title: Intelligent dual-responsive cellulose surfaces via surface-initiated ATRP.
abstract: Novel thermo-responsive cellulose (filter paper) surfaces of N-isopropylacrylamide (NIPAAm) and pH-responsive cellulose surfaces of 4-vinylpyridine (4VP) have been achieved via surface-initiated ATRP. Dual-responsive (pH and temperature) cellulose surfaces were also obtained through the synthesis of block-copolymer brushes of PNIPAAm and P4VP. With changes in pH and temperature, these "intelligent" surfaces showed a reversible response to both individual triggers, as indicated by the changes in wettability from highly hydrophilic to highly hydrophobic observed by water contact angle measurements. Adjusting the composition of the grafted block-copolymer brushes allowed for further tuning of the wettability of these "intelligent" cellulose surfaces.
authors.affiliation: Department of Fibre and Polymer Technology, Royal Institute of Technology, KTH School of Chemical Science and Engineering, Stockholm, Sweden.
authors.forename: Josefina
authors.initials: J
authors.lastname: Lindqvist
authors.forename: Daniel
authors.initials: D
authors.lastname: Nyström
authors.forename: Emma
authors.initials: E
authors.lastname: Ostmark
authors.forename: Per
authors.initials: P
authors.lastname: Antoni
authors.forename: Anna
authors.initials: A
authors.lastname: Carlmark
authors.forename: Mats
authors.initials: M
authors.lastname: Johansson
authors.forename: Anders
authors.initials: A
authors.lastname: Hult
authors.forename: Eva
authors.initials: E
authors.lastname: Malmström
mesh_terms: D000178:Acrylamides / Q000737:chemistry; D000180:Acrylic Resins / Q000737:chemistry; D001672:Biocompatible Materials / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D003300:Copper / Q000737:chemistry; D005374:Filtration; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D011108:Polymers / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry; D013055:Spectrophotometry, Infrared; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013696:Temperature; D017155:Wettability
chemical_list: D000178:Acrylamides; D000180:Acrylic Resins; D001672:Biocompatible Materials; D011108:Polymers; D011725:Pyridines; C006903:carbopol 940; D003300:Copper; D002482:Cellulose; C067295:N-isopropylacrylamide; C029351:4-vinylpyridine