Journal of Applied Polymer Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 17, 2025
ABSTRACT
High‐performance
thermal
insulation
is
critically
needed
in
applications
where
heat
transfer
must
be
substantially
minimized.
Traditional
insulating
materials,
whether
organic
or
inorganic,
often
suffer
from
instability
mechanical
fragility.
Herein,
we
introduce
a
series
of
lightweight,
highly
porous
polyimide/aluminum
oxide
cluster
(PI/AlOC)
composite
aerogels
that
exhibit
superior
properties,
achieved
through
freeze‐drying
and
imidization
processes.
The
aluminum
clusters
serve
as
cross‐linking
agents,
enhancing
the
interaction
between
polyimide
molecular
chains
endowing
with
improved
structural
integrity
robustness,
evidenced
by
compression
modulus
8.7
MPa,
six‐fold
greater
than
pure
PI
aerogels.
Moreover,
high
porosity,
reduced
pore
size,
three‐dimensional
network
structure
PI/AlOC
aerogel
confer
exceptional
performance,
particularly
at
elevated
temperatures,
surpassing
commercial
materials.
Thus,
aerogels,
their
strength
outstanding
insulation,
are
promising
for
practical
insulation.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 4, 2024
Abstract
Electromagnetic
interference
(EMI)
shielding
materials
with
low
electromagnetic
(EM)
waves
reflection
characteristics
are
ideal
for
blocking
EM
radiation
and
pollution.
Materials
reflectivity
must
be
constructed
using
excellent
absorption
properties.
However,
simultaneously
possessing
both
EMI
performance
remain
scarce,
consequently,
multilayer
structures
need
to
developed.
Poly(p‐phenylene–2,6–benzobisoxazole)
nanofibers
(PNF)
prepared
by
deprotonation.
PNF
combined
MXene
heterostructure
MXene@Ni
in‐situ
growth;
MXene@Ni/PNF
acts
as
an
layer
while
MXene/PNF
reflective
layer.
Finally,
(MXene@Ni/PNF)–(MXene/PNF)
aerogels
layer‐by‐layer
freeze‐drying
based
on
the
layered
modular
design
concept.
Experimental
characterizations
revealed
that
enable
efficient
absorption‐reflection‐reabsorption
of
waves,
effectively
eliminating
EMI.
When
mass
ratio
Ni
in
is
1:6
fraction
80
wt.%,
exhibit
(71
dB)
a
very
coefficient
(R
=
0.10).
Finite
element
simulations
verified
developed
asymmetric
structural
achieve
high
characteristics.
In
addition,
display
infrared
camouflage
ability.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(34)
Published: May 7, 2024
Abstract
Personal
thermal
management
textiles
have
garnered
a
lot
of
attention
because
they
can
efficiently
preserve
the
body's
and
moisture
comfort
while
saving
energy
consumption.
Nonetheless,
conduction
cooling‐based
textile
research
is
scarce
frequently
encounters
obstacles
like
overlooking
through‐plane
heat
conduction,
management,
durability
assurance.
Here,
dual‐cooling
(DCT)
that
combines
high‐efficiency
dissipation
sweat
evaporation
with
3D
conductive
network
Janus
wetting
structure
demonstrated.
The
DCT
achieves
notable
in‐plane
conductivity
(8.57
0.70
W
m
−1
K
),
along
practical
mechanical
qualities
(tensile
fracture
strength
65
MPa),
under
influence
multistage
network.
Additionally,
benefits
from
its
structure,
exhibiting
unidirectional
moisture‐wicking
capability
(transport
index
1081%)
fast
water
performance
(0.34
g
h
).
Rapid
are
advantageous
features
for
cooling
human
body
in
both
static
dynamic
situations.
Compared
to
cotton
fabric,
lower
temperature
by
up
3.7
°C.
This
strategy
provides
fresh
perspective
on
development
advanced
functional
personalized
savings
buildings.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 19, 2024
The
ambition
of
human
beings
to
create
a
comfortable
environment
for
work
and
life
in
sustainable
way
has
triggered
great
need
advanced
thermal
insulation
materials
past
decades.
Aerogels
foams
present
prospects
as
insulators
owing
their
low
density,
good
insulation,
mechanical
robustness,
even
high
fire
resistance.
