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Switchable Wettability of Thermo‐Responsive Biocompatible Nanofibrous Films Created by Electrospinning
Author(s) -
Gu ShuYing,
Wang ZhiMei,
Li JianBo,
Ren Jie
Publication year - 2010
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200900215
Subject(s) - electrospinning , materials science , wetting , superhydrophilicity , biocompatibility , composite number , nanofiber , composite material , contact angle , nanotechnology , chemical engineering , polymer , engineering , metallurgy
Thermo‐responsive PNIPAAm/PLLA nanofibrous films with tunable surface morphologies and better biocompatibility were prepared by electrospinning technique. The electrospun composite films possessed a “bead‐on‐string” structure. The wettability of nanofibrous films was observed by water CA measurements. The results showed that the electrospinning process and addition of PLLA did not change the thermo‐sensitivity of PNIPAAm. The wettability of electrospun PNIPAAm/PLLA composite films could switch from superhydrophilic to superhydrophobic when the temperature increased from 20 to 50 °C. Electrospinning is a promising way to create stimuli‐responsive surfaces with potential application in the design and tactics of controllable drug delivery system.