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Polymers and Polymer Composites

INTERRELATION BETWEEN CONTACT ANGLE AND INTERLAYER SPACING OF MONTMORILLONITE CLAY USED IN POLYMER NANOCOMPOSITES

March 1, 2013 By: Lemiye Atabek Savas; Soner Savas Research article

Title: INTERRELATION BETWEEN CONTACT ANGLE AND INTERLAYER SPACING OF MONTMORILLONITE CLAY USED IN POLYMER NANOCOMPOSITES
Page Range: p.129-132
Author(s): Lemiye Atabek Savas; Soner Savas
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 21
Issue No: No.3

Abstract
In this study, the effect of interlayer d-spacing on the contact angle (-c) of montmorillonite nanoclays was investigated. Three type of montmorillonites, pure hydrophilic, modified with 35-45 wt.% dimethyl dialkyl (C14-C18) amine (Nanomer I.44P) and modified with (1-hexadecyl) tri-methylammonium bromide (HDTMAB), were used for comparison. According to the results, it was found that cations can be replaced by organic cations and interlayer spacing increases. Although organophilic montmorillonite clays whose surface energy is lowered and is more compatible with organic polymers, they shows hydrophobic behaviour with water. Modified clays were found to have a larger interlayer d-spacing and also a larger time-independent contact angle in comparison to the un-modified clay. 8 Refs.

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