Soft Matter,
Год журнала:
2023,
Номер
19(29), С. 5560 - 5574
Опубликована: Янв. 1, 2023
We
have
developed
a
simple
and
effective
method
to
prepare
stable
wettability
gradients
on
an
elastomeric
soft
substrate,
polydimethylsiloxane
(PDMS).
In
our
method,
partially
cured
PDMS
film
composed
of
definite
ratio
elastomer
crosslinking
agent
was
heated
over
hot
surface
with
temperature
gradient.
This
causes
differential
thermal
curing
the
water
contact
angle
(wettability)
resultant
showed
gradual
variation
across
length.
allows
us
design
fabricate
rationally
controlled
directionality
shapes
(e.g.,
linear
radial
gradients).
The
stability
studied
chemical
treatment
enhance
at
room
temperature.
Stable
prepared
through
this
can
find
applications
as
reliable
platforms
scaffolds
offering
or
directional
wetting
adhesion.
demonstrated
practical
in
collection,
crystallization
materials,
cell
adhesion
HeLa
cells,
osteoblasts
NIH/3T3
cells.
multi-functional
characteristics
these
wettable
are
expected
be
handy
other
domains
using
materials
interfaces
also.
ACS Applied Polymer Materials,
Год журнала:
2023,
Номер
5(9), С. 7666 - 7674
Опубликована: Авг. 17, 2023
Intelligent
materials
with
switchable
wettability
in
response
to
external
stimuli
are
highly
desirable
for
sustainable
water
harvest
from
a
humid
atmosphere.
Herein
we
present
the
design
of
photothermal-responsive
material
intelligent
moisture
capture
and
release
based
on
marrying
thermal-responsive
poly(N-isopropylacrylamide)
(PNIPAM)
reduced
graphene
oxide
(RGO)
excellent
photothermal
property.
The
as-designed
RGO/PNIPAM
could
make
itself
as
heat
source
through
efficiently
converting
sunlight
into
heat,
driving
change
PNIPAM
hydrophilic
hydrophobic.
Consequently,
achieves
its
chains
below
low
critical
solution
temperature
(LCST)
(<32
°C)
complete
under
illumination
switching
hydrophilicity
hydrophobicity
PNIPAM.
This
behavior
matches
nicely
nature
typical
day-and-night
dry
coastal
areas,
lighting
up
practical
prospect
Moreover,
is
reversible,
which
endows
it
good
recyclability
(e.g.,
>10
cycles).
study
interesting
because
provides
paradigm
harvest,
may
shed
light
application
other
high-performance
stimuli-responsive
materials.
Soft Matter,
Год журнала:
2023,
Номер
19(29), С. 5560 - 5574
Опубликована: Янв. 1, 2023
We
have
developed
a
simple
and
effective
method
to
prepare
stable
wettability
gradients
on
an
elastomeric
soft
substrate,
polydimethylsiloxane
(PDMS).
In
our
method,
partially
cured
PDMS
film
composed
of
definite
ratio
elastomer
crosslinking
agent
was
heated
over
hot
surface
with
temperature
gradient.
This
causes
differential
thermal
curing
the
water
contact
angle
(wettability)
resultant
showed
gradual
variation
across
length.
allows
us
design
fabricate
rationally
controlled
directionality
shapes
(e.g.,
linear
radial
gradients).
The
stability
studied
chemical
treatment
enhance
at
room
temperature.
Stable
prepared
through
this
can
find
applications
as
reliable
platforms
scaffolds
offering
or
directional
wetting
adhesion.
demonstrated
practical
in
collection,
crystallization
materials,
cell
adhesion
HeLa
cells,
osteoblasts
NIH/3T3
cells.
multi-functional
characteristics
these
wettable
are
expected
be
handy
other
domains
using
materials
interfaces
also.
