Journal of Composites Science,
Journal Year:
2024,
Volume and Issue:
8(10), P. 394 - 394
Published: Oct. 1, 2024
In
this
work,
natural
fibers
extracted
from
the
medicinal
aromatic
plant
Deverra
tortuosa,
with
different
sizes
(S1
=
2
mm
and
S2
500
μm),
were
incorporated
into
recycled
low
density
polyethylene
(rLDPE)
to
produce
sustainable
biocomposites.
Compounding
was
performed
fiber
concentrations
(0
30%
wt.)
via
twin-screw
extrusion
followed
by
injection
molding.
Based
on
samples
obtained,
a
comprehensive
series
of
characterization
conducted,
encompassing
morphological
mechanical
(flexural,
tensile,
hardness,
impact)
properties.
Additionally,
thermal
properties
assessed
differential
scanning
calorimetry
(DSC),
while
Fourier
transform
infrared
spectroscopy
(FTIR)
used
elucidate
potential
chemical
interactions
changes
processing.
Across
range
conditions
investigated,
substantial
improvements
observed
in
rLDPE
properties,
particular
for
tensile
modulus
(23%
S1
104%
S2),
flexural
(47%
61%
strength
(31%
65%
S2).
Nevertheless,
decreased
(15%
46%
S2)
due
poor
fiber–matrix
interfacial
adhesion.
These
preliminary
results
can
be
further
development
packaging
materials.
Polymers,
Journal Year:
2025,
Volume and Issue:
17(5), P. 603 - 603
Published: Feb. 24, 2025
Plastics,
particularly
synthetic
organic
polymers,
have
become
indispensable
in
modern
life,
yet
their
large-scale
production
has
led
to
significant
environmental
challenges
due
persistent
waste.
Traditional
mechanical
recycling
methods
proven
insufficient
addressing
these
issues.
This
review
explores
recent
advancements
polymer
recycling,
focusing
on
chemical
and
biological
processes,
such
as
pyrolysis,
depolymerization,
enzyme-based
degradation,
which
offer
more
efficient
sustainable
alternatives.
Within
the
framework
of
a
circular
economy,
also
examines
strategies
like
closed-loop
plastic
economies.
These
developments
represent
critical
steps
toward
creating
practices.
The
final
chapter
includes
Quarterly
Report
2024
plastics,
providing
an
up-to-date
overview
current
state
its
trends.
Macromolecules,
Journal Year:
2024,
Volume and Issue:
57(7), P. 3407 - 3415
Published: April 1, 2024
Functionalization
of
polyethylene
toward
high-performance
polymers
with
good
thermal
and
mechanical
properties
is
a
persistent
challenge.
Closo-carboranes,
polyhedral
nanocage
structure,
provide
excellent
chemical
stability.
In
this
work,
main-chain
carborane-embedded
prepared
by
the
ring-opening
metathesis
copolymerization
cyclic
o-carborane
olefin
cyclooctene,
followed
backbone
hydrogenation.
The
mimics
could
offer
superior
to
high-density
(HDPE)
adjusting
incorporation
ratio
while
still
maintaining
moderate
crystalline
properties.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(11), P. 1515 - 1515
Published: May 27, 2024
Worldwide,
environmental
groups
and
policymakers
are
focusing
on
waste
recycling
to
create
economic
value
the
decomposition
of
by
leveraging
scarce
resources.
This
work,
therefore,
explores
thermal
enhanced
biodegradable
polymer
matrices
made
from
a
mixture
discarded
Phoenix
dactylifera
L./high-density
polyethylene
(PD/HDPE)
using
machine
learning
analysis
experimental
data.
The
results
these
samples
were
obtained
via
thermogravimetric
(TGA)
under
an
oxidation–free
environment,
with
heating
rates
10,
20,
40
°C·min−1
degradation
temperature
range
25
600
°C.
TGA
analyses
revealed
continued
dependence
actual
percentage
weight
loss
materials
as
test
function
temperature,
shifting
thermograms
maxima
consistent
increasing
rates.
Although
high-density
(HDPE)
found
be
thermally
more
stable
than
L.
(PD)
materials,
PD/HDPE
composite
contained
significant
amount
residual
ash.
Using
deep
neural
network
approach
for
this
process,
significantly
improved
algorithms
have
been
developed,
which
reduces
overall
cost
(residual
error)
almost
zero
(0.025)
after
just
over
million
iterations
(epochs)
provides
predictions
that
overlap
(R2~1).
Learning
algorithms,
along
optimized
synaptic
weights
biases,
employed
predict
behaviour
PD
based
conducted
at
higher
temperatures,
typically
ranging
between
1000
Predicted
data
completely
overlapped
experiments
(R2~1)
temperatures
near
unity
correlation
if
until
residue
was
attained.
With
approach,
it
is
possible
optimize
characteristics
HDPE
greater
efficiency,
need
multiple
design
experimentation.
Journal of Thermoplastic Composite Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 1, 2025
This
study
investigates
the
milling
behavior
of
wood-plastic
composites
(WPCs)
made
from
recycled
polypropylene
(RPP)
reinforced
with
waste
cotton
fabric
and
pine
sawdust.
The
effects
spindle
speed
(600
rpm,
400
200
rpm),
feed
rate
(0.2
mm/rev,
0.4
0.6
mm/rev),
depth
cut
(2.5
mm,
3.0
3.5
mm)
on
key
response
variables—material
removal
(MRR),
surface
roughness
(Ra),
machining
forces
(Fm),
delamination
factor
(Fd)—were
analyzed.
ANOVA
Signal-to-Noise
Ratio
methods
were
used
to
evaluate
significance
parameters,
while
multi-response
optimization
was
conducted
using
Surface
Response
Optimization
Technique.
results
showed
that
significantly
influenced
roughness,
primarily
affected
MRR
forces.
optimal
parameters—600
rpm
speed,
0.2
mm/rev
rate,
mm
cut—achieved
an
23.45
3
/min,
Ra
0.13
µm,
Fm
13.66
N,
Fd
1.08.
findings
underscore
importance
parameter
for
enhancing
efficiency
quality
demonstrating
potential
these
WPCs
as
sustainable
eco-friendly
materials
various
applications,
particularly
in
construction
industry.
