Abstract
AbstractHigh internal phase emulsion (HIPE) polymerization foaming process is controlled for the production of novel foams with various microcellular structures and morphologies. In this study, two types of organoclay and one type of natural clay, sodium montmorillonite (NaMMT) were introduced at different concentrations to control the microcellular morphologies, cell sizes and open cell contents. A scanning electron microscopy was used to observe the microcellular morphologies and open cell contents; volume expansion ratio (VER) and cell sizes were evaluated. It was believed that the open cell contents increased as organoclay content increased, due to the lowering of the viscosity ratio of dispersed to continuous phases, as a result of adding nanoclay into the oil phase of emulsion. A correlation between the open cell content and VER that depended on clay content was attempted and the result was quite satisfactory. Copyright © 2008 Curtin University of Technology and John Wiley & Sons, Ltd.
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