Effect of TRITON™ X‐based dispersants bearing a carboxylic terminal group on rheological properties of BAM/ethyl cellulose/terpineol paste

Abstract

In this study, we attempted to use TRI-TON TM X (or octyl phenol ethoxylate (OPE) of different oxyethylene units (i.e., n ¼ 2, 5, and 10))-based dispersants containing a carboxylic group in the oxyethylene chain end for the formulation of BAM phosphor paste. Thus, a threecomponent system employing OPE-COOH as a dispersant, terpineol as a solvent, and ethyl cellulose as a binder was compounded with BAM particles, and the rheological properties of the paste were investigated in detail. Among three acidic TRITON X-based compounds we tested (i.e., [OPE2-COOH], [OPE5-COOH], and [OPE10-COOH]), OPE10-COOH containing the highest number of oxyethylene units in the backbone was found to be the dispersant showing the lowest viscosity of BAM paste under identical conditions.

Plasma display material prepared from a new blue phosphor dispersion

“…The synthesis and characterization of Triton X derivatives containing specially added acidic or basic moieties were reported earlier by our group 11. We also demonstrated that a Triton X based compound with a terminal carboxylic acid (OPE–COOH) could be a better dispersant than others that have ester, phosphoric acid, or amino‐functional groups 12. The added carboxylic terminal group provides a strong interaction with the surface of a commonly used blue phosphor when dispersed in terpineol as a solvent.…”

“…The isoelectric point of BAM phosphor is 10.27 12. In the course of the acidic titration, the ζ potential value of BAM phosphor increases (at pH = 2, the ζ potential is 162 mV).…”

“…The added carboxylic terminal group provides a strong interaction with the surface of a commonly used blue phosphor when dispersed in terpineol as a solvent. In addition, increasing the oxyethylene chain length was found to further decrease the flocculation of phosphor particles 12…”

The influence of dispersants that contain polyethylene oxide groups on the electrical resistivity of silver paste

“…For example, poly‐(oxyethylene) isooctylphenyl ether (X‐100) dispersant usually is used to disperse inorganic powders, e.g., nano lead zirconate titanate (PZT) powder, barium titanate nano powder (BaTiO 3 ), yttrium oxide/zirconium oxide (Y 2 O 3 /ZrO 2 ) powders, slurries, multiwall carbon nanotubes (MWCNTs), single‐walled carbon nanotubes (SWNTs), and nanocrystal indium tin oxide (ITO) particles . Other dispersants, such as tert‐ octylphenoxypoly(ethoxyethanol) (X‐114), also are used to disperse ZrO 2 particles, yttria‐stabilized zirconia (TZ‐3Y) powders, and phosphor . X‐100 also is used in the field of biotechnology, such as its use in the separation of protein from cell membranes and extracting DNA .…”

Effect of acrylic copolymer dispersants bearing epoxy groups on rheological and dielectric properties of carbon black‐filled epoxy system

“…In our group, various types of sophisticated dispersants (e.g., Triton derivatives) are often employed as a viscosity modifying agent. 9,10 Synthesized acrylic dispersants with well-defined compositions have captivated both academic and industrial polymer engineers. Recent works have been done to improve the modification of classical syntheses toward more precisely controlled acrylic backbones, which are required in the design of advanced dispersants.…”