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Colloidal Properties of Copolymer-Encapsulated and Surface-Modified Pigment Dispersion and ITS Application in Inkjet Printing Inks

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The copolymer-encapsulated pigment dispersion was prepared by phase separation technique with 2-[(2-Methoxy-4-nitrophenyl)azo]-N-(2-methoxyphenyl)-3-oxobutyramide (P.Y.74) and copolymer of styrene and maleic acid (PSMA). The surface-modified pigment dispersion was prepared by milling method with P.Y.74 and dispersant of PSMA, and further the two dispersions were applied to formulate into pigment ink, respectively. The colloidal properties of these two dispersions were compared, and the printing performance of prepared inks was also investigated. The results showed that the particles in PSMA-encapsulated pigment dispersion were smaller than that of surface-modified pigment dispersion. The stability to NaCl concentration, pH value and temperature of PSMA-encapsulated dispersion was superior to surface-modified pigment dispersion. The apparent viscosity of PSMA-encapsulated pigment dispersion changed small, while changed greatly in surface-modified pigment dispersion with increasing the shear rate. Printing performance indicated that the PSMA-encapsulated pigment dispersion was more suitable to preparation of inkjet printing inks than that of surface-modified pigment dispersion.
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Document Type: Research Article

Publication date: 2009-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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