Journal of Composites Science,
Год журнала:
2024,
Номер
8(10), С. 408 - 408
Опубликована: Окт. 4, 2024
This
paper
aimed
to
evaluate
the
effects
of
different
preparation
parameters,
including
agitation
speed,
time,
and
chilling
temperature,
on
structural
mechanical
properties
a
novel
gelatin/elastin/sodium
hyaluronate
tissue
engineering
scaffold,
recently
developed
by
our
research
group.
Fabricated
using
combination
foaming
freeze-drying
techniques,
scaffolds
were
assessed
understand
how
these
parameters
influence
their
morphology,
internal
microstructure,
porosity,
properties,
degradation
behavior.
The
fabrication
process
used
in
this
study
involved
preparing
homogeneous
aqueous
solution
containing
8%
gelatin,
2%
elastin,
0.5%
sodium
(w/v),
which
was
then
subjected
at
speeds
500,
1000,
1500
rpm
for
durations
5,
15,
25
min.
mixture
subsequently
frozen
−20
°C
−80
°C,
followed
cross-linking.
Morphological
analyses
laser
microscopy
scanning
electron
(SEM)
demonstrated
that
had
pore
sizes
ranging
from
100
300
µm,
are
conducive
effective
cell
interaction
regeneration.
confirmed
efficacy
combined
method
creating
highly
interconnected
porous
structures.
Our
findings
indicated
temperature
slightly
influenced
size.
In
contrast,
higher
longer
duration
times
led
increased
porosity
rate
but
decreased
modulus.
Mathematical
estimators
compressive
modulus
statistical
analysis
parameters.
validated
experimentally,
with
error
between
estimated
experimental
values
being
less
than
6%
21%
Advanced Engineering Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 29, 2025
Over
the
past
two
decades,
remarkable
advancements
have
been
achieved
in
stimulus‐responsive
shape‐memory
polymers
(SMPs),
which
exhibit
desirable
properties
such
as
characteristics,
deformability,
and
biocompatibility,
while
responding
to
external
stimuli.
The
development
of
polymer
composites
(SMPCs)
leads
high
recovery
forces
novel
functionalities,
including
electrical
actuation,
magnetic
biocompatibility.
enhanced
remotely
controllable
functionality
further
expand
application
SMPs
biomedical
areas,
surgical
applications
for
replacing
handheld
instruments
drug
delivery
systems.
In
this
review,
device
SMPCs
are
focused
on
their
recent
bone
tissue
scaffolds,
lumen
stents,
carriers
examined.
Furthermore,
bottlenecks
challenges
encountered
by
devices
elucidated.
future
trend
is
also
discussed,
aiming
provide
valuable
insights
broadening
fields.
Materials Research Express,
Год журнала:
2025,
Номер
12(5), С. 055304 - 055304
Опубликована: Май 1, 2025
Abstract
The
research
explores
mechanical
behavior
and
dynamic
responses
of
carbon
fiber-reinforced
polyethylene
terephthalate
glycol
(CF-PETG)
composites
which
were
manufactured
through
Fused
Filament
Fabrication
(FFF)
additive
manufacturing.
ASTM-standard
PETG
specimens
reinforced
with
10%
as
well
20%
30%
fibre
underwent
tensile
strength
testing
modal
analysis
while
FEA
validated
the
results.
A
FlashForge
FFF
3D
printer
produced
printed
samples
variations
raster
angle
positions
(0°,
90°,
±
45°)
along
nozzle
temperature
levels
ranging
from
250
°C
to
320
layer
thickness
ranges
0.1
mm
0.35
mm.
CF-PETG
had
a
60
MPa
25%
increase
compared
pure
experiencing
Young’s
modulus
rise
2.3
GPa
3.8
GPa.
natural
frequency
measurement
impulse
hammer
accelerometer
revealed
that
clamped-free-end
(CFE)
clamped-closed-end
(CCE)
evaluation
both
displayed
18%
higher
readings
for
respectively.
significant
fiber-matrix
affinity
decreased
pores
confirmed
FESEM
microscopy
results
whereas
computational
models
only
exhibited
slight
deviations
below
experimental
findings.
preliminary
study
shows
enhances
properties
also
improves
dynamical
because
its
potential
aerospace
automotive
market
applications
researchers
should
focus
on
thermal
stability
better
fiber
dispersion
techniques
in
upcoming
work.
Polymer-Plastics Technology and Materials,
Год журнала:
2024,
Номер
64(1), С. 88 - 104
Опубликована: Авг. 8, 2024
This
state-of-the-art
overview
highlights
the
significance
of
high
performance
shape
memory
polymer/nanodiamond
nanocomposites.
Nanodiamond
reinforced
polymeric
nanocomposites
have
been
designed
and
advantageously
studied
for
design,
microstructure,
physical
properties,
structure–property
relation/phenomenon,
effects,
possible
technical
advancements.
filled
polymer
matrices
effects
include
polyesters,
polyurethane,
poly(N-isopropylacrylamide),
epoxy,
polyaniline,
chitosan,
etc.
Addition
nanodiamond
especially
functional
nanoparticles
may
develop
and/or
covalent
interactions
with
to
form
interlinking/cross-linking
network
responsible
active
fixing/recovery
behavior.
Noteworthy
thermo-responsive,
electroactive,
photoactive,
photothermal,
magnetic
sensitive
observed.
Application
areas
observed
so
far
are
smart
strain
sensing
wearable
electronics,
antibacterial
biosensing,
civil
engineering
related
areas.
