Journal of Applied Polymer Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 28, 2024
ABSTRACT
The
conventional
preformed
particle
gel
(PPG)
has
certain
problems
of
relatively
poor
strength
and
easy
shear
crushing
after
swelling
during
the
in‐depth
conformance
control
process
in
low‐permeability
fractured
reservoirs.
Herein,
a
novel
double‐network
PPG
(DN‐CPPG)
based
on
biopolymer
(hydroxypropyl
methylcellulose,
HPMC)
hydrophobic
association
(C
16
chain)
was
synthesized
using
radical
polymerization
approach.
chemical
structure,
microscopic
morphologies,
thermal
tolerance
were
first
characterized.
Then,
property,
dynamic
viscoelasticity,
yield
stress,
creep
recovery
ability
DN‐CPPG
systematically
investigated.
results
revealed
that
exhibited
an
average
diameter
(d
50
)
approximately
27.12
μm
considerable
stability.
Furthermore,
it
displayed
superior
viscoelastic
properties,
behavior
equilibrium
compared
to
PPG.
This
attributed
synergistic
effects
newly
developed
DN
association,
resulting
tightly
crosslinking
network
strong
strength.
In
addition,
excellent
mechanical
strength,
with
higher
stress
(278
kPa)
elongation
strain
(917%)
those
(140
kPa
666%)
strain–stress
sweep
experiments.
formulated
serves
as
promising
material
for
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 7, 2025
Abstract
Eutectogels,
a
family
of
emerging
materials,
integrate
the
characteristics
deep
eutectic
solvents
(DES)
and
gels,
presenting
unique
application
potential
in
biomedical
engineering.
However,
latest
progress
eutectogels
their
applications
field
remain
to
be
summarized
refined.
This
review
first
introduces
composition
properties
generated
by
interaction
between
DES
gel
matrix.
Subsequently,
classifications
advantages
are
comprehensively
discussed
according
cross‐linked
preparation
methods,
including
physical,
chemical,
multiple
cross‐linked.
By
analyzing
eutectogels,
such
as
mechanical
performance,
thermal
properties,
conductivity,
injectability,
structure‐function
relationships,
is
overviewed.
Then,
eutectogel's
prospects
engineering
elaborated
detail,
drug
delivery
improve
stability
precise
control
release,
enhancing
curative
effects
reducing
side
effects.
Also,
functional
utilization
tissue
engineering,
biosensing,
bioadhesives,
related
domains
explored.
Finally,
existing
challenges
prospective
research
directions
delineated.
Hydrogels
have
attracted
increasing
attention
in
wearable
sensors,
but
preparing
underwater
hydrogel
sensors
with
excellent
anti-swelling
and
self-healing
properties
is
still
challenging.
Herein,
an
prepared
by
grafting
poly(acrylic
acid)
hydrophobic
lauryl
methacrylate,
as
well
constructing
a
second
network
multiple
molecular
interactions
(abbreviated
PALCF).
The
introduced
long
alkyl
chains
the
increased
cross-linking
density
of
result
swelling
ratio
only
0.04%
after
immersion
water
for
15
days.
Due
to
abundant
metal
coordination
hydrogen
bonds,
PALCF
exhibits
high
tensile
stress
0.60
MPa
efficiency
reaching
96.0%
at
60
°C
2
min.
Based
on
piezoresistive
effect,
directly
used
strain
sensor
sensitivity
(GF
=
2.24)
control
vehicles
rescue
implementation.
Furthermore,
two
self-powered
triboelectric
nanogenerator
contact
non-contact
models
are
constructed
based
hydrogels
communication,
capable
sending
out
SOS
messages
drowning
alarms
emergency.
proposed
warning
rescuing
functions
potential
use
prevention,
human-machine
interfaces,
communication
system.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 27, 2025
Abstract
Given
the
electrical
signal
transduction
capability
and
excellent
biocompatibility,
conductive
hydrogels
are
regarded
as
ideal
candidates
for
high‐performance
strain/pressure
sensors
applied
in
personalized
medicine.
However,
there
challenges
concurrent
attainment
of
flexible
hydrogel‐based
with
remarkable
conductivity,
sensitivity,
reliable
stability.
Herein,
a
synergistic
strategy
based
on
hole–bridge
structure
molecular‐crowding
effect
is
proposed
to
fabricate
multifunctional
sensor.
As‐prepared
eutectic
hydrogel
displays
comprehensive
performances
impressive
conductivity
(2.81
S
m
−1
),
boosted
mechanical
robustness
(a
tensile
strength
2.95
MPa),
environmental
tolerance
(≈79.8%
water
retention
at
50
°C
20
days;
frost
resistance
=
−45.3
°C).
Notably,
hydrogel‐derived
stretchable
sensor
effective
antibacterial
ability
exhibits
enhanced
sensitivity
(gauge
factor
4.49)
across
wide
linear
range,
supporting
monitoring
joint
movement
electrocardiographic
signals,
along
on‐demand
photothermal
treatment.
