ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(44), P. 16165 - 16174
Published: Oct. 21, 2024
Previous
studies
aiming
to
achieve
sustainability
in
adhesive
materials,
primarily
focused
on
the
integration
of
bioderived
or
biodegradable
components.
However,
existing
sustainable
adhesives
often
prioritize
permanent
adhesion
over
removability,
which
limits
their
recyclability.
Herein,
we
introduce
an
innovative
approach
for
producing
scalable,
biodegradable,
and
removable
hot-melt
adhesives,
offering
sustainability.
Polybutylene
succinate
(PBS)
was
selected
as
base
polymer
because
its
excellent
melt
processability,
biodegradability,
commercial
availability.
To
impart
adhesiveness,
three
biomass-derived
tackifiers
were
incorporated;
basic
rosin,
disproportionated
rosin
ester.
The
use
a
twin-screw
extruder
enabled
efficient
mixing
large-scale
production
at
kilogram
scale.
Our
investigation
revealed
that
exhibited
optimal
compatibility
wettability,
attributed
high
acid
value.
value
promoted
rapid
crystallization
minimized
crystal
defects.
A
correlation
between
behavior
strength
also
established,
identifying
composition.
composition
yields
satisfactory
(2.5
N/25
mm)
makes
it
suitable
repositionable
adhesives.
Additionally,
our
optimized
sufficient
biodegradability
completely
decomposed
by
lipase
within
21
d,
has
not
been
observed
previous
studies.
This
study
provides
practical
pathway
enhancing
with
potential
further
advancements
tailoring
diverse
applications
future
research.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(23), P. 3263 - 3263
Published: Nov. 23, 2024
Structural
adhesives
are
bonding
materials
that
can
quickly
join
structures
with
components
and
repair
cracks.
However,
thermosetting
polyurethane
structural
suffer
from
disadvantages
such
as
insufficient
toughness,
poor
aging
resistance,
long
curing
time,
which
greatly
limit
their
practical
application.
Herein,
a
(PU)
composite
excellent
mechanical
properties
was
prepared
successfully
via
regulating
the
cross-linking
structure
dispersion
of
core-shell-rubber
(CSR)
particles.
Various
polyols
were
selected
to
improve
density
PU
enhance
intermolecular
forces,
achieve
high
strength
stability
composites.
Solvent
displacement
used
CSR
in
PU.
The
cured
has
ultra-high
toughness
impact
resistance
due
well-dispersed
increased
52.0
90.4
kJ/m2,
elongation
at
break
6.1%
14.9%.
Due
addition
catalyst
T120,
this
be
room
temperature,
reaching
after
30
min.
In
addition,
these
composites
resist
extreme
environments,
low
temperature
changes,
UV
aging,
humidity
heat
environment,
salt
spray
potential
value
for
adhesive
meet
requirements
transit
production
efficiency.
This
work
proposed
novel
strategy
prepare
Polymer,
Journal Year:
2024,
Volume and Issue:
311, P. 127485 - 127485
Published: Aug. 12, 2024
The
recent
advent
of
the
radical
thiocarbonyl
addition–ring-opening
(TARO)
copolymerization
thionolactones
with
vinyl
monomers
enables
production
degradable
thioester
backbone-functional
copolymers
promising
for
recycling
and
biomedical
applications.
To
better
understand
behaviour
prototypical
thionolactone,
dibenzo
[c,e]oxepin-5(7H)-thione
(DOT),
three
S-
P-vinyl
comonomers,
phenyl
sulfide
(PVS),
sulfone
(PVSO),
diethyl
vinylphosphonate
(DEVP)
were
prepared
through
free
RAFT
polymerizations.
In
all
cases,
DOT
was
incorporated
faster
than
comonomers
which
led
to
up
89
mol-%
content—surprising
in
light
past
reports
significant
retardation
high
feeds.
All
proved
readily
degradable.
A
postpolymerization
oxidation
enabled
conversion
a
DOT–PVS
copolymer
into
corresponding
DOT–PVSO
species
that
remained
offered
synthetic
strategy
prepare
compositions
not
accessible
direct
copolymerization.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(44), P. 16165 - 16174
Published: Oct. 21, 2024
Previous
studies
aiming
to
achieve
sustainability
in
adhesive
materials,
primarily
focused
on
the
integration
of
bioderived
or
biodegradable
components.
However,
existing
sustainable
adhesives
often
prioritize
permanent
adhesion
over
removability,
which
limits
their
recyclability.
Herein,
we
introduce
an
innovative
approach
for
producing
scalable,
biodegradable,
and
removable
hot-melt
adhesives,
offering
sustainability.
Polybutylene
succinate
(PBS)
was
selected
as
base
polymer
because
its
excellent
melt
processability,
biodegradability,
commercial
availability.
To
impart
adhesiveness,
three
biomass-derived
tackifiers
were
incorporated;
basic
rosin,
disproportionated
rosin
ester.
The
use
a
twin-screw
extruder
enabled
efficient
mixing
large-scale
production
at
kilogram
scale.
Our
investigation
revealed
that
exhibited
optimal
compatibility
wettability,
attributed
high
acid
value.
value
promoted
rapid
crystallization
minimized
crystal
defects.
A
correlation
between
behavior
strength
also
established,
identifying
composition.
composition
yields
satisfactory
(2.5
N/25
mm)
makes
it
suitable
repositionable
adhesives.
Additionally,
our
optimized
sufficient
biodegradability
completely
decomposed
by
lipase
within
21
d,
has
not
been
observed
previous
studies.
This
study
provides
practical
pathway
enhancing
with
potential
further
advancements
tailoring
diverse
applications
future
research.
