Effect of Conformation of Adsorbed Polymeric Dispersant on Dispersion Stability of Slurry

In this study, a novel reversible control method for particle dispersion/flocculation was developed. We found that the conformation of a polymer with solubility pressure dependencies on the side chain changed from random coil to fibril-like with ambient pressure. On the contrary, as we reported in our previous paper, the dispersion state of slurry changes with changes in the conformation of adsorbed polymers. Based on these results, we hypothesized that the dispersion state of the slurry can be reversibly controlled by ambient pressure. The sample used was aqueous slurry of alumina with a sodium salt of sulfonic acid copolymer with a relative molecular mass of 10000. The results showed that the dispersion state of slurry at atmospheric pressure was flocculated with a specific additive amount of polymer. On the contrary, after pressurization, the dispersion state was changed into a well dispersion state. Therefore, it was confirmed that the slurry was responsible for the pressure; thereby, a novel reversible control method for particle dispersion state was successfully developed.

show abstract

Dispersion Characteristics of AlN-Y₂O₃Powder Mixture by Various Dispersants in Non-aqueous Solvents

Kim¹,

Bang²,

Hwang³

et al. 2014

Journal of the Korean Ceramic Society

View full text Add to dashboard Cite

The dispersion characteristics of AlN-4.5 wt% Y 2 O 3 powder mixture by various dispersants were investigated in ethanol and methyethly-ketone (MEK) solvents. In general, the cationic polymer dispersants demonstrated superior dispersion of the powder as compared to the non-ionic ester-type dispersants or anionic phosphate-ester-based ones. The dispersion performance of the cationic polymer dispersants was sensitive to the type of solvent. An anhydric maleic-acid-based graft copolymer dispersant, AFB-1521, demonstrated a very good dispersion capability in ethanol but exhibited a much inferior dispersion in MEK. On the other hand, the dispersion of the powder mixture was very good with a phosphate-ester-based block polymer dispersant, BYK-111, in MEK solvent, while dispersionwas much degraded in ethanol.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Effect of Conformation of Adsorbed Polymeric Dispersant on Dispersion Stability of Slurry

Cited by 3 publications

References 12 publications

Relation between Dispersion Stability of Slurry and Adsorption Phenomenon of Polymeric Dispersant

Relation between Dispersion Stability of Slurry and Adsorption Phenomenon of Polymeric Dispersant

Reversible Control Method for Particle Dispersion and Flocculation Using a Polymer with Solubility Pressure Dependencies on the Side Chain

Dispersion Characteristics of AlN-Y₂O₃Powder Mixture by Various Dispersants in Non-aqueous Solvents

Contact Info

Product

Resources

About

Effect of Conformation of Adsorbed Polymeric Dispersant on Dispersion Stability of Slurry

Cited by 3 publications

References 12 publications

Relation between Dispersion Stability of Slurry and Adsorption Phenomenon of Polymeric Dispersant

Relation between Dispersion Stability of Slurry and Adsorption Phenomenon of Polymeric Dispersant

Reversible Control Method for Particle Dispersion and Flocculation Using a Polymer with Solubility Pressure Dependencies on the Side Chain

Dispersion Characteristics of AlN-Y2O3Powder Mixture by Various Dispersants in Non-aqueous Solvents

Contact Info

Product

Resources

About

Dispersion Characteristics of AlN-Y₂O₃Powder Mixture by Various Dispersants in Non-aqueous Solvents