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Development of Styrene-Grafted Polyurethane by Radiation-Based Techniques

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: Volker Altstädt
Materials 2016, 9(6), 441;
Received: 23 February 2016 / Revised: 27 May 2016 / Accepted: 31 May 2016 / Published: 2 June 2016
(This article belongs to the Special Issue Polymer Blends and Compatibilization)
Polyurethane (PU) is the fifth most common polymer in the general consumer market, following Polypropylene (PP), Polyethylene (PE), Polyvinyl chloride (PVC), and Polystyrene (PS), and the most common polymer for thermosetting resins. In particular, polyurethane has excellent hardness and heat resistance, is a widely used material for electronic products and automotive parts, and can be used to create products of various physical properties, including rigid and flexible foams, films, and fibers. However, the use of polar polymer polyurethane as an impact modifier of non-polar polymers is limited due to poor combustion resistance and impact resistance. In this study, we used gamma irradiation at 25 and 50 kGy to introduce the styrene of hydrophobic monomer on the polyurethane as an impact modifier of the non-polar polymer. To verify grafted styrene, we confirmed the phenyl group of styrene at 690 cm−1 by Attenuated Total Reflection Fourier Transform Infrared Spectroscopy (ATR-FTIR) and at 6.4–6.8 ppm by 1H-Nuclear Magnetic Resonance (1H-NMR). Scanning Electron Microscope (SEM), X-ray Photoelectron Spectroscopy (XPS), Thermogravimetric Analysis (TGA) and contact angle analysis were also used to confirm styrene introduction. This study has confirmed the possibility of applying high-functional composite through radiation-based techniques. View Full-Text
Keywords: polyurethane; styrene; grafting polymerization; gamma-irradiation polyurethane; styrene; grafting polymerization; gamma-irradiation
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Jeong, J.-O.; Park, J.-S.; Lim, Y.-M. Development of Styrene-Grafted Polyurethane by Radiation-Based Techniques. Materials 2016, 9, 441.

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