Adsorption of cellulose derivatives on inorganic oxides

Hoogendam, C.W.; Derks, I.; Keizer, A. de; Stuart, Martien A. Cohen; Bijsterbosch, B.H.

doi:10.1016/s0927-7757(98)00575-5

Cited by 22 publications

(17 citation statements)

References 23 publications

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“…As the density of segments is lower the repulsion between charged segments, which is a motive for desorption, is also lower for CMC adsorbed on TiO 2 . In addition, desorption is hampered (both on the hematite and titania surface) because of both the stiffness of the backbone of the polymer and the strong adsorption to the surface, as we argued in previous papers (10,26).…”

mentioning

confidence: 81%

Effective Viscosity of Polymer Solutions: Relation to the Determination of the Depletion Thickness and Thickness of the Adsorbed Layer of Cellulose Derivatives

Hoogendam

Peters

Tuinier

et al. 1998

Journal of Colloid and Interface Science

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confidence: 81%

Effective Viscosity of Polymer Solutions: Relation to the Determination of the Depletion Thickness and Thickness of the Adsorbed Layer of Cellulose Derivatives

Hoogendam

Peters

Tuinier

et al. 1998

Journal of Colloid and Interface Science

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“…Understanding how the types of polyelectrolyte, adsorbent, electrolyte, surfactant, pH and temperature influence the adsorption helps to provide the best conditions for the desired field of applications. Because of that over the past few years research on polysaccharides adsorption has been continued and extended (Hoogendam et al 1998;Cohen Stuart et al 1998;Rojas and Neuman 1999;Liu et al 2006;Wang and Somasundaran 2006;Li et al 2007). According to the recent knowledge, not only the amount of polymer adsorption but also structure of adsorbed polymer layer is determined by many factors.…”

Section: Introductionmentioning

confidence: 99%

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

Grządka

2011

Cellulose

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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.

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“…Adsorption studies on model colloidal particles (19) and at solid-liquid interfaces (13) have therefore been employed to gain insight into the adsorption mechanisms of cellulose polymer excipients used during pharmaceutical processing.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Ethyl(hydroxyethyl)cellulose onto Silica Particles: The Role of Surface Chemistry and Temperature

Kapsabelis

Prestidge

2000

Journal of Colloid and Interface Science

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Adsorption of cellulose derivatives on inorganic oxides

Cited by 22 publications

References 23 publications

Effective Viscosity of Polymer Solutions: Relation to the Determination of the Depletion Thickness and Thickness of the Adsorbed Layer of Cellulose Derivatives

Effective Viscosity of Polymer Solutions: Relation to the Determination of the Depletion Thickness and Thickness of the Adsorbed Layer of Cellulose Derivatives

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

Adsorption of Ethyl(hydroxyethyl)cellulose onto Silica Particles: The Role of Surface Chemistry and Temperature

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