Investigation on unusual crystallization behavior in polyamide 6/montmorillonite nanocomposites

QC 20100525
Validerad; 2002; 20091023 (andbra)
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.

TEKNIK OCH TEKNOLOGIER Materialteknik Kompositmaterial och -teknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Composite Science and Engineering hsv//eng
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
Polymera konstruktionsmaterial

Wu, Q. J.Luleå tekniska universitet (author)
Berglund, Lars A.Luleå tekniska universitet(Swepub:kth)u1wqz3r1 (author)
Qi, Z. N.State Key Laboratory of Engineering Plastics, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing (author)
Luleå tekniska universitetState Key Laboratory of Engineering Plastics, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing (creator_code:org_t)

By the author/editor: Liu, X. H.; Wu, Q. J.; Berglund, Lars A ...; Qi, Z. N.

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Composite Scienc ...

By the university: Royal Institute of Technology; Luleå University of Technology

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