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

Materials

Jong-Seok Park¹  Youn-Mook Lim²  Young-Chang Nho² 

[1] Radiation Research Division for Industry and Environment, Korea Atomic Energy Research Institute, 1266 Sinjeong-dong, Jeongeup-si, Jeollabuk-do 580-185, Korea

关键词: waste;    polyurethane;    radiation grafting;    recycling;    polyethylene;   

DOI  :  10.3390/ma9010013

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.