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.
Journal of Fire Sciences,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 18, 2025
The
demand
for
sustainable
materials
has
led
to
the
development
of
biopolymers
as
alternatives
petroleum-based
polymers.
However,
their
high
flammability
limits
use
in
applications
requiring
stringent
fire
safety.
Bio-based
additives
such
lignin
and
chitosan
among
others
have
charring
abilities
that
enhance
flame
retardancy
by
forming
protective
barriers
during
combustion.
Renewable
phytic
acid,
tannic
casein,
hydrophobins
also
show
potential
improving
polymer
dehydration,
which
can
help
create
a
stable
char
layer.
Phosphorylation
nitrogen-containing
compounds
nanomaterials
promise
resistance.
These
advancements
make
more
suitable
high-risk
safety
while
maintaining
sustainability.
While
considerable
progress
been
made
enhancing
biopolymers,
challenges
remain
developing
highly
effective,
non-toxic,
fully
biodegradable
retardants
do
not
compromise
physical
properties
processability
biopolymers.
Polymer-Plastics Technology and Materials,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 40
Published: Nov. 1, 2024
One
of
the
polymers
with
biggest
production
volume
is
poly(vinyl
chloride)
(PVC)
considering
their
versatility,
durability,
lightweight,
as
well
low
cost
production,
plastics
have
recently
become
an
essential
part
everyone's
daily
life.
However,
increased
and
usage
poses
significant
environmental
problems
because
incomplete
utilization,
a
lengthy
biodegradation
period,
detrimental
effects
on
living
things.
This
study
examines
latest
findings
in
PVC
research,
including
its
properties,
polymerization,
modification,
recycling,
diverse
applications.
It
has
been
proposed
that
during
along
application
both
inorganic
organic
thermal
stabilizers,
can
mitigate
some
basic
limiting
characteristics
PVC.
chemistry
extended
by
vast
continuous
study,
mainly
chemical
transformations
this
polymeric
material.
describes
modification
using
different
materials
active
modifying
agent.
The
latter
included
substitutions,
modifications,
nucleophilic
radicals,
removal
or
dehydrochlorination,
grafting
polymerizations.
PVC's
consequences
are
examined,
overview
functionalization
provided
article,
discussion
main
reactivity
trends
lens
recycling.
Industrial Crops and Products,
Journal Year:
2024,
Volume and Issue:
214, P. 118493 - 118493
Published: April 8, 2024
Injection
molded
cellulose
bio-based
composites
have
been
effectively
manufactured
using
acetate
(CA),
environmentally
friendly
triethyl
citrate
(TEC)
plasticizer,
and
cellulosic
fibers.
This
study
investigated
the
surface
chemistry,
thermal
stability,
dielectric
properties
of
CA
biopolymer
its
composites.
DSC
result
plasticized
(PCA)
showed
that
glass
transition
temperature
decreased
from
191°C
to
101°C
melting
224°C
about
140°C
after
plasticization,
which
improves
processing
Fourier
Transform
Infrared
(FTIR)
spectroscopy
was
used
determine
chemical
raw
materials
The
results
a
good
plasticization
effect
TEC
plasticizer
by
presence
ester
bonds
at
1734
cm−1
in
PCA
spectra.
Chemical
interactions
between
hydroxyl
groups
different
components
were
also
observed
3200–3600
region.
Dielectric
analysis
frequencies
enhanced
compared
pure
polymer.
Composites
with
50
wt%
fibers
had
values
ε'
tan
δ
4
0.13
1
MHz,
respectively.
These
as
frequency
increased
MHz
3
GHz,
reaching
2.8
0.04,
increase
frozen
state
induced
an
relaxation
process
shifted
higher
temperatures
frequencies.
SPE Polymers,
Journal Year:
2024,
Volume and Issue:
5(2), P. 217 - 227
Published: Feb. 20, 2024
Abstract
Grafting
polymers
with
reactive
maleic
anhydride
is
a
common
approach
for
the
synthesis
of
new
material
capability
acting
as
compatibilizer
in
polymer
blends.
Accordingly,
this
research
showed
grafting
onto
renewable
cellulose
acetate
using
an
initiator.
The
process
through
extrusion
good
stability
continuous
production
all
grafted
samples.
Moreover,
two
different
processes,
namely
one‐step
and
two‐step
were
shown
to
produce
materials
very
similar
characteristics.
by
reacting
its
hydroxyl
groups
was
confirmed
both
Fourier
transform
infrared
spectroscopy
nuclear
magnetic
resonance
analysis.
Rheological
studies
also
demonstrated
enhanced
flowability
lower
viscosity
comparison
plasticized
acetate.
Highlights
extrusion.
Detection
NMR
High
thermal
materials.
Significant
reduction
after
International Journal of Ambient Energy,
Journal Year:
2024,
Volume and Issue:
45(1)
Published: May 6, 2024
Rise
in
population,
urbanisation,
and
socioeconomic
growth
have
led
to
amplified
food
consumption,
globally.
Increased
consumption
of
vegetable
oil
for
frying
cooking
various
items
households,
restaurants,
cafeterias
instigates
the
generation
millions
tons
waste
(WCO)
across
jurisdictions.
Inappropriate
disposal
hazardous
WCO
blocks
drainages,
contaminates
waterbodies,
exacerbates
environmental
degradation.
Conversion
into
valuable
products
remains
a
realistic
sustainable
strategy
management.
This
review
delves
recent
advances
deployment
as
low-cost
feedstock
non-fuel
such
biolubricant,
bioplasticizer,
bioasphalt,
3D
printing
resin.
In
this
regard,
work
describes
generation,
collection,
pretreatment,
characterisation
products.
addition,
major
challenges
future
research
directions
conversion
are
highlighted
before
conclusion.
The
study
recommends
commissioning
multidisciplinary
unearthing
robust
collection
systems,
novel
pretreatment
methodologies,
innovative
technologies
WCO.
