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Titolo:
Effect of silane coupling agents on properties of precipitated sodium-aluminium silicates
Autore:
Krysztafkiewicz, A; Werner, R; Lipska, LK; Jesionowski, T;
Indirizzi:
Poznan Univ Technol, Inst Chem Technol & Engn, PL-60695 Poznan, Poland Poznan Univ Technol Poznan Poland PL-60695 Engn, PL-60695 Poznan, Poland
Titolo Testata:
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
fascicolo: 1-3, volume: 182, anno: 2001,
pagine: 65 - 81
SICI:
0927-7757(20010630)182:1-3<65:EOSCAO>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
CLAY-MINERALS; MODIFIED SURFACE; ADSORPTION; COATINGS; SORPTION;
Keywords:
sodium-aluminium silicates; surface modification; silane coupling agents;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Jesionowski, T Poznan Univ Technol, Inst Chem Technol & Engn, Pl M Sklodowskiej Curie 2, PL-60695 Poznan, Poland Poznan Univ Technol Pl M Sklodowskiej Curie 2 Poznan Poland PL-60695
Citazione:
A. Krysztafkiewicz et al., "Effect of silane coupling agents on properties of precipitated sodium-aluminium silicates", COLL SURF A, 182(1-3), 2001, pp. 65-81

Abstract

Sodium-aluminium silicates of highly dispersion degree were obtained. Studies on the surface modification of sodium-aluminium silicates using silane coupling agents are described. The best modifiers were selected, which induced a change of the silicate surface from a hydrophilic to a hydrophobic one. Physicochemical analyses of the obtained silicates were performed. The methods of evaluating the degree of surface modification of the silicate were presented. Near infrared spectroscopy was used to determine the degree ofcondensation of the silicate surface silanol groups. The degree of hydrophobization of silicate surface was determined by a calorimetric method. Studies on morphology and microstructure using transmission electron microscopywere performed. Moreover, particle size and tendency to form primary and secondary agglomerate structures were determined. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 18/11/17 alle ore 03:41:12