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Organic modification of montmorillonite for application in plasticized PVC nanocomposites
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.ORCID iD: 0000-0002-7724-2329
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Bygg och Mekanik, Rörcentrum.
2015 (English)In: Applied Clay Science, ISSN 0169-1317, E-ISSN 1872-9053, Vol. 107, p. 78-84Article in journal (Refereed) Published
Abstract [en]

A new type of organic compound for modifying clay minerals suitable for use in plasticized polyvinyl chloride was selected and studied. The theory of Hansen solubility parameters was used to predict the miscibility between potential organomodifiers and polyvinyl chloride. In a series of systematic experiments using four very different solvents (i.e., water, ethanol, tetrahydrofuran and chloroform) and three different types of Mt (i.e., Mt-Na+, Mt-PGV and Mt-Ca++), the importance of various parameters to the process of clay mineral intercalation was investigated. The effects of each combination were evaluated employing wide-angle X-ray diffraction and thermogravimetry. The results of swelling experiments on clay mineral in various solvents correlated well with the results of a theoretical preliminary study using Hansen solubility parameters. The extent of swelling followed the order H2O > EtOH > THF > chloroform. The d-spacing seemed to be little affected by the type of solvent used in the modification, while the type of Mt used was important to the intercalation results. Organomodification of Mt-Na+ increased the d-spacing by nearly 0.7 nm when tributyl citratewas used as a chelating agent. Similar modification of Mt-Ca++ showed an increase of 0.3 nm only. Furthermore, thermogravimetry and DTG curves showed significant structural differences between Mt-Na+ and Mt-Ca++.

Place, publisher, year, edition, pages
2015. Vol. 107, p. 78-84
Keywords [en]
Plasticized polyvinyl chloride, Nanoclay, Organomodification, Swelling, Hansen solubility parameter
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-6785DOI: 10.1016/j.clay.2015.01.006Local ID: 22517OAI: oai:DiVA.org:ri-6785DiVA, id: diva2:964625
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2019-07-08Bibliographically approved

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Enebro, Jonas

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