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Radiation-Induced Grafting with One-Step Process of Waste Polyurethane onto High-Density Polyethylene

Radiation Research Division for Industry and Environment, Korea Atomic Energy Research Institute, 1266 Sinjeong-dong, Jeongeup-si, Jeollabuk-do 580-185, Korea
Author to whom correspondence should be addressed.
Academic Editor: Der-Jang Liaw
Materials 2016, 9(1), 13;
Received: 4 September 2015 / Revised: 1 December 2015 / Accepted: 22 December 2015 / Published: 29 December 2015
The recycling of waste polyurethane (PU) using radiation-induced grafting was investigated. The grafting of waste PU onto a high-density polyethylene (HDPE) matrix was carried out using a radiation technique with maleic anhydride (MAH). HDPE pellets and PU powders were immersed in a MAH-acetone solution. Finally, the prepared mixtures were irradiated with an electron beam accelerator. The grafted composites were characterized by Fourier transformed infrared spectroscopy (FT-IR), surface morphology, and mechanical properties. To make a good composite, the improvement in compatibility between HDPE and PU is an important factor. Radiation-induced grafting increased interfacial adhesion between the PU domain and the HDPE matrix. When the absorbed dose was 75 kGy, the surface morphology of the irradiated PU/HDPE composite was nearly a smooth and single phase, and the elongation at break increased by approximately three times compared with that of non-irradiated PU/HDPE composite. View Full-Text
Keywords: waste; polyurethane; radiation grafting; recycling; polyethylene waste; polyurethane; radiation grafting; recycling; polyethylene
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MDPI and ACS Style

Park, J.-S.; Lim, Y.-M.; Nho, Y.-C. Radiation-Induced Grafting with One-Step Process of Waste Polyurethane onto High-Density Polyethylene. Materials 2016, 9, 13.

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