Intelligent dual-responsive cellulose surfaces via surface-initiated ATRP.
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.
Lindqvist
Josefina
J
Department of Fibre and Polymer Technology, Royal Institute of Technology, KTH School of Chemical Science and Engineering, Stockholm, Sweden.
Nyström
Daniel
D
Ostmark
Emma
E
Antoni
Per
P
Carlmark
Anna
A
Johansson
Mats
M
Hult
Anders
A
Malmström
Eva
E
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
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