Divinyl‐terminated polysiloxane as an effective polyacrylates modifier for pigment printing: A study with different molecular weights and quantities

Abstract

Polyacrylates binder is used as an environmental approach for pigment printing. However, the poor water resistance and abrasive resistance of it makes this technique limited. In this study, divinyl‐terminated polysiloxane (Divi‐PDMS) had been used to modify polyacrylates by miniemulsion polymerization. The conversion and coagulation of miniemulsion polymerization were evaluated by gravimetry method, the colloid properties of prepared latexes were obtained and the structures were confirmed by Fourier transformed infrared spectroscopy and NMR. Surface properties of latex films were investigated in terms of dynamic water contact angle, water absorption, and mechanical tensile properties. The results show that the polymerization has good stability, and the product has good phase separation of polysiloxane, which results in increased hydrophobicity and toughness of the film. The film with low‐molecular weight and 8% dosage of Divi‐PDMS has better hydrophobicity and toughness. The product is applied to pigment printing with better wet rubbing fastness and soft handle compared with the unmodified binder. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47961.

Sustainable washing‐free printing of disperse dyes on polyester fabrics enabled by crosslinked fluorosilicone modified polyacrylate binders

“…After the incorporation of ViFS, both of the two copolymers ViFSPA0 and ViFSPA2 had only one T g , suggesting the absence of homopolymer of ViFS. Furthermore, the T g s of the two copolymers were slightly lower than that of PA (−9.1°C), which implied that ViFS segments in the chains increased the flexibility of binder 49 …”

“…The ViFSPA binders were prepared via mini‐emulsion polymerization according to our previous reports 38,49 . The synthesis route of ViFSPA was shown in Scheme 2.…”

“…This phenomenon was ascribed to the migration of silicon‐containing segments to the film‐air interfaces. The consequent low concentration of silicon at the film‐PET interfaces generated a high affinity of binder film for the diffusion of disperse dye molecules 45‐49 . An effective way to solve this problem is the usage of crosslinkable binders that can significantly restrain the migration of polymer chains 50‐54 …”

The morphology of poly(terminal vinyl dimethicone-co-methyl methacrylate-co-n-butyl acrylate)/pigment composite film and its application in pigment printing of polyester fabric

“…Meanwhile, with increasing content of ViPDMS, more polysiloxane segment would migrate onto fabric surface, resulting in lower friction coefficient. 40,41 As a result, the rubbing fastness was also enhanced. When ViPDMS content increased from 0 to 30 wt%, the rubbing fastness of printed fabric raised at least two levels.…”

One‐step mini‐emulsion copolymerisation of waterborne polysiloxane‐modified polyacrylate/pigment hybrid latex and its application in textile pigment printing

“…Also, silicone components are introduced into hybrid copolymer materials due to very specific properties of polysiloxane, such as the extremely low T g (−123℃), low surface tension and surface energy, and high thermal resistance. [22][23][24] However, it is also noteworthy that the main problem in the incorporation of silicone into an organic polymer system is the low compatibility with organic polymers. 25 For example, Chen et al 26,27 found that fabrics printed with vinyl polydimethyl siloxane (ViPDMS)-modified PAcr/pigment composite particles possessed lower K/S in a comparted PAcr/pigment system, resulting from the phase separation between PDMS and PAcr.…”