Research for Preparation and Properties of Chitin/Polylactic Acid Piezoelectriccomposite Membrane
With the development of smart wearable field,it is of great significance to develop environment-friendly piezoelectric materials.This study prepared Chitin/polylactic acid composite fiber membranes by electrospinning and studied its piezoelectric properties.The results show that when chitin content is 1.5％,spinning voltage is 18 kV and receiving roller speed is 100 rpm,the output voltage of chitin/polylactic acid composite fiber membrane is about 2.2 V,which is 2.5 times that of polylactic acid fiber membrane.The piezoelectric properties of the compos-ite fiber membrane increase with the increase of the thickness,pressure and stress area.The fiber membrane has good degradation performance and stability,and can be used to monitor human behavior and vital signs in real time.
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