温度和溶剂对PS-b-PEO嵌段共聚物Langmuir单层等温线的影响

In this work, effects of subphase temperature and solvent on the aggregation behavior of diblock copolymer polystyrene-block-poly(ethylene oxide) (PS-b-PEO) at the air/water interface were studied. Surface pressure-molecular area (π-A) isotherms of the Langmuir monolayers at different temperatures were obtained through the Langmuir monolayer technique. The results showed that temperature effect on the isotherms mainly appeared at the platform region. With the increase of temperature, platform surface pressure increased step by step. Furthermore, the isotherm of the monlayer spread with chloroform moves to the right of that with toluene.