hakeim, O. A.; Diab, H.A.; Adams, Jörg

doi:10.1016/j.porgcoat.2015.02.007

Cited by 44 publications

(37 citation statements)

References 26 publications

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“…This increase in zeta potential values is attributed to the UV-curable resin that imparts charged functional groups (carboxyl and hydroxyl) to the surface of the pigment particle. This characteristic of polyester oligomer enabled it to stabilise the mini-emulsion against diffusion degradation, as well as preventing pigment particles from escaping to the aqueous phase [14,28]. In order to investigate the effect of oligomer type on encapsulation efficiency, three types of acrylate oligomers (AEDA, AEMA and PETA) were used.…”

Section: Effect Of Encapsulation On Dispersion Stabilitymentioning

confidence: 99%

“…Significant work has been performed with respect to preparation, stabilisation and characterisation of nanoscale pigment dispersions [11][12][13][14]. Recently, many approaches have been proposed for encapsulating organic pigments to create nanoscale organic pigments with completely new properties, such as emulsion or mini-emulsion polymerisation [2,21,22], phase separation [23,24], layer-by-layer assembly [3], sol-gel [25,26] and free radical precipitation polymerisation [27,28]. The build-up method includes the precipitation of organic pigment by pouring their sulphuric acid solutions into water [16].…”

Section: Introductionmentioning

confidence: 99%

“…There are two approaches to nano-downsizing of organic pigments: build-up and breakdown methods [15]. Investigations into the encapsulation of nanoscale organic pigments into a UV-curable system using the mini-emulsion technique have been reported by Hakeim et al [14,28,29]. However, the applicability of the build-up method is restricted due to the limited solubility of other conventional pigments and the involvement of superfluous production processes.…”

Section: Introductionmentioning

confidence: 99%

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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: Effect Of Encapsulation On Dispersion Stabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…1,2 However, a binder is required to fix pigment particles on the fiber surface to give colorfastness, because pigments are insoluble and they have no affinity for fibers. 1,2 However, a binder is required to fix pigment particles on the fiber surface to give colorfastness, because pigments are insoluble and they have no affinity for fibers.…”

Section: Introductionmentioning

confidence: 99%

“…Pigment dyeing for textiles has been paid much attention because of its advantages, such as a simple and short product process, little wastewater, and low production costs. 1,2 However, a binder is required to fix pigment particles on the fiber surface to give colorfastness, because pigments are insoluble and they have no affinity for fibers. And the performances of the binder greatly affect the color depth, K/S values, and rubbing fastness of the dyed fabrics.…”

Section: Introductionmentioning

confidence: 99%

Fixation of cationic P (st‐BA‐AA‐GMA) emulsion on pigment particles in dyeing of cotton fabrics

Fang

Song

Zhang

et al. 2017

J of Applied Polymer Sci

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Cationic copolymer emulsions of St, BA, AA, and GMA were successfully synthesized via semi-continuous emulsion polymerization. The properties of synthesized cationic emulsions were characterized by monomer conversion and solid content, differential scanning calorimeter, particle size and distribution, zeta potential, and centrifugal stability. The film performance of the cationic emulsions formed on cotton fiber surface was observed by scanning electricity microscopy. The influence of cationic emulsions on the color data, K/S values and rubbing fastness of dyed cotton fabrics was also investigated. The results show that P (St-BA-AA-GMA) emulsion had larger particle size and higher zeta potential than P (St-BA-AA) emulsion. When the films were formed at room temperature, P (St-BA-AA-GMA) emulsion film had better performance than P (St-BA-AA) emulsion film. The addition of GMA monomers improved the film performance. P (St-BA-AA-GMA) emulsion films formed at 120 8C after acetic acid solution treatment had the best water resistance. Dyed cotton fabrics pretreated with P (St-BA-AA-GMA) emulsion had better pigment dyeing performance than those pretreated with P (St-BA-AA) emulsion. It demonstrates that the addition of GMA monomers further improved the effect of pigment dyeing for cotton fabrics with cationic emulsions as binders. With the increase of P (St-BA-AA-GMA) concentration, the color performance of dye fabrics improved while the rubbing fastness decreased a little. But, the handle and fastness still meets the use standards for consumers.

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Hyperbranched polyester encapsulated phthalocyanine pigments for in situ printing of cellulosic fabrics

et al. 2018

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Encapsulation of phthalocyanine pigments onto hyperbranched polyesters (HBPs) is reported for in situ printing ellulosic fabrics. The encapsulation was developed through liquid‐phase separation method approached using various functional hydroxyl groups in HBPs; generation 2 (HBPs16) and generation 4 (HBPs64). The HBPs‐encapsulated pigment was characterized with thermal gravimetric analysis, environmental scanning/transmission electron microscope, Fourier transform infrared spectroscopy, dynamic light scattering, X‐ray diffraction pattern, and contact angle analysis. The characterization demonstrated the successful encapsulation of phthalocyanine pigments into HBPs. It was shown that the encapsulated pigments improved the pigment print fixation on cellulosic fabrics immediately in one step and decreased the requested amount of the binder and fixation temperature relative to the control sample. The color strength and light fastness were greatly influenced by the generations of hyperbranched polyesters.

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Preparation and characterization of UV curable-encapsulated phthalocyanine blue pigment

Cited by 44 publications

References 26 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

Fixation of cationic P (st‐BA‐AA‐GMA) emulsion on pigment particles in dyeing of cotton fabrics

Hyperbranched polyester encapsulated phthalocyanine pigments for in situ printing of cellulosic fabrics

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