High-temperature X-ray diffraction studies on polyamide6/clay nanocomposites upon annealing

QC 20100525
Validerad; 2002; 20091014 (andbra)
The influence of nanodispersed clay on the alpha crystalline structure of polyamide 6 (PA6) was examined in-situ with X-ray diffraction (XRD) between room temperature and melting. In pure PA6 upon annealing the alpha crystalline phase was substituted by an unstable pseudohexagonal phase at 150degreesC, then it transformed into a new stable crystalline structure - high temperature alpha' phase above the transition temperature. However, in PA6/clay nanocomposite (PA6CN), the alpha phase did not present crystalline phase transition on heating. The increase in the annealing temperature only led to continuous intensity variation. The different behaviors were caused by the confined spaces formed by silicate layers, which constrained the mobility of the polymer chains in-between.

Wu, Q. J.Luleå tekniska universitet (author)
Zhang, Q. X.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China (author)
Berglund, Lars A.Luleå tekniska universitet(Swepub:kth)u1wqz3r1 (author)
Mo, Z. S.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China (author)
Luleå tekniska universitetState Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China (creator_code:org_t)

In:Polymer Bulletin: Springer Science and Business Media LLC48:05-apr, s. 381-3870170-08391436-2449

By the author/editor: Liu, X. H.; Wu, Q. J.; Zhang, Q. X.; Berglund, Lars A ...; Mo, Z. S.

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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