Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 24, 2025
Abstract
Hetero‐structured
thermally
conductive
fillers,
benefiting
from
the
low
interfacial
thermal
resistance
and
fillers’
synergistic
effect,
have
been
proven
to
be
ideal
choice
for
improving
conductivities
of
polymer
composites.
However,
hetero‐structured
fillers
are
usually
disorderly
distributed
in
matrix,
hindering
further
improvement
efficiency
constructing
conduction
pathways
This
work
proposes
a
new
strategy
graft
polymethyl
methacrylate
molecular
brushes
on
surfaces
fluorinated
graphene@carbon
nanotube
(FG@CNT)
by
atom
transfer
radical
polymerization.
FG@CNT
is
orderly
arranged
presents
liquid
crystalline
state
(LC‐(FG@CNT),
which
then
introduced
into
polyimide
(LC‐PI)
matrix
with
high
intrinsic
conductivity
fabricate
LC‐(FG@CNT)/LC‐PI
composite
films.
The
in‐plane
through‐plane
(
λ
∥
,
⊥
)
15
wt.%
films
reach
5.66
0.76
W·m
−1
·K
respectively,
168.2%
137.5%
higher
than
those
LC‐PI
=
2.11
0.32
),
also
significantly
FG@CNT/LC‐PI
4.72
0.74
).
Demonstrated
heat
dissipation
testing
finite
element
simulation,
show
excellent
management
capabilities
great
application
potential
generation
flexible
electronic
devices.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 4, 2024
Abstract
Electromagnetic
interference
(EMI)
shielding
materials
with
low
electromagnetic
(EM)
waves
reflection
characteristics
are
ideal
for
blocking
EM
radiation
and
pollution.
Materials
reflectivity
must
be
constructed
using
excellent
absorption
properties.
However,
simultaneously
possessing
both
EMI
performance
remain
scarce,
consequently,
multilayer
structures
need
to
developed.
Poly(p‐phenylene–2,6–benzobisoxazole)
nanofibers
(PNF)
prepared
by
deprotonation.
PNF
combined
MXene
heterostructure
MXene@Ni
in‐situ
growth;
MXene@Ni/PNF
acts
as
an
layer
while
MXene/PNF
reflective
layer.
Finally,
(MXene@Ni/PNF)–(MXene/PNF)
aerogels
layer‐by‐layer
freeze‐drying
based
on
the
layered
modular
design
concept.
Experimental
characterizations
revealed
that
enable
efficient
absorption‐reflection‐reabsorption
of
waves,
effectively
eliminating
EMI.
When
mass
ratio
Ni
in
is
1:6
fraction
80
wt.%,
exhibit
(71
dB)
a
very
coefficient
(R
=
0.10).
Finite
element
simulations
verified
developed
asymmetric
structural
achieve
high
characteristics.
In
addition,
display
infrared
camouflage
ability.
Achieving
dual
functionalities
of
hydrophobicity
and
excellent
microwave
transmission
in
a
single
material
remains
significant
challenge,
especially
for
advanced
applications
aerospace,
telecommunications,
navigation
engineering.
Inspired
by
natural
designs
like
chestnut
burrs,
bioinspired
polyaniline
(PANI)
particles
with
tunable
micro-/nanostructures
through
facile
template-free
polymerization
process
have
been
developed.
By
regulating
the
polarity
reaction
system,
temperature,
time,
various
hierarchical
structures,
including
cross-linked
nanosheets,
burr-like
spheres,
starburst
flower-like
are
synthesized.
The
spiny
projections
surface
roughness
endow
unique
structure,
achieving
superior
properties.
formation
structures
is
driven
intermolecular
interactions
during
nucleation
growth
processes.
presence
both
hydrophobic
hydrophilic
domains
within
PANI
leads
to
coexistence
large
water
contact
angles
up
152°
high
energy.
optimized
structure
minimizes
charge
carrier
mobility,
dipole
relaxation,
dielectric
loss.
A
efficiency
96%
achieved
these
combined
factors.
disclosing
relationship
between
wettability,
properties,
design
protocol
bionic
regulation
established
achieve
superhydrophobic
microwave-transparent
functions.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
Flexible
strain
sensors
are
broadly
investigated
in
electronic
skins
and
human-machine
interaction
due
to
their
light
weight,
high
sensitivity,
wide
sensing
range.
Hydrogels
with
unique
three-dimensional
network
structures
widely
used
flexible
for
exceptional
flexibility
adaptability
mechanical
deformation.
However,
hydrogels
often
suffer
from
damage,
hardening,
collapse
under
harsh
conditions,
such
as
extreme
temperatures
humidity
levels,
which
lead
sensor
performance
degradation
or
even
failure.
In
addition,
the
failure
mechanism
environments
remains
unclear.
this
review,
of
hydrogel
various
conditions
examined.
Subsequently,
strategies
towards
environmental
tolerance
summarized.
Finally,
current
challenges
discussed,
along
potential
directions
future
development
applications.
