Journal of Composites Science,
Год журнала:
2024,
Номер
8(7), С. 233 - 233
Опубликована: Июнь 22, 2024
The
conventional
manufacturing
chain
for
technical
ceramics
is
too
expensive
the
production
of
small
series
or
unique
parts
with
complex
designs.
Hybrid
machines
that
combine
additive
and
subtractive
processes
can
be
an
interesting
solution
to
overcome
this
technology
lock-in.
However,
despite
great
interest
in
hybrid
metallic
parts,
there
a
lack
data
literature
when
it
comes
ceramics.
purpose
paper
contribute
closing
gap.
It
first
evaluate
achievable
geometrical
tolerances
according
ISO
2768-2
as
well
surface
textures
composite
zirconia
shaped
sequentially
by
pellet
(PAM,
from
ceramic
injection
molding
feedstock)
finish
milling.
green
were
then
debinded
sintered
analyze
influence
these
steps.
Compared
initial
exhibited
shiny
smooth
surfaces
sharp
edges.
Flatness,
parallelism
perpendicularity
all
achieved
H
(fine)
class,
while
significantly
improved,
resulting
arithmetic
roughness
(Ra)
below
1.6
µm.
ACS Biomaterials Science & Engineering,
Год журнала:
2025,
Номер
11(1), С. 156 - 181
Опубликована: Янв. 2, 2025
Volumetric
additive
manufacturing
(VAM)
is
revolutionizing
the
field
of
cell
printing
by
enabling
rapid
creation
complex
three-dimensional
cellular
structures
that
mimic
natural
tissues.
This
paper
explores
advantages
and
limitations
various
VAM
techniques,
such
as
holographic
lithography,
digital
light
processing,
volumetric
projection,
while
addressing
their
suitability
across
diverse
industrial
applications.
Despite
significant
potential
VAM,
challenges
related
to
regulatory
compliance
scalability
persist,
particularly
in
context
bioprinted
In
India,
lack
clear
guidelines
intellectual
property
protections
poses
additional
hurdles
for
companies
seeking
navigate
evolving
landscape
bioprinting.
study
emphasizes
importance
collaboration
among
industry
stakeholders,
agencies,
academic
institutions
establish
tailored
frameworks
promote
innovation
ensuring
safety
efficacy.
By
bridging
gap
between
technological
advancement
oversight,
can
unlock
new
opportunities
regenerative
medicine
tissue
engineering,
transforming
patient
care
therapeutic
outcomes.
Polymers,
Год журнала:
2024,
Номер
16(18), С. 2561 - 2561
Опубликована: Сен. 10, 2024
Tremendously
negative
effects
have
been
generated
in
recent
decades
by
the
continuously
increasing
production
of
conventional
plastics
and
inadequate
management
their
waste
products.
This
demands
materials
within
a
circular
economy,
easy
to
recycle
biodegrade,
minimizing
environmental
impact
cost
competitiveness.
Bioplastics
represent
sustainable
alternative
this
scenario.
However,
replacement
must
be
addressed
considering
several
aspects
along
lifecycle,
from
bioplastic
processing
final
application
product.
In
review,
using
different
additives,
biomass
sources,
techniques
on
mechanical
thermal
behavior,
as
well
biodegradability,
bioplastics
is
discussed.
The
importance
bioplasticizers
highlighted,
besides
studying
role
surfactants,
compatibilizers,
cross-linkers,
coupling
agents,
chain
extenders.
Cellulose,
lignin,
starch,
chitosan,
composites
are
analyzed
part
non-synthetic
considered.
Throughout
study,
emphasis
use
well-established
manufacturing
processes,
such
extrusion,
injection,
compression,
or
blow
molding,
since
these
ones
that
satisfy
quality,
productivity,
requirements
for
large-scale
industrial
production.
Particular
attention
also
given
fused
deposition
modeling,
additive
technique
nowadays
not
only
used
making
prototypes,
but
it
being
integrated
into
development
parts
wide
variety
biomedical
applications.
