Advanced Sustainable Systems,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 8, 2024
Abstract
Polymers
are
applied
extensively
in
the
healthcare
sector
and
enable
a
variety
of
different
applications.
In
addition
to
packaging
personal
protective
equipment,
large
number
medical
devices
also
coated
with
or
consist
polymers.
Today's
medicine
is
therefore
inconceivable
without
these
materials.
However,
huge
challenge
design
polymers
more
sustainable
find
new
possibilities
for
future
This
study
highlights
potential
ways,
how
particular
hospitals
can
be
utilized
circular
manner,
but
indicates
what
risks
challenges
this
entails.
npj Materials Sustainability,
Journal Year:
2024,
Volume and Issue:
2(1)
Published: Aug. 1, 2024
Abstract
Increasing
plastic
waste
is
a
critical
global
challenge
to
ecological
and
human
health
requiring
focused
solutions
reduce
omnipresent
pollution
in
the
environment.
While
recycling
has
been
touted
as
one
solution
counter
resource
utilization,
it
largely
ineffective
offsetting
impact
of
rising
production
more
than
400
million
metric
tonnes
annually,
due
low
rates
only
9%.
Over
three
decades
since
implementing
resin
codes,
favoured
thermoplastics,
neglecting
thermoset
plastics.
There
constant
need
enhance
overall
efficiency
by
exploring
advanced
methods,
enormous
gaps
exist
fully
unlocking
potential
recycling.
We
identify
associated
with
its
environmental
impacts.
discuss
substantial
progress
technology,
designs-for-recyclability
controlled
chemical
use,
economic
incentives
expand
markets
for
recycled
plastics
curb
leakage
into
Additionally,
we
highlight
some
emerging
strategies
legally
binding
international
policy
instruments,
such
Global
Plastics
Treaty
that
require
further
development
improve
recyclability.
ChemSusChem,
Journal Year:
2024,
Volume and Issue:
17(12)
Published: Feb. 20, 2024
Abstract
This
perspective
combines
various
expertise
to
develop
and
analyse
the
concept
of
technology
cascade
for
recycling
waste
plastics
with
goal
displacing
as
much
fossil
crude
oil
possible.
It
thereby
presents
archetype
technologies
their
strengths
weaknesses.
then
them
in
cascades
process
a
representative
plastic
mix,
determines
how
(fossil)
naphtha
could
be
displaced
at
which
energy
consumption.
The
rely
on
limited
number
parameters
that
are
fully
reported
supplementary
information
were
used
simple
transparent
spreadsheet
model.
calculated
results
bust
several
common
myths
recycling,
e.
g.
by
prioritizing
here
recycled
volume
over
efficiency,
circular
industry
products
.
unravels
cost
solvent‐based
processes,
shows
key
role
gasification
possibility
displace
up
70
%
feedstock
carbon,
rate
compares
well
aluminium,
steel
or
paper.
suggests
deeper
displacement
would
require
exorbitant
amount
energy.
therefore
argues
need
complement
use
renewable
based
biomass,
defossilise
industry.
Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
472, P. 134375 - 134375
Published: April 21, 2024
Low-density
polyethylene
(LDPE),
extensively
employed
in
flexible
plastic
packaging,
often
undergoes
printing
with
inks.
However,
during
the
mechanical
recycling
of
post-consumer
waste,
these
inks
act
as
contaminants,
subsequently
compromising
quality
and
usability
recycled
material.
To
understand
better
exactly
which
ink
components
cause
effects,
this
study
comprehensively
assesses
thermal
behavior
three
organic
pigments
two
commonly
utilised
binders,
correlated
impact
on
LDPE-based
packaging.
In
regard,
focuses
four
pivotal
factors:
processability,
properties,
aesthetic
attributes,
volatile
compound
profiles.
The
results
indicate
that
nitrocellulose,
used
a
binder,
degrades
reprocessing,
resulting
film
discoloration
emission
potentially
odorous
compounds.
Conversely,
are
found
to
be
dispersed
within
droplets
polyurethane
binder
LDPE
recyclates,
whilst
reprocessing
printed
samples
detrimentally
affects
notably
dart
drop
resistance,
strain
at
break,
number
inclusions.
Additionally,
it
is
shown
both
comprise
emit
compounds
reprocessing:
non-thermally
stable
components,
nitrocellulose
pigment
yellow
PY13,
well
low-molecular
weight
molecules
from
by-products
wax,
plasticisers,
additives.
growing
emphasis
circularity
has
highlighted
concerns
about
recycling,
particularly
concerning
potential
accumulation
contaminations
over
multiple
loops.
