Cellulose Acetate-Poly( N -isopropylacrylamide)-Based Functional Surfaces with Temperature-Triggered Switchable Wettability Academic Article uri icon

abstract

  • Temperature-triggered switchable nanofibrous membranes are successfully fabricated from a mixture of cellulose acetate (CA) and poly(N-isopropylacrylamide) (PNIPAM) by employing a single-step direct electrospinning process. These hybrid CA-PNIPAM membranes demonstrate the ability to switch between two wetting states viz. superhydrophilic to highly hydrophobic states upon increasing the temperature. At room temperature (23 °C) CA-PNIPAM nanofibrous membranes exhibit superhydrophilicity, while at elevated temperature (40 °C) the membranes demonstrate hydrophobicity with a static water contact angle greater than 130°. Furthermore, the results here demonstrate that the degree of hydrophobicity of the membranes can be controlled by adjusting the ratio of PNIPAM in the CA-PNIPAM mixture.

authors

  • Ganesh, V Anand
  • Ranganath, Anupama Sargur
  • Sridhar, Radhakrishnan
  • Raut, Hemant Kumar
  • Jayaraman, Sundaramurthy
  • Sahay, Rahul
  • Ramakrishna, Seeram
  • Baji, Avinash

publication date

  • 2015