Adsorption of polyacrylamide on zirconium dioxide | Zendy

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Adsorption of polyacrylamide on zirconium dioxide

Author(s) -

Chong Paul,

Curthoys Geoffrey

Publication year - 1979

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1979.070230525

Subject(s) - polyelectrolyte , polyacrylamide , adsorption , polymer , zirconium dioxide , aqueous solution , ionic bonding , chemical engineering , ionic strength , zirconium , polymer chemistry , dispersion (optics) , langmuir , molecule , inorganic chemistry , materials science , chemistry , organic chemistry , ion , physics , optics , engineering

The adsorption of an anionic‐type polyelectrolyte (polyacrylamide) onto zirconium dioxide from aqueous dispersion has been studied as a function of pH. Polymer adsorption takes place in the acid region, obeying a Langmuir‐type isotherm. Adsorption decreases with increasing pH. The zero‐point of charge (zpc) at the ZrO 2 –H 2 O interface and the nature of the ionic charge on the polymer molecules were investigated. The behavior of polymer attachment is discussed on the grounds of a nonionic bonding mechanism including H bonding and of electrostatic interaction. It has been found that the zpc of ZrO 2 is at pH ∼3.5 and that the ionic properties of the polymer molecules depend, to a noticeable extent, upon the pH of the medium.

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