While
serve
valuable
purpose
use
phase
product,
after
not
only
blended
into
but
may
also
undergo
degradation.
These
crucial
factor
for
low-quality
recyclates
higher
loads,
posing
significant
toxicity
safety
concerns.
Results
reveal
need
address
(precursors
of)
hazardous
contamination
intensified
efforts
Journal of Material Cycles and Waste Management,
Journal Year:
2024,
Volume and Issue:
26(2), P. 961 - 969
Published: Jan. 5, 2024
Abstract
The
push
for
increasing
the
recycling
of
plastics
is
intensifying,
and
growing
use
composites
creates
a
need
to
increase
recyclability
polymer
at
their
end-of-life.
As
opposed
thermal
chemical
techniques,
by
dissolution
has
benefit
enabling
recovery
both
fibre
matrix
from
thermoplastic
without
altering
composition.
In
this
study,
suspensions
polypropylene
glass
fibres
varying
concentrations
were
obtained
upon
in
xylene
heated
130
°C.
Subsequent
filtration
enabled
separation
clean
fractions.
structures
fractions
identified
Fourier
transformed
infrared
spectroscopy
as
pure
fibres.
recovered
contained
1
wt%
organic
material
sizing,
pristine
showed
no
sign
remaining
Waste Management,
Journal Year:
2024,
Volume and Issue:
178, P. 135 - 143
Published: Feb. 23, 2024
Whether
plastic
packaging
waste
is
disposed
of
in
different
bins
(source
separation,
S)
or
a
single
bin
(post
source
P)
generally
assumed
to
impact
the
stream's
quality.
To
elucidate
this
question,
we
evaluated
quality
LDPE,
HDPE,
and
PP
from
both
separation
systems
(S
through
concise
analytical
strategy.
The
materials
received
similar
treatment
after
collection
(e.g.,
washing,
NIR-sorting).
A
multivariate
approach
ATR-FTIR
spectroscopy
was
developed
assess
their
material
composition
effect
washing.
Results
were
complemented
by
TGA,
DSC,
py-GC/MS
analysis.
performance
investigated
lab-scale
extrusion
granulation,
followed
an
assessment
mechanical
properties
melt
volume
rate.
Our
study
reveals
HDPE
be
good
quality,
regardless
source.
For
LDPE
PP,
P-materials
are
fractionally
more
contaminated
Both
PP-materials
display
poor
with
highly
fluctuating
elongations-at-break
(between
30%
380%).
S-LDPE
found
contain
polymeric
impurities
than
P-LDPE.
We
conclude
that
depends
strongly
on
type
(washing,
sorting).
FTIR
data
evaluation
propose
aims
at
simplifying
polyolefin
plastics
may
serve
as
basis
for
future
work
field.
ACS Organic & Inorganic Au,
Journal Year:
2024,
Volume and Issue:
4(4), P. 373 - 386
Published: May 7, 2024
In
order
to
prevent
the
current
unsustainable
waste
handling
of
enormous
volumes
end-of-use
organic
polymer
material
sent
landfilling
or
incineration,
extensive
research
efforts
have
been
devoted
toward
development
appropriate
solutions
for
recycling
commercial
thermoset
polymers.
The
inability
such
cross-linked
polymers
be
remelted
once
cured
implies
that
mechanical
processes
used
thermoplastic
materials
do
not
translate
Moreover,
structural
diversity
within
from
use
different
monomers
as
well
fabrication
fiber-reinforced
composites
make
these
highly
challenging.
this
Perspective,
depolymerization
strategies
are
discussed
with
an
emphasis
on
recent
advancements
our
group
recovering
building
blocks
polyurethane
(PU)
and
epoxy-based
materials.
While
two
represent
largest
groups
respect
production
volumes,
landscapes
classes
vastly
different.
For
PU,
increased
collaboration
between
academia
industry
has
resulted
in
major
solvolysis,
acidolysis,
aminolysis,
split-phase
glycolysis
polyol
recovery,
where
several
being
evaluated
further
scaling
studies.
materials,
molecular
skeleton
no
obvious
target
chemical
scission.
Nevertheless,
we
recently
demonstrated
possibility
disassembly
epoxy
bisphenol
A
(BPA)
recovery
through
catalytic
C–O
bond
cleavage.
Furthermore,
a
base
promoted
cleavage
developed
by
us
others
shows
tremendous
potential
BPA
Further
still
required
evaluating
suitability
monomer
at
industrial
scale.
Nonetheless,
illustrated
presented
chemistry
suggest
future
could
include
emphasize
energy
efficient
manner
closed-loop
recycling.
