Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 18, 2025
Abstract
In
the
field
of
bioadhesives,
development
machinable
adhesives
with
a
“glue‐to‐gel
transition”
remains
significant
challenge.
This
study
presents
novel
design
strategy
to
endow
Gel/Eg
adhesive
mechanical
machinability.
It
leverages
combination
hydrogen
bond
interactions,
metal
complexation,
and
secondary
structure
gelatin
through
one‐step
mixing
method.
Rheological
analysis
shows
that
exhibits
frequency‐dependent
transition,”
maintaining
glue
state
at
low
frequencies
transitioning
gel
higher
frequencies.
During
stretching,
β‐sheet
transforms
into
random
coil
structure.
Moreover,
features
excellent
water
resistance,
swelling
ratio,
strong
adhesion
strength,
high
extensibility,
instantaneous
adhesion,
self‐healing,
both
biocompatibility
hemocompatibility.
These
attributes
enable
exhibit
multiple
fault‐tolerance
capabilities
on
tissue
surfaces,
highlighting
its
potential
for
diverse
biomedical
applications.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 29, 2025
Abstract
With
the
increasing
demand
in
fields
such
as
wearable
sensors,
soft
robotics,
tissue
engineering,
and
wound
dressings,
development
of
hydrogels
with
strong
adhesion
wet
environments
has
become
a
critical
focus
research.
However,
most
existing
adhesive
materials
lack
ability
to
transition
rapidly
reversibly
between
nonadhesive
states,
their
is
often
limited
single
environment.
In
this
study,
smart
interfacial
hydrogel
tunable
properties
across
diverse
liquid
presented.
By
tailoring
interchain
interactions
leveraging
electrostatically
induced
traction
hydrophilic
hydrophobic
chain
segments,
achieves
reversible
modulation
response
temperature
changes
while
maintaining
adhesion.
Notably,
its
strength
at
elevated
temperatures
(45
°C)
approximately
three
times
greater
than
lower
(5
°C).
The
exhibits
an
227
kPa
aqueous
213
oil‐containing
environments.
This
innovative
design
strategy
enables
exhibit
broad
switchable,
dynamic
capabilities,
unlocking
significant
potential
for
wide
range
applications.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(18), P. 10435 - 10508
Published: Sept. 16, 2024
The
mechanical
properties
of
polymer
gels
devote
to
emerging
devices
and
machines
in
fields
such
as
biomedical
engineering,
flexible
bioelectronics,
biomimetic
actuators,
energy
harvesters.
Coupling
network
architectures
interactions
has
been
explored
regulate
supportive
characteristics
gels;
however,
systematic
reviews
correlating
mechanics
interaction
forces
at
the
molecular
structural
levels
remain
absent
field.
This
review
highlights
engineering
gel
a
comprehensive
mechanistic
understanding
regulation.
Molecular
alters
architecture
manipulates
functional
groups/moieties
level,
introducing
various
permanent
or
reversible
dynamic
bonds
dissipative
energy.
usually
uses
monomers,
cross-linkers,
chains,
other
additives.
Structural
utilizes
casting
methods,
solvent
phase
regulation,
mechanochemistry,
macromolecule
chemical
reactions,
biomanufacturing
technology
construct
tailor
topological
structures,
heterogeneous
modulus
compositions.
We
envision
that
perfect
combination
may
provide
fresh
view
extend
exciting
new
perspectives
this
burgeoning
also
summarizes
recent
representative
applications
with
excellent
properties.
Conclusions
are
provided
from
five
aspects
concise
summary,
mechanism,
biofabrication
upgraded
applications,
synergistic
methodology.
Materials Horizons,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Adhesion-switchable
ionogels
with
ultralow
hysteresis
are
developed
through
moisture-mediated
phase
separation
using
opposite-affinity
ionic
components.
These
show
great
potential
in
smart
adhesives
for
targeted
object
capture.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 26, 2024
Abstract
Compared
to
conventional
gels,
eutectogels
encompassing
deep
eutectic
solvents
(DESs)
circumvent
the
shortboards
including
poor
temperature
resistance,
high
cost,
and
undesired
toxicity.
However,
existing
suffer
weak
intra‐
interchain
interactions,
which
culminates
in
vanishing
autofluorescence,
mechanic
feeble
adhesion.
Although
myriad
strategies
have
been
proposed
boost
polymer/polymer
interactions
within
processes
are
time‐consuming,
not
suitable
for
mass
production
or
emergent
deployment.
Herein,
deal
with
it,
a
facile
solvation
chemistry
is
leveraged
build
dynamic
rigid
network
via
incorporating
active
polymer
backbones
DESs.
