Development of Styrene-Grafted Polyurethane by Radiation-Based Techniques.

Jin-Oh Jeong,Youn-Mook Lim,Jong-Seok Park

doi:10.3390/ma9060441

Abstract

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.

Highlights

Due to their excellent physical properties and low price, polyolefin-based polymers have recently gained wide use in daily life. This class of general-purpose polymers forms the largest section of the consumer market, partly because they are commonly used in household goods and industrial structural materials [1,2,3]
Scheme1,1,ititisispossible possibletoto infer two possible routes styrene grafting onto radiation
The double bond of the styrene was by broken by radiation, causing radical information the branchinand to thegrafting carbonyltogroup of PU

Summary

Introduction

Due to their excellent physical properties and low price, polyolefin-based polymers have recently gained wide use in daily life. Polyolefin-based polymer resins, such as Polypropylene (PP), Polyethylene (PE), Polyvinyl chloride (PVC), and Polystyrene (PS), have been most frequently used Their excellent performance mechanical strength and workability make them quite versatile, but their low impact resistance is a disadvantage. To improve heat resistance, blending of PU and polyolefin-based polymers was required [8] These blended composites were developed for use in branching and to improve upon disadvantages of the individual polymers [9]. The blending of polyolefin-based polymers and PU was completed by grafting hydrophobic monomers of styrene onto PU using gamma irradiation. High-performance composite materials using radiation techniques has been confirmed

Materials

Preparation of Styrene Grafted Polyurethane

Results and and Discussion

Remaining

Conclusions