Materials,
Год журнала:
2024,
Номер
17(8), С. 1816 - 1816
Опубликована: Апрель 15, 2024
Hydrogels,
versatile
materials
used
in
various
applications
such
as
medicine,
possess
properties
crucial
for
their
specific
applications,
significantly
influenced
by
preparation
methods.
This
study
synthesized
18
different
types
of
hydrogels
using
sodium
alginate
(SA)
and
two
molecular
weights
polyvinyl
alcohol
(PVA).
Crosslinking
agents
aqueous
solutions
calcium
(Ca2+)
copper
(Cu2+)
ions
these
boric
acid
were
utilized.
The
subjected
to
compression
strength
tests
drying
kinetics
analysis.
Additionally,
six
hydrogel
variants
containing
larger
PVA
particles
underwent
Fourier-transform
infrared
spectroscopy
(FTIR)
thermogravimetric
analysis
(TGA)
post-drying.
Some
samples
lyophilized,
surface
morphology
was
examined
scanning
electron
microscopy
(SEM).
results
indicate
that
the
choice
crosslinking
method
impacts
physicochemical
hydrogels.
with
higher
concentrations
enhanced
mechanical
thermal
stability.
Conversely,
instead
resulted
slower
reduced
Notably,
employing
a
agent
heavier
molecules
led
considerable
improvements
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Май 14, 2024
A
lightweight
flexible
thermally
stable
composite
is
fabricated
by
combining
silica
nanofiber
membranes
(SNM)
with
MXene@c-MWCNT
hybrid
film.
The
SNM
outstanding
thermal
insulation
are
prepared
from
tetraethyl
orthosilicate
hydrolysis
and
condensation
electrospinning
high-temperature
calcination;
the
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(16), С. 9371 - 9399
Опубликована: Янв. 1, 2024
We
present
a
comprehensive
review
of
the
recent
research
advances
in
field
sensors
based
on
hydrogels
with
nanofillers.
The
characteristics
and
design
strategies
nanofillers
are
highlighted
multiple
properties
conductive
nanocomposite
described.
Journal of Material Science and Technology,
Год журнала:
2024,
Номер
203, С. 201 - 210
Опубликована: Апрель 12, 2024
Flexible
supercapacitors
with
high
mechanical
strength,
excellent
flexibility,
and
performance
are
highly
desired
to
meet
the
increasing
demands
of
flexible
electronics.
However,
trade-off
between
electrochemical
properties
remains
challenging.
In
this
context,
an
interface-engineered
strategy
approach
was
proposed
construct
polylactic
acid
(PLA)/polyaniline
(PANI)/MXene
film
(PPM)
electrodes
for
supercapacitor
applications.
PPM
electrode,
porous
PLA
prepared
from
nonsolvent-induced-phase-separation
method
served
as
ideal
substrate,
providing
flexibility
whereas
PANI
coupling
agent,
enhanced
interfacial
strength
electroactive
MXene
that
firmly
anchored
deposited
on
through
a
facile
layer-by-layer
dip
coating
method.
The
tensile
at
break,
elongation
toughness
53.09
MPa,
11.09%,
4.12
MJ/m3,
respectively,
much
higher
than
those
pure
(29.36
4.62%,
0.75
MJ/m3).
At
optimum
mass
loading
density
3
mg
cm−2
MXene,
fabricated
PPM3
electrode
achieved
specific
capacitance
290.8
F
g−1
current
1
A
in
three-electrode
setup,
approximately
1.5
times
190.8
MXene.
Meanwhile,
symmetric
all-solid-state
based
delivers
193.7
0.25
g−1,
corresponding
energy
9.3
Wh
kg−1
power
291.3
W
kg−1.
SC
retains
86%
its
original
even
bent
120°
also
possesses
fire-retardant
ability,
demonstrating
great
potential
safe
wearable
Polymers,
Год журнала:
2024,
Номер
16(19), С. 2755 - 2755
Опубликована: Сен. 29, 2024
Polyvinyl
alcohol
(PVA)-based
hydrogels
have
attracted
significant
attention
due
to
their
excellent
biocompatibility,
tunable
mechanical
properties,
and
ability
form
stable
three-dimensional
networks.
This
comprehensive
review
explores
the
recent
advancements
in
PVA-based
hydrogels,
focusing
on
unique
fabrication
strategies,
multifunctional
applications.
Firstly,
it
discusses
various
facile
synthesis
techniques,
including
freeze/thaw
cycles,
chemical
cross-linking,
enhancement
which
led
enhanced
strength,
elasticity,
responsiveness
external
stimuli.
These
improvements
expanded
applicability
of
critical
areas
such
as
biomedical,
environmental
treatment,
flexible
electronics,
civil
engineering,
well
other
emerging
Additionally,
integration
smart
functionalities,
self-healing
capabilities
multi-responsiveness,
is
also
examined.
