Effect of alkaline treatment on the thermo-physicochemical and mechanical properties of biochar powder/Washingtonia robusta fibers/PLA hybrid biocomposites
Journal of Materials Research and Technology,
Год журнала:
2024,
Номер
33, С. 9735 - 9751
Опубликована: Ноя. 1, 2024
Язык: Английский
Use of Cold Plasma as an Alternative to Improve Corn Starch-Based Films: Effect of the Plasma Application Strategy
Processes,
Год журнала:
2024,
Номер
12(7), С. 1429 - 1429
Опубликована: Июль 9, 2024
Starch-based
biodegradable
films
are
a
type
of
packaging
material
that
can
naturally
decompose
in
the
environment.
Current
challenges
regarding
starch-based
film
applications
their
high
solubility
and
low
hydrophobicity.
Prior
studies
have
shown
plasma
application
improves
physical,
chemical,
mechanical
properties
these
films.
This
work
evaluates
strategy
process
stage
which
should
be
applied
(starch
granule,
film-forming
solution,
or
film).
Three
groups
were
produced:
produced
with
plasma-treated
starch,
by
subjecting
solution
to
treatment,
untreated
starch.
A
22
face-centered
experimental
design
was
each
group
attain
optimal
group.
The
consisted
applying
at
100,
200,
300
Hz
for
0,
10,
20
min
results
showed
significant
differences
physical-chemical
morphological
properties.
Most
chemical
changes
occurred
starch
subjected
prior
formation,
while
presented
physical
changes.
Plasma-treated
reduced
higher
Язык: Английский
Stability and Composting Behaviour of Pla-Starch Laminates Containing Active Extracts and Cellulose Fibres from Rice Straw
Опубликована: Апрель 17, 2024
The
stability
and
composting
behaviour
of
monolayers
laminates
poly(lactic
acid)
(PLA)
starch
with
without
active
extracts
cellulose
fibres
from
rice
straw
(RS)
were
evaluated.
retrogradation
the
throughout
storage
(1,
5,
10
weeks)
gave
rise
to
stiffer
less
extensible
monolayers,
lower
water
vapour
barrier
capacity.
In
contrast,
PLA
or
extract,
did
not
show
marked
changes
storage.
However,
these
more
attenuated
in
bilayers
that
gained
oxygen
capacity
during
storage,
maintaining
values
different
properties
close
initial
range.
bioactivity
films
exhibited
a
slight
decrease
antioxidant
being
better
preserved
bilayers.
All
monolayer
bilayer
fully
composted
within
90
days,
but
behaviour.
assembly
enhanced
biodegradation
whose
lag
period
about
35
days.
extract
reduced
rate
both
mono
does
limit
material
time
stablished
Standard.
Therefore,
PLA-starch
laminates,
valorised
fractions
RS,
can
be
considered
as
biodegradable
stable
materials
for
food
packaging
applications.
Язык: Английский