TY - GEN
T1 - Thermo-responsive polymer grafted aluminum surface to actively modulate water wettability
AU - Zhang, Feini
AU - Lai, Shuqi
AU - Jacobi, Anthony M.
AU - Braun, Paul V.
N1 - Publisher Copyright:
© Copyright 2015 by ASME.
PY - 2015
Y1 - 2015
N2 - Thermo-responsive wettability is studied for adaptive surface, which can potentially help to enhance the performance of thermal devices under various operation conditions. Poly(N-isopropylacrylamide) or PNIPAAm polymer brush can be grafted onto solid surfaces so that at temperatures below the lower critical solution temperature (LCST), the surface is hydrophilic, while at temperatures above LCST, it automatically becomes more hydrophobic. In this study, PNIPAAm is grafted on to aluminum alloy 6061, which is a multipurpose alloy commonly used in thermal mechanical systems. It is demonstrated by water static contact angle experiment at varies temperature that, the surface is hydrophobic at temperatures above LCST, and hydrophilic below LCST. The results are compared with bare aluminum surface at similar temperatures. Grafting PNIPAAm polymer brush on roughened aluminum surface would result in the ability to automatically switch between superhydrophobic state and superhydrophilic state in response to temperature change.
AB - Thermo-responsive wettability is studied for adaptive surface, which can potentially help to enhance the performance of thermal devices under various operation conditions. Poly(N-isopropylacrylamide) or PNIPAAm polymer brush can be grafted onto solid surfaces so that at temperatures below the lower critical solution temperature (LCST), the surface is hydrophilic, while at temperatures above LCST, it automatically becomes more hydrophobic. In this study, PNIPAAm is grafted on to aluminum alloy 6061, which is a multipurpose alloy commonly used in thermal mechanical systems. It is demonstrated by water static contact angle experiment at varies temperature that, the surface is hydrophobic at temperatures above LCST, and hydrophilic below LCST. The results are compared with bare aluminum surface at similar temperatures. Grafting PNIPAAm polymer brush on roughened aluminum surface would result in the ability to automatically switch between superhydrophobic state and superhydrophilic state in response to temperature change.
UR - http://www.scopus.com/inward/record.url?scp=84966507739&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84966507739&partnerID=8YFLogxK
U2 - 10.1115/SMASIS2015-9067
DO - 10.1115/SMASIS2015-9067
M3 - Conference contribution
AN - SCOPUS:84966507739
T3 - ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2015
BT - Development and Characterization of Multifunctional Materials; Mechanics and Behavior of Active Materials; Modeling, Simulation and Control of Adaptive Systems
PB - American Society of Mechanical Engineers
T2 - ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2015
Y2 - 21 September 2015 through 23 September 2015
ER -