Skip to Content
MilliporeSigma
  • Reactive processing of recycled polycarbonate/acrylonitrile butadiene styrene.

Reactive processing of recycled polycarbonate/acrylonitrile butadiene styrene.

Environmental science & technology (2009-05-21)
Woo-Hyuk Jung, Yeon-Sil Choi, Jung-Min Moon, Nathan Tortorrela, Charles L Beatty, Jang-Oo Lee
ABSTRACT

Cellular phone housings were ground to make original particulates using a knife mill. Foams and adhesives with a lighter density than water were removed from ground mixtures using a sink-float process in water; ground metals, button rubbers, and wires were separated from desired materials by using a sink float process in salt All housing materials, consisting of seven thermoplastics included in cellular phone housings, showed better tensile properties than pure housing materials made of polycarbonate/acrylonitrile butadiene styrene, but they only had about half of the impact strength. In contrast, the low impact strength for all housing materials was improved by adding 25 wt % polyethylene elastomer and/or 2.4 wt % ground epoxy circuit boards for batch mixing. Impact strengths, tensile strengths, and the energy absorption ability of all housing materials were improved by adding 5.4wt% glycidyl methacrylate for twin screw extrusion.