4. Conclusion
In summary, reinforced CS@MWCNTs/PLLA photothermal membranes obtained by solvent-induced recrystallization are reported in this work. The photothermal membrane exhibits a nanowrinkled structure with a high specific surface area, which provides more light absorption and enhances the photothermal effectiveness of the membrane. The photothermal film can heat up instantaneously and maintain between 60~75˚C at 800Wm-2 sun irradiation, which provides excellent photothermal performance. The innovative solvent-induced recrystallization procedure can greatly improve the mechanical properties and micro-morphology of the electrospun membrane without sacrificing the wearing comfort of the flexible membrane and is potentially applicable to other electrospun membranes.