ACS Applied Materials & Interfaces,
Journal Year:
2021,
Volume and Issue:
13(30), P. 36574 - 36586
Published: July 24, 2021
The
design
of
hydrogels
with
switchable
adhesion
and
stable
antiswelling
property
in
a
wet
environment
has
remained
challenge.
Here,
we
report
biomimetic
hydrogel
that
can
adhere
detach
on-demand
on
various
material
surfaces,
which
is
realized
by
thermal-triggered
shape
transformation
hexagonal
micropillar
patterned
hydrogels.
are
cross-linked
two
cross-linkers
poly(ethylene
glycol)
dimethacrylate
2-ureidoethyl
methacrylate,
guarantee
the
strong
mechanical
environment.
maintain
water
content
solutions
variable
pH,
temperature,
salt
concentration,
change
volume
does
not
exceed
2%.
In
addition,
due
to
dynamical
hydrogen
bonds
dipole–dipole
interaction
hydrogels,
exhibit
shape-memory
effect.
recover
more
than
80%
15
s.
Furthermore,
inspired
surface
structure
tree-frog
footpads,
improved
underwater
strength.
strength
seven
times
flat
Based
effect
be
altered
thermal
stimulus.
microstructures
recovered
from
decreased
15.4%
initial
applied
fields
transfer
printing,
medical
adhesives,
mobile
robots,
etc.
ACS Applied Polymer Materials,
Journal Year:
2022,
Volume and Issue:
4(10), P. 7397 - 7407
Published: Sept. 6, 2022
Hydrogels
have
gained
the
attention
of
researchers
worldwide
and
can
be
widely
applied
for
use
in
medical
technologies
human
health
industrial
applications
such
as
robotics.
However,
producing
a
hydrogel
with
proper
mechanical
properties,
low
hysteresis
energy,
quick
shape
recovery,
long-range
strain
sensitivity
is
still
an
ongoing
development.
More
development
into
technology
could
also
lead
to
increase
effectiveness
lifespan
artificial
joint
replacements.
Our
hydrogels
incorporated
highly
sensitive
sensors
wearable
electronic
devices.
To
work
toward
developing
these
technologies,
multifunctional
dual
crosslinked
were
developed
using
lauryl
methacrylate,
acrylamide,
acid-functionalized
multiwalled
carbon
nanotubes
(A-MWCNTs).
Due
crosslinking,
synthesized
display
outstanding
performance
(high
fracture
stress,
strain,
toughness,
tensile
strength).
In
materials
recover
their
original
after
compression
maintain
hydrostaticity.
A
energy
11.57
kJ
m–3
makes
it
suitable
candidate
sensing
high
(GF
=
9.2
at
500%
strain)
monitor
different
motions
(wrist,
neck
movements,
flexion
fingers,
swallowing,
during
speaking).
Additionally,
due
its
good
cyclic
stability
was
monitored
up
300
cycles
mechanically
stable
had
fastest
response–recovery
time
less
than
130
ms
studies.
used
develop
Journal of Materials Chemistry A,
Journal Year:
2022,
Volume and Issue:
10(41), P. 21874 - 21883
Published: Jan. 1, 2022
This
paper
presents
an
octopus-tentacle
inspired
multifunctional
gradient
hydrogel
with
both
ultrafast
thermo-responsive
actuation
and
ultrahigh
conductivity
for
soft
actuators,
wearable
electronics
smart
circuit
switches.
ACS Applied Materials & Interfaces,
Journal Year:
2022,
Volume and Issue:
14(23), P. 27371 - 27382
Published: June 1, 2022
Antifatigue
fracture
performance
and
high
sensing
sensitivity
are
key
characteristics
for
hydrogel
sensors
used
in
flexible
electronic
applications.
Herein,
inspired
by
human
muscle
tissues
epidermal
skin
tissues,
an
effective
straightforward
strategy
is
proposed
to
fabricate
detecting
motion
with
antifatigue
sensitivity.
The
crystalline
regions
orientation
along
the
stretching
direction
of
cellulose
nanofiber@carbon
nanotube
nanohybrids
hydrogels
provide
(the
crack
does
not
expand
after
2000
cycles,
fatigue
threshold
was
calculated
be
187
J/m2),
which
protects
from
severe
damage
during
long-term
use.
