Year-end Sale % OFF 
Abstract
In this paper the adsorption of acrylic acid, glutaric acid and polyacrylic acids (PAAs) (molecular weight (MW) 2000, 5000 and 90 000) on the mercury surface by phase selective a.c. voltammetry at a potential of - 0.6 V vs. Ag/AgCl reference electrode was investigated. The adsorption of these compounds was determined in the pH range 2–8, which is important, because by changing the pH values the degree of neutralization of PAAs changes and influences adsorption. The adsorption of PAAs is pronounced at low pH values (pH 2.0), while at higher pH values (pH 7) they are not adsorbed at all, regardless of the degree of polymerization. No effect of ionic strength (0.01 M and 0.55 M NaCl) was detected for adsorption of PAA (MW 2000 at pH 1.8 and MW 5000 in the pH range 2–8) under the experimental conditions. The study of adsorption of acrylic acid and glutaric acid as possible monomers of PAAs at the mercury electrode has shown that even at low pH glutaric acid is poorly adsorbed, while acrylic acid is adsorbed more strongly than predicted from its hydrophobic properties defined through the octanol/water distribution coefficient.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
