TY - JOUR
T1 - Ordering pH-Responsive Polyelectrolyte-Grafted Nanoparticles in a Flow Coating Process
AU - Zhang, Chongfeng
AU - Carlson, Thomas
AU - Yang, Siyang
AU - Akcora, Pinar
N1 - Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/3/9
Y1 - 2018/3/9
N2 - The effects of nanoscale particle interactions on deposition patterns in the flow coating process are investigated using pH-responsive poly(acrylic acid) (PAA)-grafted silica nanoparticles. Interactions between nanoparticles are effectively controlled by grafting densities, PAA brush lengths, and pH, in addition to hydrogen bonding between free polyvinylpyrrolidone (PVP) and PAA. Consequently, various intriguing patterns of randomly distributed dots, polygonal networks, meshes, fork-like structures along with highly regulated and densely packed stripes parallel to the moving direction of substrates are fabricated. Per se, the flow coating process is shown to form regulated patterns during evaporation by controlling particle–particle interactions with inherent brush properties and external pH.
AB - The effects of nanoscale particle interactions on deposition patterns in the flow coating process are investigated using pH-responsive poly(acrylic acid) (PAA)-grafted silica nanoparticles. Interactions between nanoparticles are effectively controlled by grafting densities, PAA brush lengths, and pH, in addition to hydrogen bonding between free polyvinylpyrrolidone (PVP) and PAA. Consequently, various intriguing patterns of randomly distributed dots, polygonal networks, meshes, fork-like structures along with highly regulated and densely packed stripes parallel to the moving direction of substrates are fabricated. Per se, the flow coating process is shown to form regulated patterns during evaporation by controlling particle–particle interactions with inherent brush properties and external pH.
KW - flow coating
KW - grafted nanoparticles
KW - pH-responsive polyelectrolyte
KW - particle–particle interactions
KW - self-assembly
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U2 - 10.1002/admi.201701318
DO - 10.1002/admi.201701318
M3 - Article
AN - SCOPUS:85040225952
VL - 5
JO - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
IS - 5
M1 - 1701318
ER -