Polyacrylonitrile/Nylon 6 Blends: Preparation and Characterization

✍ Scribed by Annadanam V. Sesha Sainath; Takashi Inoue; Yoshiharu Hatakeyama; Masahiro Shishido; Kenzo Okamoto; Seigou Kawaguchi; Takashi Kuriyama; Kiyohito Koyama

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 212 KB
• Volume: 289
• Category: Article
• ISSN: 1438-7492
• DOI: 10.1002/mame.200300242

✦ Synopsis

Abstract

Summary: Polyacrylonitrile (PAN) particles with micro‐size ranges (0.15–2 μm) were prepared by emulsion and dispersion polymerizationa and in supercritical carbon dioxide media. The PAN particles were blended with Nylon 6 (PA6) at 220 °C by using a miniature mixer; it was found that melt‐mixing was possible for PAN‐rich compositions as high as 70 wt.‐%. Blends were characterized by scanning electron microscopy, IR, viscosity measurements, differential scanning calorimetry, and dynamic mechanical thermal analysis (DMTA). The size and shape of original PAN particles were retained in PAN/PA6 blends. The useful range to blend PAN particles size was less than 1 μm in terms of shape retention of the PAN particles in blends. Blends with 40 wt.‐% PAN content were found to be melt‐processable. The elastic modulus was higher for PAN/PA6 blends than pure PA6.

SEM photograph of PAN‐SC/PA6 blend with a 40/60 weight ratio.

imageSEM photograph of PAN‐SC/PA6 blend with a 40/60 weight ratio.