Advanced Materials Interfaces,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 3, 2025
Abstract
The
growing
demand
for
thermochromic
materials
in
areas
such
as
food
packaging
requires
the
development
of
fast‐response
and
extended‐life
materials.
use
metal
cation‐ionic
liquid
complexes
is
increasing
due
to
easiness
tailor
their
properties,
leading
changes
response.
This
work
presents
synthesis
introduction
1‐butyl‐3‐methylimidazolium
chloride
4‐chloronickelate
([BMIm]
2
[NiCl
4
])
into
water‐based
inks.
Formulations
with
varying
concentrations
(10–40
wt.%)
are
printed
on
tags
thorugh
a
roll‐to‐roll
process
tested
between
30–45
°C.
Also,
films
one
five
layers
analyzed
color
contrast
different
encapsulating
studied
improve
films'
robustness.
optimal
films,
three
ink
40
wt.%
encapsulated
Fixomull
Transparent
present
enhanced
fast
response
time.
Red‐green‐blue
analysis
performed
these
revealing
blue/red
ratio
1.7
after
heating
at
°C
30
min.
paves
way
developing
flexible
stickers
high
contrast.
innovative
straightforward
inks'
production
compatibility
large‐scale
manufacturing
show
promising
future
cost‐effective
smart
applications,
visual
indicators
ideal
consumption
temperatures.
Encapsulated
phase
change
materials
have
gained
significant
interest
in
thermal
energy
storage
recent
years.
Herein,
novel
thermochromic
and
fluorescent
nanoencapsulated
were
developed
by
coencapsulation
of
crystal
violet
lactone,
bisphenol
A,
cetyl
alcohol
or
1-dodecanol,
hexadecane
into
poly(methyl
methacrylate)
(PMMA)
shell
cross-linked
a
coumarin
cross-linker
through
miniemulsion
polymerization.
Different
ternary
mixture
to
PMMA
ratios
selected
elucidate
their
effect
on
the
final
properties
dual
nanocapsules.
Encapsulation
core
structure
investigated
Fourier-transform
infrared
spectroscopy
proton
nuclear
magnetic
resonance
spectroscopy.
The
nanometric
size,
core–shell
morphology,
relatively
uniform
particle
size
distribution
nanocapsules
confirmed
field-emission
scanning
electron
microscopy,
transmission
dynamic
light
scattering.
Ultraviolet–visible
diffuse
reflectance
fatigue
resistance
over
10
cooling–heating
cycles,
fluorescence
illustrated
Thermal
encapsulation
efficiencies
measured
using
differential
calorimetry.
stability
prepared
was
thermogravimetric
analysis.
sample
with
3:1
ratio
encapsulated
containing
1-dodecanol
as
an
optimal
for
different
applications
due
its
high
color
rate
−16
26
°C.
optimized
used
anticounterfeiting
inks
security
documents
packaging
distinguish
between
original
products
counterfeit
counterparts.
In
addition,
they
prepare
thermal-energy-regulating
windows
coatings
buildings.
can
be
temperature
regulation
buildings
embellish
interior
spaces
architectural
design.
also
wearable
devices
that
adjust
ambient
around
body
absorbing,
storing,
releasing
amount
latent
heat
during
process.
Advanced Materials Interfaces,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 3, 2025
Abstract
The
growing
demand
for
thermochromic
materials
in
areas
such
as
food
packaging
requires
the
development
of
fast‐response
and
extended‐life
materials.
use
metal
cation‐ionic
liquid
complexes
is
increasing
due
to
easiness
tailor
their
properties,
leading
changes
response.
This
work
presents
synthesis
introduction
1‐butyl‐3‐methylimidazolium
chloride
4‐chloronickelate
([BMIm]
2
[NiCl
4
])
into
water‐based
inks.
Formulations
with
varying
concentrations
(10–40
wt.%)
are
printed
on
tags
thorugh
a
roll‐to‐roll
process
tested
between
30–45
°C.
Also,
films
one
five
layers
analyzed
color
contrast
different
encapsulating
studied
improve
films'
robustness.
optimal
films,
three
ink
40
wt.%
encapsulated
Fixomull
Transparent
present
enhanced
fast
response
time.
Red‐green‐blue
analysis
performed
these
revealing
blue/red
ratio
1.7
after
heating
at
°C
30
min.
paves
way
developing
flexible
stickers
high
contrast.
innovative
straightforward
inks'
production
compatibility
large‐scale
manufacturing
show
promising
future
cost‐effective
smart
applications,
visual
indicators
ideal
consumption
temperatures.
