L-Arginine-Functionalized Chitosan/Poly(Vinylpyrrolidone) Composite as a Novel Adsorbent for Efficient Removal of Hg (II) and Amoxicillin from Aqueous Medium
Journal of Polymers and the Environment,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 8, 2025
Язык: Английский
Cast Extruded Films Based on Polyhydroxyalkanoate/Poly(lactic acid) Blend with Herbal Extracts Hybridized with Zinc Oxide
Polymers,
Год журнала:
2024,
Номер
16(14), С. 1954 - 1954
Опубликована: Июль 9, 2024
The
aim
of
the
presented
work
was
to
functionalize
a
blend
based
on
polyhydroxyalkanoate
(PHA):
poly(hydroxybutyrate
(PHB)
with
poly(lactic
acid)
(PLA)
and
mixture
three
selected
herb
extracts,
namely,
Язык: Английский
Absorption of Ajwain Essential Oil on Chitosan to Enhance Antibacterial Activity of Polyethylene-based Composite Food Packaging Films
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 25, 2024
Abstract
In
this
research,
we
prepared
an
antibacterial
packaging
composite
film
for
food
packaging.
Ajwan
essential
oil
(AEO)
was
adsorbed
onto
chitosan
(CS)
particles,
which
were
loaded
in
a
combination
of
low-density
polyethylene
(LDPE),
linear
(LLDPE),
and
graft-maleic
anhydride
(PEma,
4%).
Gas
chromatography
(GC)
results
confirmed
successful
AEO
adsorption
on
with
protection
from
evaporation
during
the
formation
process.
Additionally,
inhibition
zone
(IZ)
tests
demonstrated
increased
activity
film.
Mechanical
revealed
that
incorporation
decreased
tensile
strength
but
elongation
at
break,
while
CS
reduced
break.
particles
PE-7.5-0
(910
cm³/m²·day·bar)
oxygen
permeability
compared
to
PE-0-0
(1680
cm³/m²·day·bar),
adding
(PE-0-10,
2200
cm³/m²·day·bar).
The
indicated
synergistic
inhibitory
effect
AEO.
containing
7.5%
10%
(PE-7.5-10)
exhibited
suitable
mechanical
properties
improved
behavior
due
CS.
Consequently,
it
can
be
considered
candidate
Язык: Английский
Improving the antibacterial properties of polyethylene food packaging films with Ajwain essential oil adsorbed on chitosan particles
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Ноя. 20, 2024
The
aim
of
this
research
is
to
develop
a
composite
antibacterial
film
for
food
packaging
using
low-density
polyethylene
(LDPE),
linear
(LLDPE),
polyethylene-graft-maleic
anhydride
(PE-g-MA),
and
incorporating
chitosan
(CS)
particles
onto
which
ajwan
essential
oil
(AEO)
adsorbed.
films
were
characterized
various
techniques,
including
Fourier-transform
infrared
spectroscopy
(FTIR),
Gas
chromatography/mass
(GC-MS),
X-ray
diffraction
(XRD),
tensile
testing,
oxygen
transmission
rate
(OTR),
thermogravimetric
analysis
(TGA),
scanning
electron
microscopy
(SEM),
assays.
FTIR
results
confirmed
the
presence
CS
and/or
AEO
in
films.
Mechanical
testing
indicated
decrease
strength
an
increase
elongation
at
break
with
addition
AEO,
while
reduced
elongation.
In
sample
containing
only
7.5%
(PE-7.5-0),
permeability
was
910
cm2/m2·day·bar
due
CS.
However,
inclusion
(PE-0-10)
increased
2200
cm2/m2·day·bar,
higher
than
that
control
(PE-0-0)
1680
cm2/m2·day·bar.
activity
demonstrated
synergistic
inhibitory
effect
AEO.
Data
from
GC-MS
inhibition
zone
(IZ)
tests
alone
does
not
exhibit
significant
its
incorporation
bulk
film,
combination
enhances
efficacy.
This
enhancement
occurs
as
adsorbed
protected
evaporation
during
formation
process.
Overall,
findings
suggest
PE-7.5-10,
possesses
suitable
mechanical
properties
activity,
could
be
effective
candidate
applications.
Язык: Английский
Antibacterial and Anti‐Inflammatory Activity of Chitosan Film with Rhodomyrtus Tomentosa Leaf Extract Prepared Via 3D‐Printing Method
ChemistryOpen,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 22, 2024
Abstract
The
combination
of
natural
polymers
and
plant
extract
attracted
much
attention
thanks
to
its
valuable
biological
activities.
This
study
presents
the
preparation
characterization
chitosan
(CS)
film
containing
Rhodomyrtus
tomentosa
leaf
extract.
In
which,
(SLE)
with
polyphenol‐rich
fractions
was
extracted
by
an
ultrasonic‐assisted
extraction
method.
prepared
chitosan/polyphenol‐rich
(CSPPF)
characterized
using
infrared
(IR)
spectroscopy,
mechanical
testing,
scanning
electron
microscopy
(SEM),
water
absorption
analysis.
Antibacterial
anti‐inflammatory
activities
CSPPF
were
assessed
agar
well
diffusion
method
nitric
oxide
(NO)
inhibition
assays,
respectively.
Besides,
release
from
as
drug
kinetics
also
tested.
enhanced
antibacterial
efficacy
against
Escherichia
coli
activity
swelling
ability
CSPPF.
1
wt.%
SLE
can
inhibit
77.70
%
NO
IC
50
value
19.40
μg/mL.
Язык: Английский
New Composite Materials Based on PVA, PVP, CS, and PDA
Polymers,
Год журнала:
2024,
Номер
16(23), С. 3353 - 3353
Опубликована: Ноя. 29, 2024
In
this
work,
new
materials
based
on
the
blends
of
polyvinyl
alcohol
(PVA),
pyrrolidone
(PVP),
chitosan
(CS),
and
polydopamine
(PDA)
have
been
prepared.
Fourier
Transform
Infrared
Spectra
conducted
to
verify
presence
individual
components
in
composite
materials.
EDX
elemental
analysis
showed
a
clear
view
element’s
materials,
with
maximum
values
for
carbon
oxygen.
Atomic
force
microscopy
(AFM)
was
used
observe
surface
topography
measure
roughness.
case
polymers,
CS
presented
higher
value
roughness
(Rq
=
3.92
nm
Ra
3.02
nm),
found
be
lowest
it
2.34
0.95
nm).
PVA
films
roughness,
which
3.38
2.11
composites,
highest
PVA,
PVP,
CS,
11.91
8.71
After
addition
polymeric
reduction
observed
7.49
5.15
The
than
that
polymers.
PDA
(PVA/PVP/CS)
led
decrease
Young’s
modulus.
elongation
percentage
PVA/PVP/CS/PDA
blend
without
(9.80%
vs.
5.68%
PVA/PVP/CS).
hydrophilic.
results
from
MTT
assay
all
tested
specimens
are
non-toxic,
manifested
by
significant
increase
viability
L929
cells
compared
control
cells.
However,
additional
studies
required
check
biocompatibility
samples.
Язык: Английский