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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/29297
Title: Adsorption of single-strand alkylammonium salts on bentonite, surface properties of the modified clay and polymer nanocomposites formation by a two-roll mill
Authors: Jumpei Hoshino
Sarintorn Limpanart
Srichalai Khunthon
Tanakorn Osotchan
Rakchart Traiphol
Toemsak Srikhirin
Mahidol University
Chulalongkorn University
Naresuan University
Keywords: Materials Science;Physics and Astronomy
Issue Date: 1-Oct-2010
Citation: Materials Chemistry and Physics. Vol.123, No.2-3 (2010), 706-713
Abstract: The adsorption of tallow alkylammonium salts onto bentonite from the Lopburi province in Thailand, and the effect of surface wettability on the formation of polymer-clay nanocomposites are reported. We looked specifically at octadecyltrimethyl ammonium chloride (S18), a popular member of the tallow alkylammonium salt family. The adsorption of S18 onto the bentonite interlayer can be divided into three distinct stages depending upon the initial concentration of S18. These stages are (a) monolayer formation, (b) intermediate state of double layer formation and (c) double layer formation. A decrease in surface energy driven by drops in the values of the polar and dispersive components was observed as the amount of surfactant surface coverage increased. Using thermal gravimetric analysis (TGA), the critical surface energy (CSE) of organoclay was found to decrease as the amount of absorbed S18 increased. S18 organoclay with different degrees of surface coverage was used in a two-roll mill to prepare high-density polyetheylene (HDPE)-clay nanocomposites. The oxidized polyethylene wax (OWax) was used as a dispersing agent to promote the delamination of the organoclay platelets. The results from X-ray diffraction (XRD) and transmission electron microscope (TEM) indicated a difference in the dispersing capability of the organoclay. © 2010 Elsevier B.V. All rights reserved.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77955322534&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/29297
ISSN: 02540584
Appears in Collections:Scopus 2006-2010

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