Article

Journal of Wuhan University of Technology-Mater. Sci. Ed.

, Volume 26, Issue 4, pp 615-619

First online:

Polyurethane grafted attapulgite as novel fillers for nylon 6 nanocomposites

  • Jianshe Shi史建设Affiliated withKey Laboratory for Soft Chemistry and Functional Material of the Ministry Education, Nanjing University of Science and Technology Email author 
  • , Xujie Yang杨绪杰Affiliated withKey Laboratory for Soft Chemistry and Functional Material of the Ministry Education, Nanjing University of Science and Technology
  • , Qiaofeng HanAffiliated withKey Laboratory for Soft Chemistry and Functional Material of the Ministry Education, Nanjing University of Science and Technology
  • , Xin WangAffiliated withKey Laboratory for Soft Chemistry and Functional Material of the Ministry Education, Nanjing University of Science and Technology
  • , Lude LuAffiliated withKey Laboratory for Soft Chemistry and Functional Material of the Ministry Education, Nanjing University of Science and Technology

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Abstract

Attapulgite fibers were modified by polyurethane, forming polyurethane grafted attapulgite (AT-PU), which was confirmed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Nylon 6/AT-PU nanocomposites of different modified attapulgite loadings were prepared by melt blending in a twin screw extruder. Scanning electron microscopy (SEM) observation on the fracture surfaces of the nanocomposites showed not only a uniform dispersion of AT-PU but also a strong interfacial adhesion with the matrix. Differential scanning calorimeter (DSC) and Thermogravimetric analyzer (TGA) were used to illustrate the influence of AT-PU particles on the thermal properties of the nylon 6/AT-PU nanocomposites. The results indicated that the addition of attapulgite probably induced the heterogeneous nucleation and was favorable for the formation of γ -crystalline form, and that the higher thermal stability was obtained for the composites.

Key words

polyurethane grafted attapulgite nylon 6 nanocomposites