These
merits
make
them
suitable
many
real-world
applications,
such
energy-saving
building
materials,
thermally
protective
aircrafts
battery,
warming
fabrics.
Despite
advances,
date
there
remains
lack
comprehensive
yet
critical
review
on
the
materials.
Herein,
recent
progresses
fire-safe
thermal-insulating
aerogels
are
summarized,
pros/cons
three
major
categories
aerogels/foams
(inorganic,
organic
hybrids)
discussed.
Finally,
key
challenges
associated
with
existing
discussed
some
future
opportunities
proposed.
This
is
expected
expedite
development
insulating
help
sustainable,
safe,
energy-efficient
society.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 5, 2025
Textiles
have
played
a
pivotal
role
in
human
development,
evolving
from
basic
fibers
into
sophisticated,
multifunctional
materials.
Advances
material
science,
nanotechnology,
and
electronics
propelled
next-generation
textiles
beyond
traditional
functionalities,
unlocking
innovative
possibilities
for
diverse
applications.
Thermal
management
incorporate
ultralight,
ultrathin
insulating
layers
adaptive
cooling
technologies,
optimizing
temperature
regulation
dynamic
extreme
environments.
Moisture
utilize
advanced
structures
unidirectional
transport
breathable
membranes,
ensuring
exceptional
comfort
activewear
outdoor
gear.
Protective
exhibit
enhanced
features,
including
antimicrobial,
antiviral,
anti-toxic
gas,
heat-resistant,
radiation-shielding
capabilities,
providing
high-performance
solutions
healthcare,
defense,
hazardous
industries.
Interactive
integrate
sensors
monitoring
physical,
chemical,
electrophysiological
parameters,
enabling
real-time
data
collection
responses
to
various
environmental
user-generated
stimuli.
Energy
leverage
triboelectric,
piezoelectric,
hygroelectric
effects
improve
energy
harvesting
storage
wearable
devices.
Luminous
display
textiles,
electroluminescent
fiber
optic
systems,
enable
visual
applications
fashion
communication.
These
advancements
position
at
the
forefront
of
materials
significantly
expanding
their
potential
across
wide
range
The
ultrasensitive
piezoelectric
sensors
with
the
capability
of
sound
recognition
have
attracted
extensive
attention
due
to
their
unique
characteristics.
However,
fabrication
acoustic
favorable
flexibility
and
sensitivity
via
simple
controllable
methods
remains
a
significant
challenge.
Herein,
an
adaptive
sensor
based
on
polyimide
(PI)
composite
foams
containing
fluorine
groups
is
developed.
uniform
porous
morphology
endows
foam-based
remarkable
0.9536
V/N
over
broad
pressure
range
(2.5–12.5
N),
rapid
response
recovery
times
(18
15
ms,
respectively),
outstanding
durability
(over
19,000
cycles).
Moreover,
are
capable
effectively
monitoring
human
motions,
generated
output
voltages
reached
∼30
V
for
practical
applications
as
intelligent
household
devices.
In
particular,
exhibit
excellent
detecting
wide
sounds,
indicating
exceptional
sensitivity.
This
work
offers
promising
opportunities
design
development
high-performance
recognition,
motion
monitoring,
self-powered
wearable
devices
in
extreme
environments.
Nano-Micro Letters,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: April 14, 2025
Abstract
Enhancing
the
firefighting
protective
clothing
with
exceptional
thermal
barrier
and
temperature
sensing
functions
to
ensure
high
fire
safety
for
firefighters
has
long
been
anticipated,
but
it
remains
a
major
challenge.
Herein,
inspired
by
human
muscle,
an
anisotropic
aerogel
(ACMCA)
precise
self-actuated
monitoring
performance
is
developed
combining
aramid
nanofibers
eicosane/MXene
form
anisotropically
oriented
conductive
network.
By
two
synergies
of
negative
temperature-dependent
eicosane,
which
induces
high-temperature
differential,
directionally
ordered
MXene
that
establishes
network
along
directional
freezing
direction.
The
resultant
ACMCA
exhibited
remarkable
thermoelectric
properties,
S
values
reaching
46.78
μV
K
−1
κ
as
low
0.048
W
m
at
room
temperature.
