Molecular configuration of adsorbed cis- and trans-1, 2-ethylene dicarboxylic acids and interparticle forces in colloidal dispersions
Leong, Y.K. (2002) Molecular configuration of adsorbed cis- and trans-1, 2-ethylene dicarboxylic acids and interparticle forces in colloidal dispersions. Langmuir, 18 (6). pp. 2448-2449.
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View at Publisher Website: http://dx.doi.org/10.1021/la015603i
[Extract] There has not been a study linking the molecular configuration of adsorbed small charged molecules and the interparticle forces in flocculated dispersions. This study will illustrate the linkage with cis- and trans-1,2-ethylene dicarboxylic acids in a 24 vol%R-Al2O3 dispersion. The interparticle forces were evaluated from the yield stress1-8 of the dispersion. The cis-form acid weakens the flocculated network structure by forming a steric layer. The trans-form acid greatly reinforces this structure by bridging at the joints and network junctions. As a result, the dispersion developed a high yield stress and viscosity. This study may give rise to a new family of thickening agents based on small organic molecules that may be of use in products such as toothpaste, printing inks, cosmetics, paints, concrete mix, and paper-coating slurries.
|Item Type:||Article (Refereed Research - C1)|
This publication does not have an abstract. The first paragraph of the introduction is displayed as the abstract.
|Keywords:||bridging; dispersions; yield stress|
|FoR Codes:||03 CHEMICAL SCIENCES > 0306 Physical Chemistry (incl Structural) > 030603 Colloid and Surface Chemistry @ 100%|
|SEO Codes:||86 MANUFACTURING > 8601 Processed Food Products and Beverages (excl. Dairy Products) > 860199 Processed Food Products and Beverages (excl. Dairy Products) not elsewhere classified @ 100%|
|Deposited On:||20 Dec 2010 12:35|
|Last Modified:||12 Feb 2011 20:16|
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