Applied Sciences,
Год журнала:
2024,
Номер
14(9), С. 3582 - 3582
Опубликована: Апрель 24, 2024
Lignocellulosic-based
polymer
composites
have
gained
significant
interest
due
to
their
‘’green’’
character
as
a
response
environmental
concerns.
A
diverse
array
of
lignocellulosic
fibers
is
utilized,
depending
on
fiber
dimensions,
chemical
composition,
moisture
content,
and
the
fiber–matrix
interface.
The
aim
this
study
establish
an
alternative
standardized
methodology,
aimed
at
comparatively
estimating
performance
through
examination
individual
plant
fibers.
studied
are
ramie,
hemp,
flax,
kenaf,
HDPE-based
corresponding
were
analyzed
for
across
various
fiber-content
levels
(10,
20,
30
wt.%).
It
was
found
that
kenaf
showcases
largest
average
diameter,
succeeded
by
flax.
Additionally,
ramie
exhibit
elevated
crystallinity,
suggesting
increased
cellulose
with
having
lowest
crystallinity
index
among
compared.
Based
Thermogravimetric
analysis,
displays
content
examined
fibers,
followed
ultimately
which
recorded
highest
while,
similarly,
exhibits
mass
loss
processing
temperature
composites.
Composites
containing
smaller
diameters
higher
indexes
lower
absorptions,
such
demonstrate
superior
thermal
stability
Young’s
modulus
values
in
respective
However,
poor
interfacial
adhesion
affects
mechanical
all
Understanding
morphology,
inner
structure,
important
developing
new
composite
materials
optimizing
selection
applications.
South African Journal of Chemical Engineering,
Год журнала:
2023,
Номер
47, С. 300 - 311
Опубликована: Дек. 15, 2023
Shrimp
shell
is
the
most
significant
chitin
source
among
bio-based
materials
since
a
huge
quantity
of
crustacean
wastes
has
been
expelled
out
as
waste
material
from
various
shrimp
processing
industries/zones.
The
carapaces
were
treated
by
2M
HCl
for
demineralization
(DM),
2N
NaOH
deproteinization
(DP),
and
50%
deacetylation
(DA)
to
extract
chitosan,
without
destroying
inherent
microstructure
native
shells.
Then
grafting
was
carried
2-hydroxy
ethyl
methacrylate
(HEMA)
using
redox
initiator
K2S2O8/FeSO4
produce
environmentally
friendly
strength
bio-composite.
Meanwhile,
maximum
yield
found
when
concentration
monomer
2.55
×
10−1mol/L,
8.48
10−3mol/L,
at
70°C
whereas
value
recorded
around
73.33±0.03%.
Besides
honeycomb
chitosan
could
enhance
overall
properties
fabricated
biocomposites
mechanical
interlocking
mechanism
during
compounding.
samples
characterized
Fourier
Transform
Infrared
(FTIR),
X-ray
Diffraction
(XRD),
Thermogravimetric
Analysis
(TGA),
Scanning
Electron
Microscopy
(SEM),
solid-state
13C
Cross-Polarization
Magic-Angle-Spinning
Nuclear
Magnetic
Resonance
(CPMAS-NMR)
Tensile
Strength
(TS)
techniques.
thermo-mechanical
profile
exhibited
noteworthy
changes
on
bulk
property
CS-g-HEMA
composites.
Result
suggested
that
would
be
an
attractive
bio-composites
retains
outstanding
physicochemical,
thermomechanical,
morphological
properties.
Thus
grafted
products
significantly
utilized
in
engineering,
scale
industrial
applications
suitable
replacement
fossil
based
synthetic
ones
sustainable
environmental
protection.
Results in Engineering,
Год журнала:
2024,
Номер
22, С. 102253 - 102253
Опубликована: Май 14, 2024
Considering
its
promising
antimicrobial
and
metal
removal
capabilities,
water
filtration
systems
have
not
yet
widely
used
ionic
polymer
membranes.
A
textile
structure
made
of
Nafion
reinforced
with
Teflon
(TFRN)
was
coated
non-precious
metals
copper
silver
using
a
chemical
decomposition
technique.
Scanning
electron
microscopy
makes
it
quite
evident
that
surface
coating
formed
evenly
distributed
particles.
Water
moisture
uptake
capacity
for
Silver
(Ag)-Copper
(Cu)
membrane
reduced
by
80%
67%
respectively
compared
to
pure
membrane.
Inaddition,
Ag-Cu
showed
best
performance
against
Escherichia
coli
(ATCC25922),
Staphylococcus
aureus
(ATCC
25923)
2.04
1.7
CFU/ml
respectively,
considering
below
level
Quantification
as
1.6
CFU/ml.
Pure
at
pH
6.5,
perform
the
adsorption
studies
transition
ions
like
Copper,
Nickel,
Chromium,
Barium,
Tin
Arsenic
room
temperature.
The
maximum
ion
about
35%
Copper
followed
Nickel
(31%)
least
observed
Barium
(13.5%)
from
multi-heavy
solution.
study
revealed
potential
TFRN
purification
in
terms
microbial
process.
