With
the
widespread
use
of
wood-based
materials
in
human
life,
availability
wood
resources
has
gradually
decreased.
The
low-value
wood,
without
need
for
chemical
adhesives,
emerged
as
an
effective
strategy
addressing
crisis
depleting
preparation
composites.
In
this
study,
a
high-performance
ultra-high
filled
wood-plastic
composites
(UFWPC)
composed
flour
(up
to
95
wt.%)
was
prepared
through
cell
wall
densification
and
construction
multiple
cross-linked
network
structures
via
deep
cross-fusion.
UFWPC
exhibits
excellent
mechanical
properties,
flexural
strength
is
5.9
times
that
commercial
particleboard,
2.1
fiberboard,
2.6
Additionally,
demonstrates
creep
resistance,
strain
76.79%
lower
than
Furthermore,
innovative
customization
large-scale
continuous
flat-pressing
system
established
produce
UFWPC.
highly
efficient
positioned
it
substitute
composites,
fiberboard.
This
approach
provides
promising
valorization
sustainability
pathway
recycling
plastics
wood.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 15, 2025
Current
sound-absorbing
materials,
reliant
on
nonrenewable
resources,
pose
sustainability
and
disposal
challenges.
This
study
introduces
a
novel
collagen-lignin
sponge
(CLS),
renewable
biomass-based
material
that
combines
collagen's
acoustic
properties
with
lignin's
structural
benefits.
CLSs
demonstrate
high
porosity
(>0.97),
lightweight
(10
mg
cm-
3),
exceptional
broadband
noise
absorption
performance
(sound
coefficient
exceeding
0.9
across
2000-6300
Hz).
Due
to
their
unique
hierarchical
aligned
pore
structure,
display
superior
low-frequency
capabilities
noise-reduction
of
0.64
(for
30-mm-thick
sample).
A
geometric
model
is
also
developed
evaluate
predict
the
sound
consistency
experimental
results.
Additionally,
inclusion
lignin
as
green
crosslinker
has
significantly
improved
thermal
stability
compressive
strength
by
≈600%
compared
collagen
sponges
alone.
The
innovative
integration
in
this
not
only
leverages
benefits
resources
but
presents
cost-effective
straightforward
preparation
process,
positioning
CLS
promising
alternative
for
construction
materials
seeking
sustainable
solutions.
Journal of low frequency noise, vibration and active control,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 24, 2025
This
study
investigates
the
sound
absorption
properties
of
shredded
recycled
plastic
particles,
with
a
focus
on
how
particle
size
influences
low-frequency
acoustic
performance.
Given
growing
environmental
challenge
posed
by
waste,
this
research
aims
to
repurpose
such
materials
into
effective,
sustainable
absorbers,
contributing
both
noise
reduction
and
waste
minimization
efforts.
The
coefficients
normalized
surface
impedances
different
fractions,
ranging
from
45
µm
3
mm,
were
measured
using
standard
two-microphone
impedance
tube
method
in
accordance
ISO
10534-2.
analysis
revealed
that
smaller
sizes
significantly
enhance
absorption,
though
at
expense
maximum
coefficient
across
broader
frequency
range.
trade-off
underscores
importance
designing
tailored
specific
applications.
Results
indicate
optimal
shifts
towards
higher
frequencies
for
larger
sizes,
while
finer
particles
are
more
effective
lower
frequencies.
ability
customize
selecting
appropriate
is
key
outcome
study.
Microscopic
examination
correlation
between
morphology
performance,
irregular
shapes
enhanced
energy
dissipation.
findings
suggest
viable
option
creating
customizable
sound-absorbing
materials,
particularly
applications
where
critical.
not
only
advances
understanding
performance
but
also
supports
sustainability
goals
offering
an
innovative
use
industrial
architectural
control
solutions.
In
conclusion,
provides
foundation
development
eco-friendly,
plastics,
emphasizing
achieving
desired
properties.
