1. Technical Field
The disclosure relates to a spinning solution, nanofibers, and an ion-exchange material. More particularly, this disclosure is related to an electrospinning solution, polyvinyl alcohol nanofibers, and an ion-exchange membrane thereof.
2. Description of Related Art
The precision requirement of semiconductor manufacturing processes has increased, and thus the focus of the pollution prevention has been transferred from particulates to gaseous molecular contaminants. Generally speaking, the pollution from polar gases or ionic gases, such as NH3 and NH4+, is more serious for both semiconductor processes and display panel processes. Presently, besides active carbon and ion-exchange resin, a method that can effectively remove the pollution of polar gases or ionic gases has not been developed. Active carbon can filter out some gaseous contaminants, but the adsorption of polar gases, such as ammonia (NH3), or other trace gases is very poor. Moreover, the adsorbed gases may be released by the active carbon again. Recently, the developed ion-exchange fibrous filter can solve the problems of the active carbon. However, the fiber fineness is not enough, which leads to the smaller contact surface between the fibrous filter and the gases and limited ion-exchange efficiency.