Journal of Polymer Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 11, 2024
ABSTRACT
Lignin,
comprising
20%–35%
of
lignocellulosic
biomass,
is
the
second
most
abundant
biopolymer
after
cellulose.
As
bioethanol
industry
expands,
accumulation
lignin
by‐products
necessitates
innovative
valorization
strategies.
This
study
explores
synthesis
and
characterization
lignin‐derived
composites.
Specifically,
reaction
20
wt.
%
guaiacol
or
syringol
with
80
elemental
sulfur
gives
composites
GS
SS
,
respectively.
The
chemical
structures
were
elucidated
using
GC–MS,
1
H
NMR,
UV–Vis
spectroscopy,
revealing
formation
both
SC
aryl
alkyl
bonds.
Thermal
morphological
analysis
(via
TGA,
DSC,
PXRD,
SEM‐EDS)
indicated
has
higher
crystallinity
thermal
stability
than
attributed
to
a
degree
crosslinking
greater
content
dark
sulfur.
Mechanical
testing
showed
exhibits
superior
compressional
flexural
strengths,
enhanced
Young's
modulus
Shore
hardness,
compared
.
Notably,
mechanical
strength
parameters
for
are
comparable
those
C62
class
bricks
used
in
construction
applications.
These
findings
suggest
that
composites,
particularly
incorporating
syringol,
can
provide
viable
alternatives
traditional
materials
various
applications,
contributing
waste
sustainable
science.
Frontiers in Plant Science,
Journal Year:
2023,
Volume and Issue:
14
Published: Oct. 27, 2023
Fine
root
decomposition
is
a
physio-biochemical
activity
that
critical
to
the
global
carbon
cycle
(C)
in
forest
ecosystems.
It
crucial
investigate
mechanisms
and
factors
control
fine
ecosystems
understand
their
system-level
balance.
This
process
can
be
influenced
by
several
abiotic
(e.g.,
mean
annual
temperature,
precipitation,
site
elevation,
stand
age,
salinity,
soil
pH)
biotic
microorganism,
substrate
quality)
variables.
Comparing
rates
within
sites
reveals
positive
impacts
of
nitrogen
phosphorus
concentrations
negative
effects
lignin
concentration.
Nevertheless,
estimating
actual
breakdown
difficult
due
inadequate
methods,
anthropogenic
activities,
impact
climate
change.
Herein,
we
propose
how
physiochemical
characteristics
interact
with
microorganisms
influence
decomposition.
review
summarized
elements
this
process,
as
well
research
methods
used
it.
There
also
need
study
seasonal
changes
affecting
cumulative
evidence
will
provide
information
on
temporal
spatial
dynamics
ecosystems,
determine
logging
reforestation
affect
The Innovation Materials,
Journal Year:
2024,
Volume and Issue:
2(2), P. 100062 - 100062
Published: Jan. 1, 2024
<p>Lignin,
the
most
abundant
natural
aromatic
compound
on
earth,
offers
valuable
resources
for
development
of
bio–based
polymers.
In
recent
years,
a
plethora
diverse
polymer
materials
has
been
reported
using
either
separated
lignin
or
lignin–derived
monomers.
this
review,
we
present
comprehensive
summary
achievements
and
compare
these
two
well–known
strategies.
While
utilizing
directly
as
starting
advantages
in
terms
cost–effectiveness
wider
options,
employing
monomers
suffer
from
higher
costs
limited
structural
variety.
However,
well–defined
structure
lignin-derived
monomers,
retention
functional
group
characteristics
make
promising
strategy
future
applications.
Through
review
paper,
aim
to
inspire
more
researchers
material
science
focus
lignin—an
intriguing
emerging
carbon-neutral
biomaterial.</p>
Deleted Journal,
Journal Year:
2023,
Volume and Issue:
5(1)
Published: Dec. 1, 2023
Abstract
Bone
regeneration
for
large,
critical-sized
bone
defects
remains
a
clinical
challenge
nowadays.
Guided
(GBR)
is
promising
technique
the
repair
of
multiple
defects,
which
widely
used
in
oral
and
maxillofacial
but
still
unsatisfied
treatment
long
defects.
Here,
we
successfully
fabricated
bilayer
mineralized
collagen/collagen
(MC/Col)-GBR
membrane
with
excellent
osteoinductive
barrier
function
by
coating
MC
particles
prepared
via
situ
biomimetic
mineralization
process
on
one
side
sheet-like
pure
collagen
layer.
The
aim
present
study
was
to
investigate
physicochemical
properties
biological
functions
MC/Col
film,
further
evaluate
its
efficiency
large
defect
repair.
Fourier-transform
infrared
spectra
X-ray
diffraction
patterns
confirmed
presence
both
hydroxyapatite
phase
as
well
chemical
interaction
between
them.
stereo
microscope,
scanning
electron
microscopy
atomic
force
microscope
showed
uniform
distribution
resulting
rougher
surface
compared
Col
film.
quantitative
analysis
contact
angle,
light
transmittance
tensile
strength
demonstrated
that
film
have
better
hydrophilicity,
mechanical
properties,
light-barrier
respectively.
In
vitro
macrophage
co-culture
experiments
can
effectively
inhibit
proliferation
fusion,
reducing
fibrous
capsule
formation.
vivo
assessment
rabbit
critical
segmental
radial
proved
performed
than
other
groups
promoting
due
their
unique
dual
osteoinductive/barrier
function.
These
findings
provided
evidence
has
great
potential
effective
Graphic
abstract
iScience,
Journal Year:
2024,
Volume and Issue:
27(4), P. 109418 - 109418
Published: March 4, 2024
Lignin
is
an
abundant
polyaromatic
polymer
with
a
wide
range
of
potential
future
uses.
However,
the
conversion
lignin
into
valuable
products
comes
at
cost,
and
medium-
to
high-value
applications
are
thus
appropriate.
Two
examples
these
polymers
(e.g.,
as
fibers,
plasticizers,
or
additives)
flow
batteries
redox
species).
Both
areas
would
benefit
from
lignin-derived
molecules
potentially
low
molecular
weight
high
(electro)chemical
functionality.
A
promising
route
obtain
oxidative
depolymerization,
it
enables
formation
targeted
compounds
multiple
functionalities.
An
application
in
production
plastics
synthesis
new
sustainable
polymers.
Employing
organic
molecules,
such
quinones
heterocycles,
constitute
important
step
toward
sustainability
aqueous
batteries,
its
derivatives
emerging
species,
mainly
due
their
cost
renewability.
Current Opinion in Green and Sustainable Chemistry,
Journal Year:
2024,
Volume and Issue:
47, P. 100931 - 100931
Published: April 30, 2024
Benzene,
toluene,
and
xylenes
(BTX),
as
well
their
downstream
products,
are
a
fundamental
part
of
numerous
processes
in
the
chemical
industry.
However,
by
now,
aromatics
still
yielded
from
fossil
resources
like
naphtha,
coal,
natural
gas.
Thus,
to
push
industry
further
toward
renewability,
production
bio-based
is
an
essential
step
take.
The
implementation
replace
petrochemical
can
proceed
two
main
ways:
direct
replacement
via
renewable
drop-in
or
functional
alternatives.
both
pathways
requires
significant
process
optimization
large-scale
application
industrial
processes.
In
this
work,
mainly
discussed
context
pyrolysis
Diels-Alder
reactions.
Furthermore,
alternatives
here
focus
on
furan
derivatives
lignin-based
building
blocks.
