ChemistrySelect,
Journal Year:
2024,
Volume and Issue:
10(1)
Published: Dec. 31, 2024
Abstract
In
this
study,
carboxymethyl
chitosan
(CMCS)‐based
biodegradable
films
were
prepared
by
blending
with
polyvinyl
alcohol
(PVA)
in
water
and
characterized
for
their
potential
application
as
innovative
food
packaging
materials.
Blends
of
CMCS
PVA
polymer
solutions
cast
dried
at
50
°C
48
hours
to
obtain
a
flexible
transparent
film.
The
different
composition
using
various
techniques
including
Fourier‐transform
infrared
spectroscopy
(FTIR),
X‐ray
diffraction
(XRD),
tensile
strength
(TS),
scanning
electron
microscopy
(SEM),
Thermogravimetric
analysis
(TG).
FTIR
confirmed
the
successful
incorporation
groups
into
molecules,
indicating
modification
chitosan.
XRD
pattern
indicates
an
amorphous
phase
films.
SEM
images
film
surfaces
show
uniform
structure
containing
no
cracks
or
holes
revealing
that
both
had
good
compatibility
unique
film‐forming
ability.
CMCS/PVA
demonstrated
superior
performance
compared
conventional
synthetic
materials,
low
vapor
transmission
rate
(53.46
g/m
2
/h),
(10.8
MPa),
elongation
break
(20.36%).
Practical
tests
showed
coating
green
chilies
reduced
loss
20%
uncoated
chilies,
effectively
enhancing
shelf
life.
Polymer Engineering and Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 18, 2025
Abstract
In
this
work,
irradiation
resistance,
thermal,
and
structural
characteristics
of
Bi
2
O
3
‐reinforced
poly
ε‐caprolactone/chitosan
composites
for
nuclear
shielding
applications
were
studied.
PCL/CTS/Bi
composite
films
prepared
by
using
different
amounts
(0.5%–4.0%
(w/v)).
The
radiation
parameters
the
synthesized
both
experimentally
theoretically
measured
at
high
energy
region.
equivalent
dose
rates
film
samples
a
fast
neutron
source.
Also,
to
determine
irradiated
with
Am‐241
Co‐60
sources
30
days.
MFP
values
80.99
keV
changed
approximately
61%
in
PCL/CTS
PCL/CTS/4%
.
results
show
that
content
increases
gamma
abilities
films.
According
TGA
results,
thermal
stability
polymer
is
increased
addition
blend
film.
materials
can
be
used
as
protective
coating
shielding.
Highlights
solvent
casting
method.
increasing
amount.
LAC
MAC
have
effect.
