Journal of Vinyl and Additive Technology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 18, 2024
Abstract
A
ternary
blend
nanocomposite
composed
of
polyvinyl
alcohol/cashew
gum/polypyrrole
(PVA/CG/PPy)
with
varying
contents
copper
oxide
(CuO)
nanoparticles
was
synthesized
via
an
in
situ
polymerization
method,
using
water
as
eco‐friendly
solvent.
Fourier‐transform
infrared
spectroscopy
(FTIR),
UV–visible
spectroscopy,
field
emission
scanning
electron
microscopy
(FE‐SEM),
x‐ray
diffraction
(XRD),
thermogravimetric
analysis
(TGA),
and
differential
calorimetry
(DSC)
were
used
to
characterize
the
nanocomposites.
FTIR
spectra
demonstrated
strong
intermolecular
interactions
between
functional
groups
PVA/CG/PPy
CuO
nanoparticles.
XRD
patterns
revealed
that
nanofillers
arranged
a
structured
manner
within
matrix.
FE‐SEM
confirmed
uniform
dispersion
arrangement
at
concentration
3
wt%
TGA
DSC
results
showed
addition
improved
both
thermal
stability
glass
transition
temperature
Electrical
properties
content
up
wt%,
resulting
enhanced
conductivity,
increased
dielectric
constant,
reduced
activation
energy.
The
highest
tensile
strength,
13.76
MPa,
also
observed
this
concentration.
However,
declined
beyond
due
agglomeration,
making
ideal
for
maximum
performance.
This
study
highlights
potential
PVA/CG/PPy/CuO
nanocomposites
applications
requiring
electrical
stability,
particularly
flexible
electronics
energy
storage
devices.
Highlights
Eco‐friendly
synthesis
biopolymer
films
Improvement
morphological,
optical
films.
magnify
pristine
Conductivity
characteristics:
frequency
dependence
explored.
films:
pliable
contenders
unveiling
industrial
potentials.
Applied Organometallic Chemistry,
Journal Year:
2024,
Volume and Issue:
38(7)
Published: May 21, 2024
The
antimicrobial
properties
of
copper
ions
can
reduce
the
overgrowth
microorganisms
to
a
certain
extent.
That
reduces
amount
antibiotics
used,
avoid
superbugs
and
potential
harm.
authors
reviewed
mechanisms
copper‐containing
nanoparticles
(NPs),
focusing
on
factors
influencing
their
properties.
They
concluded
that
were
better
in
environments
conducive
precipitation
exposure
microorganisms.
Comparing
with
other
metal
leads
question
why
is
such
an
important
ion.
In
recent
years,
development
science
technology
understanding
microscopic
world,
scientists
have
skillfully
applied
various
settings,
from
direct
contact
food
breeding
hygienic
environments,
confirmed
safety
application.
However,
because
toxic
effect
NPs,
future
goal
synthesize
NP
good
biocompatibility
antibacterial
efficiency
benefit
human
society.
Materials Technology,
Journal Year:
2024,
Volume and Issue:
39(1)
Published: Aug. 8, 2024
This
study
reports
a
fast
and
simplified
chemical
reduction
method
for
synthesizing
Cu/Cu2O
nanocomposites
(NCPs)
using
sodium
borohydride
L-ascorbic
acid,
with
chitosan
or
polyvinylpyrrolidone
as
stabilizers.
Transmission
electron
microscopy
(TEM)
revealed
good
monodispersity
predominantly
spherical
morphology
of
both
PVP-stabilized
Cu
Cu2O
nanoparticles,
without
agglomeration.
X-ray
diffraction
(XRD)
analysis
confirmed
the
presence
face-centred
cubic
(fcc-Cu)
fcc-Cu2O
phases.
Nanoparticles
stabilized
by
(1%)
had
larger
sizes
(53.5
nm
26.5
Cu2O)
compared
to
those
PVP
(40.8
22.7
Cu2O).
Characteristic
absorption
peaks
NCPs
were
observed
in
UV-vis
spectra
at
581–586
380–400
Cu2O.
Both
ascorbic
acid
demonstrated
antioxidant
activity
through
DPPH
radical
scavenging.
The
antibacterial
against
Staphylococcus
aureus
Salmonella
typhi
bacteria
was
zone
inhibition
on
diffusion
disks.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(15), P. e35588 - e35588
Published: Aug. 1, 2024
Copper
and
chitosan
are
used
for
biomedical
applications
due
to
their
antimicrobial
properties.
In
this
study,
a
facile
method
the
synthesis
of
chitosan-copper
oxide
nanocomposites
(nCuO-CSs)
was
modified,
yielding
stable
colloidal
nCuO-CSs
suspensions.
Using
method,
with
different
copper-to-chitosan
(50-190
kDa)
weight
ratios
(1:0.3,
1:1,
1:3)
were
synthesized,
physicochemical
properties
characterized,
antibacterial
efficacy
assessed
against
Gram-negative
