Journal of Research Updates in Polymer Science,
Journal Year:
2024,
Volume and Issue:
13, P. 226 - 233
Published: Nov. 8, 2024
Nowadays
Fused
Deposition
Modeling,
a
widely
utilized
additive
manufacturing
technology,
is
significantly
transforming
as
modern
production
processes.
Beyond
basic
uses
to
it
role
in
sustainability,
Modeling
offers
processing
potential
for
implanting
circular
economy
by
reducing
virgin
materials
consumption
and
enhance
the
integration
of
waste
food
sustainable
3D
printing.
This
research
paper
investigated
new
composite
based
on
spent
coffee
grounds.
In
addition,
PLA
SCG
at
various
contents
(0,
3,
5,
10,
15
wt%)
were
dried
premixed,
then
processed
into
PLA/SCG
pellets
using
twin-screw
extrusion.
These
successfully
converted
filaments
subsequently
used
The
effect
grounds
composites
was
via
physical
mechanical
analysis
printed
samples.
Regarding
density
measurements,
results
revealed
that
adding
up
5
wt%
increased
while
further
additions
led
decrease
which
due
printing
parameters
such
extrusion
temperature
nozzle
diameter.
Considering
properties,
Young’s
modulus
once
content
reached
3
decreased.
other
hand,
there
no
enhancement
tensile
strength
elongation
break
corroborating
with
measurements.
mainly
contributed
changes
properties
caused
parameters.
study
demonstrates
can
be
filler
environmentally
friendly
printing,
maximum
wt%.
approach
not
only
promotes
reuse
but
also
reduces
cost
traditional
filaments.
Business Strategy and the Environment,
Journal Year:
2023,
Volume and Issue:
32(8), P. 6029 - 6046
Published: June 6, 2023
Abstract
This
study
employs
dynamic
capability
view
theory
to
comprehend
the
interplay
between
big
data
analytics
(BDAC),
responsible
research
and
innovation
(RRI)
circular
economy
practices
(CEPs)
as
an
execution
strategy
for
improving
environmental
performance.
The
uses
partial
least
square
structural
equation
modelling
analyse
primary
survey
collected
from
326
manufacturers.
results
indicate
that
BDAC,
RRI
CEPs
favourably
affect
Notably,
emerges
most
influential
factor
among
three.
Furthermore,
findings
suggest
implementing
serves
a
mediator
influence
of
BDAC
on
Surprisingly,
finds
moderating
impact
resource
commitment
is
not
statistically
significant
in
any
three
pairwise
interactions
involving
with
respect
have
various
intriguing
implications
how
manufacturers
can
enhance
their
strategies
achieve
better
performance,
representing
noteworthy
contribution
foundational
view.
Finally,
these
also
provide
valuable
insights
managers,
enabling
deeper
understanding
determinants
contribute
deploying
performance
within
manufacturing
setting.
Electrochemical Energy Reviews,
Journal Year:
2024,
Volume and Issue:
7(1)
Published: Jan. 15, 2024
Abstract
Biomass
is
a
low-cost,
abundant
and
renewable
resource
that
can
be
used
to
manufacture
porous
carbon-based
materials
for
variety
of
applications.
Different
mesoporous
carbon
supports
obtained
from
the
various
synthetic
approaches
are
aimed
at
increasing
specific
surface
area
functionalization.
Currently,
most
biomass
energy
recovery.
The
circular
economy
approach
could
lead
development
cheap
sustainable
materials,
turning
wastes
into
precious
resource.
In
this
review,
we
provide
recent
advances
in
field
electrochemistry
derived
biomass,
which
offers
wider
applications
proton
exchange
membrane
fuel
cells
(PEMFCs),
anion
(AEMFCs)
Zn-air
batteries
(ZABs).
focus
on
understanding
required
properties
role
pathways
platinum
group
metal
(PGM)
free
electrocatalysts.
promising
evaluated
towards
oxygen
reduction
reaction
(ORR)
PEMFC,
AEMFC,
ZAB.
results
achieved
showed
expected
performances
these
conversion
devices
still
lack
deployment
practice,
especially
if
compared
with
commercially
available
PGM-free
This
review
article
provides
insights
how
improve
actual
electrocatalytic
activity
biomass-derived
materials.
