ChemSusChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 14, 2024
Bioplastics
possess
the
potential
to
foster
a
sustainable
circular
plastic
economy,
but
their
end-of-life
is
still
challenging.
To
sustainably
overcome
this
problem,
work
proposes
hydrothermal
carbonization
(HTC)
of
residual
bioplastics
as
an
alternative
green
path.
The
focus
on
cellulose
acetate
-
bioplastic
used
for
eyewear,
cigarette
filters
and
other
applications
showing
proof
concept
chemistry
behind
conversion,
including
reaction
kinetics
model.
HTC
pure
commercial
acetates
was
assessed
under
various
operating
conditions
(180-250
°C
0-6
h),
with
analyses
solid
liquid
products.
Results
show
peculiar
behavior
these
substrates
HTC.
At
190-210
°C,
materials
almost
completely
dissolve
into
phase,
forming
5-hydroxymethylfurfural
organic
acids.
Above
220
intermediates
repolymerize
carbon-rich
microspheres
(secondary
char),
achieving
yields
up
23
%,
while
itaconic
citric
acid
form.
A
comparison
additives
demonstrates
that
amounts
acetyl
groups
derivatives
plasticizers
are
crucial
in
catalyzing
reactions,
creating
unique
environment
capable
leading
total
rearrangement
acetates.
can
thus
represent
cornerstone
establishing
biorefinery
acetate.
Polymers,
Journal Year:
2025,
Volume and Issue:
17(8), P. 1053 - 1053
Published: April 14, 2025
According
to
the
literature,
mainly
in
relation
mixed
cellulose
esters
(MCEs)
with
two
types
of
acyl
group,
solubility
parameter
(SP)
is
a
measure
certain
physical
properties
MCE
that
helpful
for
property
prediction;
contrary
expectations,
it
has
been
implied
by
different
studies
simple
(SCEs)
only
one
type
group
do
not
altogether
follow
empirical
relationship.
In
this
study,
and
SCE
were
systematically
prepared
verify
SP—property
It
was
revealed
correlation
between
SP
exists
MCE.
Thermal
analysis
MCEs
possess
remarkable
unidentified
endothermic
transition
depending
on
ratio
groups,
suggesting
formation
such
stable
structure
could
contribute
difference
SCE.
also
that,
even
MCE,
relationship
involving
varies
from
group;
there
no
universal
spite
aforementioned
limitation,
verified
be
useful
prediction
We
demonstrated
Fox
equation
Voigt
model
are
prediction.
Journal of Manufacturing and Materials Processing,
Journal Year:
2024,
Volume and Issue:
8(3), P. 91 - 91
Published: April 29, 2024
Laser-assisted
automated
tape
placement
systems
are
currently
the
state
of
art
regarding
thermoplastic
placement.
Flashlamp
heating
rather
new
in
this
field
application
and
offer
high
energy
density
with
low
safety
requirements
moderate
costs
compared
to
laser-assisted
systems.
In
study,
effect
processing
parameters
on
interlaminar
bonding
carbon
fiber-reinforced
polyamide
6
tapes
is
investigated
using
a
flashlamp
system.
The
temperature
during
monitored
an
infrared
camera,
strength
characterized
by
wedge
peel
test.
quality
placed
between
210
°C
330
at
lay-up
speed
50
mm/s
investigated.
Thermogravimetric
analysis,
differential
scanning
calorimetry,
micrographs
used
investigate
material
properties
effects
conditions
thermophysical
geometric
tape.
No
significant
changes
or
were
found.
Moisture
within
staining
quartz
guides
system
have
influence
strength.
highest
dried
was
found
around
°C.
ACS Applied Polymer Materials,
Journal Year:
2024,
Volume and Issue:
6(15), P. 8997 - 9007
Published: July 25, 2024
Eco-friendly
blends
of
polylactic
acid
(PLA)/polyhydroxybutyrate
(PHB)
have
been
developed
with
the
use
a
sustainable
plasticizer,
namely
epoxidized
soybean
oil
methyl
ester
(ESOME).
While
PLA,
PHB,
and
their
are
highly
valued
for
bio-origin
compostability
at
end
lifecycle,
enhancing
flexibility
improved
processability
broadening
range
applications
is
an
ongoing
challenge.
For
this
reason,
we
present
formulation
PLA/PHB
varying
ESOME
concentrations,
processed
by
extrusion
compression
molding.
The
structural,
chemical,
rheological,
morphological
thermal
properties
without
thoroughly
investigated
through
complementary
techniques.
addition
causes
remarkable
increase
in
overall
mechanical
performance
blends,
as
well
significant
enhancement
oxygen
barrier
properties.
Migration
analysis
to
dry
food
simulant
reveals
that
it
below
acceptable
limit,
up
7.5%
wt
%
ESOME.
Based
on
ranking
all
prepared
PLA/PHB/ESOME
respect
using
TOPSIS
(Technique
Order
Performance
Similarity
Ideal
Solution)
analysis,
PLA/PHB/7.5
was
found
be
most
prominent
produced
packaging
applications.
effective
integration
improvement
pave
way
adoption
sector,
aligning
sustainability
goals
environmentally
conscious
future.
ChemSusChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 14, 2024
Bioplastics
possess
the
potential
to
foster
a
sustainable
circular
plastic
economy,
but
their
end-of-life
is
still
challenging.
To
sustainably
overcome
this
problem,
work
proposes
hydrothermal
carbonization
(HTC)
of
residual
bioplastics
as
an
alternative
green
path.
The
focus
on
cellulose
acetate
-
bioplastic
used
for
eyewear,
cigarette
filters
and
other
applications
showing
proof
concept
chemistry
behind
conversion,
including
reaction
kinetics
model.
HTC
pure
commercial
acetates
was
assessed
under
various
operating
conditions
(180-250
°C
0-6
h),
with
analyses
solid
liquid
products.
Results
show
peculiar
behavior
these
substrates
HTC.
At
190-210
°C,
materials
almost
completely
dissolve
into
phase,
forming
5-hydroxymethylfurfural
organic
acids.
Above
220
intermediates
repolymerize
carbon-rich
microspheres
(secondary
char),
achieving
yields
up
23
%,
while
itaconic
citric
acid
form.
A
comparison
additives
demonstrates
that
amounts
acetyl
groups
derivatives
plasticizers
are
crucial
in
catalyzing
reactions,
creating
unique
environment
capable
leading
total
rearrangement
acetates.
can
thus
represent
cornerstone
establishing
biorefinery
acetate.
