ACS Nano,
Journal Year:
2021,
Volume and Issue:
15(3), P. 4811 - 4823
Published: Feb. 17, 2021
Fabrication
of
spherical
lignin
nanoparticles
(LNPs)
is
opening
more
application
opportunities
for
lignin.
However,
dissolution
LNPs
at
a
strongly
alkaline
pH
or
in
common
organic
solvent
systems
has
prevented
their
surface
functionalization
dispersion
state
as
well
processing
and
applications
that
require
maintaining
the
particle
morphology
under
harsh
conditions.
Here,
we
report
simple
method
to
stabilize
through
intraparticle
cross-linking.
Bisphenol
A
diglycidyl
ether
(BADGE),
cross-linker
that,
like
lignin,
contains
substituted
benzene
rings,
coprecipitated
with
softwood
Kraft
form
hybrid
(hy-LNPs).
The
hy-LNPs
BADGE
content
≤20
wt
%
could
be
cross-linked
without
altering
colloidal
stability.
Atomic
force
microscopy
quartz
crystal
microbalance
dissipation
monitoring
were
used
show
internally
particles
resistant
conditions
acetone-water
binary
dissolved
unmodified
entirely.
We
further
demonstrated
covalent
12
an
epoxy
ring-opening
reaction
obtain
pH-switchable
charge.
Moreover,
≥30%
allowed
both
inter-
cross-linking
>150
°C,
which
enabled
waterborne
wood
adhesives
competitive
dry/wet
adhesive
strength
(5.4/3.5
MPa).
Green Chemistry,
Journal Year:
2020,
Volume and Issue:
22(9), P. 2712 - 2733
Published: Jan. 1, 2020
A
critical
review
on
spherical
lignin
nanoparticles
highlighting
aspects
associated
to
their
shape,
performance
in
applications,
sustainability,
stability
and
degradation.
Biotechnology for Biofuels,
Journal Year:
2017,
Volume and Issue:
10(1)
Published: July 24, 2017
Although
conversion
of
low
value
but
high-volume
lignin
by-product
to
its
usable
form
is
one
the
determinant
factors
for
building
an
economically
feasible
integrated
lignocellulose
biorefinery,
it
has
been
challenged
by
structural
complexity
and
inhomogeneity.
We
others
have
shown
that
uniform
nanoparticles
can
be
produced
from
a
wide
range
technical
lignins,
despite
varied
lignocellulosic
biomass
pretreatment
methods/conditions
applied.
This
value-added
nanostructure
enriched
with
multifunctional
groups
promising
versatile
material
platform
various
downstream
utilizations
especially
in
emerging
nanocomposite
fields.Inspired
story
successful
production
application
nanocellulose
biopolymer,
two
types
(LNPs)
were
prepared
through
self-assembling
deep
eutectic
solvent
(DES)
ethanol-organosolv
extracted
lignins
derived
two-stage
fractionation
approach,
respectively.
Both
LPNs
exhibited
sphere
morphology
unique
core-shell
nanostructure,
where
DES-LNPs
showed
more
particle
size
distribution.
When
incorporated
into
traditional
polymeric
matrix
such
as
poly(vinyl
alcohol),
these
LPN
products
displayed
great
potential
formulate
transparent
film
additional
UV-shielding
efficacy
(reached
~80%
at
400
nm
4
wt%
LNPs)
antioxidant
functionalities
~160
μm
mol
Trolox
g-1
LNPs).
At
same
time,
abundant
phenolic
hydroxyl
on
shell
LNPs
also
provided
good
interfacial
adhesion
PVA
formation
hydrogen
bonding
network,
which
further
improved
mechanical
thermal
performances
fabricated
LNPs/PVA
films.Both
are
excellent
candidates
producing
polymer
nanocomposites
using
facile
route.
The
flexible
composite
films
high
efficacy,
activity,
biocompatibility
advanced
packaging
field,
potentially
provides
high-value
product
stream
biorefinery.
study
could
open
door
novel
nascent
bioeconomy.Graphical
abstractLignin
nanoparticle
efficacy.
ChemSusChem,
Journal Year:
2020,
Volume and Issue:
13(17), P. 4385 - 4393
Published: July 8, 2020
Lignin
is
a
primary
component
of
lignocellulosic
biomass
and
an
underutilized
feedstock
in
the
growing
pulping
biofuel
industries.
Currently,
over
50
million
tons
industrial
lignin
are
produced
annually
from
bioethanol
processes
world.
Around
95
%
burned
as
fuel
heat
power
plants
due
to
its
complicated,
destructive,
condensed
structures
hindering
direct
utilization,
while
remaining
5
used
for
potential
applications,
such
additives,
binders,
dispersants,
surfactants,
through
modification.
Meanwhile,
different
biorefinery
also
produce
considerable
amount
with
various
structural
features
properties.
The
development
technologies
characterization
currently
desirable
valorization,
which
will
improve
techno-economics
applications
lignins
ChemSusChem,
Journal Year:
2019,
Volume and Issue:
12(10), P. 2039 - 2054
Published: April 1, 2019
To
liberate
society
from
its
dependence
on
fossil-based
fuels
and
materials
it
is
pivotal
to
explore
components
of
renewable
plant
biomass
in
applications
that
benefit
their
intrinsic
biodegradability,
safety,
sustainability.
Lignin,
a
byproduct
the
pulp
paper
industry,
plausible
material
for
carrying
various
types
cargo
small-
large-scale
applications.
Herein,
possibilities
constraints
regarding
physical-chemical
properties
lignin
source
as
well
modifications
processing
required
render
lignins
suitable
loading
release
pesticides,
pharmaceuticals,
biological
macromolecules
reviewed.
In
addition,
technical
challenges,
regulatory
toxicological
aspects,
future
research
needed
realize
some
promises
nano-
microscaled
hold
sustainable
are
critically
discussed.
