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.
International Journal of Biological Macromolecules,
Journal Year:
2024,
Volume and Issue:
275, P. 133602 - 133602
Published: July 3, 2024
Various
strategies
have
extensively
explored
enhancing
the
physical
and
biological
properties
of
chitosan
cellulose
scaffolds
for
skin
tissue
engineering.
This
study
presents
a
straightforward
method
involving
addition
glycerol
into
highly
porous
structures
two
polysaccharide
complexes:
chitosan/carboxymethyl
(Chit/CMC)
chitosan/oxidized
(Chit/OC);
during
one-step
freeze-drying
process.
Adding
glycerol,
especially
to
Chit/CMC,
significantly
increased
stability,
prevented
degradation,
improved
mechanical
strength
by
nearly
50%.
Importantly,
after
21
days
incubation
in
enzymatic
medium
Chit/CMC
scaffold
has
almost
completely
decomposed,
while
foams
reinforced
with
exhibited
only
40%
mass
loss.
It
is
possible
due
differences
multivalent
cations
polymer
chain
contraction,
resulting
varied
hydrogen
bonding
and,
consequently,
distinct
physicochemical
outcomes.
Additionally,
cellular
activities
over
higher
proliferation
fibroblast
incubation.
was
achieved
imparting
water
resistance
absorbent
material
aiding
achieving
balance
between
hydrophilic
hydrophobic
properties.
clearly
indicates
elimination
additional
crosslinkers
multiple
fabrication
steps
that
can
reduce
cost
production
engineering
applications
tailoring
degradation.
Discover Materials,
Journal Year:
2025,
Volume and Issue:
5(1)
Published: Feb. 15, 2025
Oil
spills
are
a
common
occurrence
that
threatens
marine
life,
necessitating
sustainable
remediation
methods.
Polyvinylidene
fluoride
(PVDF)
membranes
known
for
their
hydrophobicity,
chemical
resistance,
and
thermal
stability,
but
they
hindered
by
naturally
low
porosity
due
to
the
high-density
polymer
structure.
To
address
this
limitation,
porous
with
synergistic
properties
was
required.
In
study,
kapok
(Ceiba
pentandra)
fibers,
which
possess
high
porosity,
were
acetylated
improve
stability
then
blended
PVDF.
The
development
of
oil-absorbing
PVDF/CTA
membrane
aligns
Sustainable
Development
Goal
14:
Life
Below
Water.
kapok-derived
CTA
characterized
confirm
its
degree
substitution
(2.9)
solubility
in
non-polar
solvents.
Converting
fiber
into
improved
combination
crystalline
amorphous
regions
provided
balance
between
flexibility
structural
integrity.
molecular
conformation
verified
1H-NMR
13C-NMR.
Incorporating
PVDF
significantly
increased
16%,
enhancing
oil
absorption
capacity.
Only
1.828
m2
PC3
membrane,
compared
2.656
PC0,
required
absorb
1
kg
crude
oil.
findings
study
strongly
indicate
producing
can
overcome
limitations
neat
membranes.
membrane's
surface
area
could
be
further
maximized
incorporating
it
cassette-style
flow
cell
membrane.
High-porosity
thus
have
potential
an
efficient
solution
spill
environments.
ACS Omega,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 11, 2025
This
study
explores
the
production
of
bioplastic
films
from
sugar
cane
bagasse,
wood
pulp
waste,
and
boxboard
waste
using
a
three-step,
sustainable
process.
First,
cellulose
was
extracted
biomass
through
deep
eutectic
solvent
(DES)
pretreatment
system
composed
choline
chloride,
ethylene
glycol,
oxalic
acid
(ChCl-EG-OA),
which
effectively
removed
lignin
enabled
an
efficient
alkaline
treatment
for
hemicellulose
removal.
Among
sources,
bagasse
yielded
highest
content
(72.86%),
followed
by
(43.82%)
(38.81%).
In
second
phase,
optimal
conditions
acetylation
were
established.
Wood
achieved
acetate
yield
(81.25%),
(70.78%)
(47.2%).
waste-derived
also
exhibited
acetyl
degree
substitution
(DS)
at
2.83.
final
derived
demonstrated
superior
mechanical
properties,
with
tensile
strength
11.23
MPa
elongation
3.14%.
contrast,
plastic
moderate
(4.56
MPa)
minimal
(1.0%),
while
bagasse-derived
showed
weakest
performance.
The
further
highlights
adaptability
mixed-source
bioplastics,
as
blend
7.26
1.63%,
illustrating
potential
to
enhance
properties
source
combination.
approach
contributes
advancement
sustainable,
high-performance
bioplastics
broad
range
applications.
Food Frontiers,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 16, 2025
ABSTRACT
In
recent
decades,
the
thermoplastics
market
has
experienced
significant
growth
due
to
its
high
global
consumption,
ability
produce
cost‐effective
goods,
and
unparalleled
properties.
However,
increasing
environmental
concerns,
reliance
on
depleting
fossil
reserves,
sustainability
challenges
have
driven
extensive
research
into
bio‐based
biodegradable
polymers,
particularly
for
food
packaging
applications.
These
eco‐friendly
alternatives
offer
promising
strategies
managing
waste
reducing
harm.
Yet,
they
face
limitations
such
as
poor
mechanical
barrier
properties,
inherent
brittleness,
melting
temperatures
that
often
exceed
their
degradation
temperatures.
This
article
explores
how
advancements
in
multiphase
systems,
instance,
through
methods
like
plasticization,
blending,
foaming,
formation
of
composites,
nanocomposites,
multilayer
films,
can
overcome
these
drawbacks,
enhancing
both
functionality
range
applications
polymers.
It
discusses
modifying
polymers
more
processable
materials
with
lower
blending
others
create
cost‐effective,
high‐performance
systems.
review
offers
a
comprehensive
exploration
advanced
materials,
highlighting
capacity
transform
promote
sustainable
future.
