Forests,
Journal Year:
2023,
Volume and Issue:
14(6), P. 1250 - 1250
Published: June 15, 2023
Whole-biomass
adhesives
are
the
research
hotspot
of
wood
andcan
improve
competitiveness
adhesives.
The
tannin–sucrose
adhesive
studied
by
our
group
shows
good
bonding
performance,
but
poor
stability
induced
low
viscosity.
In
this
study,
was
modified
isolated
soybean
protein
(SPI),
effect
SPI
substitution
ratio
for
tannin
on
properties
tannin–sucrose–SPI
composite
investigated,
and
mechanism
explored
using
Fourier-transform
infrared
spectroscopy
(FT-IR),
thermogravimetry
(TG),
X-ray
diffraction
(XRD),
gas
chromatography–mass
(GC–MS).
results
showed
that:
(1)
when
above
40%,
viscosity
increased
significantly,
which
effectively
avoided
leakage.
(2)
displayed
high
performance
water
resistance.
(3)
FTIR
GC–MS
revealed
that
curing
very
complicated,
it
certain
conversion
sucrose
into
furan
compounds,
especially
5-hydroxymethylfurfural
(5-HMF),
core
cross-linking
reaction
elevating
temperature.
(4)
macromolecules
reactivity
compensated
shortage
temperature
required
furanic
cross-linkers
so
experienced
an
efficient
at
a
temperature,
degree
thermal
product
increased.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 2, 2024
Abstract
The
development
of
multifunctional
bio‐adhesive
plays
a
critical
role
in
achieving
sustainable
society,
where
the
intrinsic
sensitivity
to
water
and
poor
dynamics
severely
bottlenecks
its
scale‐up
application.
Inspired
by
microstructure
dragonfly
wings,
strong
tough
adhesive
with
excellent
reprocessability
is
designed
developed
creating
dynamic
network
consisting
lignin
polyurea
(LPU)
framework
soybean
protein
(SP).
LPU
act
as
rigid
nervures
slow
crack
propagation
transfer
stress,
while
SP
dissipate
strain
energy
through
interplay
from
graded
hydrogen
imine
bonds
generated
between
SP.
achieves
significant
enhancements
fracture
toughness
resistance
≈7
23
folds,
respectively,
compared
Furthermore,
capacity
for
diffusion
restoration
endows
superior
reprocessability,
enabling
recycled
particleboard
achieve
high
retention
modules
(over
80%).
This
approach
offers
promising
eco‐friendly
alternative
conventional
petrochemical
adhesive.
Forests,
Journal Year:
2023,
Volume and Issue:
14(1), P. 84 - 84
Published: Jan. 2, 2023
The
high
demand
for
wood-based
composites
generates
a
greater
use
of
wood
adhesives.
current
industrial
challenge
is
to
develop
modified
synthetic
adhesives
remove
harmful
formaldehyde,
and
test
natural
scope
the
research
included
manufacturing
high-density
fiberboards
(HDF)
using
binders
such
as
polylactic
acid
(PLA),
polycaprolactone
(PCL),
thermoplastic
starch
(TPS)
with
different
resination
(12%,
15%,
20%).
HDF
biopolymers
was
compared
reference
HDF,
manufactured
following
example
technology,
commonly
used
urea-formaldehyde
(UF)
resin.
Different
mechanical
physical
properties
were
determined,
namely
modulus
rupture
(MOR),
elasticity
(MOE),
internal
bonding
strength
(IB),
thickness
swelling
(TS),
water
absorption
(WA),
surface
(SWA),
contact
angle,
well
density
profile;
scanning
electron
microscope
(SEM)
analysis
also
performed.
results
showed
that
increasing
binder
content
significantly
improved
panels
in
case
(MOR
from
31.35
N
mm−2
40.10
mm−2,
IB
0.24
0.39
dry
starch),
reduces
these
PLA
PCL.
wet
method
addition
panels;
however,
it
negatively
influenced
reaction
(WA
90.3%
105.9%
after
24
h
soaking).
Due
dynamically
evaporating
solvents
PCL
binding
mixtures,
development
fibers’
(blending)
techniques
should
be
performed,
avoid
uneven
spreading
over
resinated
material.
Journal of Composites Science,
Journal Year:
2025,
Volume and Issue:
9(2), P. 67 - 67
Published: Feb. 2, 2025
This
study
focuses
on
the
development
of
an
insulation
biocomposite
using
Doum
palm
(Chamaerops
humilis)
fibers
reinforced
with
a
natural
binder
based
citric
acid
and
glycerol.
The
main
objective
is
to
optimize
thermal
conductivity
mechanical
properties
as
function
fiber
preparation
(short
or
powdered
fibers)
content
(20%,
30%
40%),
relate
them
bonding
binder.
obtained
results
suggest
that
addition
greatly
enhances
density,
compressive
strength
Young’s
modulus
biocomposites.
More
specifically,
20%
by
weight
acid/glycerol
improves
bond
between
fibers,
whether
they
are
short
powders.
leads
increase
in
properties,
reaching
(212.1)
MPa
at
(24.3)
MPa.
On
other
hand,
show
these
biocomposites
also
have
acceptable
performance,
achieving
(0.102)
W/(m·K),
making
suitable
for
variety
applications
sustainable
buildings
refurbishment.
