Akta Kimia Indonesia,
Journal Year:
2024,
Volume and Issue:
9(2), P. 148 - 148
Published: Dec. 31, 2024
Peningkatan
penggunaan
popok
bayi
setiap
tahun
menyebabkan
masalah
limbah
yang
tidak
dapat
terdegradasi
secara
alami.
Limbah
ini
memiliki
potensi
untuk
dimanfaatkan
kembali
menjadi
material
bernilai,
seperti
selulosa
dalam
Superabsorbent
Polymer
(SAP)
diubah
hidrofobik
mengatasi
tumpahan
minyak
di
perairan.
Penelitian
bertujuan
memodifikasi
permukaan
dari
menggunakan
asam
stearat
sebagai
absorben
hidrofobik,
melalui
tiga
tahapan:
preparasi,
pemisahan
selulosa,
dan
modifikasi
dengan
variasi
5,
6,
7
gram
(V
1
,
V
2
3
).
Pemisahan
nitrat
asetat
menghasilkan
rendemen
sebesar
87%.
Water
Contact
Angle
(WCA)
termodifikasi
menunjukkan
nilai
108,552°,
124,327°,
127,980°
berturut-turut
berarti
terkonfirmasi
sifat
hidrofobik.
Absorben
kapasitas
penyerapan
3,129
g/g,
0,523
0,329
0,296
g/g
efisiensi
masing-masing
0,43%,
0,38%,
0,37%,
lebih
rendah
dibandingkan
mencapai
1,63%.
Namun,
konsentrasi
terserap
pada
parameter
uji
oli
mesin
adalah
59,34%,
60,13%,
96,84%,
jauh
tinggi
hanya
7,39%.
Variasi
paling
unggul
berdasarkan
WCA
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(6), P. e27715 - e27715
Published: March 1, 2024
In
order
to
accommodate
the
increased
demand
for
innovative
materials,
intensive
research
has
focused
on
natural
resources.
pursuit
of
advanced
substances
that
exhibit
functionality,
sustainability,
recyclability,
and
cost-effectiveness,
present
work
attempted
an
alternative
study
cellulose
nanofibers
derived
from
sugar
palm
fiber.
Leveraging
approach
involving
ionic
liquid
(IL)
pre-treatment,
bleaching,
wet
disc
mill
technique,
nano-fibrillated
(NFC)
was
successfully
obtained
fiber
source.
Remarkably,
96.89%
were
extracted
fiber,
demonstrating
process's
efficacy
scalability.
Further
investigation
revealed
(SPNFC)
exhibited
a
surface
area
3.46
m2/g,
indicating
significant
interface
enhanced
functionality.
Additionally,
analysis
unveiled
average
pore
size
4.47
nm,
affirming
its
suitability
various
applications
necessitate
precise
filtration.
Moreover,
charge
densities
SPNFC
found
be
−32.1
mV,
offering
opportunities
modification
interactions
with
materials.
The
remarkable
thermal
stability,
enduring
temperatures
up
360.5
°C.
isolation
process
is
evident
in
rise
crystallinity
index,
escalating
50.97%
raw
fibers
61.62%
These
findings
shed
light
vast
potential
distinct
features
SPNFC,
opening
path
application
wide
array
industries,
including
but
not
limited
biomedicine,
environmental
engineering.
Journal of Polymers and the Environment,
Journal Year:
2024,
Volume and Issue:
32(9), P. 4589 - 4612
Published: April 13, 2024
Abstract
A
new
adsorbent,
starch
grafted
polyacrylic
acid
copolymer
with
polyacrylamide
(SG@AA-co-AM),
was
synthesized
using
free
radical
polymerization
techniques.
Proton
nuclear
magnetic
resonance
(
1
H
NMR),
Fourier-transform
infrared
spectrophotometry
(FTIR),
X-ray
diffraction
analysis
(XRD),
thermogravimetric
(TGA),
scanning
electron
microscopy
(SEM),
particle
size
distribution
(PSD),
and
fluorescent
(FEM)
were
employed
to
elucidate
the
structure,
crystalline
nature,
thermal
stability,
surface
morphology
of
SG@AA-co-AM.
SG@AA-co-AM
utilized
as
an
adsorbent
for
removal
Victoria
green
B
(VGB)
dye
from
wastewater.
exhibited
a
percentage
(%
R)
97.6%
towards
VGB
under
optimized
conditions:
contact
time
30
min,
temperature
25
°C,
dose
20
mg,
pH
8,
concentration
solution
ppm,
volume
mL.
The
point
zero
charge
(PZC)
determined
be
5.2.
Nonlinear
pseudo-second-order
(PSO)
Langmuir
adsorption
isotherm
models
best
fitted
experimental
data,
regression
coefficients
(R
2
)
0.95
0.99,
respectively.
results
confirmed
chemi-sorption
monolayer
onto
Thermodynamic
studies
revealed
that
is
endothermic
spontaneous.
Furthermore,
regeneration
experiment
showed
decline
3.9%
after
five
cycles,
confirming
economical
reusable
nature
Electronic Materials,
Journal Year:
2024,
Volume and Issue:
5(4), P. 189 - 203
Published: Sept. 26, 2024
Polymer
composites
are
engineered
materials
that
combine
polymers
with
diverse
fillers
to
enhance
their
physicochemical
properties.
The
electrical
conductivity
of
polymer
is
a
vital
characteristic
significantly
broadens
use,
particularly
in
electronic
applications.
addition
ionic
liquids
into
represents
new
method
functional
properties,
terms
conductivity.
In
this
brief
review,
several
matrices,
conductive
fillers,
and
utilized
categorized.
Additionally,
the
effect
on
concisely
explained.
This
review
gives
information
increases
understanding
containing
liquids.
summary,
most
studies
show
adding
enhances
regardless
matrix
or
filler
type.
enhancement
due
improving
dispersion
promoting
creation
effective
three-dimensional
networks
within
matrix,
thus
boosting
electron
transport
mobility
throughout
structure.
provides
insights
behavior
composite
systems,
highlighting
role
properties
for
advanced
It
encourages
innovation
next-generation
assists
future
research
development
more
efficient
electronics.
