Materials Horizons,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Debonding-on-demand
adhesives
enable
the
disassembly
of
multilayer
electronic
devices
under
external
stimuli,
facilitating
efficient
recycling
and
reuse
valuable
components.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(18)
Опубликована: Янв. 22, 2024
Abstract
Sustainable
adhesives
with
simultaneous
high
strength
and
excellent
ductility
are
important
but
still
challenging.
Here,
an
epoxy
adhesive
simultaneously
strong,
tough,
sustainable
features
by
designing
a
new
hierarchical
energy‐dissipated
cross‐linking
structure
is
reported:
annular
containing
quadruple
internal
B─N
coordination
boronic
esters
(AQBN).
Under
small
strain,
the
AQBN
rigid
to
enhance
tensile
of
adhesive.
With
medium
strain
applied,
its
non‐coplanar
ring
can
orderly
open,
providing
mechanical
energy
dissipation
ductility.
Therefore,
this
multilevel
endow
both
toughness.
Besides,
rapid
dynamic
exchange
in
enable
have
good
sustainability
environmental
tolerance,
respectively.
As
result,
exhibit
(18.5
MPa),
outstanding
toughness
(work
debonding
29692
N
m
−1
),
chemical/physical
recyclability,
reliability
(humidity,
water,
high/ultralow
temperature,
organic
solvents).
This
work
provides
strategy
for
balancing
strength,
toughness,
adhesives.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Июнь 7, 2024
The
regulation
of
topological
structure
covalent
adaptable
networks
(CANs)
remains
a
challenge
for
epoxy
CANs.
Here,
we
report
strategy
to
develop
strong
and
tough
supramolecular
thermosets
with
rapid
reprocessability
room-temperature
closed-loop
recyclability.
These
were
constructed
from
vanillin-based
hyperbranched
resin
(VanEHBP)
through
the
introduction
intermolecular
hydrogen
bonds
dual
dynamic
bonds,
as
well
formation
intramolecular
cavities.
structures
confer
remarkable
energy
dissipation
capability
thermosets,
leading
high
toughness
strength.
Due
imine
exchange
reversible
noncovalent
crosslinks,
can
be
rapidly
effectively
reprocessed
at
120
°C
within
30
s.
Importantly,
efficiently
depolymerized
room
temperature,
recovered
materials
retain
structural
integrity
mechanical
properties
original
samples.
This
may
employed
design
tough,
recyclable
practical
applications.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(31)
Опубликована: Май 20, 2024
Dithioacetals
are
heavily
used
in
organic,
material
and
medical
chemistries,
exhibit
huge
potential
to
synthesize
degradable
or
recyclable
polymers.
However,
the
current
synthetic
approaches
of
dithioacetals
polydithioacetals
overwhelmingly
dependent
on
external
catalysts
organic
solvents.
Herein,
we
disclose
a
catalyst-
solvent-free
acetal-thiol
click-like
reaction
for
synthesizing
polydithioacetals.
High
conversion,
higher
than
acid
catalytic
reaction,
can
be
achieved.
universality
was
confirmed
by
monitoring
reactions
linear
cyclic
acetals
(including
renewable
bio-sourced
furan-acetal)
with
aliphatic
aromatic
thiols,
mechanism
monomolecular
nucleophilic
substitution
(S
Macromolecular Rapid Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 14, 2025
Abstract
Adhesives
are
indispensable
in
both
daily
household
applications
and
advanced
industrial
settings,
where
they
must
deliver
exceptional
bonding
performance.
Ionogel
adhesives,
which
feature
a
supporting
polymer
network
infused
with
ionic
liquid
(IL),
have
emerged
as
promising
candidates
due
to
their
unique
structural
functional
properties.
The
presence
of
species
within
ionogels
promotes
non‐covalent
interactions—such
bonds,
ion‐dipole
interactions,
hydrogen
bonding—that
enhance
cohesion
the
material
adhesion
various
substrates.
These
characteristics
make
ideal
for
that
require
robust
adhesive
performance,
especially
demanding
environments.
Despite
growing
interest
ionogel
comprehensive
review
latest
advancements
this
area
is
lacking.
This
paper
aims
fill
gap
by
categorizing
adhesives
based
on
composition
discussing
strategies
Additionally,
novel
designed
specific
highlighted.
Finally,
current
state
research
summarized,
offers
insights
into
challenges
future
opportunities
development
adhesives.