Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 2, 2024
Abstract
Chemical
recycling
to
monomer
(CRM)
provides
an
ideal
solution
for
reducing
plastic
waste
and
achieving
a
circular
polymer
economy.
Cyclopentene
(CP)
its
derivatives
are
representative
molecules
that
exemplify
efficient
CRM
process
under
mild
conditions.
However,
most
CP‐based
polymers
possess
limited
thermal
mechanical
properties,
constraining
their
potential
applications.
Herein,
new
with
superior
thermo‐mechanical
properties
autonomous
functions
proposed
by
integrating
anthracene
as
dynamic
functional
motif.
Anthracenes
not
only
serve
supramolecular
cross‐linkages
through
strong
π–π
interactions
but
also
form
stronger
chemical
ones
UVA
light
irradiation,
enhancing
properties.
Furthermore,
damage‐reporting,
self‐healing,
local
shape
reprogramming
capabilities
accomplished
utilizing
the
reversible
nature
of
photodimerized
anthracene.
A
orthogonal
depolymerization
condition
facilitates
recovery
even
from
mixed
wastes.
This
work
presents
simple
yet
effective
strategy
expand
usability
chemically
recyclable
contribute
closed‐loop
Chemical Reviews,
Год журнала:
2024,
Номер
124(7), С. 4393 - 4478
Опубликована: Март 22, 2024
Polyesters
carrying
polar
main-chain
ester
linkages
exhibit
distinct
material
properties
for
diverse
applications
and
thus
play
an
important
role
in
today's
plastics
economy.
It
is
anticipated
that
they
will
even
greater
tomorrow's
circular
economy
focuses
on
sustainability,
thanks
to
the
abundant
availability
of
their
biosourced
building
blocks
presence
bonds
can
be
chemically
or
biologically
cleaved
demand
by
multiple
methods
bring
about
more
desired
end-of-life
plastic
waste
management
options.
Because
this
potential
promise,
there
have
been
intense
research
activities
directed
at
addressing
recycling,
upcycling
biodegradation
existing
legacy
polyesters,
designing
biorenewable
alternatives,
redesigning
future
polyesters
with
intrinsic
chemical
recyclability
tailored
performance
rival
commodity
are
either
petroleum
based
and/or
hard
recycle.
This
review
captures
these
exciting
recent
developments
outlines
challenges
opportunities.
Case
studies
poly(lactic
acid),
poly(3-hydroxyalkanoate)s,
poly(ethylene
terephthalate),
poly(butylene
succinate),
poly(butylene-adipate
presented,
emerging
recyclable
comprehensively
reviewed.
Macromolecules,
Год журнала:
2024,
Номер
57(5), С. 1919 - 1940
Опубликована: Фев. 22, 2024
The
large
production
and
indiscriminate
disposal
of
plastics
have
resulted
in
serious
resource
global
environmental
crises,
which
has
raised
a
demand
to
develop
more
sustainable
circular
economy.
An
ideal
strategy
address
the
end-of-life
issue
is
next-generation
polymers
with
closed-loop
life
cycles,
can
be
selectively
depolymerized
back
monomers
at
end
their
service
life.
Aliphatic
polyesters
prepared
by
ring-opening
polymerization
(ROP)
moderately
strained
lactones
shown
great
potential
recyclable
polymers.
This
Perspective
highlights
recent
achievements
for
that
are
derived
from
four-,
five-,
six-,
seven-membered
focusing
on
discussion
thermodynamic
kinetic
considerations,
monomer
design
principles
polymer
preparations,
material
properties,
chemical
recyclability.
Finally,
current
challenges
possible
directions
also
discussed.
Chemical Reviews,
Год журнала:
2024,
Номер
124(13), С. 8473 - 8515
Опубликована: Июнь 27, 2024
A
powerful
toolbox
is
needed
to
turn
the
linear
plastic
economy
into
circular.
Development
of
materials
designed
for
mechanical
recycling,
chemical
and/or
biodegradation
in
targeted
end-of-life
environment
are
all
necessary
puzzle
pieces
this
process.
Polyesters,
with
reversible
ester
bonds,
already
forerunners
circularity:
poly(ethylene
terephthalate)
(PET)
most
recycled
material
suitable
and
while
common
aliphatic
polyesters
biodegradable
under
favorable
conditions,
such
as
industrial
compost.
However,
circular
design
needs
be
further
tailored
different
options
enable
recycling
greener
conditions
rapid
enough
even
less
environmental
conditions.
