Journal of Polymer Engineering,
Journal Year:
2024,
Volume and Issue:
44(9), P. 659 - 678
Published: Aug. 22, 2024
Abstract
The
flexibility
and
sensitivity
of
traditional
sensors
is
hard
to
achieve
unless
wearable
technology
develops.
Flexible
piezoresistive
sensor
(FPS)
one
the
solutions
in
nondestructive
health
monitoring
living
body.
In
application
sensing
devices
for
physiological
or
biochemical
signals,
fast
feedback
speed
accurate
signal
are
essential
requirements
obtaining
sensitive
response
signals.
Additionally,
development
FPS
has
promoted
research
conductive
materials
that
could
be
used
devices.
However,
improving
performance
functional
an
important
way
effort
researchers.
Recently,
MXene
as
a
new
kind
2D
their
composites
have
made
tremendous
impact
field
sensors.
Numerous
based
expedite
practical
by
overcoming
present
limitations
such
poor
responsivity,
accuracy,
narrower
corresponding
range.
There
been
plenty
breakthrough
MXene-based
past
several
years.
main
purpose
this
paper
reviewing
recent
providing
outlook
on
future
it.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 8, 2024
Abstract
The
development
of
nanomaterials
is
crucial
to
upgrading
modern
industry.
MXene
nanosheets
have
attracted
significant
attention
due
their
superb
resistance
permeation,
diverse
surface
chemical
properties,
impressive
mechanical
and
metal‐like
electrical
thermal
conductivity,
etc.,
providing
unique
advantages
in
various
technical
fields.
When
are
combined
with
polymers
form
functional
coatings,
applications
span
multiple
fields,
including
anticorrosion,
wear
resistance,
flame‐retardancy,
electromagnetic
interference
(EMI)
shielding,
de‐icing.
This
review,
conjunction
MXene's
barrier
property,
lubricity,
stability,
photothermal
conversion
discusses
detail
the
MXene‐based
polymer
coatings.
Additionally,
it
examines
dispersion
interaction
within
coatings
role
functionalized
polymers.
Finally,
based
on
current
research
status
emerging
needs,
challenges
future
opportunities
a
targeted
manner
discussed.
review
aims
summarize
existing
results
put
forward
an
objective
fair
point
view,
constructive
reference
for
nanofunctional
Polymer,
Journal Year:
2024,
Volume and Issue:
303, P. 127120 - 127120
Published: May 1, 2024
A
piezoresistive
flexible
strain
sensor
was
developed
using
thermoplastic
polyurethane
elastomers
(TPU)
as
the
matrix
and
carbon
nanotubes
(CNTs)
conductive
fillers.
Sensitivity,
range,
tensile
cycling
stability
were
concurrently
considered
during
its
design.
Electrospun
TPU
fiber
membranes
prepared
via
electrospinning
in
this
experiment,
with
controllable
diameter
achieved
by
adjusting
rotational
speed
of
receiving
drum.
CNTs
incorporated
into
a
polymer
substrate
through
suction
filtration
to
create
sensor.
The
support
structure
electrospun
film
served
carrier
for
uniformly
adhering
particles.
Well-dispersed
could
more
easily
achieve
uniform
loading
pore
size
film,
thereby
forming
layer.
This
study
initially
determined
influence
content
spinning
solution
on
morphology
membrane.
Subsequently,
effects
CNT
drum
microstructure
investigated,
along
their
impact
microstructure,
mechanical
properties,
sensing
performance
CNTs/TPU
(CT)
sensors.
results
indicate
that
membrane
under
conditions
mass
fraction
20
wt%
100
r/min
has
larger
average
stable
scaffold
structure.
sensor,
filtering
10
mL
concentration
2
mg/mL,
exhibited
best
strength
elongation
at
break
6.22
MPa
575%,
respectively.
Additionally,
it
demonstrated
high
sensitivity
(GF=420.17
200%
strain)
excellent
durability
(300
cycle
tests),
enabling
quick
accurate
responses
movements
various
parts
human
body,
meeting
basic
usage
requirements
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(4), P. 2906 - 2916
Published: Jan. 22, 2024
Hydrogels
are
emerging
as
stretchable
electromagnetic
interference
(EMI)
shielding
materials
because
of
their
tissue-like
mechanical
properties
and
water-rich
porous
cellular
structures.
