Inverse Gas Chromatographic Characterization of Aluminosilicates as Fillers for Abrasive Articles

Abstract

The surface properties of aluminosilicates (perlites and zeolites)-potential fillers in abrasive articles-have been examined by inverse gas chromatography. The dispersive component of the surface free energy (c D S ) and K A and K D describing the acidity and basicity, respectively, of the fillers were used to express the surface activity of examined materials. The Flory-Huggins parameter, v 0 23 ; characterized the interactions between polymer and filler, i.e., interactions between phenolic resin and filler. Zeolites were found to be materials with an active surface layer and relatively high ability to participate in filler-resin interactions. Therefore, they might be considered as potential ''replacement material'' for standard fillers. The IGC-derived values mentioned above provided useful information about the behavior of fillers during the manufacture and use of abrasive articles.

Surface characterization of standard cotton fibres and determination of adsorption isotherms of fragrances by IGC

“…The isotherm determination, the measurement of surface and free energy, as well as the calculation of acid–base parameters, and the determination of the surface heterogeneity and heat of sorption have been discussed by Thielmann . Furthermore, IGC has been used for the determination of surface properties of various solid materials such as cellulose, wood meal, silicates and starch . Rjiba et al .…”

Relationship between processing, surface energy and bulk properties of ultrafine silk particles

“…Eri silk has acidic and basic amino acids and therefore the result is consistent with the chemistry of silk structure [35]. The surface chemistry of the samples was also assessed using the Gutmann acid (K a ) and base (K b ) numbers, calculated using the specific free energy of adsorption (ΔG SP) values of polar probes [36]. Fig.…”

Characterization of a natural zeolite with inverse gas chromatography to assess its feasibility as adsorbent

“…The surface chemistry allows establishing the ability of the surface of a porous material to participate in dispersive and specific interactions with an adsorbate, as well as the acidbase character of the solid. 7 This last property is especially important in the case of adsorbing metal ions, as the process is strongly dependent on pH (e.g., according to literature, cobalt precipitates as hydroxide when the pH is above 8 8 ).…”