原位聚合法制备超疏水的聚乙烯纳米复合材料

Synthesis of Superhydrophobic Surface of Polyethylene via in Situ Ziegler-Natta Polymerization

采用一种新方法将Ziegler-Natta催化剂组分TiCl4和MgCl2负载到蒙脱土(MMT)的层间,制备了TiCl4/MgCl2/MMT插层型催化剂.利用Ziegler-Natta催化剂特有的"形态复制效应",通过乙烯原位聚合制备出了表面具有花瓣状形态的聚乙烯纳米复合材料.这种聚乙烯纳米复合材料的表面与水的接触角达到(152.2±0.8)°,呈现超疏水性质.

A new strategy for fabricating polyethylene （PE） superhydrophobic surface by utilizing the feature of ＂morphology duplicating effect＂ of Ziegler-Natta catalyst was investigated. The Ziegler-Natta catalyst components （MgCl2 and TiCl4） were first intercalated in between the montmorillonite （MMT） gallery and then the PE/MMT nanocomposite was prepared via in situ Ziegler-Natta polymerization. The surface morphology of PE/ MMT was highly rough with a petal-like microstructure. The film made from such nanocomposite has the superhydrophobic performance with a water contact angle of （152.2 ±0.8）° without any modification by the low surface free energy material.