Journal of Thermal Analysis and Calorimetry,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 27, 2024
Abstract
This
study
focuses
on
the
development
of
bioactive
packaging
materials
by
incorporating
grape
pomace
and
copper
particles
into
polylactic
acid
(PLA)
composites.
The
goal
is
to
increase
shelf
life
packaged
foods
while
benefiting
health
consumers
through
use
these
active
materials.
6
recipes
composite
based
Proviplast
2624
plasticizer
were
obtained.
additives
added
were:
pomace,
at
0.5%,
1%
1.5%,
particles,
formed
using
PEG
600
+
CuSO₄,
2%,
5%
8%.
Material
characterization
techniques:
FTIR
Spectroscopy,
used
chemical
structure.
Differential
scanning
calorimetry
(DSC):
examined
thermal
transitions
such
as
glass
transition
melting
temperatures.
Thermogravimetric
analysis
(TGA)
differential
thermogravimetry
(DTG):
evaluated
stability
degradation
Scanning
electron
microscopy
(SEM)
atomic
force
(AFM):
analyzed
surface
morphology
Mechanical
tests:
tensile
strength,
elongation
break
flexibility.
Thermal
property
analyzes
revealed
that
acted
plasticizers,
reducing
intermolecular
forces
between
PLA
chains,
which
decreased
temperature
(Tg),
cold
crystallization
(Tcc)
(Tm).
addition
composites,
indicating
a
slight
reduction
in
stability.
transformation
temperatures
changed
nature
(exothermic
or
endothermic)
varied
with
additive
concentrations.
properties
indicated
strength
increasing
concentration.
Elongation
longitudinal
modulus
elasticity
increased
significantly,
especially
improving
flexibility
PLA.
These
changes
indicate
material
can
absorb
more
energy
before
breaking,
making
it
ductile
suitable
for
flexible
applications.
Increased
improved
resistance
ensure
withstand
demands
packaging,
handling
shipping.
combination
flexibility,
moderate
makes
PLA-based
composites
incorporated
enhance
aspect
sustainability
recycling
agricultural
waste,
both
ecological
functional,
viable
option
food
packaging.
Engineering and Technology Journal,
Год журнала:
2024,
Номер
42(9), С. 1179 - 1192
Опубликована: Сен. 3, 2024
This
study
aims
to
optimize
the
operational
variables
influencing
incorporation
of
Hesperidin
nanoparticles
(HSP
NPs)
into
poly(lactic
acid)/poly(butylene
adipate-co-terephthalate)
(PLA/PBAT)
for
manufacturing
mixed
matrix
membranes
(MMMs)
oily
wastewater
treatment.
An
optimization
method
was
employed
determine
optimal
values
key
process
factors
achieve
specific
flux
and
rejection
rates
exceeding
required
levels.
Statistical
techniques
such
as
response
surface
methodology
(RSM)
analysis
variance
(ANOVA)
were
used
enhance
performance
on
a
larger
scale.
research
investigated
impact
operating
parameters
oil
PLA/PBAT/HSP
across
all
samples.
The
studied
included
HSP
NPs
content
(0-0.05
wt.%),
concentration
(100-300
ppm),
transmembrane
pressure
(1.5-3.5
bar).
A
mathematical
model
calculating
(%)
developed.
findings
indicated
that
PLA/PBAT/HSP-based
MMMs
demonstrated
efficiency,
achieving
121
LMH
98.53%.
conditions
0.03
wt.%
HSP,
an
158.28
ppm,
3.5
bar
yielded
best
response.
results
show
exhibited
enhanced
separation
properties,
making
them
suitable
treating
in
various
applications.
Emerging contaminants,
Год журнала:
2024,
Номер
10(4), С. 100388 - 100388
Опубликована: Июль 6, 2024
The
pervasive
use
of
plastics
in
modern
society
necessitates
the
incorporation
organic
additives
to
enhance
their
performance.
However,
leachability
these
and
potential
adverse
effects
on
environmental
biological
health
have
raised
significant
concerns.
This
review
provides
a
comprehensive
evaluation
factors
influencing
release
from
examines
detrimental
impacts
organisms
humans.
It
discusses
effective
degradation
techniques,
such
as
photodegradation
biodegradation,
mitigate
effects.
Furthermore,
this
explores
recent
advancements
eco-friendly
plastic
additives,
including
bio-based
plasticizers,
flame
retardants,
antioxidants,
environmentally
friendly
non-biobased
additives.
highlights
alternatives
traditional
integrates
latest
research
findings
emerging
trends,
underscoring
need
for
continued
development
sustainable
solutions.
aims
facilitate
transition
techniques
greener
effort
contributes
protection
development,
providing
crucial
guidance
insights
future
practical
applications.
Food biomacromolecules.,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 16, 2024
Abstract
Biopolymers,
derived
from
renewable
resources
such
as
plants,
animals,
and
microorganisms,
are
emerging
sustainable
alternatives
to
traditional
petroleum‐based
polymers.
The
review
examines
the
key
characteristics
of
biopolymers,
including
their
biodegradability,
biocompatibility,
potential
for
carbon
neutrality.
These
crucial
determining
suitability
different
packaging
applications
reduce
environmental
pollution.
