Polymers,
Год журнала:
2025,
Номер
17(4), С. 535 - 535
Опубликована: Фев. 19, 2025
Due
to
excellent
chemical
resistance
and
impermeability,
high-density
polyethylene
(HDPE)
is
widely
used
in
petrochemical
transportation,
product
packaging,
sports
equipment,
marine
applications.
Yet,
with
the
wide
variety
of
service
environments,
its
mechanical
thermal
properties
do
not
meet
demand.
In
present
study,
a
compounding
cross-linker
comprising
di-tert-butyl
peroxide
(DTBP)
triallyl
isocyanurate
(TAIC)
employed
by
combining
two-step
preparation
process.
High-quality
cross-linking
reactions
are
achieved
for
HDPE.
this
DTBP
first
examined
separately.
A
peak
degree
74.7%
achieved,
there
large
improvement
properties.
Subsequently,
composite
system
TAIC
investigated.
The
82.1%
(10%
increase
compared
DTBP).
heat
deformation
temperature
80.1
°C
(22%
impact
strength
104.73
kJ/m2
(207%
neat
HDPE).
flexural
33.6
MPa
results
show
that
further
improves
degree,
resistance,
HDPE,
indicating
potential
application
engineering
materials
high
performance.
ACS Organic & Inorganic Au,
Год журнала:
2024,
Номер
4(4), С. 373 - 386
Опубликована: Май 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.
ACS Engineering Au,
Год журнала:
2024,
Номер
4(5), С. 432 - 449
Опубликована: Июль 15, 2024
Although
step-growth
polymers
(SGPs)
play
a
fundamental
role
in
the
plastics
economy,
contributing
significantly
to
various
facets
of
our
daily
life,
their
end-of-life
management
remains
inadequately
addressed.
Chemical
recycling
SGP
wastes,
involving
depolymerization
followed
by
repolymerization,
emerges
as
promising
solution
toward
achieving
circular
economy.
The
SGPs
is
usually
dynamic
equilibrium
with
polymerization
reactions,
thus
falling
under
system
amenable
Le
Chatelier's
principle.
This
perspective
endeavors
elucidate
interplay
between
principle
and
chemical
particular
emphasis
on
guidance
provided
latter
process.
To
this
end,
we
have
selected
five
conventional
SGPs,
namely,
poly(ethylene
terephthalate),
polyamides,
polycarbonates,
polyurethanes,
polyureas,
representatives
how
alterations
temperature,
pressure,
concentrations
products
or
reactants,
catalysts
influence
process
SGPs.
Additionally,
proposes
several
potential
strategies
for
applying
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 17, 2025
The
sustainable
management
of
polydiene
waste
represents
a
formidable
challenge
in
the
realm
polymer
chemistry,
given
extensive
industrial
utilization
polydienes
due
to
their
superior
elastomeric
properties.
This
comprehensive
Perspective
addresses
multifaceted
obstacles
hindering
efficient
recycling
polydienes,
encompassing
environmental
concerns,
technical
limitations,
and
economic
disincentives.
We
systematically
dissect
influence
polydienes'
chemical
structures
on
recyclability,
tracing
evolution
disposal
practices
while
assessing
current
landscape
strategies.
Our
investigation
reveals
primary
challenges
associated
with
recycling,
notably
energy-intensive
nature
modification
processes
detriments
prevailing
techniques.
Furthermore,
we
critically
evaluate
existing
methodologies─including
mechanical
energy
recovery,
recycling─highlighting
respective
merits,
constraints,
implications.
Pioneering
advancements
technology,
such
as
topochemical
polymerization
computational
prediction
models,
are
spotlighted
for
potential
revolutionize
recycling.
Looking
forward,
delineate
an
optimistic
trajectory
management,
advocating
innovative
methods,
exploration
milder
conditions,
adoption
interdisciplinary
approaches
bolster
efficiency.
culminates
discussion
pivotal
role
policy
frameworks,
life
cycle
assessments,
analyses
shaping
future
Through
this
scholarly
examination,
aim
catalyze
further
research
development
efforts
aimed
at
mitigating
impact
waste,
thereby
contributing
broader
objective
chemistry.
Industrial & Engineering Chemistry Research,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 27, 2025
Vitrimers
are
a
class
of
advanced
polymeric
materials
characterized
by
their
dynamic
covalent
networks,
which
offer
unique
properties
such
as
self-healing,
reprocessability,
and
shape
memory.
The
integration
vitrimers
into
3D
printing
technologies
presents
significant
advancement
in
the
field
additive
manufacturing,
offering
numerous
benefits
over
traditional
thermoplastics
thermosets.
use
printing,
leverages
ability
to
be
cured
reformed
under
specific
conditions,
exposure
light
or
heat.
enable
production
high-resolution
parts
that
can
easily
repaired
recycled,
addressing
key
environmental
concerns
associated
with
polymers.
Their
nature
not
only
extends
life
printed
components
but
also
reduces
waste
promotes
sustainability
enabling
recycling
materials.
Recent
developments
for
have
focused
on
optimizing
performance,
including
enhancing
mechanical
strength,
expanding
range
printable
materials,
improving
efficiency
process.
Studies
demonstrated
achieve
impressive
high
tensile
elasticity,
thermal
stability,
making
them
suitable
various
applications.
continued
research
development
hold
promise
advancing
capabilities
providing
pathway
more
sustainable
versatile
By
harnessing
vitrimers,
industry
push
boundaries
what
is
possible
material
design
functionality,
leading
innovative
solutions
complex
engineering
challenges.
This
article
provides
comprehensive
review
reported
literature
explores
potential
techniques.
It
offers
detailed
insight
present
trends
field.
Polymers,
Год журнала:
2025,
Номер
17(4), С. 535 - 535
Опубликована: Фев. 19, 2025
Due
to
excellent
chemical
resistance
and
impermeability,
high-density
polyethylene
(HDPE)
is
widely
used
in
petrochemical
transportation,
product
packaging,
sports
equipment,
marine
applications.
Yet,
with
the
wide
variety
of
service
environments,
its
mechanical
thermal
properties
do
not
meet
demand.
In
present
study,
a
compounding
cross-linker
comprising
di-tert-butyl
peroxide
(DTBP)
triallyl
isocyanurate
(TAIC)
employed
by
combining
two-step
preparation
process.
High-quality
cross-linking
reactions
are
achieved
for
HDPE.
this
DTBP
first
examined
separately.
A
peak
degree
74.7%
achieved,
there
large
improvement
properties.
Subsequently,
composite
system
TAIC
investigated.
The
82.1%
(10%
increase
compared
DTBP).
heat
deformation
temperature
80.1
°C
(22%
impact
strength
104.73
kJ/m2
(207%
neat
HDPE).
flexural
33.6
MPa
results
show
that
further
improves
degree,
resistance,
HDPE,
indicating
potential
application
engineering
materials
high
performance.
