Carbohydrate Polymer Technologies and Applications,
Journal Year:
2023,
Volume and Issue:
6, P. 100340 - 100340
Published: July 1, 2023
This
research
studied
the
effects
of
pregelatinized
starch
(PST)
and
hydrolyzed
(HST)
at
various
contents
with
20
phr
glycerol
on
properties
polyvinyl
alcohol
(PVA)
film.
FTIR
analysis
showed
that
increase
HST
preferably
interacted
hydroxyl
(OH)
groups
C-H
molecules,
while
interaction
hydrogen
bonding
PST
OH
PVA,
but
did
not
affect
stretching
molecules.
The
blend
possessed
lower
overall
thermal
degradation
than
PST.
Tensile
strength
by
blending
increased
from
14
MPa
to
30
MPa,
elongation
break
decreased
a
factor
two.
On
other
hand,
blends
improved
300
(when
no
HST)
350%,
its
tensile
slightly
only
10
%
blending.
Regarding
water-soluble
properties,
starch,
PVA
hardly
any
effect
rate
dissolving
blends.
However,
chemical
structure
size
especially
in
dramatically
water.
Green Processing and Synthesis,
Journal Year:
2024,
Volume and Issue:
13(1)
Published: Jan. 1, 2024
Abstract
The
aim
of
this
study
is
to
address
the
growing
concern
about
microplastics
in
ocean
and
their
potential
harm
human
health
through
ingestion.
MPs
issue
largely
a
result
increasing
demand
for
electronic
devices
components.
To
tackle
challenge,
research
aimed
develop
green
polymer
electrolyte
that
used
glycerol
as
plasticizing
agent
improve
ionic
conductivity.
host
included
chitosan
polyvinyl
alcohol
was
composed
sodium
acetate.
evaluate
performance
electrolyte,
various
analytical
techniques
were
used,
including
impedance
electrochemical
studies.
conductivity
7.56
×
10
−5
S·cm
−1
recorded.
dielectric
property
confirmed
conduction
process
system
revealed
existence
non-Debye
type
relaxation,
indicated
by
asymmetric
peaks
tan
δ
spectra.
alternating
exhibits
three
distinguished
regions.
discovered
be
electrochemically
stable
up
2.33
V
capable
storing
energy
non-Faradaic
double-layer
capacitor
(EDLC).
cyclic
voltammetry
pattern
leaf
like
shape.
EDLC
able
charged
discharged
1
V,
it
showed
cyclability
could
low-voltage
applications.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(15), P. 2141 - 2141
Published: July 27, 2024
The
escalating
environmental
crisis
posed
by
single-use
plastics
underscores
the
urgent
need
for
sustainable
alternatives.
This
study
provides
an
approach
to
introduce
biodegradable
polymer
blends
blending
synthetic
polyvinyl
alcohol
(PVA)
with
natural
polymers—corn
starch
(CS)
and
hydroxypropyl
methylcellulose
(HPMC)—to
address
this
challenge.
Through
a
comprehensive
analysis,
including
of
structure,
mechanical
strength,
water
solubility,
biodegradability,
thermal
properties,
we
investigated
enhanced
performance
PVA-CS
PVA-HPMC
over
conventional
polymers.
Scanning
electron
microscopy
(SEM)
findings
pure
PVA
its
were
studied,
found
complete
homogeneity
between
both
types
polymers
in
case
high
concentration
PVA,
whereas
at
lower
some
granules
CS
HMPC
appear
SEM.
Blending
corn
significantly
boosts
biodegradability
soil
environments,
since
adding
50
w/w
duplicates
rate
biodegradation.
Incorporating
(HPMC)
not
only
improves
solubility
but
also
enhances
biodegradation
rates,
as
addition
HPMC
increases
from
10
100%
raises
80
100%,
highlighting
significant
acceleration
process
caused
addition,
making
these
suitable
wide
range
applications,
packaging
agricultural
films
biomedical
engineering.
properties
studied
using
diffraction
scanning
calorimetry
(DSC).
It
is
that
glass
transition
temperature
(Tg)
after
referring
improvement
molecular
weight
intermolecular
interactions
blend
molecules.
Moreover,
amorphous
structure
makes
melting
™
lessen
polymer,
so
require
remelt
be
recycled
again.
For
decrease
tensile
strength
elongation
break,
which
overall
weakens
PVA.
Our
offer
promising
pathway
development
environmentally
friendly
do
compromise
on
performance,
marking
step
forward
science’s
contribution
sustainability.
work
presents
detailed
experimental
theoretical
insights
into
novel
polymerization
methods
utilization
biological
strategies
advanced
material
design.
