Polymer Composites,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 31, 2024
Abstract
Although
many
studies
have
investigated
the
percolation
threshold
and
conductivity
in
polymer
carbon
black
(CB)
nanocomposites
(PCBs)
by
experimental
data,
modeling
this
field
is
a
topic
previously
overlooked
literature.
This
paper
suggests
simple
equation
for
PCBs
surface
properties
of
CB
well
as
interphase
depth
(
t
).
Also,
electrical
simulated
radius
R
),
tunneling
distance
λ
)
depth.
The
offered
model
validated
experimented
findings
numerous
samples
parametric
examinations.
A
thicker
higher
interfacial
tension
positively
reduce
onset.
smaller
CBs,
lower
threshold,
tunnels
enhance
PCBs.
low
0.01
obtained
(15
nm)
thick
(35
nm).
=
15
nm
35
maximize
PCB
to
6
S/m.
These
results
signify
important
roles
In
addition,
network
fraction
f
0.7
1
produce
uppermost
1.6
S/m,
but
system
insulated
at
less
than
0.35
or
more
2
nm.
Therefore,
high
are
needed
Highlights
An
onset
proposed
data
Smaller
onset,
conductivity.
significantly
manage
Heliyon,
Journal Year:
2025,
Volume and Issue:
11(1), P. e41621 - e41621
Published: Jan. 1, 2025
This
paper
explores
the
electrical
conductivity
interphase
of
Ag/Epoxy
composite
using
modified
McLachlan
theory
and
3D
finite
element
model
through
experimental
verification.
The
characteristic
presents
as
a
dynamic
function
influenced
by
particle
content,
properties,
properties
transition,
an
exponent.
was
meticulously
crafted,
considering
intricate
interplay
between
polymer
matrix
silver
particles,
tunnelling
distance
adjacent
regions
around
particles.
has
proven
its
mettle
rigorous
analysis
results
impact
various
parameters
on
conductivity.
predictions
have
shown
impressive
alignment
with
data,
highlighting
crucial
roles
played
in
composites
where
percolation
threshold
reached
6
vol
%
filler
loading.
study
demonstrated
that
3.84
×
10-1
S/cm
for
micro-sized
particles
1.32
10-2
nano-sized
Notably,
large
drastically
reduces
conductivity,
while
higher
slighter
surface
energies
enhance
Furthermore,
thin
yields
minimal
whereas
thick
low
waviness
improve
McLachlan-modified
falls
slightly
short
accuracy
compared
to
method
models.
Adjustments
equations
can
data.
Polymer Composites,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 2, 2025
Abstract
This
paper
introduces
a
groundbreaking
model
to
evaluate
the
conductivity
of
nanocomposites
comprising
MXene
nanosheets.
The
simulates
effective
considering
dimensions,
volume
fraction,
interphase
thickness,
percolation
threshold,
contact
distance,
and
tunneling
resistance.
model's
predictions
align
well
with
empirical
results
obtained
various
laboratory
samples.
scrutiny
elements
impacting
is
affirmed,
given
assumption
resistance
operation
MXene/interphase
network.
Slender
nanosheets
expansive
contacts
lead
an
elevated
level
conductivity.
Moreover,
shows
direct
correlation
loading,
while
higher
onset
produces
poorer
Based
on
outputs,
insulative
nanocomposite
identified
via
thinnest
(
<
1
nm),
thickest
t
>
4
smallest
fraction
0.01),
lowest
percentage
networked
0.05).
Contrariwise,
most
remarkable
as
25.6
S/m
attained
by
=
nm).
In
addition,
narrowest
tunnels
(tunneling
distance
nm)
yield
uppermost
6.2
in
system.
Highlights
study
proposes
for
polymer
nanocomposites.
size,
depth,
are
considered.
agree
experimental
data
several
A
bigger
area
thicker
interphase.
(1
produce
S/m.
Polymer Composites,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 9, 2025
Abstract
Many
papers
have
investigated
the
conductivity
of
nanocomposites
containing
a
perfect
interphase.
Herein,
an
imperfect
interphase
is
considered,
and
conduction
transference
from
graphene
to
medium
in
polymer
system
denoted
as
Y
expressed
by
efficient
dimensions
nanosheets.
Also,
real
inverse
aspect
ratio,
filler
portion,
percolation
threshold,
proportion
percolated
nets
are
suggested
.
Besides,
appropriate
model
for
nanocomposite
established,
assuming
mentioned
issues
contact
region
among
neighboring
The
novel
examined
various
tested
data.
In
addition,
characters
main
terms
explained.
calculations
developed
display
good
arrangement
with
data,
while
original
underestimates
conductivity.
Strong
large
interfacial/interphase
regions,
big
slim
nanosheets,
dense
harvest
high
nanocomposites.
Additionally,
great
extent
small
ratio
increase
efficiency
which
results
highest
obtained
thinnest
nanosheets
thickest
interphase,
enhancing
Highlights
Conduction
thicknesses
graphene.
A
simple
proposed
nanocomposite's
transference.
agreements
data
samples.
strong
interface/interphase
produces
transfer.
amount
transferring
increases
Polymer Composites,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 15, 2025
Abstract
In
contrast
to
the
extensive
research
on
traditional
CNT‐based
nanocomposite,
exceptional
functional
behaviors
of
novel
MXene/polymer
nanocomposite
remain
be
explored.
particular,
both
interface
effects
and
microstructural
characteristics
serve
as
crucial
factors
in
determining
overall
electrical
thermal
behaviors.
this
research,
a
unified
micromechanics‐based
homogenization
model
is
formulated
for
predicting
effective
conductivity
nanocomposites.
A
multi‐scale
scheme
based
effective‐medium
approximation
established
connect
The
between
MXene
polymer
matrix,
including
tunneling
effect
Kapitza
effect,
are
responsible
excellent
electric
properties
illustrated
by
Simmon's
function
filler‐dependent
distance,
while
interpreted
resistance
at
MXene‐polymer
interface.
bottom‐to‐up
computational
procedure
from
nano
scale
macro
adopted
under
hierarchical
geometrical
setting.
predicted
nanocomposites
calibrated
experiment
over
wide
range
volume
fractions.
An
obvious
percolated
phenomenon
unraveled
revealed
increase
significantly
after
reaching
percolation
threshold.
high
aspect
ratio
possesses
positive
impacts
This
paper
can
provide
instructions
optimization
Highlights
developed
MXene‐based
functionalized
considered
Both
agree
with
experiment.
percolative
behavior
observed
