Comparison of the influence of a kind of electrolyte and its ionic strength on the adsorption and electrokinetic properties of the interface: Polyacrylic acid/MnO2/electrolyte solution

Chibowski, S.; Grządka, E.; Patkowski, J.

doi:10.1016/j.colsurfa.2008.05.038

Cited by 20 publications

(11 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reason for that may be found in the presence of the negatively charged groups (CMC, SDS or complexes: CMC/SDS, CMC/TX-100, SDS/TX-100) not linked with the surface but present in the compact part of the electric double layer (Chibowski et al 2009). The other reasons responsible for this decrease are the changes in the number and kind of surface groups of the adsorbent with the increase of pH (Chibowski et al 2008). Presented data also strongly prove that This allows to draw a conclusion that competitive adsorption must take place in all measured systems.…”

Section: Resultssupporting

confidence: 78%

Competitive adsorption in the system: carboxymethylcellulose/surfactant/electrolyte/Al2O3

Grządka

2011

Cellulose

Self Cite

View full text Add to dashboard Cite

The adsorption of carboxymethylcellulose (CMC) in the presence or absence of the surfactants: anionic SDS, nonionic Triton X-100 and their mixture SDS/TX-100 from the electrolyte solutions (NaCl, CaCl 2 ) on the alumina surface (Al 2 O 3 ) was studied. In each measured system the increase of CMC adsorption in the presence of surfactants was observed. This increase was the smallest in the presence of SDS, a bit larger in the presence of Triton X-100 and the largest when the mixture of SDS/Triton X-100 was used. These results are a consequence of formation of complexes between the CMC and the surfactant particles. Moreover, the dependence between the amount of surfactants' adsorption and the CMC initial concentration was measured. It comes out that the surfactants' adsorption amount is not dependent on the CMC initial concentration and moreover, it is unchanged in the whole measured concentration range. The influence of kind of electrolyte, its ionic strength as well as pH of a solution on the amount of the CMC adsorption at alumina surface was also measured. The amount of CMC adsorption is larger in the presence of NaCl than in the presence of CaCl 2 as the background electrolyte. It is a result of the complexation reaction between Ca 2? ions and the functional groups of CMC belonging to the same macromolecule. As far as the electrolyte ionic strength is concerned the increase of CMC adsorption amount accompanying the increase of electrolyte ionic strength is observed. The reason for that is the ability of electrolyte cations to screen every electrostatic repulsion in the adsorption system. Another observation is that the increase of pH caused the decrease of CMC adsorption. The explanation of this phenomenon is connected with the influence of pH on both dissociation degree of polyelectrolyte and kind and concentration of surface active groups of the adsorbent.

show abstract

Section: Resultssupporting

confidence: 78%

Competitive adsorption in the system: carboxymethylcellulose/surfactant/electrolyte/Al2O3

Grządka

2011

Cellulose

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently, Dinh Ba Le at 3M Company developed a lithium polyacrylate (Li-PAA) binder which is useful in electrodes incorporating alloy anode materials [26]. Similar to CMC, polyacrylic acid (PAA) and its derivatives are often used as dispersants, thickeners and flocculants depending on their molecular weight [27]. They have been typically studied as a component of solid polymer electrolytes for alkaline batteries including Zn/MnO 2 , Ni/MH, Ni/Cd, Ni/Zn and Zn/air batteries [28,29].…”

Section: Introductionmentioning

confidence: 99%

Lithium polyacrylate as a binder for tin–cobalt–carbon negative electrodes in lithium-ion batteries

Le²,

Ferguson

et al. 2010

Electrochimica Acta

180

121

View full text Add to dashboard Cite

“…Figures 9 and 10 present the influence of carboxymethylcellulose, surfactants (SDS, polyethylene glycol p-(1,1,3,3-tetramethylbutyl)-phenyl ether) and their mixtures (molar ratios: 1:1; 1:3; 3:1) on the zeta potential of manganese dioxide. The obtained results indicate that the presence of CMC and surfactants causes the decrease of the zeta potential as well as a shift of isoelectric point (pH iep ) from MnO 2 towards lower pH values (pH iep for MnO 2 % 4 (Chibowski et al 2008)). The last fact is the evidence that carboxymethylcellulose adsorption has a specific, nonelectrostatic character (Chibowski et al 2005).…”

Section: Resultsmentioning

confidence: 88%

“…It is known that the point of zero charge for manganese dioxide is around 4 (Chibowski et al 2008). It means that at pH \ 4 the solid surface is positively charged because of high concentration of MnOH 2 ?…”

Section: Resultsmentioning

confidence: 99%

Adsorption and elektrokinetic properties of the system: carboxymethylcellulose/manganese oxide/surfactant

Grządka

Chibowski

2011

Cellulose

Self Cite

View full text Add to dashboard Cite

The adsorption of carboxymethylcellulose (CMC) in the presence of the surfactants: anionic SDS, nonionic polyethylene glycol p-(1,1,3,3-tetramethylbutyl)-phenyl ether (Triton X-100) and their mixtures SDS/polyethylene glycol p-(1,1,3,3-tetramethylbutyl)-phenyl ether with different molar ratios (1:1; 1:3 and 3:1) from the electrolyte solutions (NaCl, CaCl 2 ) on the manganese dioxide surface (MnO 2 ) was studied. In every measured system the increase of CMC adsorption in the presence of surfactants was observed. This increase was the smallest in the presence of SDS, a bit larger in the presence of polyethylene glycol p-(1,1,3,3-tetramethylbutyl)-phenyl ether and the largest when the mixtures of SDS/polyethylene glycol p-(1,1,3,3-tetramethylbutyl)-phenyl ether were used. Among the measured mixtures, the mixture of SDS/polyethylene glycol p-(1,1,3,3-tetramethylbutyl)-phenyl ether with the molar ratio 1:3 caused the largest increase of CMC adsorption amount. These results are a consequence of formation of complexes between the carboxymethylcellulose macromolecules and the surfactant molecules. In order to determine the electrokinetic properties of the system the surface charge density of MnO 2 and the zeta potential measurements were conducted in the presence of the CMC macromolecules and the surfactants. The obtained data showed that the adsorption of CMC or CMC/surfactants complexes on the manganese dioxide surface strongly influences the structure of the electric double layer MnO 2 /electrolyte solution.

show abstract

Comparison of the influence of a kind of electrolyte and its ionic strength on the adsorption and electrokinetic properties of the interface: Polyacrylic acid/MnO2/electrolyte solution

Cited by 20 publications

References 31 publications

Competitive adsorption in the system: carboxymethylcellulose/surfactant/electrolyte/Al2O3

Competitive adsorption in the system: carboxymethylcellulose/surfactant/electrolyte/Al2O3

Lithium polyacrylate as a binder for tin–cobalt–carbon negative electrodes in lithium-ion batteries

Adsorption and elektrokinetic properties of the system: carboxymethylcellulose/manganese oxide/surfactant

Contact Info

Product

Resources

About