Nanostructure and Property of Electrospun SiO2-Cellulose Acetate Nanofiber Composite by Electrospinning

SiO2-cellulose acetate nanofiber has been synthesized by electrospinning process in high humidity environment. SiO2-cellulose acetate nanofiber with average diameter 598 nm has smooth morphology after confirming by SEM. Structure of nanofiber was analyzed by ATR-FTIR. Vibration band peak at around 1020 cm-1 and 1747 cm-1 showed C-O and C=O group of cellulose acetate, respectively. Peak at 3448 cm-1 related to OH group of cellulose acetate. Peak at 460 cm−1 for Si-O-Si bending and at 808 cm-1 for stretching of the Si-O-Si. SiO2 in nanofiber influenced of wetting property of nanofiber. Spreading time of water droplet on cellulose acetate nanofiber was 37 second. Water droplet on SiO2-cellulose acetate nanofiber was stable for several minutes. SiO2-cellulose acetate nanofiber has potential application for lithium ion battery separator.