Film-Formation and Binder-Free Pigment Printing of Fluorosilicone-Modified Polyacrylate/Pigment Hybrid Latex: Effect of Cross-Linking Degree

Abstract

Binder-free pigment dyeing/printing of textiles is a type of environmentally friendly and clean production technology that utilizes polymer/pigment hybrid latex. Although it has widespread use, the manner in which the nature of the hybrid latex influences the film formation and how systems can be designed to improve softness and air-permeability is still unclear. In this study, we synthesized a series of fluorosilicone-modified polyacrylate/pigment hybrid latexes to explore how cross-linking degree affects film-formation behavior and binder-free pigment printing performance on fabric, where the cross-linking structure is controlled by a silane coupling agent. Our results show that the cross-linking degree of the fluorosilicone-modified polyacrylate chain plays a vital role in chain diffusion, latex particle packing, and deformation. Further, it controls "skin" formation during the process of hybrid latex drying. The dried hybrid films not only have homogeneity and good barrier performance but also exhibit a soft state (low T g , − 28.3 °C) owing to the silicone chain segment and bound water with a plasticizing effect. Interestingly, our results show that the cross-linking degree of hybrid latex particles changes as a function of the morphology of the printed polyester (PET) fiber. Further, as a result of the improvement of the softness and airpermeability of the binder-free printed PET fabric, the surface of single yarns is uniformly wrapped by hybrid films with a high crosslinking degree. These insights allow for effective development of textile pigment printing technology controlled by the film-formation behavior of hybrid latex.

The Effect of Macromonomer Surfactant Microstructure on Aqueous Polymer Dispersion and Derived Polymer Film Properties

“…A similar observation was previously described in the literature for core–shell particles with different T g values in the core and shell using (meth)­acrylic acid as a comonomer and was ascribed to the soft BA/MMA core flowing out of the hard MMA shell . Something similar could also have happened in our case and if these large particles contain water or air; this inclusion can result in hazy or opaque films, , which is also observed for films from s L l , s M l , and h A l . To improve the appearance of the hazy films ( i.e., s L l , s M l , and h A l ), the films were annealed at 60 °C (prep D) and even 100 °C for 5 days.…”

“…The presence of smaller particles is desirable to improve the film formation by increasing the capillary forces needed for coalescence. 86 , 87 These large particles surrounded by smaller ones are also observed using AFM ( Figure 9 c,d) and in AFM and SEM for some of the other coatings ( s L l , s M s , and h A l ); all these coatings contain a high T g macromonomer (see SI for AFM images of the other films). When considering the SEM image in more detail, we observe that these large particles seem to be hollow (see some broken particles in the SEM image in Figure 9 b).…”

“…Zooming in at other areas (Figure b), we also see large particles but now surrounded by many small particles (∼120 nm); this is also observed in the DLS data measured directly after polymerization (see SI), implying that the large particles were formed during polymerization. The presence of smaller particles is desirable to improve the film formation by increasing the capillary forces needed for coalescence. , These large particles surrounded by smaller ones are also observed using AFM (Figure c,d) and in AFM and SEM for some of the other coatings ( s L l , s M s , and h A l ); all these coatings contain a high T g macromonomer (see SI for AFM images of the other films). When considering the SEM image in more detail, we observe that these large particles seem to be hollow (see some broken particles in the SEM image in Figure b).…”

Features of printing textile materials with pigments and the use of water dispersions of synthetic copolymers

“…Частично замененная гуаровая камедь является подходящим вариантом благодаря цвету и физическим свойствам. В работе [4] рассмотрена пигментная печать без связующего вещества. В этом исследовании синтезировали серию гибридных латексов полиакрилата и пигмента, модифицированных фторсиликоном.…”

Organofluorosilicon Modified Polyacrylate with the Unidirectional Migration Promotion of Disperse Dyes toward Polyester Fabric for Wash-Free Digital Inkjet Dyeing

“…Lu et al synthesized fluorosilica-modified polyacrylate/pigment mixed emulsions and found that the cross-linking degree of polyacrylate chains considerably influenced film formation and printing performance. The resulting films had uniformity and enhanced barrier properties and enabled improved textile pigment printing with controlled latex film-forming behavior . To enhance the printing performance of coatings, Wang et al proposed a method for preparing a hybrid pigment emulsion containing organosilicon via the copolymerization of organosilicon and acrylic monomer in a one-step miniemulsion.…”