Finally,
recyclability
commercial
discussed,
some
future
perspectives
challenges
bio-based
with
conclusion
technological
innovations,
economic
incentives,
policy
changes
could
coupled
individually
driven
solutions
mitigate
impacts
associated
plastics.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 2, 2025
Abstract
Additive
manufacturing
(AM)
has
risen
in
popularity
due
to
its
ability
produce
complex
shapes
a
material‐efficient
way.
However,
objects
with
advanced
properties,
multimaterial
strategies
are
often
employed.
This
one‐polymer‐one‐property
paradigm
significantly
slows
down
the
application
of
AM,
and
particular
fused
deposition
modeling
(FDM),
for
functional
objects.
In
this
study
advantage
pluripotency
materials
is
taken,
i.e.,
attain
different
properties
from
single
stock,
afford
mechanically
tunable
3D
printed
dynamic
thermosets
(moduli
2
MPa
–
3
GPa,
1500×
increase,
Stress
at
break
70
MPa,
35×
increase).
To
do
so,
FDM‐compatible
CO
‐derived
dissociative
polymer
networks
designed
that
undergo
reaction‐induced
phase‐separation
(DRIPS).
strategy
enables
control
size
rigid
phase
simple
post‐printing
thermal
treatment,
cascading
spatially
patterned
mechanical
properties.
showcases
new
directions
printing
communities,
deep
implications
soft
robotics
compliant
mechanics.
Ecotoxicology and Environmental Safety,
Год журнала:
2025,
Номер
293, С. 118007 - 118007
Опубликована: Март 1, 2025
The
increasing
use
of
plastic
polymers
in
3D
printing
applications
may
lead
to
human
exposure
micro-
and
nanoplastics
(MNPLs),
raising
concerns
regarding
adverse
health
consequences
such
as
cancer
induction.
Little
attention
has
been
given
MNPLs
originated
at
the
end
life
cycle
3D-printed
objects
because
mechanical
environmental
degradation
waste.
This
study
assessed
carcinogenic
potential
secondary
generated
through
cryomilling
using
validated
vitro
Bhas
42
cell
transformation
assay
(CTA).
Three-dimensional
were
printed
four
types
polycarbonate
(PC)-
polypropylene
(PP)-modified
thermoplastic
filaments,
undoped
doped
with
single-walled
carbon
nanotubes
(PC-CNT)
silver
nanoparticles
(PP-Ag),
respectively.
(<
5
µm)
following
a
three-step
top-down
process
thoroughly
characterized.
cells
treated
once
(initiation
assay)
or
repeatedly
(promotion
several
concentrations
(3.125-100
µg/mL)
mimicking
realistic
conditions,
transformed
foci
formation
was
evaluated
after
21
days.
Furthermore,
cellular
internalization
mRNA
expression
seven
genes
previously
recognized
part
predictive
early
signature
also
evaluated.
Despite
being
internalized,
none
particles
able
initiate
promote
transformation,
regardless
doping
nanomaterials.
Alternatively,
all
significantly
increased
decreased
Prl2c3
Timp4,
respectively,
under
promotion
indicating
changes
that
occur
before
foci.
These
findings
suggest
test
could
have
tumorigenic
despite
not
showing
morphological
cells.
Applied Sciences,
Год журнала:
2025,
Номер
15(8), С. 4216 - 4216
Опубликована: Апрель 11, 2025
In
recent
years,
additive
manufacturing
technologies
have
been
employed
for
ecological
projects,
especially
those
connected
with
artificial
reefs.
This
approach
brings
a
lot
of
advantages,
including
the
design
more
complex
structures,
surfaces
fitted
to
needs
water
organisms.
technology
can
effectively
support
and
engineering,
in
restoration
efforts.
The
main
aim
this
article
is
demonstrate
state
art
further
perspectives
development
coral
based
on
critical
analysis
literature,
supported
by
selected
case
studies.
describes
current
used
creation
reefs,
putting
emphasis
manufacturing,
evaluates
currently
materials,
summarizes
influence
ecosystems
through
It
also
discusses
challenges
limitations
3D
printing
reefs
as
well
presents
trends
directions.
most
important
findings
show
that
analyzed
field
promising
interdisciplinary
research
area
practical
implementations
require
collaboration
between
specialists
from
different
branches.
