Polymers,
Journal Year:
2024,
Volume and Issue:
16(16), P. 2312 - 2312
Published: Aug. 15, 2024
It
is
a
formidable
challenge
in
thermoplastic/lignin
composites
to
simultaneously
boost
tensile
strength
and
elongation
performance
due
the
rigidity
of
lignin.
To
address
this
issue,
sodium-alginate-doped
lignin
nanoparticles
(SLNPs)
were
prepared
by
combining
solvent
exchange
coprecipitation
method
used
as
an
eco-friendly
filler
for
poly(butylene
adipate-co-terephthalate)
(PBAT).
The
results
indicated
that
1%
polyanionic
sodium
alginate
solution
contributed
formation
SLNP
lignin/THF
solution.
with
mean
hydrodynamic
diameter
~500
nm
Zeta
potential
value
-19.2
mV
was
obtained,
indicating
more
hydrophobic
smaller
number
agglomerates
suspension.
Only
0.5
wt%
addition
improved
yield
strength,
at
break
32.4%,
31.8%,
35.1%
PBAT/SLNP
composite
films,
respectively.
reinforcing
effect
resulted
from
rigid
aromatic
structure
SLNP,
whereas
enhanced
attributed
nanostructural
feature
which
may
promote
boundary
cracking.
Additionally,
films
displayed
excellent
ultraviolet
(UV)
resistance
UV
shielding
percentage
near
100%
UVB
than
75%
UVA,
hindered
water
vapor,
enhancing
moisture
barrier
properties.
Overall,
study
provides
effective
strategy
eliminate
decrement
PBAT/lignin
suggest
they
are
good
candidates
be
extensively
utilized.
Biomacromolecules,
Journal Year:
2024,
Volume and Issue:
25(7), P. 4604 - 4614
Published: June 26, 2024
As
a
natural
renewable
biomacromolecule,
lignin
has
some
inherently
interesting
properties
such
as
fluorescence,
antioxidation,
and
antibacterial
performance.
However,
the
unsatisfactory
fluorescence
biological
activities
have
greatly
limited
their
value-added
large-scale
applications.
In
this
work,
nanoparticles
(LNPs)
grafted
with
vitamin
B1
hybrid
(LEVs)
were
obtained
by
using
ethylenediamine
different
contents
of
through
simple
hydrothermal
method.
The
chemical
structure,
properties,
bioactivity
characterized
to
assess
effects
on
LEVs.
It
was
found
that
performance
synthesized
LEV
particles
improved
increase
in
amount
B1.
free
radical
scavenging
rate
(RSA,
%)
increased
97.8%,
while
rates
reached
up
99.9%.
activity
involved
multiple
combined
mechanisms.
introduction
imine,
amide
groups,
positively
charged
VB1
will
make
it
easier
interact
negatively
bacterial
phospholipid
membranes
cause
lysis
death.
Then,
PVA/LEV
hydrogel
composites
prepared
freezing–thawing
method,
results
showed
hydrogels
had
more
comprehensive
mechanical
antioxidant
activities,
resulting
its
great
potential
be
used
an
efficient
biomedical
material.
Macromolecular Chemistry and Physics,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 25, 2025
Abstract
Biodegradable
poly(lactic
acid)/poly(butylene
adipate‐co‐terephthalate)
(PLA/PBAT)
blends
have
poor
compatibility,
and
reactive
compatibilization
is
the
most
effective
approach
to
improve
their
compatibility.
In
this
study,
lysine
diisocyanate
(LDI)
employed
as
a
compatibilizer
interfacial
interactions
within
PLA/PBAT
at
various
ratios
(30/70,
50/50,
70/30).
The
effects
of
LDI
on
mechanism,
thermodynamic
behavior,
mechanical
properties,
phase
morphology
are
thoroughly
investigated.
Fourier
Transform
Infrared
Spectroscopy
(FTIR)
analysis
shows
that
react
with
carboxyl
terminal
group
PLA
PBAT
form
copolymers,
which
serve
chemical
bridge
between
two
phases.
Thermodynamics
behaviors
show
reduces
crystallization
rate
crystallinity
blends.
Mechanical
property
studies
prove
significantly
improves
comprehensive
properties
blends,
elongation
break,
elastic
modulus,
tensile
strength
optimal
for
2
wt.%.
Impact
even
exceeds
90kJ
m
−2
(50/50)
above
wt.%
LDI.
studied
by
Scanning
Electron
Microscopy
(SEM)
addition
can
emulsify
two‐phase
interface,
change
sea‐island
structure
into
co‐continuous
one,
affinity
components.