Graphical
Cleaner Materials,
Journal Year:
2023,
Volume and Issue:
9, P. 100207 - 100207
Published: Sept. 1, 2023
3D
printing
process
has
gained
significant
attention
because
of
its
ability
to
manufacture
complicated
geometries.
The
also
a
lot
potential
for
reducing
plastic
waste.
In
recent
years,
the
use
carbon
fiber
become
increasingly
popular
as
reinforcement
material
3D-printed
objects.
combination
waste
and
create
high-strength
lightweight
structures
various
applications.
This
presented
paper
reviews
advancements
in
using
waste,
focusing
specifically
on
fused
deposition
modeling
(FDM)
selective
laser
sintering
(SLS)
methods
composites.
study
highlights
important
role
materials
process,
especially
regarding
difficulties
producing
non-recyclable
plastics.
composite
processes
industries
that
utilize
these
technologies.
One
key
aspects
article
is
exploration
impact
environment
through
recycling
shall
be
helpful
demonstration
turning
into
durable,
functional
objects
while
minimizing
environmental
impact.
Materials Today Sustainability,
Journal Year:
2023,
Volume and Issue:
25, P. 100636 - 100636
Published: Dec. 10, 2023
Since
the
take-make-dispose
model
is
leading
to
significant
waste
production
and
environmental
impact,
circular
economy
models
have
been
spreading
reduce
resource
depletion,
rethinking
existing
cycles.
Plastic
created
economic
concerns,
requiring
new
recycling
methods
strategies
preserve
resources.
This
practice
plays
a
key
role
in
extrusion-based
additive
manufacturing,
converting
into
recycled
feedstock.
Large-format
manufacturing
represents
promising
way
scale
up
with
granulated
polymer
feedstock,
especially
considering
popular
materials,
i.e.,
PLA.
However,
thermomechanical
degradation
affects
quality
of
this
secondary
raw
material,
these
effects
on
large-format
systems
are
scarcely
studied.
work
investigates
thermal,
rheological,
mechanical
properties
PLA
feedstock
for
after
multiple
processes,
six.
The
effect
material
from
processes
was
assessed
through
Gel
Permeation
Chromatography,
Differential
Scanning
Calorimetry,
flow
stress
ramp
tests,
tensile
colorimetry.
Some
3D
printed
parts
were
fabricated
assess
overall
process,
including
pieces
potential
applications.
Lower
found
compared
desktop-size
printers,
mainly
by
cutting
reprocessing
steps
produce
making
filaments.
Recycled
granulate
alternative
virgin
pellets
applications
real-world
contexts.
[copyright
information
be
updated
process].
ACS Omega,
Journal Year:
2024,
Volume and Issue:
9(6), P. 6423 - 6431
Published: Feb. 1, 2024
Food
waste
and
loss
generate
significant
such
as
spent
coffee
grounds
(SCGs)
from
consumption.
These
byproducts
can
be
valorized
by
following
circular
economy
bioeconomy
principles,
e.g.,
using
SCGs
in
polymer-based
composites
for
3D
printing.
Although
desktop-size
material
extrusion
additive
manufacturing
is
increasingly
adopted
biomass-polymer-based
composites,
the
potential
of
large-format
direct
printing
systems
remains
unexplored.
This
work
investigated
thermal,
rheological,
mechanical
properties
PLA/SCG
applications
with
a
pellet
printer.
The
formulations
exhibit
minimal
degradation
at
typical
temperatures
PLA,
i.e.,
∼190
°C,
limited
effects
on
crystallinity
increasing
SCG
weight
percentage.
decrease
viscosity
due
to
improves
printability
layer
adhesion,
confirmed
tensile
test
results,
higher
ultimate
strength
elongation
break
values
compared
those
state-of-the-art
values.
Using
feedstocks
contributes
limiting
thermomechanical
reducing
raw
processing,
avoiding
filament
extrusion.
PLA/SCGs
was
demonstrated
through
printed
complex
parts
nonplanar
slicing
techniques,
including
large-scale
furniture
product,
validating
printers
scaling
up
use
biomass-filled
polymers.
Macromolecular Rapid Communications,
Journal Year:
2024,
Volume and Issue:
45(17)
Published: May 31, 2024
Abstract
This
review
aims
to
present
the
different
approaches
lessen
environmental
impact
of
extrusion‐based
additive
manufacturing
(MEX)
process
thermoplastic‐based
resins
and
protect
ecosystem.
