Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Dec. 28, 2024
Physical
and
photophysical
properties
of
starch-based
biopolymer
films
containing
5-(4-nitrophenyl)-1,3,4-thiadiazol-2-amine
(NTA)
powder
as
a
nanofiller
were
examined
using
atomic
force
microscopy
(AFM),
Fourier-transform
infrared
spectroscopy
(FTIR),
stationary
UV-Vis
fluorescence
well
resonance
light
scattering
(RLS)
time-resolved
measurements,
where
possible,
analyzed
with
reference
to
pristine
NTA
solutions.
AFM
studies
revealed
that
the
addition
into
starch
did
not
significantly
affect
surface
roughness,
all
displaying
similar
Sq
values
ranging
from
70.7
nm
79.7
nm.
Similarly,
Young's
modulus
measurements
showed
no
significant
changes
after
incorporating
1,3,4-thiadiazole.
Adhesion
water
contact
angle
assessments
demonstrated
maintained
high
hydrophilicity
(water
wetting)
across
films.
Color
analysis
corroborated
anticipated
trend,
showing
increasing
additive
content
resulted
in
decreased
lightness
increased
yellowness.
Interestingly,
however,
while
polar
isopropanol
solvent
at
low
concentration,
shows
typical
single-band
emission,
centered
410
slight
enhancement
band
on
long-wavelength
side
around
530
nm,
its
incorporation
matrices
results
appearance
dual
signal
maxima
430
Concentration-dependence
emission
experiments,
demonstrating
even
increase
amount
solution,
an
additional,
weak
emerged
within
spectral
range
corresponding
intensive
film,
along
performed
quantum-chemical
studies,
including
both
monomeric
aggregated
(dimer
trimer)
models,
conclusively
unveil
observed
starch/NTA
is
due
molecular
aggregation
effects
resulting
aggregation-induced
emission.
This
study
underscores
potential
biobased
polymer
films,
furnishing
them
new
features
without
substantially
altering
their
thus
enabling
extended
applications.
Encyclopedia of Polymer Science and Technology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 33
Published: Nov. 30, 2024
Abstract
An
extensive
review
of
the
polymer
reactive
extrusion
(REX)
literature
is
provided
with
emphasis
on
use
twin‐screw
extruders.
Elements
highlighted
include
innovative
REX
processes
involving
free
radicals
as
well
catalytic
reaction
types.
effort
made
to
group
all
recent
research
activities
into
two
broad
categories.
The
first
one
includes
applications
in
traditional
area
polyolefin
modifications
while
second
covers
numerous
studies
recently
exploding
multicomponent
sustainable
plastic
products,
including
blends
and
composites.
Biomass-derived
materials
are
becoming
increasingly
crucial
in
the
advancement
of
sustainable
functional
materials.
Lignin,
a
naturally
occurring
aromatic
biopolymer
derived
from
plants,
offers
significant
benefits
such
as
cost
efficiency,
biocompatibility,
and
biodegradability,
making
it
focal
point
research
application
across
various
domains.
As
cross-linked
polymer,
lignin
possesses
numerous
hydrophilic
active
groups
that
facilitate
development
lignin-based
hydrogels
(LFHs).
Recent
studies
have
made
notable
contributions
to
design,
fabrication,
hydrogels,
thereby
enhancing
their
potential
purpose-specific
This
perspective
presents
comprehensive
overview
fabrication
strategies
emerging
applications
LFHs,
covering
roles
water
treatment,
smart
responsive
materials,
wound
dressings,
wearable
flexible
supercapacitors/electronics.
Additionally,
challenges
limitations
inherent
these
rooted
polymer
structure
chemistry,
discussed.
work
aims
pave
way
for
future
advancements
design
sustainability
ultimately
expanding
possibilities
biobased
hydrogels.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(9), P. 1290 - 1290
Published: May 4, 2024
Biopolymers
are
biodegradable
and
renewable
can
significantly
reduce
environmental
impacts.
For
this
reason,
biocomposites
based
on
a
plasticized
starch
cross-linker
matrix
with
microfibrillated
OCC
cardboard
cellulose
reinforcement
were
developed.
Biocomposites
prepared
by
suspension
casting
varied
amounts
of
cellulose:
0,
4,
8,
12
wt%.
Polyethylene
glycol
diglycidyl
ether
(PEGDE)
was
used
as
cross-linking,
water-soluble,
non-toxic
agent.
Microfibrillated
(MFC)
from
showed
appropriate
properties
potential
for
good
performance
reinforcement.
In
general,
microfiber
incorporation
cross-linking
increased
crystallization,
reduced
water
adsorption,
improved
the
physical
tensile
starch.
cross-linked
PEGDE
reinforced
wt%
MFC
best
properties.
The
chemical
structural
changes
induced
chains
confirmed
FTIR,
NMR,
XRD.
Biodegradation
higher
than
80%
achieved
most
in
15
days
laboratory
compost.
Journal of Reinforced Plastics and Composites,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 19, 2024
Preparation
of
high
starch
containing
LLDPE
(linear
low-density
polyethylene)/starch
composite
with
a
considerable
degree
mechanical
properties
has
always
been
challenge
for
long
time.
These
challenges
are
low
thermal
stability
starch,
difficulties
in
processability
LLDPE,
inability
polymers
to
contain
large
quantities
and
compromised
prepared
composites.
To
overcome
these
difficulties,
20
wt%
ENGAGE
(ethylene-octene
copolymer),
polyolefin
elastomer,
was
blended
80
followed
by
composites
preparation
modified
starch-pistachio
shell
powder
(SPSP).
ENGAGE,
due
its
unique
processability,
improved
the
SPSP-containing
composite.
And
generation
extra
space
amorphous
LLDPE/ENGAGE
blends
could
accommodate
up
70
SPSP
without
any
degradation
during
high-temperature
processing.
Mechanical
were
also
considerably
enhanced
reinforcement
polymer
matrix
pistachio
(PSP).
SEM
dynamic
analysis
(DMA)
confirmed
structural
integrity
processed
uniform
dispersion
into
blends.
The
obtained
LLDPE-based
70%
biodegradability
around
240%
elongation
useful.
It
is
revealed
that
presence
PSP
inhibits
electron
beam-initiated
instead
leading
crosslinked
network
composites,
thus
further
enhancing
properties.
