Recent Progress on the 3D Printing of Dynamically Cross‐Linked Polymers
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(2)
Опубликована: Сен. 28, 2023
Abstract
The
utilization
of
dynamic
cross‐linking
represents
a
highly
promising
approach
in
addressing
the
escalating
issues
plastic
pollution
and
fossil
resource
consumption.
Despite
being
extensively
investigated
over
past
decade,
various
dynamically
cross‐linked
polymers
(DCPs)
predominantly
remain
confined
to
realm
academic
research.
To
serve
as
valuable
material
for
practical
application,
advanced
processing
is
always
essential
all
kinds
materials.
3D
printing
(3DP)
enables
creation
intricate
shapes
layer‐by‐layer
without
relying
on
molds,
thus
integration
3DP
techniques
with
DCPs
holds
significant
potential
enhance
expand
applicability
DCPs.
Here,
an
overview
fundamental
principles
underlying
compatible
are
provided,
namely
photocuring
3DP,
extrusion‐based
laser
sintering‐based
3DP.
Additionally,
comprehensive
summary
representative
research
works
that
specifically
focus
application
each
respective
technique
presented.
performance
mechanism
involved
corresponding
process
thoroughly
discussed
comprehensively
reviewed.
Finally,
existing
challenges
pertaining
further
enhancing
printability,
performance,
efficiency,
etc.,
deliberated
upon,
while
proposing
directions
address
these
concerns.
Язык: Английский
New Prospects Arising from Dynamically Crosslinked Polymers: Reprogramming Their Properties
Advanced Materials,
Год журнала:
2024,
Номер
36(21)
Опубликована: Апрель 5, 2024
Abstract
Dynamically
crosslinked
polymers
(DCPs)
have
gained
significant
attention
owing
to
their
applications
in
fabricating
(re)processable,
recyclable,
and
self‐healable
thermosets,
which
hold
great
promise
addressing
ecological
issues,
such
as
plastic
pollution
resource
scarcity.
However,
the
current
research
predominantly
focuses
on
redefining
and/or
manipulating
geometries
while
replicating
bulk
properties.
Given
inherent
design
flexibility
of
dynamic
covalent
networks,
DCPs
also
exhibit
a
remarkable
potential
for
various
novel
through
postsynthesis
reprogramming
In
this
review,
recent
advancements
strategies
that
enable
transform
properties
after
synthesis
are
presented.
The
underlying
mechanisms
associated
material
overviewed
mainly
three
distinct
strategies,
namely
latent
catalysts,
material‐growth,
topology
isomerizable
networks.
Furthermore,
mutual
relationship
impact
these
when
integrated
within
one
system
discussed.
Finally,
application
prospects
relevant
issues
necessitating
further
investigation,
along
with
solutions
analyzed.
Язык: Английский
Dual-vat photopolymerization 3D printing of vitrimers
Additive manufacturing,
Год журнала:
2023,
Номер
79, С. 103930 - 103930
Опубликована: Дек. 20, 2023
Язык: Английский
Biobased Polystyrene Vitrimers for Thermoset Circularity
ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(21), С. 13034 - 13041
Опубликована: Окт. 25, 2024
Thermoset
polymers,
known
for
their
robust
thermomechanical
and
chemical
durability,
suffer
from
poor
recyclability
due
to
covalent
cross-linking.
This
study
explores
the
tunability
of
adaptable
networks
(CANs),
specifically
prepolymer-derived
vitrimers,
which
offer
both
durability
through
dynamic
cross-links.
By
utilizing
biobased
vanillin
methacrylate
(VnMA)
Priamine
cross-linkers,
we
synthesized
polystyrene
(PS)
vitrimers
with
readily
tunable
viscoelastic
properties.
The
vanillin-derived
PS
copolymer
was
cross-linked
varying
equivalents
favor
different
exchange
mechanisms:
transamination
rapid
processability
metathesis
enhanced
dimensional
stability.
Extending
prepolymer
chain
length
above
entanglement
threshold
also
introduced
physical
cross-links
that
significantly
improved
creep
resistance.
Our
findings
highlight
a
versatile
approach
creating
biobased,
reprocessable
thermosets
high
performance.
incorporation
primary
ability
tune
mechanisms
promising
pathway
sustainable
durable
polymer
materials
suitable
various
applications.
methodology
enhances
sustainability
PS-based
materials,
broadening
commercial
utility.
Язык: Английский
Vitrimers for 3D Printing Technology: Current Status and Future Perspectives
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.
Язык: Английский
Thiol‐X Chemistry: A Skeleton Key Unlocking Advanced Polymers in Additive Manufacturing
Macromolecular Materials and Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 5, 2025
Abstract
Using
additive
manufacturing
(AM)
technologies
for
the
fabrication
of
advanced
polymeric
objects
is
a
logical
progression
to
realize
their
potential
within
engineering
applications
that
demand
complex
geometries.