In
addition,
microstructured
surfaces
a
random
height
distribution
increase
contact
area
improve
response
weak
stimuli,
resulting
1.11
kPa–1,
18
times
higher
than
that
flat
hydrogel.
This
those
most
hydrogel-based
pressure
have
been
reported
earlier.
By
integrating
enhanced
sensitivity,
biomimetic
show
great
potential
use
future
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(6), P. 2996 - 3007
Published: Jan. 1, 2023
Stretchable
and
tough
double-network
hydrogels
mediated
by
CaCO
3
microparticles
can
be
used
to
monitor
human
motions
mild
pain
signals
at
the
wound
site.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2023,
Volume and Issue:
11(31), P. 11548 - 11558
Published: July 27, 2023
Cellulose
nanofibers
are
one
of
the
most
frequently
used
fillers
for
reinforcing
hydrogels.
The
reinforcement,
however,
is
commonly
accompanied
by
decrease
deformability.
Inspired
armor
structured
with
overall
flexible
but
locally
rigid
characteristics,
we
proposed
a
strategy
constructing
chemical
networks
bacterial
cellulose
(BC)
in
this
work
to
improve
mechanical
performance
PAM
hydrogels
borax-crosslinked
BC
were
prepared.
multiscaled,
and
different
levels
structures
play
roles.
As
networks,
crosslinked
endows
superior
stretchability
(7710%)
improves
anticutting
property
as
well
crack
growth
resistance.
crosslinks
composed
boronic
ester
bonds
act
"sacrificial
bonds",
improving
fatigue
resistance
cyclic
tensile
large
strain
(500%).
strength
also
significantly
enhanced
due
reinforcement
role
nanofibers.
Moreover,
remained
sodium
ions
borate
give
good
conductivity
decreased
freezing
point.
Accordingly,
as-prepared
sensor
has
sensitivity
(Gauge
factor
10.1
stretching)
satisfactory
environmental
adaptability.
This
proposes
an
effective
structural
regulation
cellulosic
particle-containing
hydrogel
performance.
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(2), P. 2693 - 2704
Published: Jan. 6, 2023
Facile
surgical
delivery
and
stable
fixation
of
synthetic
scaffolds
play
roles
just
as
critically
degradability
bioactivity
in
ensuring
successful
scaffold-guided
tissue
regeneration.
Properly
engineered
shape
memory
polymers
(SMPs)
may
meet
these
challenges.
Polyhedral
oligomeric
silsesquioxanes
(POSSs)
can
be
covalently
integrated
with
urethane-crosslinked
polylactide
(PLA)
to
give
high-strength,
degradable
SMPs
around
physiological
temperatures.
To
explore
their
potential
for
guided
bone
regeneration,
here
we
tune
hydrophilicity,
degradability,
cytocompatibility,
osteoconductivity/osteoinductivity
by
crosslinking
star-branched
POSS-PLA
hydrophilic
polyethylene
glycol
diisocyanates
different
lengths
up
60
wt
%
hydroxyapatite
(HA).
The
composites
exhibit
high
compliance,
toughness,
gigapascal
storage
moduli,
excellent
recovery
(>95%)
at
safe
triggering
Water
swelling
ratios
hydrolytic
degradation
rates
positively
correlated
the
crosslinker
lengths,
while
negative
impact
on
proliferation
osteogenesis
marrow
stromal
cells
was
mitigated
HA
incorporation.
Macroporous
tailored
a
rat
femoral
segmental
defect
were
fabricated,
ability
stably
retain
sustainedly
release
recombinant
osteogenic
morphogenetic
protein-2
support
cell
attachment
demonstrated.
These
properties
combined
make
amphiphilic
osteoconductive
promising
candidates
next-generation
grafts.
Journal of Materials Chemistry C,
Journal Year:
2023,
Volume and Issue:
11(5), P. 1908 - 1918
Published: Jan. 1, 2023
Here
we
reported
a
novel
ultrasound-induced
polymerization
to
achieve
polyacrylamide–sodium
alginate
(SA)
dual
network
hydrogel
via
redox
reaction
with
MXene
(Ti
3
C
2
)
as
reductant
and
potassium
persulfate
(KPS)
an
oxidant.
