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Investigation on unusual crystallization behavior in polyamide 6/montmorillonite nanocomposites
2002 (English)In: Macromolecular materials and engineering (Print), ISSN 1438-7492, E-ISSN 1439-2054, Vol. 287, no 8, 515-522 p.Article in journal (Refereed) Published
Abstract [en]

The crystallization behavior and crystal structure of polyamide 6/montmorillonite (PA6/MMT) nanocomposites were investigated by differential scanning calorimetry and X-ray diffraction, and an interesting behavior was observed. The material was prepared via melt compounding using an organophilic clay obtained by co-intercalation of epoxy resin and quaternary ammonium into Na-montmorillonite. A maximum in degree of crystallinity was obtained at 5 wt.-% MMT and the reasons for this, based on the MMT layer distribution, were discussed. The degree of crystallinity showed a strong dependence on the cooling rates. In contrast with typical behavior, a higher cooling rate resulted in a higher degree of crystallinity. In nanocomposites, the gamma-crystalline phase was dominant.

Place, publisher, year, edition, pages
2002. Vol. 287, no 8, 515-522 p.
Keyword [en]
crystallization behavior, crystal structure, polyamide 6/montmorillonite nanocomposites, nylon 6-clay hybrid, silicate nanocomposites, clay nanocomposites, nylon-6-clay hybrid, melt-intercalation, gamma-form, crystal, montmorillonite, transformation, copolyester
Identifiers
URN: urn:nbn:se:kth:diva-21915ISI: 000178131400004OAI: oai:DiVA.org:kth-21915DiVA: diva2:340613
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Berglund, Lars A.

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