Thiol‐X
chemistry
has
presented
itself
as
diverse
and
invaluable
toolkit
accomplish
such,
satisfying
both
processing
requirements
properties
desired
fabricate
range
using
variety
AM
technologies.
The
“click”
nature
many
thiol‐X
reactions,
mechanisms
polymerization,
functional
group
tolerance
orthogonality,
desirable
achievable
with
presents
synergistic
opportunity
few
other
chemistries
can
broadly
facilitate.
As
result,
use
gained
rapid
traction
in
recent
years
it
now
case
are
being
viewed
two
sides
same
coin,
whereby
scope
limitations
whole
system
appreciated.
This
review
highlights
advancements,
status,
scope,
opportunities
achieve
polymers
by
critically
examining
structure‐property‐processing‐performance
relationships
between
different
various
Язык: Английский
Latent catalysts in vitrimers
Polymer Chemistry,
Год журнала:
2024,
Номер
15(19), С. 1932 - 1936
Опубликована: Янв. 1, 2024
A
wide
variety
of
latent
catalysts
are
elucidated
in
vitrimer
chemistry.
Язык: Английский
Microscale manipulation of bond exchange reactions in photocurable vitrimers with a covalently attachable photoacid generator
Chemical Science,
Год журнала:
2024,
Номер
15(39), С. 16271 - 16280
Опубликована: Янв. 1, 2024
Vitrimers
are
polymer
networks
with
covalent
bonds
that
undergo
reversible
exchange
reactions
and
rearrange
their
topology
in
response
to
an
external
stimulus.
The
temperature-dependent
change
viscoelastic
properties
is
conveniently
adjusted
by
selected
catalysts.
In
these
thermo-activated
systems,
the
lack
spatial
control
can
be
overcome
using
photolatent
Herein,
we
advance
this
concept
locally
manipulate
bond
on
a
single
digit
microscale
level.
For
this,
synthetize
linkable
non-ionic
photoacid
generator,
which
covalently
attached
thiol-click
photopolymer.
UV
induced
deprotection
of
yields
strong
immobilized
sulfonic
acid
species,
able
efficiently
catalyze
transesterification
reactions.
Covalent
attachment
formed
prevents
migration/leaching
processes
enables
precise
tuning
material
properties.
As
proof
concept,
positive
toned
microstructures
resolution
5
μm
inscribed
thin
films
direct
two-photon
absorption
laser
writing
subsequent
depolymerization.
addition,
possibility
reprogram
bulk
demonstrated
performing
post-modification
reaction
ethylene
glycol
carboxylic
acids.
Young's
modulus
varied
between
3.3
MPa
11.9
giving
rise
versatility
newly
introduced
catalysts
for
creating
light
processable
transformable
materials.
Язык: Английский
The use of a sulfonium-based photoacid generator in thiol–ene photopolymers for the controlled activation of transesterification through chemical amplification
Polymer Chemistry,
Год журнала:
2023,
Номер
15(4), С. 321 - 331
Опубликована: Дек. 16, 2023
Herein,
we
exploit
chemical
amplification
to
release
–OH
groups
in
dynamic
covalent
photopolymers
on-demand.
Via
a
single
photon
event,
cascade
of
reactions
occurs,
which
allows
the
polymers
flow
through
thermo-activated
transesterification.
Язык: Английский
Light‐Driven, Reversible Spatiotemporal Control of Dynamic Covalent Polymers
Advanced Materials,
Год журнала:
2024,
Номер
36(47)
Опубликована: Окт. 6, 2024
Abstract
Dynamic
covalent
polymer
networks
exhibit
a
cross‐linked
structure
like
conventional
thermosets
and
elastomers,
although
their
topology
can
be
reorganized
through
externally
triggered
bond
exchange
reactions.
This
characteristic
enables
unique
combination
of
repairability,
recyclability
dimensional
stability,
crucial
for
sustainable
industrial
economy.
Herein
the
application
photoswitchable
nitrogen
superbase
is
reported
spatially
resolved
reversible
control
over
dynamic
within
thiol‐ene
photopolymer.
By
exposure
to
UV
or
visible
light,
associative
between
thioester
links
thiol
groups
successfully
gained
over,
thereby
macroscopic
mechanical
material
properties,
in
locally
controlled
manner.
Consequently,
resulting
reorganization
global
network
utilize
this
previously
unrealizable
advanced
applications
such
as
resolved,
reshaping
well
micro‐imprinting
multiple
steps.
Finally,
presented
concept
contributes
fundamentally
evolution
polymers
provides
universal
applicability
adaptable
relying
on
base‐catalyzed
mechanism.
Язык: Английский