Energy & Environment,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 10, 2024
The
demand
for
engineering
plastics,
such
as
polyoxymethylene
(POM),
used
in
the
electronics
and
automotive
industries
is
increasing
rapidly.
It
becoming
increasingly
important
to
reduce
adverse
effects
of
waste
plastics
on
environment
ecosystem
achieve
goals
circular
economy.
Pyrolysis,
gasification,
hydrothermal
conversion,
solvolysis,
electrochemical
depolymerization
have
been
widely
studied
chemical
methods
manage
plastic
waste.
Chemical
recycling
a
representative
effective
approach
recover
monomers
or
syngas
from
This
paper
reviews
properties
POM
waste,
various
reaction
mechanisms
options
with
major
studies.
In
addition,
economic
feasibility
discussed.
Finally,
opportunities
future
challenges
regarding
are
suggested.
Polymer-Plastics Technology and Materials,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 40
Published: Nov. 1, 2024
One
of
the
polymers
with
biggest
production
volume
is
poly(vinyl
chloride)
(PVC)
considering
their
versatility,
durability,
lightweight,
as
well
low
cost
production,
plastics
have
recently
become
an
essential
part
everyone's
daily
life.
However,
increased
and
usage
poses
significant
environmental
problems
because
incomplete
utilization,
a
lengthy
biodegradation
period,
detrimental
effects
on
living
things.
This
study
examines
latest
findings
in
PVC
research,
including
its
properties,
polymerization,
modification,
recycling,
diverse
applications.
It
has
been
proposed
that
during
along
application
both
inorganic
organic
thermal
stabilizers,
can
mitigate
some
basic
limiting
characteristics
PVC.
chemistry
extended
by
vast
continuous
study,
mainly
chemical
transformations
this
polymeric
material.
describes
modification
using
different
materials
active
modifying
agent.
The
latter
included
substitutions,
modifications,
nucleophilic
radicals,
removal
or
dehydrochlorination,
grafting
polymerizations.
PVC's
consequences
are
examined,
overview
functionalization
provided
article,
discussion
main
reactivity
trends
lens
recycling.
Green Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
This
article
presents
a
novel
strategy
for
co-pyrolyzing
biomass
and
plastic
waste
to
produce
advanced
carbon
materials.
It
systematically
evaluates
the
reaction
mechanisms,
process
dynamics,
environmental
benefits,
sustainable
Chemical
upcycling
of
plastic
wastes
into
valuable
chemical
feedstocks
and
simultaneous
mitigation
environmental
deterioration
are
fascinating
but
remain
extremely
challenging.
Herein,
we
report
microwave-assisted
valorization
carbon
nanotubes
(CNTs)
hydrogen
(H2)
over
heterojunction-structured
mixed
metal
oxides.
Specifically,
the
CoNiFe-based
layered
triple
oxides
(LTO)
arrayed
on
Ni-foam
(CoNiFe-LTO@foam)
were
constructed.
The
special
heterojunction
LTO
endows
high
dielectric
loss,
facilitating
efficient
conversion
absorbed
microwave
energy
thermal
energy.
Most
importantly,
synergistic
effect
multiple
transition
sites
boosts
cleavage
chains
dehydrogenation,
thereby
accelerating
reaction
kinetics.
As
a
result,
CoNiFe-LTO@foam
achieves
an
H2
selectivity
∼95
vol
%
with
yield
∼69
mmol·gplastic-1
for
polyethylene
in
25
cycles
measurement.
Simultaneously,
CNTs
attain
∼35%,
which
can
be
used
aqueous
chloride-ion
batteries.
Additionally,
enables
facile
recovery
prevents
loss
catalytic
sites,
various
real-world
wastes.
Our
work
thus
highlights
innovations
advanced
system
forming
closed
loop
C/H
achieving
ultimate
goal
carbon-neutral
society.