Despite
progress,
challenges
remain,
optimizing
stability
under
varying
conditions
addressing
potential
toxicity
cross-linkers.
The
concludes
by
outlining
future
perspectives,
emphasizing
fields
like
regenerative
medicine,
sustainability,
advanced
manufacturing.
It
underscores
importance
interdisciplinary
collaboration
realizing
full
these
versatile
materials
address
pressing
societal
challenges.
Journal of Polymer Science,
Год журнала:
2024,
Номер
62(20), С. 4599 - 4611
Опубликована: Июль 19, 2024
Abstract
As
a
soft
material
with
biocompatibility
and
stimulation
response,
ionic
conductive
hydrogel‐based
wearable
strain
sensors
show
great
potential
across
wide
spectrum
of
engineering
disciplines,
but
their
mechanical
toughness
is
limited
in
practical
applications.
In
this
study,
freeze‐thawing
techniques
were
utilized
to
fabricate
double‐network
hydrogels
poly(vinyl
alcohol)/polyacrylamide
(PVA/PAM)
both
covalent
physical
cross‐linking
networks.
These
demonstrate
excellent
performance,
an
elongation
at
break
2253%
tensile
strength
268.2
kPa.
Simultaneously,
they
also
display
high
sensitivity
(Gage
factor,
GF
=
2.32
0%–200%
strain),
achieve
rapid
response
time
368
ms
without
the
addition
extra
fillers
or
ions,
stable
signal
transmission
even
after
multiple
cycles,
fast
human
motion
detection.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(9), С. 11914 - 11929
Опубликована: Фев. 21, 2024
Conductive
hydrogels
have
shown
promising
application
prospects
in
the
field
of
flexible
sensors,
but
they
often
suffer
from
poor
mechanical
properties,
low
sensitivity,
and
lack
frost
resistance.
Herein,
we
report
a
tough,
highly
sensitive,
antifreeze
strain
sensor
assembled
conductive
organohydrogel
composed
dual-cross-linked
polyacrylamide
poly(vinyl
alcohol)
(PVA)
network,
as
well
MXene
nanosheets
nanofillers
poly(3,4-ethylenedioxythiophene)-doped
poly(styrenesulfonate)
(PEDOT/PSS)
main
conducting
component
(PPMP-OH
organohydrogel).
The
tensile
strength
toughness
PPMP-OH
had
been
greatly
enhanced
by
due
to
reinforcement
nanosheets,
various
strong
noncovalent
interactions
formed
organohydrogels.
PPM1P-OH
organohydrogels
showed
1.48
MPa
at
772%
5.59
MJ/m3.
Moreover,
conductivity
strain-sensing
performance
were
significantly
improved
PEDOT/PSS,
which
can
form
hydrogen
bonds
with
PVA
electrostatic
MXene.
This
was
beneficial
for
constructing
uniformly
distributed
stable
3D
network
helped
obtain
strain-dependent
resistance
PPMP-OH.
sensors
PPMP1-OH
exhibited
high
sensitivity
5.16,
wide
range
detectable
strains
up
500%,
short
response
time
122
ms,
effectively
detect
physiological
activities
human
body
stability.
In
addition,
corresponding
pressure
array
also
identifying
magnitude
position.
Journal of Food Measurement & Characterization,
Год журнала:
2024,
Номер
18(8), С. 6843 - 6857
Опубликована: Июнь 21, 2024
Abstract
Non-alcoholic
fatty
liver
disease
is
a
prevalent
chronic
metabolic
condition,
for
which
no
approved
medications
are
available.
As
condiment
and
traditional
Chinese
medicine,
ginger
can
be
useful
in
reducing
the
symptoms
of
non-alcoholic
disease.
Although
its
active
ingredients
mechanisms
action
unknown,
there
lack
research
on
them.
The
purpose
this
study
to
prepare
magnetite
(Fe
3
O
4
)@Stearoyl-CoA
desaturase
1
(SCD1)
materials
analyze
them
using
ultra-high
performance
liquid-chromatography-mass
spectrometry
(UPLC-MS)
rapid
screening
potential
inhibitors
SCD1
ginger.
Based
analysis,
it
has
been
shown
that
primary
components
bind
directly
gingerols,
with
10-gingerol
having
greater
affinity
binding
than
8-gingerol
6-gingerol.
Moreover,
further
studies
indicated
free
acids
(FFA)-induced
lipid
accumulation
improved
by
class
compounds
normal
human
hepatocytes
(THLE-3),
being
most
effective
compound.
This
provides
new
insight
into
mechanism,
contributes
improvement
(NAFLD)
provide
support
use
treatment
NAFLD.
