WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT,
Journal Year:
2024,
Volume and Issue:
20, P. 1067 - 1071
Published: Dec. 31, 2024
The
objective
of
this
study
is
to
assess
the
environmental
impacts
(EIs)
mixed
plastic
waste
(MPW).
According
results,
MPW
powder,
a
blend
polyethylene
(PE)
and
polypropylene
(PP),
significantly
reduces
climate
change
(CC)
when
compared
with
industry
standards.
Furthermore,
solar
photovoltaic
(PV)
technology
assessed
as
an
alternative
natural
gas
for
producing
MPW.
When
gas,
PV
effect
on
from
1.11
kg
CO2
eq
0.94
eq.
Therefore,
research
demonstrates
how
use
in
powder
production
can
reduce
emissions
by
integrating
renewable
energy
into
recycling
process.
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
919, P. 170469 - 170469
Published: Feb. 2, 2024
The
COVID-19
pandemic
created
an
unprecedented
demand
for
PPE,
with
single-use
face
masks
emerging
as
a
critical
tool
in
containing
virus
transmission.
However,
the
extensive
use
and
improper
disposal
of
these
masks,
predominantly
composed
non-biodegradable
plastics,
has
exacerbated
environmental
challenges.
This
research
presents
innovative
method
mechanically
upcycling
PPEs
used
medical
sectors
i.e.
single
masks.
study
investigates
facile
approach
reclamation
infection-free
pure
polypropylene
(PP)
plastic
from
discarded
(W-PP)
blends
it
various
vegetable
oil
percentages
(5,
10
20
%),
resulting
versatile
material
suitable
applications.
Melt
flow
index,
rheological
behaviour,
DSC
FTIR
were
employed
to
investigate
effect
oil/radical
initiator
through
chemical
grafting
on
W-PP
properties.
results
demonstrate
significant
enhancements
tensile
strength
modulus
when
blended
radical
initiator.
There
was
marked
increase
(33
%)
strain
(55
compared
untreated
W-PP,
rendering
both
robust
flexible.
Furthermore,
we
this
upcycled
fabrication
glass
fibre-reinforced
composites,
notable
impact
resistance.
demonstrates
excellent
potential
applications,
such
sheet
forming
3D
printing,
where
non-brittleness
plastics
plays
pivotal
role
manufacturing
high-quality
products.
cost-benefit
analysis
underscores
PPE
waste
sustainable
solution
mitigate
pollution
conserve
valuable
resources.
applications
span
wide
range
industries,
including
automotive
packaging,
printing.
Chemical Engineering Journal,
Journal Year:
2024,
Volume and Issue:
486, P. 150230 - 150230
Published: March 12, 2024
Polyolefin
waste
is
among
the
most
generated
yet
least
recycled.
Despite
its
potential
as
a
feedstock
of
superhydrophobic
membranes
for
organic
solvent
filtration,
it
remains
challenge
to
achieve
high
selectivity
and
permeability
viscous
oils.
In
this
study,
we
valorized
polyolefin
into
trimodal
water
filtration
through
acid-catalyzed
oxidation
void
inducer.
This
approach
enabled
creation
with
exceptional
wettability
strength,
characterized
by
combination
micropores,
macrovoids
(30–70
µm),
cavities
(150–200
µm).
The
introduced
oxygen
moieties
membrane
structure,
resulting
in
reduced
contact
angle,
improved
hydrophilicity,
increased
permeability.
micropores
facilitated
capillary
action,
efficient
passage,
acted
oil
reservoirs,
optimal
oil–water
separation.
Various
were
synthesized
using
low-density
high-density
polyethylene
(PE),
polypropylene
(PP),
their
blend.
obtained
results
compared
commercial
membranes,
revealing
flow
rate
43
ml/min,
retention
capacity
261
mg,
an
removal
efficiency
ranging
from
84–94
%.
Furthermore,
exhibited
recyclability,
demonstrating
stability
over
at
10
cycles.
hybrid
process
transforms
plastic
achieving
balance
between
superoleophilicity
hydrophilicity.
Microfiltration
membranes
derived
from
semi-crystalline
polymers
face
various
challenges
when
synthesized
through
the
extrusion–casting
technique,
including
use
of
large
quantities
polymer,
long
casting
times,
and
generation
substantial
waste.
This
study
focuses
on
synthesizing
these
using
spin-casting
followed
by
stretch-induced
pore
formation.
Recycled
high-density
polyethylene
(HDPE)
virgin
powder,
combined
with
a
calcium
carbonate
filler,
were
used
as
source
materials
for
membranes.
The
influence
polymer-filler
ratio
without
stretching
morphology,
tensile
strength,
water
flow
rate
was
investigated.
Optimal
conditions
determined,
emphasizing
balance
between
structure
mechanical
integrity.
permeable
membrane
possessed
mean
diameter
500
nm,
exhibited
strength
measuring
32
MPa,
allowed
to
at
19
ml/min,
had
contact
angle
126°.