Within
these
eutectogels,
DESs
play
magnet‐like
role,
physically
cluster
chains
together
multiple
noncovalent
forces,
thus
intensifying
DESs/polymer
interactions.
This
bestows
rare
autofluorescence
unprecedentedly
strength,
toughness,
adhesion
among
reported
analogues,
even
harsh
conditions.
Moreover,
mechanism
of
fully
scrutinized
first
time.
It
believed
that
this
strategy
can
be
easily
expanded
orchestrations
other
soft
materials.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 9, 2024
Abstract
Marine
oil
exploration
is
important
yet
greatly
increases
the
risk
of
leakage,
which
will
result
in
severe
environment
pollution
and
economic
losses.
It
an
urgent
need
to
develop
effective
underoil
adhesives.
However,
realizing
adhesion
even
harder
than
those
underwater,
due
stubborn
attachment
a
highly
viscous
layer
on
target
surface.
Here,
inspired
by
endocytosis,
tough
gel
tape
composed
zwitterionic
polymer
network
surfactants
developed.
The
amphiphilic
can
form
micelle
capture
droplets
transport
them
from
interface
via
electrostatic
attraction
backbone,
mimicking
endocytosis
achieving
robust
adhesion.
Benefiting
oil‐resistance
further
realizes
combination
i)
long‐term
with
high
durability,
ii)
repeated
oil,
iii)
renewable
efficiency
after
exhausted
use.
exhibits
ultra‐high
adhesive
toughness
2446.86
J
m
−2
stainless
steel
silicone
30
days'
oil‐exposure;
such
value
surpasses
many
achieved
underwater
greater
performance
commercial
tape.
strategy
illustrated
here
motivate
design
sustainable
efficient
adhesives
for
wet
environments.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 27, 2024
Abstract
Adhesives
have
been
widely
used
to
splice
and
repair
materials
meet
practical
needs
of
humanity
for
thousands
years.
However,
developing
robust
adhesives
with
balanced
adhesive
cohesive
properties
still
remains
a
challenging
task.
Herein,
we
report
the
design
preparation
mechanically
interlocked
[
n]daisy
chain
network
(
DC
MIN)
by
orthogonal
integration
mechanical
bonds
2‐ureido‐4[1H]‐pyrimidone
(UPy)
H‐bonding
in
single
system.
Specifically,
UPy
moiety
plays
dual
role:
it
allows
formation
cross‐linked
engages
multivalent
interactions
substrate
strong
interfacial
bonding.
The
chain,
serving
as
polymeric
backbone
adhesive,
is
able
effectively
alleviate
applied
stress
uphold
integrity
through
synergistic
intramolecular
motions,
thus
significantly
improves
performance.
Comparative
analysis
control
made
same
quadruple
but
non‐interlocked
backbones
demonstrates
that
our
MIN
possesses
superior
adhesion
over
wide
temperature
range.
These
findings
not
only
contribute
deep
understanding
structure‐property
relationship
between
microscopic
bond
motions
macroscopic
also
provide
valuable
guide
optimizing
principles
adhesives.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 25, 2024
Abstract
Adhesive
conducting
elastomers
are
rising
materials
towards
cutting‐edge
applications
in
wearable
and
implantable
soft
electronics.
Yet,
engineering
the
conductive
adhesives
with
robust
tunable
interfacial
bonding
strength
is
still
its
infancy
stage.
We
herein
identify
a
structurally
novel
supramolecular
polymer
scaffold,
characterized
by
synergistic
coexistence
of
hydrogen‐bonding
(H−bonding)
interactions
electrostatic
ionic
junctions,
endowing
elastic
remarkable
thermal/electro‐responsive
performance.
H−bonding
association
interaction
play
orthogonal
yet
roles
strong
adhesive
formation,
serving
as
leveraging
forces
for
opposing
both
cohesion
adhesion
energy.
To
do
so,
six‐arm
star‐shaped
random
copolymers
P1
,
P2
strategically
designed,
bearing
PDAP
(poly(diaminopyridine
acrylamide))
PThy
(poly(thymine))
segments,
which
can
form
hetero‐complementary
DAP/Thy
association,
along
poly(ionic
liquid)s
segment:
PMBT,
(poly(1‐[2‐methacryloylethyl]‐3‐methylimidazolium
bis(trifluoromethane)‐sulfonamide)).
interaction,
yield
dual
crosslinked
polymeric
networks
Moreover,
impact
interfere
configuration
liberate
more
free
DAP
Thy
motifs
to
H−bonds
substrate,
affording
surface
manner.
This
work
demonstrates
significant
forward
step
potential
devoted
hybrid
electronic
devices.