Here,
we
discuss
molecular
polyester
chain
targeting
enhancement
circularity
by
incorporation
more
easily
hydrolyzable
additional
dynamic
or
degradation
catalyzing
functional
groups
part
chain.
The
utilization
replacement
current
volume
plastics
also
reviewed
well
embedment
green
catalysts,
enzymes
matrices
facilitate
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Апрель 8, 2024
Abstract
The
development
of
closed-loop
recycling
polymers
that
exhibit
excellent
performance
is
great
significance.
Sulfur-rich
possessing
optical,
thermal,
and
mechanical
properties
are
promising
candidates
for
chemical
but
lack
efficient
synthetic
strategies
achieving
diverse
structures.
Herein,
we
report
a
universal
strategy
producing
polytrithiocarbonates,
class
sulfur-rich
polymers,
via
the
polycondensation
dithiols
dimethyl
trithiocarbonate.
This
has
compatibility
with
wide
range
monomers,
including
aliphatic,
heteroatomic,
aromatic
enabling
synthesis
polytrithiocarbonates
present
offers
versatile
platform
construction
thermoplastics,
elastomers,
vitrimers.
Notably,
these
can
be
easily
depolymerized
solvolysis
into
corresponding
which
repolymerized
to
virgin
without
changing
material
properties.
JACS Au,
Год журнала:
2023,
Номер
3(9), С. 2436 - 2450
Опубликована: Авг. 23, 2023
Over
the
past
couple
of
decades,
polymers
that
depolymerize
end-to-end
upon
cleavage
their
backbone
or
activation
a
terminal
functional
group,
sometimes
referred
to
as
"self-immolative"
polymers,
have
been
attracting
increasing
attention.
They
are
growing
interest
in
context
enhancing
polymer
degradability
but
also
recycling
they
allow
monomers
be
regenerated
controlled
manner
under
mild
conditions.
Furthermore,
highly
promising
for
applications
smart
materials
due
ability
provide
an
amplified
response
specific
signal,
single
sensing
event
is
translated
into
generation
many
small
molecules
through
cascade
reactions.
From
chemistry
perspective,
depolymerization
relies
on
principles
self-immolative
linkers
and
ceiling
temperature
(Tc).
In
this
article,
we
will
introduce
key
chemical
concepts
foundations
field
then
our
perspective
recent
exciting
developments.
For
example,
over
few
years,
new
depolymerizable
backbones,
including
polyacetals,
polydisulfides,
polyesters,
polythioesters,
polyalkenamers,
developed,
while
modern
approaches
conventional
backbones
such
polymethacrylates
introduced.
Progress
has
made
topological
evolution
systems,
introduction
fully
block
copolymers,
hyperbranched
networks.
precision
sequence-defined
oligomers
synthesized
studied
data
storage
encryption.
Finally,
perspectives
future
opportunities
challenges
discussed.
International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(3), С. 1647 - 1647
Опубликована: Янв. 29, 2024
The
low
percentage
of
recyclability
the
polymeric
materials
obtained
by
olefin
transition
metal
(TM)
polymerization
catalysis
has
increased
interest
in
their
substitution
with
more
eco-friendly
reliable
physical
and
mechanical
properties.
Among
variety
known
biodegradable
polymers,
linear
aliphatic
polyesters
produced
ring-opening
(ROP)
cyclic
esters
occupy
a
prominent
position.
polymer
properties
are
highly
dependent
on
macromolecule
microstructure,
control
stereoselectivity
is
necessary
for
providing
precise
finely
tuned
In
this
review,
we
aim
to
outline
main
synthetic
routes,
also
applications
three
commercially
available
materials:
Polylactic
acid
(PLA),
Poly(Lactic-co-Glycolic
Acid)
(PLGA),
Poly(3-hydroxybutyrate)
(P3HB),
all
easily
accessible
via
ROP.
framework,
understanding
origin
enantioselectivity
factors
that
determine
it
then
crucial
development
suitable
thermal
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(19), С. 9609 - 9651
Опубликована: Янв. 1, 2024
We
present
the
state-of-the-art
of
circular
polymers
based
on
monomer
and
polymer
design
reversible
ring-opening
addition
polymerization
reactions
without
involvement
other
reactants.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(24)
Опубликована: Апрель 9, 2024
In
this
paper,
we
proposed
a
heteroatom
substitution
strategy
(HSS)
in
the
δ-valerolactone
(VL)
system
to
modulate
thermodynamics
toward
chemically
recyclable
polyesters.
Three
VL-based
monomers
containing
different
heteroatoms
(M
