Colloid and Polymer Science

, Volume 281, Issue 10, pp 951–956

Flammability and phase-transition studies of nylon 6/montmorillonite nanocomposites

  • Shaofeng Wang
  • Yuan Hu
  • Zhenlong Li
  • Zhengzhou Wang
  • Yonglong Zhuang
  • Zuyao Chen
  • Weicheng Fan
Original Contribution

DOI: 10.1007/s00396-002-0858-x

Cite this article as:
Wang, S., Hu, Y., Li, Z. et al. Colloid Polym Sci (2003) 281: 951. doi:10.1007/s00396-002-0858-x

Abstract

Nylon 6 (PA6)/clay hybrids have been prepared using a direct melt intercalation technique by two processes. One is PA6 melt-mixing with modified clay, the other is PA6 melt-mixing with natural (Na+ base) clay using an ammonium salt bearing long alkyl chains as a polymer/clay reactive compatibilizer. Their structure and flammability properties are characterized by X-ray diffraction, transmission electron microscopy and cone calorimeter experiments. The results of the cone calorimeter experiments show that hybrids made by these two processes have a lower heat release rate peak and higher thermal stability than that of original PA6. Meanwhile, X-ray diffraction was used to investigate PA6/clay hybrids with various cooling histories from the melt, including medium-rate cooling (air cooling) and rapid cooling (water-quenched). In contrast to pure PA6 dominated by the α phase, the addition of clay silicate layers by these two methods favors the formation of the γ crystalline phase in PA6/clay hybrids. Flammability and phase-transition studies confirm that silicate layers added by these two methods have a similar nanoeffect and nanodispersion in the PA6 matrix.

Keywords

Nylon 6NanocompositesX-ray diffractionCrystallization

Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • Shaofeng Wang
    • 1
    • 2
  • Yuan Hu
    • 1
  • Zhenlong Li
    • 2
  • Zhengzhou Wang
    • 1
  • Yonglong Zhuang
    • 3
  • Zuyao Chen
    • 2
  • Weicheng Fan
    • 1
  1. 1.State Key Laboratory of Fire Science, University of Science and Technology of ChinaHefei China
  2. 2.Department of ChemistryUniversity of Science and Technology of ChinaHefei China
  3. 3.Structure Research LaboratoryAnhui UniversityHefei China