The
benefits
drawbacks
each
alternative,
including
use
biomaterials
or
recycled
materials
as
feedstock,
energy
efficiency,
polluting
emissions
reduction,
have
been
examined.
First,
technological
option
using
a
pellet‐fed
printer
was
compared
filament‐fed
printer.
Then,
common
biopolymers
utilized
in
MEX
applications
are
discussed,
along
with
methods
for
improving
mechanical
properties
associated
printed
products.
introduction
natural
fillers
thermoplastic
biocomposite
filaments
proposed
improve
specific
performance
items,
highlighting
numerous
challenges
related
their
extrusion.
Various
polymers
derived
from
recycling
presented
feeding
raw
printers
reduce
waste
accumulation,
showing
inferior
qualities
resulting
goods
when
products
made
virgin
materials.
Finally,
consumption
released
into
atmosphere
during
printing
potential
both
aspects
be
controlled
through
material
selection
operating
conditions.
Polymer Composites,
Journal Year:
2024,
Volume and Issue:
45(8), P. 6741 - 6770
Published: Feb. 29, 2024
Abstract
Solid
composites
used
in
material
extrusion
additive
manufacturing
have
experienced
considerable
expansion
over
the
past
5
years,
incorporating
functional
properties
into
3D‐printed
objects.
This
paper
presents
a
systematic
review
that
aims
to:
(I)
analyze
current
state
of
development
field;
(II)
quantify
and
categorize
adopted
polymeric
matrices,
reinforcing
materials,
feedstock
shapes,
characterization
strategies,
mechanisms;
(III)
identify
applications,
limitations,
trends
for
future
research.
The
PRISMA
statement
was
followed
databases
Scopus,
Web
Science,
PubMed
were
consulted.
Among
116
included
studies,
use
customized
filaments
surpassed
commercially
available
ones,
with
particulate
matter
being
most
common
form
filler
when
melt‐mixed
polymer.
Polyamide
is
widely
matrix
(30.3%),
by
PLA
(22.0%)
ABS
(17.4%).
In
terms
reinforcements,
carbon
fiber
(32.4%),
glass
(12.5%),
ceramics
(12.5%)
compose
podium
as
frequently
used,
nanofillers
receiving
increasing
attention.
conducted
analysis,
no
standardized
protocols
identified
clearly
encompassed
entire
process
from
formulation
to
technical
prototype
fabrication.
At
last,
recycling,
exploration
biodegradable
4D
printing
main
opportunities
Highlights
Reinforced
polymers
enable
enhancement
parts.
Composite
usually
formulated
mixed
before
printing.
3D
printers
filament‐
or
screw‐based
mechanisms
been
used.
Mechanical
morphological
analyses
are
characterization.
No
applications
employed
real‐world
scenarios.
Materials Today Sustainability,
Journal Year:
2024,
Volume and Issue:
26, P. 100780 - 100780
Published: March 29, 2024
In
the
context
of
seeking
sustainable
solutions
for
developing
innovative
materials
and
products
by
an
efficient
use
natural
resources
recycling
waste,
with
increasing
focus
on
circular
economy
mitigating
environmental
impact,
presents
research
aims
to
biomass
agricultural
residues
as
raw
bio
composite
production.
Specifically,
valorizing
European
hazelnut
waste
a
unique
opportunity
devise
formulations
3D
printing,
leveraging
both
mechanical
properties
aesthetic
appeal
lignocellulosic
composites.
detail,
this
work
aimed
at
investigation
new
poly(lactic
acid)
(PLA)/Hazelnut
Shell
Powder
printing
design
applications
exploiting
woody
effect
these
A
pellet
printer
was
used
bypass
filament
Three
different
Hazelnut
content
(from
10
up
30
wt%)
were
investigated
experiment
carried
out
generate
response
surfaces
able
identify
best
conditions
optimize
flexural,
tensile
impact
properties.
Finally,
three
raster
angles
(0°,
±45°
90°)
investigated.
The
configuration
was:
220
°C
nozzle
temperature,
25
mm/s
speed
angle.
With
configuration,
prototypes
ornamental
pots,
jewellery
home
furniture
produced
demonstrators.
