Constructing Fully Biobased Epoxy Vitrimer Based on Disulfide Bonds with Desired Mechanical, Recyclability, and Degradability Properties
ACS Applied Polymer Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 14, 2025
Язык: Английский
Qualification of the Vitrimeric Matrices in Industrial-Scale Wet Filament Winding Processes for Type-4 Pressure Vessels
Polymers,
Год журнала:
2025,
Номер
17(9), С. 1146 - 1146
Опубликована: Апрель 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.
Язык: Английский
Epoxy-anhydride vitrimers: Reprocessability via facile transesterification
B. Satheesh Kumar,
Temina Mary Robert,
K.R. Roshith
и другие.
Next Materials,
Год журнала:
2025,
Номер
8, С. 100690 - 100690
Опубликована: Апрель 29, 2025
Язык: Английский
Bio-based imine- and disulfide-containing epoxy vitrimers with practical self-healing properties at room temperature
Polymers from Renewable Resources,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 26, 2025
Bio-based
vitrimers
have
attracted
considerable
attention
because
of
their
carbon
neutrality,
healability,
and
recyclability,
which
contribute
to
resource
saving
energy
saving.
The
reactions
vanillin
with
cystamine
1,6-diaminohexane
yielded
a
phenolic
hardener
containing
both
imine
disulfide
groups
(DVNCTA)
only
(DVNDAH),
respectively.
These
hardeners
were
utilized
cure
epoxy
resin
mixtures
comprising
bio-based
polyglycerol
polyglycidyl
ether
(PGPE)
petroleum-based
flexible
poly
(ethylene
glycol)
diglycidyl
(PEGDGE)
in
varying
molar
ratios.
cross-linking
density,
glass
transition
temperature,
mechanical
strength
the
DVNCTA-cured
diminished
as
ratio
PGPE
PEGDGE
decreased.
Remarkably,
all
cured
products
underwent
at
least
three
successful
self-healing
cycles
by
standing
room
temperature
for
24
h.
tensile
strength-based
healing
efficiency
(
η
σ
)
improved
decreasing
ratios,
reaching
maximum
(100%)
PGPE/PEGDGE
1/2.
Notably,
when
comparing
DVNCTA-
DVNDAH-cured
identical
former
exhibited
significantly
superior
performance.
Язык: Английский
A transposable adhesive from an acrylic pressure-sensitive adhesive to semi-structural adhesive with self-healing function
Results in Surfaces and Interfaces,
Год журнала:
2024,
Номер
17, С. 100290 - 100290
Опубликована: Сен. 6, 2024
Язык: Английский
Strength Retention of Carbon Fiber/Epoxy Vitrimer Composite Material for Primary Structures: Towards Recyclable and Reusable Carbon Fiber Composites
Sudhanshu Nartam,
Vishal Rautela,
S. Budhe
и другие.
Applied Mechanics,
Год журнала:
2024,
Номер
5(4), С. 804 - 817
Опубликована: Ноя. 6, 2024
Recently,
the
growth
of
recyclability
carbon
fiber
reinforced
polymer
(CFRP)
composites
has
been
driven
by
environmental
and
circular
economic
aspects.
The
main
aim
this
research
work
is
to
investigate
strength
retention
a
bio-based
vitrimer
composite
with
fibers,
which
offers
both
material
reusability.
formulation
consisted
an
epoxy
resin
composed
diglycidyl
ether
bioshpenol
A
(DGEBA)
combined
tricarboxylic
acid
(citric
acid,
CA)
cardanol,
was
then
fibers
enhance
its
performance.
Differential
scanning
calorimetry
(DSC)
Fourier
transform
infrared
(FTIR)
spectroscopy
were
performed
analyze
chemical
composition
curing
behavior
vitrimer.
Mechanical
testing
under
tensile
loading
at
room
temperature
carried
out
on
epoxy,
vitrimer,
associated
materials.
results
demonstrated
that
DGEBA/CA/cardanol
exhibited
thermomechanical
properties
comparable
those
cured
petroleum-based
agents.
It
observed
maximum
about
50
MPa,
very
close
range
resins
Notably,
ability
be
effectively
dissolved
in
dimethylformamide
(DMF)
solvent
significant
advantage,
as
it
enables
recovery
fibers.
recovered
retained
fresh
composites.
More
than
95%
after
first
recovery,
confirms
use
for
primary
secondary
applications.
These
open
up
new
avenues
efficient
recycling
contribute
overall
sustainability
level.
Язык: Английский