title: Cellulose Acetate-Poly(N-isopropylacrylamide)-Based Functional Surfaces with Temperature-Triggered Switchable Wettability.
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.affiliation: Division of Engineering Product Development, Singapore University of Technology and Design, Singapore, 487372.
authors.forename: V Anand
authors.initials: VA
authors.lastname: Ganesh
authors.affiliation: Division of Engineering Product Development, Singapore University of Technology and Design, Singapore, 487372.
authors.forename: Anupama Sargur
authors.initials: AS
authors.lastname: Ranganath
authors.affiliation: Department of Mechanical Engineering, Centre for Nanofibers and Nanotechnology, National University of Singapore, Singapore, 117575.|Cancer Science Institute of Singapore and Department of Pharmacy, National University of Singapore, Singapore, 117599.
authors.forename: Radhakrishnan
authors.initials: R
authors.lastname: Sridhar
authors.affiliation: Division of Engineering Product Development, Singapore University of Technology and Design, Singapore, 487372.
authors.forename: Hemant Kumar
authors.initials: HK
authors.lastname: Raut
authors.affiliation: Department of Mechanical Engineering, Centre for Nanofibers and Nanotechnology, National University of Singapore, Singapore, 117575.|Environmental and Water Technology Centre of Innovation, Ngee Ann Polytechnic, Singapore, 599489.
authors.forename: Sundaramurthy
authors.initials: S
authors.lastname: Jayaraman
authors.affiliation: Division of Engineering Product Development, Singapore University of Technology and Design, Singapore, 487372.
authors.forename: Rahul
authors.initials: R
authors.lastname: Sahay
authors.affiliation: Department of Mechanical Engineering, Centre for Nanofibers and Nanotechnology, National University of Singapore, Singapore, 117575.
authors.forename: Seeram
authors.initials: S
authors.lastname: Ramakrishna
authors.affiliation: Division of Engineering Product Development, Singapore University of Technology and Design, Singapore, 487372.
authors.forename: Avinash
authors.initials: A
authors.lastname: Baji
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D057139:Nanofibers / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature; D017155:Wettability
chemical_list: D000180:Acrylic Resins; C052970:poly-N-isopropylacrylamide; C005062:acetylcellulose; D002482:Cellulose
keywords: cellulose acetate; electrospinning; poly(N-isopropylacrylamide); switchable wettability; thermoresponsive