聚苯乙烯-聚丁二烯嵌段聚合物有序多孔膜在可收缩膜上的形变和光学性质

Shrinking and Light Diffraction of the Self-Organized Polystyrene-block-Polybutadiene Microporous Film Deposited on a Stretched Polymer Film by Thermal Contraction

利用溶剂散逸自组装法在潮湿的条件下,制备了聚苯乙烯-聚丁二烯嵌段聚合物(PS-b-PB)有序多孔膜。利用聚乙烯可收缩膜将PS-b-PB多孔膜进行两次收缩,形成小孔径的有序多孔膜。通过收缩,膜上的孔由圆形变为长方形或者梭形,孔的尺寸从微米级收缩至亚微米级。利用扫描电子显微镜对膜收缩过程中2种形状产生的机理进行了研究。结果表明,PS-b-PB结合了聚苯乙烯(PS)和聚丁二烯(PB)两个均聚物的优点,收缩后仍然保持膜结构的平整性,从而将不可见的热场变化转变为可见的光学变化。

Polystyrene-block-polybutadiene（PS-b-PB） microporous polymer honeycomb films with hexagonal pores were prepared by solvent evaporating self-organization under humid conditions （polystyrene-block- polyb utadiene, referred to as：PS-b-PB, the same below）. The PS-b-PB honeycomb films were shrunk twice by using polythene shrinkable films to form ordered porous film with small pores. The pores in film c hanged from circular to rectangular or fusiform after shrinkage; the pore size of film was shrunk from micron into submieron. Scanning electron microscopy （SEM） was used to study the generation mechanism of two films. The results showed that PS-b-PB could transform the invisible thermal field signals into visible optical signals based on the advantages combination of polystyrene and polybutadiene which fiat films structure remained after contraction.