These
effectively
eliminated
suspended
particles
water,
their
performance
evaluated
against
that
commercially
available
research
outlines
synthesis
route
microfiltration
tailored
plastic
forms,
utilizing
technique.
Frontiers in Soft Matter,
Journal Year:
2023,
Volume and Issue:
3
Published: Dec. 6, 2023
In
this
study,
we
blended
two
readily
available
polymers,
polydimethylsiloxane
(PDMS),
a
semi-crystalline
polymer,
and
polystyrene
(PS),
an
amorphous
both
having
widely
varying
physical
properties.
The
blend
is
then
spin
coated
to
form
thin
film.
We
investigated
the
effects
of
relative
polymer
concentration,
coating
speed,
environmental
factors,
such
as
temperature,
on
ultimate
morphologies
phase-separated
films.
It
was
found
that
it
possible
regulate
films
achieve
desirable
microstructures
spherical
droplets,
holes,
bi-continuous
lamellar
structures,
tubules
by
controlling
fabrication
conditions.
with
higher
PS
concentrations
were
shown
bilayer
system
upper
PS-rich
layer
due
thermodynamic
instability
film
caused
rapid
evaporation
solvent,
while
PDMS
exhibited
cohesive
forces
engendered
microtubule
formation
led
high
surface
roughness.
Polymers,
Journal Year:
2023,
Volume and Issue:
16(1), P. 135 - 135
Published: Dec. 31, 2023
Recycling
low-end,
one-time-use
plastics—such
as
low-density
polyethylene
(LDPE)—is
of
paramount
importance
to
combat
plastic
pollution
and
promote
sustainability
in
the
modern
green
economy.
This
study
valorizes
LDPE
waste
by
transforming
it
into
3D
oleophilic
swellable
thin
films
through
a
process
involving
dissolution,
phase
separation,
extraction.
These
are
subsequently
layered
using
customized
polypropylene
(PP)
based
nonwoven
fabric
separator
securely
sealed
zigzag
pattern.
The
zigzag-shaped
seal
enhances
adhesion
pollutants
sorbent
providing
wire
curvatures
that
increase
retention
time
uptake
capacity.
As
result,
exhibits
impressive
oil
capacities,
with
immediate
equilibrium
values
120
g/g
85
g/g,
respectively.
Notably,
as-prepared
demonstrates
low
water
high
selectivity
for
oil,
outperforming
commercially
available
sorbents.
unique
design
3D-film
structure,
superposed
films,
offers
sustainable
value-added
solution
issues
spills
on
surfaces.
Emergent Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 1, 2024
Abstract
Superhydrophobic
surfaces
and
coatings
have
gained
significant
attention
for
their
potential
in
anti-corrosion
applications,
yet
they
present
several
challenges.
These
typically
lack
the
flexibility
to
function
as
freestanding
films,
limiting
ease
of
application
removal.
Additionally,
existing
techniques
often
involve
complex
chemical
processes
utilize
materials
that
are
costly
environmentally
hazardous.
In
this
study,
waste
polyethylene
is
valorized
produce
flexible
superhydrophobic
films
with
anticorrosive
properties.
The
process
employs
thermally
induced
phase
separation
using
a
bio-solvent
spin-casting.
resulting
demonstrate
dual
functionality
both
films.
maximum
contact
angle
film
was
found
be
148
o
.
charge
transfer
resistances
R
ct
carbon
steel
polymer
coated
were
0.184
173
kΩ.cm
2
,
respectively.
electrochemical
impedance
spectrometry
(EIS)
shows
corrosion
inhibition
efficiency
99.39%,
which
confirms
superior
properties
coating.
Importantly,
use
offers
cost-effective
friendly
solution
conventional
coatings,
contributing
circular
economy
reducing
plastic
waste.
Overall,
study
presents
an
alternate
strategy
develop
providing
template
utilizing
protection
applications.
Graphical
Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
480, P. 136349 - 136349
Published: Oct. 30, 2024
Pelletizing
mixed
plastic
wastes
(MPW)
has
gained
interest
as
an
upcycling
technology
and
alternative
to
conventional
recycling.
To
investigate
its
potential,
we
conducted
a
cost
analysis
life-cycle
assessment
(LCA)
for
conceptual
pelletization
facility
designed
produce
1
kg
of
pellets
per
batch
MPW
(comprising
polyethylene-PE
polypropylene-PP).
This
work
the
following
merits:
(i)
evaluating
environmental
impact
(EI),
analysis,
mechanical
strength
based
on
actual
experimental
data
comparison
with
local
international
manufacturers;
(ii)
enabling
evaluation
LCA
impacts
pellets;
(iii)
emphasizing
significance
waste
management
in
reducing
EIs.
The
ten
EIs
were
assessed:
climate
change
(CC),
net
energy,
particulate
matter
formation,
natural
land
transformation,
metal
depletion,
marine
ecotoxicity,
ionising
radiation,
freshwater
eutrophication,
terrestrial
ecotoxicity.
CC
as-synthesized
is
1.26
CO
