ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(29), P. 38620 - 38630
Published: July 10, 2024
Polymers
are
often
used
as
adhesives
to
improve
the
mechanical
properties
of
flexible
electromagnetic
interference
(EMI)
shielding
layered
films,
but
introduction
these
insulating
inevitably
reduces
EMI
performance.
Herein,
ultrafine
aramid
nanofibers
(UANF)
with
a
diameter
only
2.44
nm
were
binder
effectively
infiltrate
and
minimize
gaps
in
MXene
for
balancing
properties.
Combining
evaporation-induced
scalable
assembly
assisted
by
blade
coating,
large-scale
MXene/UANF
films
highly
aligned
compact
stacking
successfully
fabricated.
Compared
conventional
ANF
larger
7.05
nm,
UANF-reinforced
film
exhibits
"brick-mortar"
structure
higher
orientation
compacter
nanosheets,
thus
showing
properties,
electrical
conductivity,
By
optimizing
content,
can
achieve
optimal
tensile
strength
156.9
MPa,
toughness
2.9
MJ
m
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
35(2)
Published: Aug. 29, 2024
Abstract
Underwater
adhesion
of
hydrogels
is
essential
for
their
applications
in
liquid
environment.
However,
green
raw
materials,
facile
preparation
process
and
multiple
environmental
adaptability
are
still
issues
that
need
to
be
improved.
Inspired
by
the
protein‐based
underwater
bio‐adhesion
phenomena
nature,
an
effective
stepwise
immersion
method
developed
without
any
polymerization
prepare
a
adhesive
hydrogel
combining
gelatin
tannic
acid
(TA),
two
common
materials
from
nature
yet
difficult
obtain
homogenous
compound.
By
treatments
urea
solution
or
heating,
can
realize
stable
immediate
on
various
substrates
different
liquids
addition
water
with
wide
range
adjustable
strength
10
0
–10
3
kPa.
The
evolution
network
structure
mechanism
systematically
studied.
Furthermore,
several
typical
portable
products
based
demonstrated
show
commercialization
possibility.
This
work
presented
novel,
facile,
distinctive
strategy
designing
environmentally
friendly,
adaptive
adhesives.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 5, 2025
Abstract
Addressing
the
diverse
environmental
demands
for
electronic
material
performance,
design
of
a
multifunctional
ionic
conductive
hydrogel
with
mechanical
flexibility,
anti‐freezing
capability,
and
antibacterial
characteristics
represents
an
optimal
solution.
Leveraging
Dead
Sea
effect
strong
hydrogen
bonding,
this
study
exploits
CaCl
2
abundant
hydroxyl
groups
in
phytic
acid
(PA)
to
induce
chain
entanglements,
thereby
constructing
complex,
multi‐crosslinked
network.
Furthermore,
PA
ternary
solvent
systems
(CaCl
/Glycerol/H
O)
synergistically
impart
excellent
strength,
toughness
(with
tensile
strength
8.93
MPa,
elongation
at
break
859.93%,
39.92
MJ
m
−3
),
high
electrical
conductivity,
antifreeze
properties,
strain
sensitivity
(gauge
factor
up
2.10)
hydrogels.
Remarkably,
structure
maintains
stability
even
after
undergoing
6000
loading‐unloading
cycles,
demonstrating
its
outstanding
fatigue
resistance.
Upon
receiving
external
stimuli,
exhibits
response
time
126
ms,
making
it
ideal
dynamic
monitoring
human
motion
signals.
This
offers
novel
insight
into
potential
application
hydrogels
as
flexible
sensors
challenging
environments.
