| Improvement of red mud polymer-matrix nanocomposites by red mud surface treatment. | |
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MedLine Citation:
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PMID: 15752803 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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The effects of chemical treatments on red mud (RM) were investigated in terms of thermal stabilities of PMMA/RM and PVC/RM nanocomposites. N2/77 K adsorption behavior and contact angles were studied in the pore structures and surface energetics of RM, respectively. Thermal stabilities of the nanocomposites were investigated using a thermal mechanical analyzer (TMA) and thermogravimetric analysis (TGA). As a result, the acidically treated RM (ARM) had higher adsorption properties, including specific surface area, than untreated RM (VRM) or basically treated RM (BRM). A change in the structure of the ARM surface was due to hydrolysis or leaching a metal salt out of RM. Also, the electron acceptor (gamma(S)+, acid) of ARM and the electron donor (gamma(S)-, base) of BRM were increased in the development of acid and basic functional groups, respectively. PMMA/ARM nanocomposites had higher thermal stability and mechanical interfacial properties than PMMA/VRM or BRM nanocomposites. These results were due to the improvements of the dispersion properties and acid-base interfacial interactions of basic PMMA and ARM. In this work, although the dispersion properties of the BRM decreased, the thermal stabilities and mechanical interfacial properties of PVC/BRM nanocomposites increased, which could be attributed to improvement in the interfacial interactions between acidic PVC and BRM. |
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Authors:
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Soo-Jin Park; Byung-Ryul Jun |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of colloid and interface science Volume: 284 ISSN: 0021-9797 ISO Abbreviation: J Colloid Interface Sci Publication Date: 2005 Apr |
Date Detail:
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Created Date: 2005-03-08 Completed Date: 2006-06-22 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0043125 Medline TA: J Colloid Interface Sci Country: United States |
Other Details:
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Languages: eng Pagination: 204-9 Citation Subset: - |
Affiliation:
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Advanced Materials Division, Korea Research Institute of Chemical Technology, P.O. Box 107, Yusong, Taejon 305-600, South Korea. psjin@krict.re.kr |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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