Purpose
The
purpose
of
this
study
is
to
reduce
the
cost
poly(butylene
adipate-co-terephthalate)
(PBAT)
and
obtain
biodegradable
composites
with
good
interface
compatibility,
mechanical
properties
shape
memory
properties.
unmodified
modified
bamboo
powder/poly(lactic
acid)/PBAT
(B/PLA/PBAT)
were
prepared,
respectively.
effects
powder
modifiers
on
interfacial
B/PLA/PBAT
systematically
investigated.
Design/methodology/approach
prepared
by
melt
extrusion
hot-pressing
ADR
4370
SMA-2025
as
chain
extender
compatibilizer,
Findings
experimental
results
showed
that
section
roughness
increased
after
addition
powder,
but
surface
was
slightly
improved
compatibilizer.
At
same
time,
PLA
particles
well
dispersed
in
PBAT,
compatibility
between
three
improved.
With
increase
content,
tensile
strength
elongation
at
break
generally
a
decreasing
trend,
Young’s
modulus
an
increasing
trend.
modifier
have
little
effect
thermal
stability
PLA/PBAT
composites.
Rf
Rr
decreased
prestrain
300%.
From
100
°C
120
°C,
only
added
more
significantly,
especially
when
content
10
Wt.%,
still
75.50
±
2.61%.
In
general,
typical
exceeded
60.56
3.47%
71.83
0.68%,
Research
limitations/implications
properties,
application
potential
plastics
other
fields.
context
pressure
environment
caused
proliferation
non-degradable
plastic
products.
It
important
promote
research
efforts
replace
traditional
non-biodegradable
materials
biobased
or
are
environmentally
sustainable.
Originality/value
study,
unmodified-
PBAT-based
obtained
using
filler,
low-cost
natural
functional
Nordic Pulp & Paper Research Journal,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 25, 2025
Abstract
Poly(butylene
adipate-co-terephthalate)
(PBAT)
is
a
synthetic
biodegradable
thermoplastic
copolyester.
In
this
study,
we
aimed
to
enhance
lignin’s
compatibility
with
PBAT
for
polymerization.
Epoxidized
soybean
oil
(ESO)
was
introduced
as
an
interfacial
modifier
improve
lignin-PBAT
interactions.
A
lignin/ESO/PBAT
composite
film
fabricated
via
solvent-free
one-pot
method
using
torque
rheometry.
ESO
formed
dynamic
covalent
bonds
between
lignin
and
PBAT,
promoting
dispersion.
When
5
wt%
added
PBAT/lignin
composites
(1
%
lignin),
tensile
strength
increased
24.57
MPa
(from
24.37
MPa)
strain
956.12
922.41
%).
Antibacterial
assays
food
freshness
tests
confirmed
the
composite’s
suitability
packaging.
This
work
provides
eco-friendly
strategy
high-performance
lignin/PBAT
films.
The
escalating
global
threat
of
ultraviolet
(UV)
radiation
is
manifested
through
multifaceted
damage
pathways
including
cutaneous
carcinogenesis,
photodegradation
organic
substrates,
marine
ecosystem
destabilization,
and
infrastructure
weathering.
These
urgent
challenges
have
catalyzed
sustained
interdisciplinary
efforts
toward
advanced
UV-shielding
technologies
spanning
biomedical,
environmental,
industrial
domains.
Current
material
arsenals
include
melanin,
lignin,
tannin,
polydopamine,
zinc
oxide
titanium
dioxide,
etc.
materials
can
be
applied
to
diverse
fields
such
as
food
packaging,
sunscreen
fabrics,
creams,
eyeglasses,
films
tailored
processing
techniques
employing
distinct
photoprotective
mechanisms.
Notwithstanding
significant
progress,
the
development
an
integrated
selection
framework
that
reconciles
efficiency,
durability,
environmental
compatibility
persists
a
critical
knowledge
gap.
In
this
context,
main
mechanisms
various
types
UV
shielding
their
applications
in
different
are
described
systematically.
Subsequently,
comparative
analysis
advantages
shortcomings
presented,
focusing
on
efficiency
stability
impact.
Moreover,
review
delves
into
unique
value
specific
scenarios.
Finally,
building
these
analyses,
current
future
prospects
further
discussed,
with
emphasis
scalability,
eco-friendly
alternatives,
multifunctional
integration,
providing
valuable
insights
guidance
for
advancing
research
promoting
sustainable
functional
innovations
field.
