Published: Jan. 1, 2024
Language: Английский
Polymers, Journal Year: 2024, Volume and Issue: 16(15), P. 2113 - 2113
Published: July 24, 2024
The development of more recyclable materials is a key requirement for transition towards circular economy. Thanks to exchange reactions, vitrimer, an attractive alternative materials, innovative class polymers that able change its topology without decreasing connectivity. In this work, bisphenol compound (VP) was prepared from saturated cardanol, i.e., 3−pentadecylphenol and vanillyl alcohol. Then, VP epoxidized obtain epoxide (VPGE). Finally, VPGE citric acid (CA) were polymerized in the presence catalyst TBD prepare fully bio−based vitrimer based on transesterification. results differential scanning calorimetry (DSC) showed VPGE/CA system could be crosslinked at around 163 °C. cardanol−derived vitrimers had good network rearrangement properties. Meanwhile, because dynamic structural elements network, material endowed with excellent self−healing, welding, recyclability.
Language: Английский
Citations
4
Polymers, Journal Year: 2025, Volume and Issue: 17(3), P. 373 - 373
Published: Jan. 30, 2025
Epoxy-based vitrimers represent a paradigm shift in material science, offering an unprecedented combination of mechanical robustness, environmental sustainability, and reconfigurability. These dynamic polymer systems utilize associative covalent bonds (DCBs) such as transesterification to blend the structural integrity thermosets with recyclability self-healing properties thermoplastics. This unique makes ideal candidates for high-performance applications industries civil engineering, where durability, repairability, compatibility are critical. vitrimers, particular, exhibit exceptional capabilities, allowing them autonomously repair microcracks damage, restoring under appropriate stimuli heat or light. Their further aligns global sustainability goals by reducing waste lifecycle costs. Recent advancements have also integrated bio-based feedstocks scalable manufacturing methods, enhancing feasibility these materials industrial applications. review explores underlying mechanisms, recycling processes, emerging role epoxy-based engineering. Challenges related scalability, optimization, regulatory acceptance discussed, focus on their potential drive sustainable innovation infrastructure materials.
Language: Английский
Citations
0
Polymer Engineering and Science, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 31, 2025
Abstract Vitrimers are developed as a further step towards improving sustainable networked polymers which can be reprocessed while having crosslinks at the same time. However, several competing factors jeopardize and actually manipulate claimed benefits of crosslinking. This review discusses different enhanced properties including chemical, rheological, mechanical that reported in literature. In addition, it presents opposite non‐common resulted from Moreover, reprocessing healing methods efficiencies discussed. Highlights After crosslinking, may result better or worse properties. Recyclability Healability provide crosslinked polymers. offer welding for incompatible
Language: Английский
Citations
0
European Polymer Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113812 - 113812
Published: Feb. 1, 2025
Language: Английский
Citations
0
Published: May 9, 2024
Electrical conductivity in nanocomposites is a complex phenomenon governed by myriad number of physical and chemical factors. However, the interrelationships between segmental dynamics its effect on electrical less understood. Herein we create solvent free nanocomposite synthesized single step process. Facile covalent bonding achieved functionalized nanotubes lignin-based matrix using small molecule coupling agents. The shearing are hypothesized to lead breaking larger agglomerates, leading excellent dispersion thereby percolation at much lower concentrations than can be traditional blending. We show that while above process utilized achieve thus conductivity, also plays key role dictating conductivity.
Language: Английский
Citations
1
MRS Communications, Journal Year: 2024, Volume and Issue: 14(4), P. 534 - 542
Published: May 16, 2024
Language: Английский
Citations
1
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 24, 2024
Microwave-stimulated smart self-healable polymeric coatings with significant protective technology against corrosion have been developed in this work. Herein, a generous approach is strategized to generate linseed oil-derived epoxy composites embedded reduced graphene oxide (rGO) as nanofiller the shielding network. The composite showed excellent self-healing and shape memory properties when irradiated microwaves due dynamic reversible nature of disulfide covalent bond exchange mechanism. network also has improved thermomechanical thermal stability, storage modulus 20.8 GPa low activation energy 79 kJ/mol, indicating fast reaction. amine functionality contributes protection, 99.9% protection efficiency, validated via Tafel plot. hydrophobicity, 131° contact angle. This study provides insights into engineering application materials anticorrosive coatings.
Language: Английский
Citations
1
Polymer, Journal Year: 2024, Volume and Issue: unknown, P. 127727 - 127727
Published: Oct. 1, 2024
Language: Английский
Citations
1
Published: May 9, 2024
Polymer-based
composites
frequently
encounter
damage,
often
lurking
beneath
the
surface
and
proving
challenges
to
their
early
detection
repair.
While
material-based
sensors
show
promise
for
encoding
self-sensing
properties
within
these
composites,
in
situ
healing
reprocessability
remain
significant
challenges.
Therefore,
overarching
goal
of
this
study
is
creation
a
reprocessable
polymeric
composite
encoded
with
self-healing
attributes
ability
autonomously
sense
damage.
At
core
innovation
are
vitrimers,
material
characterized
by
covalently
adaptive
dynamic
network
responsive
external
factors
such
as
heat.
They
combine
thermoset-like
resilience
thermoplastic-like
flowability
on
demand
under
stimuli.
We
nanoengineer
polyester-based
vitrimeric
polymer
incorporating
piezoresistive
carbon
nanotubes
(CNTs)
reinforcing
elements
that
not
only
enhance
its
mechanical
strength
but
also
create
percolation
composite,
thereby
enabling
properties,
all
while
preserving
intrinsic
capabilities
offered
matrix.
The
fabrication
process
involves
solvent-free
polymerization
method
combines
epoxy
anhydride-containing
monomers
~
0.1
wt.%
CNTs.
Once
it
was
established
introduction
CNTs
into
matrix
did
compromise
strain-sensing
were
applying
cyclic
loading
measuring
electrical
resistance.
Strikingly,
CNT-enhanced
vitrimer
consistently
retains
sensing
through
repeated
cycles
reshaping
reprocessing,
underscoring
potential
robust
distributed
strain
sensor.
This
easily
recyclable
without
harsh
chemical
treatments.
Preliminary
findings
from
conclusively
demonstrate
bulk
boasts
both
detect
charting
promising
course
towards
development
mechanically
resilient
multifunctional
seamlessly
integrates
selfsensing
capabilities.
Language: Английский
Citations
0
Published: Jan. 1, 2024
Language: Английский
Citations
0