Polymer Composites,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 10, 2025
Abstract
L‐cysteine,
a
bio‐based
modifier
with
multiple
functional
groups
(thiol,
amino,
and
carboxyl),
holds
promise
for
polymer
modification.
However,
its
tendency
to
agglomerate
poor
solubility
in
nonpolar
polymers
limits
effectiveness.
In
this
study,
1,2‐polybutadiene
(1,2‐PB)
was
intercalated
within
MXene
layers
enhance
L‐cysteine
dispersibility.
The
intercalation
allowed
nanoscale
distribution
of
1,2‐PB
sheets,
while
interactions
between
MXene's
hydroxyl
L‐cysteine's
polar
promoted
uniform
dispersion
the
rubber
matrix.
Compared
physical
blending,
grafting
degree
is
higher,
thereby
more
effectively
restricting
movement
molecular
chains,
which
leads
an
increase
effective
damping
temperature
by
over
7°C.
Additionally,
due
ionic
groups,
resulting
composite
exhibits
favorable
dielectric
performance,
constant
increasing
from
2.5
3.2.
Experimental
results
demonstrate
that
synergistic
effect
improves
both
properties
composites.
This
study
presents
novel
approach
using
two‐dimensional
nanosheets
thiols
modifying
polybutadiene,
offering
potential
path
high‐performance
materials.
Highlights
In‐situ
polymerization
enhances
Grafting
increases
incorporation.
Well‐dispersed
reduces
aggregation,
enhancing
mechanical
strength.
Effective
rises
7°C
L‐cysteine.
Dielectric
composites
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 16, 2025
Abstract
The
unique
structure
of
carbon
nanotubes
(CNTs)
endows
them
with
exceptional
electrical
and
mechanical
properties,
along
a
high
surface
area,
making
highly
beneficial
for
use
as
flexible,
high‐performing
thermoelectric
materials.
As
result,
the
application
CNTs
in
field
has
become
increasingly
widespread.
Considering
rapid
advancements
this
field,
review
offers
timely
overview
most
recent
progress
on
CNT‐based
materials
devices
over
past
five
years.
This
begins
by
introducing
fundamental
concepts
mechanisms
Then
new
strategies
are
explored
to
enhance
their
performance,
focusing
doping
composites,
while
emphasizing
importance
CNT
stability
key
research
area.
Additionally,
latest
design
expanded
scenarios
flexible
wearable
CNTs‐based
summarized.
Finally,
current
challenges
addressed
future
directions
development
discussed.
Journal of Advanced Ceramics,
Год журнала:
2024,
Номер
13(8), С. 1119 - 1131
Опубликована: Июнь 5, 2024
Thermoelectric
(TE)
technologies
offer
a
promising
approach
to
directly
convert
skin
heat
into
electricity
for
wearable
electronics.
Recognizing
p-type
Sb2Te3
and
n-type
Bi2Te3
as
top-performing
materials
at
room
temperature,
their
rigid
inorganic
structure,
with
ultra-low
moisture
permeability,
poses
challenges
in
warm
humid
conditions,
fostering
bacterial
growth
potential
issues.
To
address
this,
we
developed
cross-linked
core-shell
structure
by
electrodepositing
(Bi2Te3)
onto
carbon
fiber
(CF).
This
architecture
significantly
improved
electrical
conductivity
the
Seebeck
coefficient,
resulting
remarkable
300-fold
increase
power
factor
compared
pure
CF.
The
CF/Sb2Te3
CF/Bi2Te3
films
demonstrated
optimal
factors
of
450
μW
m−1
K−2
121
K−2,
respectively.
Moreover,
fabricated
exhibited
outstanding
over
3000
g
m−2
day−1,
exceptional
electromagnetic
interference
shielding
efficiency
approaching
93
dB,
versatility
sensors
language
assistance
respiratory
monitoring.
These
attributes
underline
broad
applicability,
emphasizing
suitability
human
health
protection
diverse
scenarios.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 20, 2024
Abstract
Breathing
is
an
important
physiological
health
indicator
of
the
human
body.
Real
time
and
long‐term
monitoring
with
low
attenuation
respiratory
status
great
significance.
However,
working
performance
sensors
typically
placed
at
mouth
nose
body
greatly
affected
by
exhaled
moisture
small
pollutants.
Here,
all‐nanofiber
self‐powered
sensor
(ASRS)
a
multi‐layer
stacking
structure
developed
based
on
contact
electrification
or
triboelectrification
effect.
By
spraying
method
to
chemically
graft
surface
energy
octadecyltrichlorosilane
(OTS)
molecules
onto
nanofibers,
ASRS
endowed
excellent
superhydrophobicity
self‐cleaning
properties,
making
it
free
from
influence
high
humidity
particle
pollutants
in
gas.
Due
gradient
variation
interface
increasing
pressure,
exhibits
multi‐stage
linear
sensitivity
response
trend,
which
has
pressure
0.048
kPa
−1
.
In
addition,
further
integrated
smart
mask
for
real‐time
status,
including
age
gender
subjects,
physical
activity
sleep
apnea
syndrome.
This
work
provides
effective
sensing
strategy
daily
monitoring,
proactive
healthcare,
early
disease
warning.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 5, 2024
Abstract
Bimode
temperature‐pressure
sensors
hold
significant
promise
in
personal
health
monitoring,
wearables
and
robotic
signal
detection.
Traditional
bimode
typically
combine
two
independent
sensors,
leading
to
fabrication
complexity.
This
study
develops
a
sensor
by
using
facile
electrodeposition
method
create
sandwiched
BiSbTe/Carbon
Paper/BiSbTe
thin
films
stacking
them
vertical
structure.
It
demonstrates
high
sensitivity
for
temperature
sensing,
capable
of
detecting
difference
as
low
1
K,
rapid
response
time
0.92
s
due
Utilizing
its
thermoelectric
mechanism,
the
achieves
self‐powered
sensing
finger
touch
respiration
states.
Furthermore,
island‐like
contact
surface
ensures
with
an
extremely
fast
0.17
s,
rapidly
changing
resistance
under
pressure,
allowing
it
detect
various
human
behaviors,
including
body
movements
micro‐expressions.
Beyond
capabilities,
film
excels
flexibility,
electromagnetic
interference
shielding,
stability,
presenting
potential
integration
into
electronic
skin
systems
wearables,
artificial
intelligence,
other
applications.