Polymers,
Год журнала:
2025,
Номер
17(10), С. 1336 - 1336
Опубликована: Май 14, 2025
Despite
manufacturing
firms
recognizing
the
potential
benefits
of
polymer-based
smart
materials
(PBSM)
in
additive
(AM),
their
large-scale
integration
remains
limited.
As
strive
toward
net-zero
emissions
(NZE)
and
sustainable
manufacturing,
integrating
PBSM
into
AM
could
be
pivotal
for
striving
to
achieve
NZE
more
production.
In
this
regard,
study
uses
a
mixed-method
approach:
systematic
literature
review
(SLR)
address
current
trends
critical
challenges
associated
with
"development,
processing,
scalability"
adoption
AM.
Further,
analyzes
100
responses
from
Indian
firms,
employing
exploratory
factor
analysis
(EFA)
develop
framework.
This
framework
is
further
validated
by
determining
priority
order
using
Combined
Compromise
Solution
(CoCoSo)
through
case
study.
The
outcome
highlights
that
end-of-life
management
lack
standardization
are
most
restricting
research
provides
valuable
insights
industry
professionals
academia,
guiding
strategic
roadmap
manufacturing.
With
transformation,
industries
can
align
global
targets
contribute
India's
economy
goal
2070.
Materials,
Год журнала:
2024,
Номер
17(15), С. 3839 - 3839
Опубликована: Авг. 2, 2024
In
this
work,
the
authors
investigated
impact
of
extrusion-based
printing
process
on
structural
characteristics
bio-based
resins
through
rheological
measurements.
Two
commercially
available
filaments
made
from
unfilled
and
wood-filled
polylactide
(PLA)
polymers
were
considered.
Three-dimensional
specimens
prepared
by
these
under
various
operating
conditions,
i.e.,
changing
extruder
temperature
rate,
examined
using
time
sweep
tests.
Specific
cycle
testing
was
conducted
pelletized
to
simulate
changes
in
process.
The
unprocessed
materials,
terms
storage
(G')
loss
(G″)
moduli,
found
be
slightly
affected
changes.
For
a
pure
polymer,
G'
slope
at
low
frequency
decreased
over
time,
showing
that
polymer
chains
evolved
higher
lower
molecular
weight.
rose
emphasizing
formation
percolated
network
structured
filler
within
matrix.
On
other
side,
parameters
both
materials
strongly
impacted
extrusion
related
conditions.
At
nozzle
temperatures
(200
°C),
decreasing
speed,
G″
curves
became
increasingly
different
with
respect
resin;
whereas
(220
influence
speed
insignificant,
all
(albeit
distant
those
matrix)
mainly
overlapped.
Considerations
degradation
kinetics
during
also
provided
fitting
experimental
data
complex
viscosity
linear
correlation
time.
Journal of Composites Science,
Год журнала:
2024,
Номер
8(8), С. 305 - 305
Опубликована: Авг. 5, 2024
This
study
investigated
the
effect
of
two
critical
variables
for
environmental
process
sustainability,
i.e.,
extruder
temperature
and
printing
rate,
on
thermomechanical
performance
accuracy
in
overall
sample
sizes,
when
bio-based
materials.
In
this
context,
3D
specimens
produced
from
basic
polylactide
(n-PLA)
wood-filled
PLA
polymer
(f-PLA)
were
realized
using
extrusion-based
additive
manufacturing
technology
(MEX)
by
varying
nozzle
temperatures
(200
°C,
210
220
°C)
speed
(from
70
mm/s
to
130
mm/s).
Dynamic
mechanical
analysis
(DMA)
was
carried
out
specimens,
providing
information
changes
storage
modulus
at
testing
30
°C
(E′30)
glass
transition
(Tg)
each
condition.
Measurements
sizes
allowed
precision
considerations
as
a
function
processing
speed.
The
results
revealed
similar
trends
E′30
printed
fixed
n-PLA
f-PLA.
Infrared
spectroscopy
performed
samples
unextruded
material
attest
potential
degradation
under
various
operating
conditions.
Finally,
images
surface
verify
homogeneity
diameter
extruded
layer–layer
contact
interface.
