TY - JOUR
T1 - Hydrophobin as a nanolayer primer that enables the fluorinated coating of poorly reactive polymer surfaces
AU - Gazzera, Lara
AU - Corti, Claudio
AU - Lisa, Pirrie
AU - Paananen, Arja
AU - Monfredini, Alessandro
AU - Cavallo, Gabriella
AU - Bettini, Simona
AU - Giancane, Gabriele
AU - Valli, Ludovico
AU - Linder, Markus B.
AU - Resnati, Giuseppe
AU - Milani, Roberto
AU - Metrangolo, Pierangelo
N1 - LIS: IF not available
Project code: 100495
Project code: 101066
Project code: 101912
PY - 2015
Y1 - 2015
N2 - A new and simple method is presented to fluorinate the
surfaces of poorly reactive hydrophobic polymers in a
more environmentally friendly way using the protein
hydrophobin (HFBII) as a nanosized primer layer. In
particular, HFBII, via electrostatic interactions,
enables the otherwise inefficient binding of a
phosphate-terminated perfluoropolyether onto polystyrene,
polypropylene, and low-density polyethylene surfaces. The
binding between HFBII and the perfluoropolyether depends
significantly on the environmental pH, reaching the
maximum stability at pH 4. Upon treatment, the polymeric
surfaces mostly retain their hydrophobic character but
also acquire remarkable oil repellency, which is not
observed in the absence of the protein primer. The
functionalization proceeds rapidly and spontaneously at
room temperature in aqueous solutions without requiring
energy-intensive procedures, such as plasma or
irradiation treatments.
AB - A new and simple method is presented to fluorinate the
surfaces of poorly reactive hydrophobic polymers in a
more environmentally friendly way using the protein
hydrophobin (HFBII) as a nanosized primer layer. In
particular, HFBII, via electrostatic interactions,
enables the otherwise inefficient binding of a
phosphate-terminated perfluoropolyether onto polystyrene,
polypropylene, and low-density polyethylene surfaces. The
binding between HFBII and the perfluoropolyether depends
significantly on the environmental pH, reaching the
maximum stability at pH 4. Upon treatment, the polymeric
surfaces mostly retain their hydrophobic character but
also acquire remarkable oil repellency, which is not
observed in the absence of the protein primer. The
functionalization proceeds rapidly and spontaneously at
room temperature in aqueous solutions without requiring
energy-intensive procedures, such as plasma or
irradiation treatments.
KW - coating
KW - electrostatic interactions
KW - hydrophobin
KW - perfluorinated polymers
KW - self-assembly
U2 - 10.1002/admi.201500170
DO - 10.1002/admi.201500170
M3 - Article
SN - 2196-7350
VL - 2
JO - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
IS - 14
M1 - 1500170
ER -