Manipulation of nanofiller and polymer structures by using equal channel angular extrusion

This study examined how an equal channel angular extrusion (ECAE) process manipulates the structural parameters of nanoclay and polymer in polyamide-6/clay nanocomposites. The ECAE process alters the aspect ratio and the orientation of the nanoclay, as well as the crystalline structures of polyamide-6. After processing the one-pass ECAE (A1), the nanoclays were shortened, well-aligned and closely packed, and the crystalline lamellae were compressed and diagonally well oriented. The two-pass ECAE process with a 180° rotation between passes (C2), however, leads to a random dispersion of nanoclay particles, and the recovery of the packed nanoclay interlayer spacing and the compressed lamellar long period.

[1]  Sang A Han,et al.  Electrical and Thermal Conductivities of Stycast 1266 Epoxy/Graphite Composites , 2011 .

[2]  W. Choi,et al.  Direct Growth of Carbon Nanotubes with a Catalyst of Nickel Nanoparticle-coated Alumina Powders , 2011 .

[3]  Jeong-Cheol Kim,et al.  Synthesis and characterization of colorless polyimide nanocomposite films containing pendant trifluoromethyl groups , 2008 .

[4]  Hung-Jue Sue,et al.  Morphological characterization of nylon-6 nanocomposite following a large-scale simple shear process , 2005 .

[5]  H. Sue,et al.  Effects of clay orientation and aspect ratio on mechanical behavior of nylon-6 nanocomposite , 2005 .

[6]  Hung-Jue Sue,et al.  Mechanical behavior of polymethylmethacrylate with molecules oriented via simple shear , 2005 .

[7]  T. Creasy,et al.  Fiber Orientation during Equal Channel Angular Extrusion of Short Fiber Reinforced Thermoplastics , 2004 .

[8]  A. Clearfield,et al.  Epoxy Nanocomposites Based on the Synthetic α-Zirconium Phosphate Layer Structure , 2004 .

[9]  T. D. Fornes,et al.  Modeling properties of nylon 6/clay nanocomposites using composite theories , 2003 .

[10]  M. Rocha,et al.  Mechanical and rheological properties of composites based on polyolefin and mineral additives , 2002 .

[11]  T. D. Fornes,et al.  Nylon 6 nanocomposites: the effect of matrix molecular weight , 2001 .

[12]  Z. Xia,et al.  Dynamic mechanical behavior of oriented semicrystalline polyethylene terephthalate , 2001 .

[13]  J. Kressler,et al.  Influence of nanofillers on the deformation process in layered silicate/polyamide-12 nanocomposites , 2001 .

[14]  B. Hsiao,et al.  Morphological Changes during Secondary Crystallization and Subsequent Melting in Poly(ether ether ketone) as Studied by Real Time Small Angle X-ray Scattering , 1996 .

[15]  Toshio Kurauchi,et al.  Interaction of nylon 6‐clay surface and mechanical properties of nylon 6‐clay hybrid , 1995 .

[16]  Toshio Kurauchi,et al.  Mechanical properties of nylon 6-clay hybrid , 1993 .

[17]  T. Kurauchi,et al.  Swelling behavior of montmorillonite cation exchanged for ω-amino acids by ∊-caprolactam , 1993 .