The Macromolecular Transition of Kapok Fiber by RF Plasma Treatment Investigated by SAXS/WAXD Studies and Their Correlation With Electrical Properties of the Fiber‐Reinforced Composites
Journal of Applied Polymer Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 25, 2025
ABSTRACT
The
macromolecular
structure
of
untreated
and
RF
plasma‐treated
kapok
fiber
(KF)
was
investigated
employing
small‐angle
x‐ray
scattering
(SAXS)
wide‐angle
diffraction
(WAXD).
Subsequently,
the
structural
transition
KF
correlated
with
dielectric
properties
their
reinforced
epoxy
polymer
composites.
WAXD
patterns
resemble
Iβ
cellulose.
crystallinity
index
(CI)
crystallite
size
(CS)
values
are
found
to
increase
from
48.8%
3.0
nm
55.6%
3.6
nm,
respectively,
after
plasma
treatment
on
at
a
power
30
W
for
min.
one‐dimensional
three‐dimensional
correlation
functions
calculated
background‐corrected
smeared‐out
SAXS
intensity
data.
theories
developed
by
Vonk
Ruland
were
used
estimate
different
parameters
functions,
considering
has
non‐ideal
two‐phase
structure.
maximum
value
CI,
CS
minimum
transversal
length
in
void
phase
()
volume
fraction
obtained
treated
Consequently,
composites
exhibit
low
constant
(12)
loss
(0.5),
enhancing
suitability
use
printed
circuit
boards.
Language: Английский
Flexural and Free Vibration Analysis of Glass and Natural Fiber-Based Hybrid Laminated Composites: Experimental and Numerical Insights
Fibers and Polymers,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 17, 2025
Language: Английский
Cold plasma‐mediated kapok fiber/epoxy composites for printed circuit board applications
Polymer Composites,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 12, 2025
Abstract
This
study
investigates
the
structural,
mechanical,
viscoelastic,
dielectric
and
impedance
properties
of
raw
RF
plasma‐treated
kapok
fiber/epoxy
composites
for
printed
circuit
board
(PCB)
applications,
with
a
focus
on
fiber‐matrix
interface
characteristics.
Kapok
fiber
(KF),
known
its
lightweight,
was
used
as
reinforcement
in
epoxy‐based
polymer
composites,
plasma
treatment
KF
employed
to
enhance
interfacial
adhesion
composite
performance.
The
flexural
strength
(
F
s
),
tensile
T
impact
I
)
storage
modulus
E
′)
increased
by
168%,
121%,
151%
104%
respectively,
after
KF.
Further,
analysis
demonstrated
reducing
electrical
losses
enhancing
insulation
KF/epoxy
studies
highlighting
role
crystalline
amorphous
content
AC
conductivity.
Also,
water
absorption
percentage
decreased
from
8.1%
4.0%
investigation
confirms
that
30‐Watt
30‐min
exhibit
superior
compared
due
KF,
making
them
viable
candidates
high‐strength
eco‐friendly
PCBs
electronic
applications.
Highlights
Plasm
enhanced
interfacial,
chemical,
mechanical
bonding.
Glass
transition
temperature
28°C.
Electrical
4.0%.
Language: Английский
A comprehensive study on fuel property, pyrolysis kinetic and product characteristic of torrefied biomass for high-value utilization
Industrial Crops and Products,
Journal Year:
2025,
Volume and Issue:
230, P. 121052 - 121052
Published: April 25, 2025
Language: Английский
Silane‐treated kapok fiber/epoxy composites for aerospace cabin interiors: Synthesis and characterization
Polymer Composites,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 6, 2024
Abstract
This
study
underscores
the
potential
of
silanized
kapok
fiber
(KF)
as
a
lightweight,
eco‐friendly
reinforcement
for
aerospace
cabin
interiors,
emphasizing
electrical
insulation
and
mechanical
resilience.
KF/epoxy
composites
were
fabricated
via
hand
lay‐up,
silane
treatment
improved
flexural,
tensile,
impact,
storage
modulus
by
131%,
101%,
145%,
105%,
respectively,
due
to
enhanced
fiber‐matrix
interaction.
Dielectric
impedance
spectroscopy
revealed
reduced
dielectric
constant,
loss,
AC
conductivity
removal
polar
groups
compact
composite
structure.
Additionally,
9%
concentration
decreased
water
absorption
3.9%
over
400
h
tight
packing
binding
between
epoxy.
These
findings
demonstrate
that
enhances
compatibility,
improving
overall
performance
composites.
Highlights
KFs
are
treated
with
coupling
agents.
Silane
interfacial,
chemical
bonding.
Mechanical
properties
grafting
on
KF.
T
g
increased
after
treatment.
Explored
density
demonstrated
Language: Английский
Multiwalled carbon nanotubes filled pineapple/kenaf hybrid laminated composites structures for electromagnetic interface shielding applications
Polymer Composites,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 26, 2024
Abstract
The
main
objective
of
the
present
research
is
to
investigate
mechanical
and
electrical
properties
multiwalled
carbon
nanotube
(MWCNTs)
filled
pineapple
kenaf
fiber‐based
hybrid
laminated
composite
structures
using
hand
layup
technique.
0,
0.1,
0.2,
0.3,
0.4,
0.5
wt%.
MWCNTs
are
incorporated
into
proposed
structures.
incorporation
structure
increases
flexural,
tensile
impact
strength
by
173%,
53%,
29%
respectively.
morphological
studies
presented
understand
fiber
pull‐out,
matrix
breakage,
delamination
debonding
phenomena.
Further,
addition
composites
decreased
water
absorption
from
8.3%
4.3%;
however,
density
increased
slightly
due
a
more
compact
structure.
enhances
such
as
dielectric
constant
AC
conductivity
forming
conductive
network.
developed
3.0
6.8
times
interfacial
polarization.
results
study
demonstrate
that
incorporating
MWCNTS
helped
enhance
both
properties,
making
it
primary
choice
for
electromagnetic
interface
shielding
applications.
Highlights
Laminated
fabricated
,
56%,
29%.
percentage
4.3%.
3.04
times.
Language: Английский