2003
DOI: 10.1016/s0021-9797(03)00030-4
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Electrokinetic parameters of colloidal model systems: analysis and comparison between dilute and concentrated dispersions

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Cited by 9 publications
(15 citation statements)
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“…Certainly the ζ potential calculated from the Smoluchowski equation (Malvern) is severely underestimated due to the factors discussed in Section 1, and in more detail in Refs. [2][3][4][5][6]. For example, the results from Figs.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Certainly the ζ potential calculated from the Smoluchowski equation (Malvern) is severely underestimated due to the factors discussed in Section 1, and in more detail in Refs. [2][3][4][5][6]. For example, the results from Figs.…”
Section: Resultsmentioning
confidence: 99%
“…The effect of the ionic strength on the ζ potentials of latexes has been extensively studied [2][3][4][5][6] An apparent maximum in the absolute value of ζ potential is often found at an electrolyte concentration of about 10 −3 -10 −2 M, but this maximum usually disappears when the conductivity in the stagnant layer is properly accounted for, and the absolute value of the ζ potential decreases when the ionic strength increases according to the expectations [7]. Very little is known about the electrokinetic properties of latexes at electrolyte concentrations >0.1 M. The problems with measurements at high ionic strengths by means of standard equipment are discussed in detail elsewhere [8].…”
Section: Introductionmentioning
confidence: 99%
“…Streaming potential (SP) measurements have been suggested as a potentially useful tool to monitor the adsorption from solution [20][21][22][23][24][25][26]. SP in combination with the electrical conductivity measurements allows for the evaluation of ζ-potential taking into account the surface conduction phenomenon, which affects significantly the calculated ζ-potential values [27,28]. It is well known that the adsorption on the surface of crystalline materials of dissolved species results in changes of their ζ-potential.…”
Section: Introductionmentioning
confidence: 99%
“…Linear dependence between the ζ-potential of a substrate and the adsorbed amount of an adsorbate like a protein may be assumed, provided that surface potential changes are proportional to the surface coverage. The advantage of the SP technique is the possibility to handle planar surfaces, cylindrical capillaries, and packed beds of granular or fibrous materials [27][28][29][30].…”
Section: Introductionmentioning
confidence: 99%
“…Επειδή με την τεχνική της μέτρησης του ρευματικού δυναμικού είναι δυνατή η ταυτόχρονη μέτρηση της ηλεκτρικής αγωγιμότητας του πορώδους δισκίου, το οποίο αποτελείται από τα πακτωμένα σωματίδια του στερεού, μπορούμε να υπολογίσουμε το ζ δυναμικό λαμβάνοντας υπόψιν την επίδραση της επιφανειακής αγωγιμότητας. Η επίδραση της επιφανειακής αγωγιμότητας στον υπολογισμό του ζ δυναμικού, ιδιαίτερα σε σχετικά χαμηλές τιμές ιοντικής ισχύος είναι σημαντική [15,16]. Η μελέτη των ιδιοτήτων της ηλεκτρικής διπλοστοιβάδας σε δισκία υδροξυαπατίτη, με διαφορετικούς βαθμούς πάκτωσης, ευρισκόμενα σε ισορροπία με διαφορετικές συγκεντρώσεις αδρανούς ηλεκτρολύτη, με την τεχνική της μέτρησης του ρευματικού δυναμικού, αποτελεί το δεύτερο στόχο της Διατριβής.…”
Section: εισαγωγη -στοχοιunclassified