Preparation of core–shell latex for the pigmented ink of textile inkjet printing

Abstract

A core-shell latex comprising poly(butyl acrylate) as core and poly(styrene-methyl methacrylate) as shell was synthesized by emulsion polymerization using allyloxy nonylphenoxy propanol polyoxyethylene ether ammonium sulfonate (ANPS) as emulsifier. Transmission electron microscope, differential scanning calorimeter, and thermogravimetric analyses suggested the prepared latex had a core-shell structure. The particle size of the core-shell latex was about 102.8 nm with a molar ratio of butylacrylate, methyl methacrylate, and styrene at 6 : 2 : 2, a mass ratio of ANPS and monomers, ammonium persulfate and monomers at 15% and 1.0%, respectively. The core-shell latex showed high centrifugal stability and excellent freeze-thaw stability. The clogging nozzle rate of the pigmented ink containing 20 wt % core-shell latex was small, whereas the printed fabrics with this pigmented ink exhibited high rub and washing fastness.

Ink-Jet Printing of Colored Latex Inks with a “Soft” Core–“Hard” Shell Structure

“…6,7 More severely, it can even lead to a blockage of the printer nozzle. 8,9 However, the high-T g 's of the CLPs will cause a stiff hand feel and a small elongation at break after the film formation of particles, which can have unfavorable influences on the hand feel and color fastness of printed fabrics. 10 Therefore, it is particularly important to maintain the soft feel of ink-jet printed fabrics while improving the ejection performance of CLP.…”

“…For ink-jet printing of textiles, the lower glass-transition temperature ( T g ) of CLPs can result in remarkable viscoelasticity of the particles, which can cause the particles’ deformation in the ink droplets to absorb part of the driving energy under the ejection transient. The deformed CLPs have negative effects on the ink-jet velocity, droplet breaking length, and formation process of inks. , More severely, it can even lead to a blockage of the printer nozzle. , However, the high- T g ’s of the CLPs will cause a stiff hand feel and a small elongation at break after the film formation of particles, which can have unfavorable influences on the hand feel and color fastness of printed fabrics . Therefore, it is particularly important to maintain the soft feel of ink-jet printed fabrics while improving the ejection performance of CLP.…”

Encapsulated Dye/Polymer Nanoparticles Prepared via Miniemulsion Polymerization for Inkjet Printing

“…18−23 The droplet nucleation mechanism in miniemulsion polymerization promotes the even dispersion of nanoparticles 24,25 and eliminates the effects of compound structures on the encapsulated nanoparticles. 20,26,27 Thus, miniemulsion polymerization has been applied in various areas, including textile pigments, 11,28 binders, 29,30 molecular imprinting, 31,32 and encapsulation. 33,34 Some studies have investigated the encapsulation of pigments via miniemulsion polymerization; however, to the best of our knowledge, studies on the encapsulation of dyes have not been conducted yet.…”

“…Miniemulsion polymerization is a versatile technique used for synthesizing a broad range of polymers and structured materials in confined geometries. Compared with the traditional emulsion polymerization technique, miniemulsion polymerization has the advantages of convenience, environmental friendliness, controllable particle size, and high stability. − The droplet nucleation mechanism in miniemulsion polymerization promotes the even dispersion of nanoparticles , and eliminates the effects of compound structures on the encapsulated nanoparticles. ,, Thus, miniemulsion polymerization has been applied in various areas, including textile pigments, , binders, , molecular imprinting, , and encapsulation. , Some studies have investigated the encapsulation of pigments via miniemulsion polymerization; however, to the best of our knowledge, studies on the encapsulation of dyes have not been conducted yet.…”

Aqueous poly(vinyl acetate)-based core/shell emulsion: synthesis, morphology, properties and application

“…7 The investigations on CS latex featuring well-dened morphology have largely become an increasingly important interdisciplinary research eld, not only because of the tremendous demand of modern material science, but also of their scientic importance in the areas of colloid and interface. [8][9][10][11] Since the rst CS emulsion product was marketed as K-120 by Rohm & Haas in 1957, CS emulsion has been continuously developed and widely used in a variety of everyday products, such as advanced materials, [12][13][14][15] architectural coatings and adhesives, [16][17][18][19] drug carrier, 20,21 electronic industry [22][23][24] and membrane separation. 25 It gradually becomes the leading edge of emulsion polymerisation from both industrial and academic perspectives.…”