Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(23), P. 11464 - 11464
Published: Dec. 9, 2024
This
paper
presents
a
comparative
analysis
of
fiber
aspect
ratios
using
scanning
electron
microscopy
(SEM)
and
the
mean
field
homogenization
approach.
The
novelty
this
work
lies
in
an
effective
length
evaluation
based
on
makes
it
possible
to
use
microscope
image
samples
corresponding
sample
size
microtomography.
Molded
pellets
four
polyamide-6
short-glass
fiber-reinforced
composites
with
mass
fractions
15%,
30%,
50%
were
considered.
ratio
distribution
measured
by
SEM
for
investigated
materials
was
20.25
coefficient
variation
5.1%.
obtained
theory
tensile
curve
approximation
underestimated
at
13.698
5.2%.
deviation
between
micro-
macro-estimates
can
be
represented
as
68%
8.5%.
developed
technology
preparing
automated
processing
used
study
other
short-reinforced
polymer
composite
materials.
estimates
serve
useful
reference
when
calibrating
models
short-fiber-reinforced
Journal of Natural Fibers,
Journal Year:
2024,
Volume and Issue:
21(1)
Published: Sept. 2, 2024
To
develop
efficient,
durable,
and
eco-friendly
natural
fiber
composites,
this
study
examines
the
physical
properties
of
Strelitzia
Juncea
(SJ)
for
potential
industrial
use.
The
focus
is
on
how
gauge
length
affects
mechanical
SJ
fibers,
aiming
to
manufacture
textile
yarns.
Tensile
tests
were
performed
yarns
varying
diameters
(0.95,
1.26,
1.76
mm).
In
addition,
150
fibers
across
five-gauge
lengths
(GL)
from
10
50
mm
gave
a
strength
731
270
MPa
Young's
modulus
28
31
GPa,
with
statistical
analysis
applied
evaluate
data's
variability.
Statistical
techniques
assess
quantify
dispersion.
Results
analyzed
using
Weibull
distributions
different
probability
indices,
along
least
squares
(LS)
maximum
likelihood
(ML)
estimation
techniques.
Furthermore,
each
tensile
characteristic,
one-factor
variance
(ANOVA)
was
five
groups.
Polymer Composites,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 17, 2025
Abstract
In
order
to
accomplish
an
effective
valorization
of
biochar
derived
from
pine
needle
waste
(PNW)
as
a
potential
filler
develop
green
composites
based
on
polypropylene
bottle
flakes
(wPP)
explored
through
twin
screw
extruder
and
injection
molding.
A
comprehensive
analysis
the
composites,
including
mechanical,
thermal,
rheological,
morphological
were
characterized
investigated.
The
best
mechanical
performance
wPP/biochar
composite
was
obtained
at
40
wt%
content
tensile
modulus
substantially
enhanced
by
97.30%,
flexural
141.92%,
strength
54.60%
compressive
28.85%
while
elongation
break
reduced
10.18%
79.83%
with
respect
wPP.
Thermogravimetric
(TGA)
showed
that
adding
thermal
stability
wPP/biochar.
Differential
scanning
calorimetry
(DSC)
revealed
increases
crystallinity
wPP
matrix
10
highest
(66.72%)
achieved.
Scanning
electron
microscopy
(SEM)
images
suggested
interlocking
structure
between
matrix.
complex
viscosity,
storage
modulus,
viscous
are
incorporating
biochar.
Modified
Cole–Cole
plot
van‐Gurp
restriction
polymer
chain
mobility
in
presence
Highlights
Reutilization
needles
plastic
promotes
circular
economy.
Biochar
gasification
process
improved
properties
composite.
composites.
SEM
reveals
infiltration
pores.
Journal of Composites Science,
Journal Year:
2025,
Volume and Issue:
9(3), P. 124 - 124
Published: March 6, 2025
The
global
push
for
sustainable
materials
has
intensified
the
research
on
natural
fiber-reinforced
composites.
This
study
investigates
potential
of
sugarcane
bagasse
fibers,
combined
with
a
bio-based
epoxy
matrix,
as
alternative
high-performance
A
comprehensive
approach
was
adopted,
including
wear
testing,
thermal
and
structural
characterization,
machine
learning
predictive
modeling.
Ethylene
dichloride-treated
fibers
exhibited
lowest
rate
(0.245
mg/m)
highest
stability
(T20%
=
260
°C,
char
yield
1.3
mg),
highlighting
role
optimized
surface
modifications.
XRD
(X-ray
diffraction)
analysis
revealed
that
pre-treated
achieved
crystallinity
index
62%,
underscoring
importance
alignment
in
fiber-matrix
bonding.
Machine
insights
using
Random
Forest
model
identified
fiber
treatment
most
significant
parameter
influencing
performance,
accurate
predictions
validated
through
experimental
results.
work
demonstrates
transformative
polymer
composites,
offering
pathway
environmentally
friendly,
lightweight,
durable
material
solutions.
These
findings
integrate
rigor
computational
insights,
paving
way
advancements
fiber-based
composite
technologies.
