Simultaneously improving toughness and strength for biodegradable Poly (lactic acid) modified by rice husk and acetyl tributyl citrate
Abstract
Developing
a
stiffness-toughness
balance,
low-cost,
and
biodegradable
PLA
composite
is
an
effective
strategy
for
improving
product
market
competitiveness,
reducing
dependence
on
petroleum-based
resources
protecting
the
environment.
Rice
husk
(RH)
extensively
used
as
filler
in
polymers,
but
addition
of
too
much
rice
into
has
damaged
toughness
composite.
In
this
work,
fully
composites
with
balance
low
cost
are
successfully
fabricated
through
melt
blending
PLA,
RH
acetyl
tributyl
citrate
(ATBC).
The
results
show
that
bio-based
plasticizer
ATBC
can
improve
flowability
composites,
further
enhancing
their
processability,
which
promotes
dispersion
PLA.
impact
strength
elongation
at
break
PLAC20
reach
value
100
J/m
148%,
achieving
increase
4.3
60.1
times
compared
PLAC0,
respectively.
torque
rheological
test
shows
maximum
equilibrium
arrive
25.3
N/m
2.3
N/m,
about
67.4%
63.5%
lower
than
those
PLAC0
after
incorporation
18
phr
ATBC,
respectively,
indicating
significant
improvement
processing
performance.
As
amount
increases,
water
absorption
rate
progressively
rises,
while
contact
angle
steadily
diminishes,
resulting
hydrophilicity,
thereby
broadening
its
potential
applications.
Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 5, 2024
Language: Английский
