This
review
paper
examines
the
innovative
use
of
liquid
crystals
(LCs)
as
phase
change
materials
in
thermal
energy
storage
systems.
With
rising
demand
for
efficient
storage,
LCs
offer
unique
opportunities
owing
to
their
tunable
transitions,
high
latent
heat,
and
favorable
conductivity.
covers
various
types
LCs,
such
nematic,
smectic,
cholesteric
phases,
roles
enhancing
storage.
It
discusses
mechanisms
LC
transitions
impact
on
efficiency.
Strategies
improve
conductivities
polymers
have
also
been
explored.
One
method
involves
embedding
units
within
molecular
structure
promote
orderly
arrangement,
facilitate
heat
flow,
reduce
phonon
scattering.
Aligning
polymer
chains
through
external
fields
or
mechanical
processes
significantly
improves
intrinsic
The
inclusion
thermally
conductive
fillers
optimization
filler-matrix
interactions
further
boost
performance.
Challenges
related
scalability,
cost-effectiveness,
long-term
stability
LC-based
are
addressed,
along
with
future
research
directions.
synthesizes
current
knowledge
identifies
gaps
literature,
providing
a
valuable
resource
researchers
engineers
develop
advanced
technologies,
contributing
sustainable
solutions.
Resources Conservation and Recycling,
Год журнала:
2024,
Номер
209, С. 107807 - 107807
Опубликована: Июль 17, 2024
In
this
study,
we
conducted
LCA
on
the
environmental
impacts
of
recycling
LDPE
films
within
two
system
boundaries.
System
boundary
1
analysed
operations
a
company
producing
recycled
granules.
The
results
were
comparable
to
literature,
yielding
0.44
kg
CO2-eq./kg
LDPE.
Polymer
testing
revealed
that
foil
products
had
higher
mass
per
product
than
virgin
materials
compensate
for
inferior
material
properties.
2
was
modelled
analyse
existing
film
products,
incorporating
both
and
using
data
from
1,
fulfil
same
function.
Due
incineration
at
products'
end
life,
some
showed
climate
change
footprint,
due
additional
mass.
Accordingly,
idea
threshold
called
break-even
introduced,
indicating
maximum
surplus
low-quality
recyclate
usable
achieve
impact
purely
competitor.
Gels,
Год журнала:
2025,
Номер
11(5), С. 329 - 329
Опубликована: Апрель 28, 2025
This
study
reports
the
synthesis
and
characterization
of
a
novel
carboxymethyl
cellulose-N-fullerene-g-poly(co-acrylamido-2-methyl-1-propane
sulfonic
acid)
(CMC-N-fullerene-AMPS)
hydrogel
for
potential
application
in
biosensing
within
food
packaging.
The
was
synthesized
via
free
radical
polymerization
characterized
using
FTIR,
SEM,
fluorescence
microscopy.
FTIR
analysis
confirmed
successful
grafting
AMPS
incorporation
N-fullerenes,
indicated
by
characteristic
peaks
shift
N-H/O-H
stretching
frequency.
Density
Functional
Theory
(DFT)
calculations
revealed
that
CMC-N-fullerene-AMPS
exhibited
higher
stability
lower
band
gap
energy
(0.0871
eV)
compared
to
CMC-AMPS
hydrogel,
which
means
high
reactivity
CMC-N-fullerene-AMPS.
N-fullerenes
significantly
enhanced
hydrogel's
antibacterial
activity,
demonstrating
22
mm
inhibition
zone
against
E.
coli
24
S.
aureus,
suggesting
active
packaging
applications.
Critically,
displayed
unique
"turn-on"
response
presence
bacteria,
with
distinct
color
changes
observed
upon
interaction
(orange-red)
aureus
(bright
green).
enhancement,
coupled
porous
morphology
SEM
(pore
size
377-931
µm),
suggests
this
as
sensing
platform
bacterial
contamination
These
combined
properties
activity
distinct,
bacteria-induced
signal
make
promising
candidate
developing
intelligent
materials
capable
detecting
spoilage.
