Radiation preparation of nano-powdered styrene-butadiene rubber (SBR) and its toughening effect for polystyrene and high-impact polystyrene
- 作者：Daishuang Li ; Haibing Xia ; Jing Peng ; Maolin Zhai ; Genshuan Wei ; Jiuqiang Li ; Jinliang Qiao
- 关键词：Radiation crosslinking ; Nano-powdered styrene-butadiene rubber (NPSBR) ; Crosslinking agents ; Toughening
- 刊名：Radiation Physics and Chemistry
- 出版年：2007
- 期刊代码：68_0969806x
- 类别：ph
- 出版时间：November-December 2007
- 卷：76
- 期：11-12
- 页码：1732-1735
- 文件大小：272 K
摘要
Nano-powdered styrene-butadiene rubber (NPSBR) was synthesized based on the styrene-butadiene rubber (SBR) latex via gamma radiation crosslinking followed by spray drying. Two functional monomers, 2-ethyl hexyl acrylate (2-EHA) and trimethylolpropane triacrylate (TMPTA) were used as crosslinking agents. It was found that both 2-EHA and TMPTA can improve the radiation crosslinking of SBR latex. Transmission electron microscope (TEM) and scanning electron microscope (SEM) revealed that the NPSBR has a particle size similar to that of SBR latex with a diameter of 100 nm due to the high degree of crosslinking of SBR. Mechanical testing results showed that NPSBR could toughen polystyrene (PS) and high-impact polystyrene (HIPS) effectively. In addition, NPSBR is more suitable to toughen HIPS than PS at low rubber content.