Journal
DYES AND PIGMENTS
Volume 133, Issue -, Pages 467-478Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2016.06.033
Keywords
Pigment encapsulation; Inkjet printing; Miniemulsion polymerization; Copolymer; Colloidal stability
Funding
- German Academic Exchange Service [A/09/92408]
- Egyptian Ministry of Higher Education
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In our work, organic pigments were encapsulated with a polymer latex layer to reduce the tendency for pigment agglomeration and improve their stability in aqueous ink dispersions. Such polymer encapsulated pigments then were applied in inkjet printing without addition of separate binder additives, thereby reducing the risk of unfavorable interactions between the separate latex and pigment particles. We studied systematically the encapsulation of C.I. Pigment red 112 by miniemulsion polymerization of pigment/butyl acrylate-co-methyl methacrylate (BA-MMA) or styrene-co-butyl acrylate (St-BA) copolymers. The ratio of monomer to pigment was varied to find optimum conditions for the preparation of self-curable hybrid pigment inks for the textile inkjet printing application. Inkjet printing of cotton fabrics with different encapsulated and non-encapsulated pigment colors shows that the encapsulated pigment/polymer latex particles yield equally good values in terms of color strength, rubbing and washing fastness in comparison to non-encapsulated conventional inks, but avoiding problems of clogging and colloidal instability. (C) 2016 Elsevier Ltd. All rights reserved.
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