Current State-of-the-Art and Perspectives in the Design and Application of Vitrimeric Systems
Molecules,
Journal Year:
2025,
Volume and Issue:
30(3), P. 569 - 569
Published: Jan. 27, 2025
To
fulfill
the
current
circular
economy
concept,
academic
and
industrial
communities
are
devoting
significant
efforts
to
plastic
materials’
end-of-life.
Unlike
thermoplastics,
which
easy
recover
re-valorize,
recycling
thermosets
is
still
difficult
challenging.
Conversely,
because
of
their
network
structure,
thermosetting
polymer
systems
exhibit
peculiar
features
that
make
these
materials
preferable
for
several
applications
where
high
mechanical
properties,
chemical
inertness,
thermal
stability,
among
others,
demanded.
In
this
view,
vitrimers
have
quite
recently
attracted
attention
scientific
community,
as
they
can
form
dynamic
covalent
adaptive
networks
provide
properties
typical
while
keeping
possibility
being
processed
(and,
therefore,
mechanically
recycled)
beyond
a
certain
temperature.
This
review
aims
an
overview
vitrimers,
elucidating
most
recent
advances
posing
some
perspectives
forthcoming
years.
Language: Английский
Qualification of the Vitrimeric Matrices in Industrial-Scale Wet Filament Winding Processes for Type-4 Pressure Vessels
Polymers,
Journal Year:
2025,
Volume and Issue:
17(9), P. 1146 - 1146
Published: April 23, 2025
The
production
of
fibre-reinforced
composites
for
use
in
applications
such
as
type-4
pressure
vessels
hydrogen
storage
is
achieved
through
the
a
thermoset
matrix.
However,
recycling
thermosets
presents
significant
challenge
due
to
lack
established
methods.
Epoxy-based
vitrimers
show
characteristics
during
manufacturing
and
utilisation
phases
but
exhibit
thermoplastic
behaviour
at
elevated
temperatures
190
°C.
This
study
investigates
industrial-scale
carbon
fibre
reinforced
via
wet
filament
winding,
exemplified
by
vessel
demonstrator.
Processing
conditions
industrial
processes
have
yet
be
applied
vitrimers;
therefore,
two
vitrimer
formulations
are
compared
conventional
epoxy
thermoset.
processability
resulting
composite
quality
wound
using
these
materials
matrices
compared.
mechanical
properties
an
interlaminar
shear
strength
test,
demonstrating
that
vitrimeric
19.8%
(23
°C)
49.2%
(140
improved
strength.
Consequently,
epoxy-based
investigated
this
can
employed
direct
replacement
matrix
applications,
with
potential
composite.
To
increase
qualities,
winding
process
must
adapted
vitrimers,
since
pore
free
could
not
achieved.
Language: Английский
Toward Circular Polymer Materials and Manufacturing: Dynamic Bonding Strategies for Upcycling Thermoplastics and Thermosets
Leila Shahriari,
No information about this author
Sungjin Kim
No information about this author
Macromolecular Rapid Communications,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 7, 2025
Abstract
The
global
production
of
plastics
has
reached
unprecedented
levels,
with
<10%
being
recycled
and
even
fewer
more
than
once.
This
lack
circularity
poses
critical
environmental
threats.
However,
upcycling—recycling
materials
while
improving
their
properties
functionality—through
dynamic
bonding
strategies
offers
a
promising
approach
to
enhancing
polymer
sustainability.
Dynamic
bonds
enable
polymeric
structures
reconfigure
under
specific
conditions,
thermal,
chemical,
mechanical
resilience
controllability
facilitating
recyclability.
review
specifically
takes
the
viewpoint
upcycling
existing
thermoplastics
thermosets
develop
sustainable
covalent
networks
(DCNs).
Integrating
these
DCN
into
design
additive
manufacturing
(AM)
feedstocks
creates
unique
benefits
compared
traditional
systems.
is
briefly
highlighted
in
extrusion‐based
light‐based
AM,
assessing
potential
for
improved
material
processability,
recyclability,
creation
high‐value
customized
products.
combination
technologies
AM
techniques
presents
significant
opportunity
advance
sustainability
macromolecular
science.
Language: Английский