Advanced Engineering Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 18, 2024
In
order
to
improve
the
corrosion
resistance
of
micro‐arc
oxidation
(MAO)
ceramic
layer
AZ31
magnesium
alloy,
a
hydrophobic
Mg–Al
layered
double
hydroxide
(LDH)
coating
was
prepared
on
its
surface
by
one‐step
hydrothermal
method.
The
microstructure
characterized
scanning
electron
microscope,
energy
disperse
spectroscopy,
X‐ray
diffractometer,
and
Fourier
transform
infrared
spectrometer.
wettability
were
studied
contact
angle
(CA)
measuring
instrument
electrochemical
workstation.
Meanwhile,
durability
evaluated
sandpaper
abrasion,
tape
peeling
immersion
test.
results
showed
that
LDH
can
be
successfully
MAO
treatment
with
alkaline
aluminum
nitrate
solution
containing
sodium
laurate.
sealed
inherent
defects
coating,
resulting
in
significantly
improved
resistance.
With
extension
abrasion
distance,
times,
time,
CA
shows
downward
trend,
gradually
changed
from
hydrophilic.
However,
after
test,
still
has
good
resistance,
current
density
lower
than
layer.
Molecules,
Год журнала:
2024,
Номер
29(22), С. 5291 - 5291
Опубликована: Ноя. 8, 2024
This
study
reports
the
successful
synthesis
of
core-shell
microparticles
utilizing
coaxial
electrospray
techniques,
with
zeolitic
imidazolate
framework-8
(ZIF-8)
encapsulating
rhodamine
B
(RhB)
in
core
and
a
phase
change
material
(PCM)
shell
composed
eutectic
mixture
lauric
acid
(LA)
stearic
(SA).
ZIF-8
is
well-recognized
for
its
pH-responsive
degradation
biocompatibility,
making
it
an
ideal
candidate
targeted
drug
delivery.
The
LA-SA
PCM
mixture,
melting
point
near
physiological
temperature
(39
°C),
enables
temperature-triggered
release,
enhancing
therapeutic
precision.
structural
properties
were
extensively
characterized
through
scanning
electron
microscopy
(SEM),
X-ray
diffraction
(XRD),
Fourier
transform
infrared
spectroscopy
(FTIR),
differential
calorimetry
(DSC),
thermogravimetric
analysis
(TGA).
Drug
release
studies
revealed
dual-stimuli
response,
where
RhB
was
significantly
influenced
by
both
pH.
Under
mildly
acidic
conditions
(pH
4.0)
at
40
°C,
rapid
complete
observed
within
120
h,
while
37
rate
notably
slower.
Specifically,
°C
79%
higher
than
confirming
sensitivity
system.
Moreover,
pH
(7.4),
minimal
occurred,
demonstrating
system's
potential
minimizing
premature
under
neutral
conditions.
approach
holds
promise
improving
outcomes
cancer
treatment
enabling
precise
control
over
response
to
localized
hyperthermia,
reducing
off-target
effects
patient
compliance.
Advanced Engineering Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 18, 2024
In
order
to
improve
the
corrosion
resistance
of
micro‐arc
oxidation
(MAO)
ceramic
layer
AZ31
magnesium
alloy,
a
hydrophobic
Mg–Al
layered
double
hydroxide
(LDH)
coating
was
prepared
on
its
surface
by
one‐step
hydrothermal
method.
The
microstructure
characterized
scanning
electron
microscope,
energy
disperse
spectroscopy,
X‐ray
diffractometer,
and
Fourier
transform
infrared
spectrometer.
wettability
were
studied
contact
angle
(CA)
measuring
instrument
electrochemical
workstation.
Meanwhile,
durability
evaluated
sandpaper
abrasion,
tape
peeling
immersion
test.
results
showed
that
LDH
can
be
successfully
MAO
treatment
with
alkaline
aluminum
nitrate
solution
containing
sodium
laurate.
sealed
inherent
defects
coating,
resulting
in
significantly
improved
resistance.
With
extension
abrasion
distance,
times,
time,
CA
shows
downward
trend,
gradually
changed
from
hydrophilic.
However,
after
test,
still
has
good
resistance,
current
density
lower
than
layer.
