Title :
Fabrication and morphological control of electrospun ethyl cellulose nanofibers
Author :
Xiang Wang ; Guangqi He ; Haiyan Liu ; Gaofeng Zheng ; Daoheng Sun
Author_Institution :
Dept. of Mech. & Electr. Eng., Xiamen Univ., Xiamen, China
Abstract :
Ethyl cellulous (EC) fibrous films were fabricated via electrospinning from solutions with various DMF/acetone volume ratios and the hydrophobic properties were investigated. The morphology of electrospun EC films reveals a conversion from beads to uniform nanofibers by decreasing the DMF/acetone ratio. Pure DMF solution leads to bead structures while uniform nanofibers can be obtained from DMF/acetone ratio of 2/3. The fibrous surfaces of electrospun EC films greatly improve their hydrophobicity with the average water contact angles range from 138° to 151°, exceeding that of spin-coating film (59°). The highest contact angle (151°) was found on the bead-on-string films prepared from the solution with DMF/acetone ratio of 4/1. For this hydrophobic capacity, the electrospun EC films would broaden their applications in the fields of coating and encapsulation.
Keywords :
contact angle; electrospinning; hydrophobicity; nanofabrication; nanofibres; organic compounds; thin films; DMF-acetone volume ratios; average water contact angles; bead structures; bead-on-string films; coating; electrospinning; electrospun EC film morphology; electrospun ethyl cellulose nanofibers; encapsulation; ethyl cellulous fibrous films; fibrous surfaces; hydrophobic capacity; hydrophobic properties; hydrophobicity; morphological control; pure DMF solution; uniform nanofibers; Coatings; Films; Morphology; Rough surfaces; Solvents; Surface morphology; Surface treatment; Cellulose; Electrospinning; Hydrophobic; Nanofiber;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2013 8th IEEE International Conference on
Conference_Location :
Suzhou
Electronic_ISBN :
978-1-4673-6351-8
DOI :
10.1109/NEMS.2013.6559742
