采用超临界溶胀渗透法,将成核剂(DM和NA21)分散到等规聚丙烯(iPP)的基体内部,结果表明,分散后成核剂的形态、聚集状态及均匀性与成核剂本身的性质有关.NA21成核剂在iPP中以分子状态渗透并呈均匀分布,其自组装形成的纳米单元大小在50 nm~100 nm之间.MD成核剂则以分散前相似的棒状单晶形式排列,显示出明显的团聚.还采用Jeziorny方法拟合出非等温结晶动力学参数;并对溶胀渗透NA21前后的iPP样品的结晶动力学进行了比较.
参考文献
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