Small Methods,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 25, 2024
Abstract
Developing
superwetting
coatings
with
environmental
adaptability
is
critical
for
sustainable
industrial
applications.
However,
traditional
anti‐wetting
often
fall
short
due
to
their
susceptibility
factors
(UV
light,
temperature,
mold
growth,
and
abrasion)
inadequate
stain
resistance
in
complex
media.
Herein,
a
durable
ex
situ
pH‐responsive
coating
reversible
wettability
switching,
engineered
by
integrating
hydrophobic
polydimethylsiloxane
tertiary
amine
structures
presented.
The
resulting
hierarchical
micro‐nano
surface
structure,
combined
trapped
air
cushion,
ensures
low
water
adhesion
stable
superhydrophobicity.
Notably,
after
pH
treatment,
the
modulation
of
N
+
content
synergistically
interacts
chains,
enabling
controlled
transition
from
150°
68.5°,
which
can
spontaneously
revert
state
upon
heating
drying.
This
enhances
both
underwater
environments,
17.2%
increase
detergency
compared
superhydrophobic
controls.
Moreover,
demonstrates
remarkable
durability,
no
staining,
peeling,
or
mildew
growth
(grade
0)
even
1500
h
UV
radiation
28
days
testing.
work
offers
highly
adaptable
stain‐resistant
applications
building
infrastructure
protection,
as
well
smart
textiles
designed
multi‐media
decontamination.
Superhydrophobic
fabrics
suffer
from
being
commonly
penetrated
by
moisture
after
laundering,
seriously
deteriorating
their
water
repellency
air
drying.
Numerous
researchers
have
successfully
recovered
superhydrophobicity
drying
in
fluid
ovens;
however,
high
energy
consumption
and
equipment
dependence
limit
practical
applications.
Herein,
the
superhydrophobic
photothermal
self-healing
cotton
fabric
(SPS
fabric)
was
fabricated
depositing
a
composite
layer
of
cellulose
nanocrystal-MXene
(C-MXene)
polyacrylate
(PA)
coatings
on
cloth.
Superior
conversion
SPS
performance
enables
its
10.5-56.8
°C
greater
temperature
than
that
pure
hydrophobic
under
different
simulated
solar
light
intensities.
After
washing,
can
spontaneously
restore
with
≈100%
efficiency
30
mW·cm-2
irradiation;
contrast,
single
recover
only
≈71.2%.
Even
10
washing
cycles,
recovery
decreases
0.1%,
exhibiting
excellent
laundering
durability.
The
retain
ultralong
time
antifrosting
(2760
s)
antifreezing
(4080
capacities
due
to
sustainable
repellency.
Remarkably,
capability
is
attributed
fact
coiled
nonpolar
alkane
chains
be
restored
straight
state
autothermal
drive,
confirmed
through
element
analyses
molecular
dynamics
simulations.
