Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(28), С. 19449 - 19459
Опубликована: Июль 2, 2024
Mechanical
recycling
is
one
of
the
simplest
and
most
economical
strategies
to
address
ever-increasing
plastic
pollution,
but
it
cannot
be
applied
immiscible
mixed
plastics
suffers
from
property
deterioration
after
each
cycle.
By
combining
amphiphilic
block
copolymer
strategy
reactive
compatibilization
strategy,
we
designed
a
series
stapler
for
compatibilizing/upcycling
plastics.
First,
various
functionalized
graft
copolymers
were
accessed
via
different
synthetic
routes.
Subsequently,
addition
very
small
amount
molecules
induced
synergistic
effect
with
that
improved
compatibility
mechanical
properties
These
highly
effective
binary/ternary
systems
can
directly
postconsumer
waste
plastics,
which
increase
toughness
by
162
times.
Most
importantly,
also
effectively
impact
resistance,
adhesion
performance,
three-dimensional
(3D)
printing
performance
permitted
blends
20
times
minimal
degradation
in
their
properties.
The Innovation,
Год журнала:
2024,
Номер
5(2), С. 100586 - 100586
Опубликована: Фев. 3, 2024
The
chemical
recycling
of
polyolefin
presents
a
considerable
challenge,
especially
as
upcycling
methods
struggle
with
the
reality
that
plastic
wastes
typically
consist
mixtures
polyethylene
(PE),
polystyrene
(PS),
and
polypropylene
(PP).
We
report
catalytic
aerobic
oxidative
approach
for
polyolefins
corresponding
carboxylic
acids
product.
This
method
encompasses
three
key
innovations.
First,
it
operates
under
atmospheric
pressure
mild
conditions,
using
O
Abstract
Polystyrene
is
a
staple
plastic
in
the
packaging
and
insulation
market.
Despite
its
good
recyclability,
willingness
of
PS
recycling
remains
low,
largely
due
to
high
cost
limited
profitability.
This
review
examines
research
progresses,
gaps,
challenges
areas
that
affect
costs,
including
but
not
logistics,
design,
policymaking.
We
critically
evaluate
recent
developments
upcycling
strategies,
we
particularly
focus
on
tandem
hydrogen‐atom
transfer
(HAT)
strategies.
conclude
future
studies
should
only
reaction
chemistry
mechanisms
also
economic
viability
processes.
The
goal
this
stimulate
development
innovative
strategies
with
low
costs
output
values.
hope
technological
momentum
towards
sustainable
circular
economy.
Giant,
Год журнала:
2024,
Номер
19, С. 100307 - 100307
Опубликована: Июнь 14, 2024
Polyolefins
are
the
most
produced
and
widely
used
polymeric
materials.
However,
chemically
inert
nature
of
polyolefins
has
led
to
severe
environmental
pollution,
posing
a
threat
human
sustenance
development.
Managing
recycling
polyolefin
plastic
waste
is
crucial
for
transition
from
linear
sustainable
circular
economy.
Catalytic
chemical
includes
traditional
techniques
like
pyrolysis
photolysis,
innovative
methods
that
introduce
cleavable
bonds
into
chain
closed-loop
recycling.
post-functionalization
post-consumer
materials
another
strategy
tackle
waste,
aiming
upgrade
materials'
utility
contribute
sustainability.
Overall,
developing
catalytic
deconstructing
upcycling
plastics
essential
encourage
better
reclamation
practices
reduce
impact
waste.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(28), С. 19449 - 19459
Опубликована: Июль 2, 2024
Mechanical
recycling
is
one
of
the
simplest
and
most
economical
strategies
to
address
ever-increasing
plastic
pollution,
but
it
cannot
be
applied
immiscible
mixed
plastics
suffers
from
property
deterioration
after
each
cycle.
By
combining
amphiphilic
block
copolymer
strategy
reactive
compatibilization
strategy,
we
designed
a
series
stapler
for
compatibilizing/upcycling
plastics.
First,
various
functionalized
graft
copolymers
were
accessed
via
different
synthetic
routes.
Subsequently,
addition
very
small
amount
molecules
induced
synergistic
effect
with
that
improved
compatibility
mechanical
properties
These
highly
effective
binary/ternary
systems
can
directly
postconsumer
waste
plastics,
which
increase
toughness
by
162
times.
Most
importantly,
also
effectively
impact
resistance,
adhesion
performance,
three-dimensional
(3D)
printing
performance
permitted
blends
20
times
minimal
degradation
in
their
properties.
