Functional Composites and Structures,
Journal Year:
2024,
Volume and Issue:
7(1), P. 015002 - 015002
Published: Dec. 4, 2024
Abstract
In
this
study,
we
report
on
extracting
lignin
from
Duabanga
grandiflora
(Khukon),
an
untapped
wood
source,
and
its
transformation
into
nano-lignin
(NL)
to
create
durable
thermally
stable
composites.
Utilizing
ultrasonication,
synthesized
spherical
nanoparticles
with
average
size
of
8
nm,
as
verified
by
high-resolution
transmission
electron
microscopy.
These
were
integrated
a
polyvinyl
alcohol
(PVA)
guar
gum
(GG)
matrix,
resulting
in
PVA-GG-NL
(PGNL)
PVA-GG
nanocomposite
films
containing
various
contents
nano-particles
(1,
2
3
wt%)
formulated
simple
solvent
cast
method
cross-linked
adding
borax.
Addition
1
wt%
brought
the
composite
29.8
MPa
tensile
strength
139.3%
elongation
at
break.
Compared
PVA-GG-lignin
composites,
PGNL
composites
exhibited
59.4%
increase
enhanced
break
good
thermal
degradation
properties.
Notably,
transparent
but
could
shield
99.9%
UV-A
(320–400
nm)
UV-B
(280–320
radiations,
marking
significant
advancement
UV
protective
materials.
Our
innovative
use
D.
-derived
NL
dual-polymer
network
not
only
underscores
potential
renewable
resources
high-performance
applications
also
aligns
principles
circular
bioeconomy
offering
sustainable
solution
for
effective
protection.
Small,
Journal Year:
2024,
Volume and Issue:
20(34)
Published: April 11, 2024
Abstract
Control
over
particle
size
and
shape
heterogeneity
is
highly
relevant
to
the
design
of
photonic
coatings
supracolloidal
assemblies.
Most
developments
in
area
have
relied
on
mineral
petroleum‐derived
polymers
that
achieve
well‐defined
chemical
dimensional
characteristics.
Unfortunately,
it
challenging
attain
such
control
when
considering
renewable
nanoparticles.
Herein,
a
pathway
toward
selectable
biobased
physicochemical
profiles
proposed.
Specifically,
lignin
fractionated,
widely
available
heterogeneous
polymer
can
be
dissolved
aqueous
solution,
obtain
variety
monodispersed
fractions.
A
two‐stage
cascade
density
gradient
centrifugation
relieves
need
for
solvent
pre‐extraction
or
other
pretreatments
but
achieves
bins
uniform
(~60
860
nm
polydispersity,
PDI<0.06,
dynamic
light
scattering)
along
with
characteristic
surface
features
introduced.
It
found
properties
associated
colloidal
behavior
particles
are
suitably
classified
distinctive
populations,
namely,
i)
nanoscale
(50–100
nm),
ii)
(100–300
nm)
iii)
near‐micron
(300–1000
nm).
The
strong
correlation
exists
between
characteristics
(molar
mass,
charge,
bonding
functional
groups,
among
others)
introduced
as
powerful
identify
nanotechnological
uses
benefit
from
functionality
cost‐effectiveness
biogenic
particles.
Separation and Purification Technology,
Journal Year:
2024,
Volume and Issue:
347, P. 127570 - 127570
Published: April 18, 2024
Colloidal
lignin
particles
(CLPs)
emerge
as
a
sustainable
alternative
to
traditional,
fossil-based
emulsion
stabilizers.
However,
effectively
outperforming
the
conventional
ingredients
requires
addressing
challenges
posed
by
heterogeneity
and
structural
complexity.
In
this
study,
one-step
acetone
fractionation
was
applied
softwood
hardwood
kraft
lignins
tackle
issue.
The
resulting
soluble
(AS)
insoluble
(AI)
fractions,
along
with
pristine
lignins,
underwent
thorough
characterization
were
used
create
CLPs
through
hydrotropic
precipitation.
fraction-derived
tested
for
first
time
Pickering
Notably,
strong
correlation
emerged
between
traits
of
each
sample
properties
emulsions.
Such
allowed
fine-tuning
their
physicochemical
antioxidant
features.
AS
characterized
higher
phenolic
OH
content
lower
molecular
weight,
led
larger
sizes
reduced
hydrophilic
character
compared
those
derived
from
AI-
lignins.
exhibited
superior
emulsifying
capacity
imparted
long-term
stability
formed
Moreover,
emulsions
showed
high
potential
agents,
proving
ability
multifunctional
systems.
Overall,
work
demonstrates
how
unique
can
be
selectively
enhanced
method
seamlessly
transferred
This
advancement
promotes
use
in
high-value-added
sectors
such
cosmetics
personal
care.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2025,
Volume and Issue:
13(1), P. 447 - 460
Published: Jan. 1, 2025
Pickering
emulsions
(PEs)
make
an
important
contribution
to
the
development
of
stable,
sustainable,
biosafe,
and
controlled-release
pesticide
formulations
due
their
designable
interfacial
film
structure
efficient
encapsulation
capability.
However,
poor
mechanical
stability
PEs
induces
droplet
splashing
while
impacting
superhydrophobic
surfaces,
which
is
not
in
line
with
sustainable
strategy
agriculture.
Herein,
a
cleaner
production
jammed
emulsion
was
constructed
using
amphiphilic
alginate-based
derivatives
(Ugi-Alg)
functionalized
SiO2
(SN-CPA).
As
anticipated,
deposition,
stability,
persistence,
have
been
improved,
significantly
reducing
need
for
repeated
applications
risk
environmental
contamination.
The
impact
dynamics
calculations
demonstrate
dominant
role
jamming
sacrificial
bond
synergies
promoting
high-speed
deposition.
transmission
decreased
from
40.8%
unjammed
10.3%,
improved.
Additionally,
after
rainwater
washing,
effective
control
rate
Botrytis
cinerea
reached
approximately
87%.
Notably,
pH-response
B–O
bonds
endows
In
addition,
biosafety
assessment
indicated
that
did
affect
height
strawberry
seedlings
short
term.
Therefore,
this
review
highlights
potential
improve
utilization
efficiency
increase
biocompatibility,
thus
providing
innovative
strategies
agricultural
design.