As
demonstration,
employment
efficiently
conveying
information
high‐fidelity
handwriting
recognition
investigated
assistance
machine
learning.
This
innovative
holds
high
promise
future
applications
wearable‐smart
devices
integrated
wireless
transmission
modules,
exhibiting
great
potential
personal
rehabilitation
training
healthcare
monitoring.
Pharmaceutics,
Journal Year:
2024,
Volume and Issue:
17(1), P. 4 - 4
Published: Dec. 24, 2024
Background:
Skin
ageing,
driven
predominantly
by
oxidative
stress
from
reactive
oxygen
species
(ROS)
induced
environmental
factors
like
ultraviolet
A
(UVA)
radiation,
accounts
for
approximately
80%
of
extrinsic
skin
damage.
L-glutathione
(GSH),
a
potent
antioxidant,
holds
promise
in
combating
UVA-induced
stress.
However,
its
instability
and
limited
penetration
through
the
stratum
corneum
hinder
topical
application.
This
study
introduces
novel
solid
lipid
nanoparticle
(SLN)-enriched
hydrogel
designed
to
enhance
GSH
stability,
penetration,
sustained
release
anti-ageing
applications.
Methods:
GSH-loaded
SLNs
were
prepared
via
double-emulsion
technique
optimized
using
factorial
design.
These
incorporated
into
1-3%
(w/v)
Carbopol
hydrogels
produce
semi-solid
formulation.
The
hydrogel's
characteristics,
including
morphology,
mechanical
rheological
properties,
drug
release,
antioxidant
activity,
cytotoxicity,
evaluated.
Results:
SEM
FTIR
confirmed
uniform
dispersion
within
hydrogel.
formulation
exhibited
desirable
gel
strength
(5.1
±
0.5
g),
spreadability
(33.6
1.9
g·s),
pseudoplasticity,
elasticity.
In
vitro
studies
revealed
biphasic
profile,
with
over
72
h
70%
cumulative
release.
significantly
improved
capacity,
protecting
human
fibroblasts
enhancing
cell
viability.
Stability
indicated
that
4
°C
was
optimal
storage
three
months.
Notably,
enhanced
3.7-fold.
Conclusions:
SLN-enriched
effectively
improves
delivery
efficacy,
providing
promising
platform
other
bioactive
compounds
similar
challenges.
Soft Science,
Journal Year:
2024,
Volume and Issue:
4(4)
Published: Nov. 27, 2024
The
long-term
stable
monitoring
of
brain
signals,
including
electroencephalogram
(EEG),
electrocorticogram
(ECoG)
and
local
field
potential
(LFP),
is
great
significance
for
the
fundamental
research
in
science,
artificial
intelligence
diagnosis
treatment
brain-related
disorders.
Therefore,
both
non-invasive
invasive
brain-machine
interfaces
based
on
different
materials
structures
have
been
widely
studied
due
to
their
unique
performance.
Among
these
materials,
hydrogels
emerged
as
a
promising
interface
material
signal
collection
systems
similar
mechanical
properties
biological
tissues,
excellent
biocompatibility,
strong
self-adhesive
properties,
exceptional
ionic
conductive
characteristics.
This
review
aims
provide
an
overview
recent
progress
hydrogel-based
recording
signals
with
methods.
It
expected
that
this
paper
will
serve
valuable
summary
reference
future
interface.
Journal of Applied Polymer Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 28, 2024
ABSTRACT
The
conventional
preformed
particle
gel
(PPG)
has
certain
problems
of
relatively
poor
strength
and
easy
shear
crushing
after
swelling
during
the
in‐depth
conformance
control
process
in
low‐permeability
fractured
reservoirs.
Herein,
a
novel
double‐network
PPG
(DN‐CPPG)
based
on
biopolymer
(hydroxypropyl
methylcellulose,
HPMC)
hydrophobic
association
(C
16
chain)
was
synthesized
using
radical
polymerization
approach.
chemical
structure,
microscopic
morphologies,
thermal
tolerance
were
first
characterized.
Then,
property,
dynamic
viscoelasticity,
yield
stress,
creep
recovery
ability
DN‐CPPG
systematically
investigated.
results
revealed
that
exhibited
an
average
diameter
(d
50
)
approximately
27.12
μm
considerable
stability.
Furthermore,
it
displayed
superior
viscoelastic
properties,
behavior
equilibrium
compared
to
PPG.
This
attributed
synergistic
effects
newly
developed
DN
association,
resulting
tightly
crosslinking
network
strong
strength.
In
addition,
excellent
mechanical
strength,
with
higher
stress
(278
kPa)
elongation
strain
(917%)
those
(140
kPa
666%)
strain–stress
sweep
experiments.
formulated
serves
as
promising
material
for