While
acknowledging
promise
also
addresses
challenges
production
costs,
scalability
issues,
performance
limitations.
Strategies
enhance
biopolymer
performance,
plasticization,
blending,
nanomaterial
reinforcement,
discussed.
Interestingly,
highlights
field
active
intelligent
systems,
which
incorporate
antimicrobial
agents
sensors
extend
shelf
life
monitor
food
quality
in
real‐time.
emphasizes
importance
cycle
assessments
evaluating
overall
impact
biopolymer‐based
compared
conventional
alternatives.
In
conclusion,
this
provides
an
overview
current
state
research
identifies
areas
future
investigation.
By
synthesizing
knowledge,
identifying
challenges,
highlighting
opportunities,
contributes
ongoing
efforts
create
a
more
circular
industry.
International Journal of Ambient Energy,
Год журнала:
2024,
Номер
45(1)
Опубликована: Май 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.
Polymer Degradation and Stability,
Год журнала:
2024,
Номер
221, С. 110678 - 110678
Опубликована: Янв. 30, 2024
The
winery
waste
of
a
white
grape
was
extracted
in
two
different
ways
to
produce
extracts,
one
containing
the
natural
oil
and
without
it;
goal
work
determine
positive
or
negative
influence
content
extract
on
its
stabilization
effect
efficiency.
polyphenol
extracts
moderate,
but
their
DPPH
assay
proved
antioxidant
effect.
were
added
polyethylene
concentrations
between
0
2000
ppm,
stabilizing
efficiency
determined
multiple
extrusion
experiments.
stabilized
adequately;
only
slightly
smaller
than
that
commercial
hindered
phenolic
antioxidant,
Irganox
1010.
solubility
PE
is
much
larger,
280
flavonoid-type
quercetin
(15
ppm).
presence
had
slight
efficiency,
properties
more
beneficial
harmful.
It
decreases
interactions
among
molecules,
improves
processability
polymer,
increases
homogeneity
slightly.
Accordingly,
an
extraction
step
can
be
saved
during
preparation
product,
thus
offering
economic
advantage.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(16), С. 6412 - 6423
Опубликована: Апрель 12, 2024
Under
dual
pressures
of
energy
scarcity
and
environmental
pollution,
the
biobased
polyester
poly(ethylene
furanoate)
(PEF)
is
poised
to
dominate
industry
in
future,
overtaking
conventional
petroleum-based
polyesters.
Nonetheless,
PEF
discoloration
a
critical
impediment
its
commercial
success.
Esterification
reaction
2,5-furandicarboxylic
acid
(FDCA)
ethylene
glycol
(EG)
was
developed
at
varying
temperatures,
yielding
esterified
products
exhibiting
degrees
discoloration.
The
main
compounds
minor
impurities
all
samples
were
accurately
separated
identified
using
ultrahigh-performance
liquid
chromatography/high-definition
mass
spectrometry
(UPLC-HDMS)
techniques.
chemical
structure
yellowing
component
determined
by
secondary
(MS/MS),
Fourier
transform
infrared
(FTIR)
spectrometry,
nuclear
magnetic
resonance
(NMR)
spectrometer.
It
can
be
concluded
that
different
forms
decarboxylated
byproducts
produced
during
esterification
polycondensation,
which
resulted
PEF.
At
same
time,
also
present
alcoholysis
brown
chips
but
absent
white
PET
chips.
These
results
clearly
demonstrate
direct
relationship
between
decarboxylation.
Overall,
this
work
offers
theoretical
support
insights
for
future
research
into
discoloration,
establishing
solid
foundation
further
development
application.
Journal of Polymer Research,
Год журнала:
2024,
Номер
31(11)
Опубликована: Окт. 16, 2024
Abstract
This
study
describes
the
combination
of
unique
properties
lignin
with
TiO
2
as
an
innovative
and
effective
preparation
method
for
high-performance
flame-retardant
additives
that
may
be
utilized
polymer
coatings.
The
use
resulted
in
numerous
advantages
including
increased
number
functional
groups,
satisfactory
biocompatibility,
low
toxicity,
high
carbon
content.
major
benefit
is
associated
reduced
footprint
manufactured
product.
Lignin
can
classified
a
natural
agent
owing
to
amount
char
formed
during
combustion.
In
turn,
exhibits
chemical
stability
operating
costs
considered
non-toxic
environmentally
friendly
material.
During
experiments,
commercial
anatase
crystallographic
form,
synthesized
from
titanyl
sulfate
hydrate,
kraft
well
organic–inorganic
hybrid
materials
composed
these
were
evaluated
epoxy-resin-based
coatings
(Epidian
601)
their
investigated
detail.
cone
colorimetry
test
confirmed
obtained
hybrids
are
coatings,
notable
fire
hazard
reduction
observed
samples
containing
synergistic
system
titanium
oxide
lignin.
coating
was
most
suppression
processes.
conducted
thermal
mechanical
investigations
good
performance
indicating
resistance
up
360
°C
Shore
D
hardness
range
80.36–86.28°Sh,
accordingly.
Optical
profilometry
show
lignin/TiO
exhibit
stable
topological
surface
shape
dispersion
uniformity
matrix.
All
tests
allowed
confirmation
presence
form
promising
alternative
non-biodegradable
synthetic
which
improve
properties.