However,
achieving
high-performance
hydrogel
shields
remains
a
challenge
enhancing
conductivity
often
results
in
compromise
deformation
adoptability.
This
work
proposes
treatment
strategy
involving
sulfuric
acid/titanium
carbide
MXene,
which
can
simultaneously
enhance
the
stretchability
poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)
(PEDOT:PSS)/poly(vinyl
alcohol)
(PVA)
double-network
hydrogels.
Multiple
spectroscopic
characterizations
reveal
that
acid
promotes
linear
conformation
transition
PEDOT
molecular
chain,
while
MXene
increases
charge
delocalization
hydrogen
bond
cross-linking
sites.
The
hydrogels,
synthesized
with
combined
content
0.6
wt
%
PEDOT:PSS,
exhibit
an
average
X-band
EMI
SE
41
dB.
performance
is
sustained
at
94.5%,
even
following
stretching
release
strain
200%.
Interestingly,
found
to
linearly
increase,
reaching
value
99
dB
frequency
increased
26.5
GHz.
increase
attributed
enhanced
water
polarization
process,
supported
by
theoretical
calculations
impedance
attenuation
constant.
introduces
post-treatment
technique
optimizes
providing
deep
insights
into
mechanism
enabling
ultralow
conductive
filler
content.
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(44), P. 51774 - 51784
Published: Oct. 27, 2023
Development
of
conductive
hydrogels
with
high
sensitivity
and
excellent
mechanical
properties
remains
a
challenge
for
constructing
flexible
sensor
devices.
Herein,
universal
strategy
is
presented
enhancing
the
strength
Mxene-based
double-network
through
metal
ion
coordination
effects.
Polyacrylamide
(PAM)/sodium
alginate
(SA)/Mxene
(PSM-DN)
were
prepared
by
impregnation
PAM/SA/Mxene
(PSM)
hydrogels.
High
electrical
conductivity
achieved
due
to
MXene
nanosheets,
while
strong
bond
between
ions
SA
constructs
second
network
that
increases
hydrogel
an
order
magnitude.
Mechanical
tests
demonstrated
elastic
modulus
matches
human
tissues.
Hence,
they
can
be
used
as
highly
sensitive
electronic
skin
recognize
movement
different
joints
in
humans
also
pressure
sensing
interface
characters
anticounterfeiting
information
transfer.
This
work
promote
practical
application
high-tech
fields,
such
interaction.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(24)
Published: April 10, 2024
Abstract
Designing
nanocomposite
hydrogels
with
oriented
nanosheets
has
emerged
as
a
promising
toolkit
to
achieve
preferential
performances
that
go
beyond
their
disordered
counterparts.
Although
current
fabrication
strategies
via
electric/magnetic
force
fields
have
made
remarkable
achievements,
they
necessitate
special
properties
of
and
suffer
from
an
inferior
orientation
degree
nanosheets.
Herein,
facile
universal
approach
is
discovered
elaborate
MXene‐based
highly
oriented,
heterogeneous
architecture
by
virtue
supergravity
replace
conventional
fields.
The
key
such
leverage
bidirectional,
force‐tunable
attributes
containing
coupled
orthogonal
shear
centrifugal
field
for
steering
high‐efficient
movement,
pre‐orientation,
stacking
MXene
in
the
bottom.
Such
synergetic
effect
allows
yielding
high‐orientation
MXene‐rich
layer
(orientation
degree,
f
=
0.83)
polymer‐rich
layer.
authors
demonstrate
high‐orientation,
deliver
extraordinary
electromagnetic
interference
shielding
effectiveness
55.2
dB
at
12.4
GHz
yet
using
super‐low
0.3
wt%,
surpassing
most
hydrogels‐based
materials.
This
versatile
supergravity‐steered
strategy
can
be
further
extended
arbitrary
including
MoS
2
,
GO,
C
3
N
4
offering
paradigm
development
nanocomposites.
