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Materials 2016, 9(1), 13; doi:10.3390/ma9010013

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
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Academic Editor: Der-Jang Liaw
Received: 4 September 2015 / Revised: 1 December 2015 / Accepted: 22 December 2015 / Published: 29 December 2015
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Abstract

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
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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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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