Moreover,
prepared
electrical
responsiveness
variations,
facilitating
its
application
in
intelligent
systems.
designed
could
be
incorporated
into
layer,
demonstrating
wide
range
(50–400
°C)
rapid
response
time
early
alerts
(~
1.43
s).
This
work
provides
novel
insights
design
temperature-sensitive
clothing.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: July 30, 2024
Incorporating
passive
heating
structures
into
personal
thermal
management
technologies
could
effectively
mitigate
the
escalating
energy
crisis.
However,
current
materials
struggle
to
balance
thickness
and
insulating
capability,
resulting
in
compromised
comfort,
space
efficiency,
limited
thermoregulatory
performance.
Here,
a
dual
air-gelation
strategy,
is
developed
directly
synthesize
ultrathin
self-sustainable
metafabric
with
3D
dual-network
structure
during
electrospinning.
Controlling
interactions
among
polymer,
solvent,
water
enables
microphase
separation
of
charged
jets,
while
adjusting
distribution
carbon
black
nanoparticles
within
fluids
form
fibrous
networks
composed
interlaced
aerogel
micro/nanofibers
heat
storage
capabilities.
With
low
0.18
mm,
integrated
exhibits
exceptional
insulation
performance
(15.8
mW
m−1K−1),
superhydrophobicity,
enhanced
mechanical
properties,
high
breathability
maintaining
radiative
ability
(long-lasting
warming
8.8
°C).
This
strategy
provides
rich
possibilities
develop
advanced
for
smart
textiles
management.
Aerogels
have
application
due
their
fragility
poor
processability.
authors
an
aerogel-structured
micro/nanofiber
self-sustained
by
developing
strategy.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 7, 2024
Abstract
Electromagnetic
protection
in
extreme
environments
requires
materials
with
excellent
thermal
insulation
capability
and
mechanical
property
to
withstand
severe
temperature
fluctuations
complex
external
stresses.
Achieving
strong
electromagnetic
wave
absorption
(EMA)
while
sustaining
these
exceptional
properties
remains
a
significant
challenge.
Herein,
facile
approach
is
demonstrated
fabricate
biomimetic
leaf‐vein
MXene/CNTs/PI
(MCP)
aerogel
parallel
venations
through
bidirectional
freeze‐casting
method.
Due
its
multi‐arch
lamellar
structure
within
the
layers,
ultralight
MCP
(16.9
mg·cm
−3
)
achieves
minimum
reflection
loss
(RL
min
of
−75.8
dB
maximum
effective
bandwidth
(EAB
max
7.14
GHz
an
absorber
content
only
2.4
wt%,
which
also
exhibits
superelasticity
structural
stability
over
wide
range
from
−196
400
°C.
Moreover,
this
unique
facilitates
rapid
heat
dissipation
significantly
impeding
transfer
between
adjacent
achieving
ultralow
conductivity
15.3
mW·m
−1
·K
for
superinsulation.
The
combination
EMA
performance,
robust
stability,
superinsulation
provides
potential
design
scheme
under
conditions,
especially
aerospace
applications.
Micromachines,
Journal Year:
2024,
Volume and Issue:
15(10), P. 1226 - 1226
Published: Sept. 30, 2024
Non-invasive
medical
nanofiber
technology,
characterized
by
its
high
specific
surface
area,
biocompatibility,
and
porosity,
holds
significant
potential
in
various
domains,
including
tissue
repair
biosensing.
It
is
increasingly
becoming
central
to
healthcare
offering
safer
more
efficient
treatment
options
for
contemporary
medicine.
Numerous
studies
have
explored
non-invasive
nanofibers
recent
years,
yet
a
comprehensive
overview
of
the
field
remains
lacking.
In
this
paper,
we
provide
summary
applications
electrospun
fields,
considering
multiple
aspects
perspectives.
Initially,
introduce
electrospinning
nanofibers.
Subsequently,
detail
their
health,
health
monitoring,
personal
protection,
thermal
regulation,
wound
care,
highlighting
critical
role
improving
human
health.
Lastly,
paper
discusses
current
challenges
associated
with
offers
insights
into
future
development
trajectories.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: Dec. 3, 2024
Abstract
Designing
and
fabricating
a
compatible
low-reflectivity
electromagnetic
interference
(EMI)
shielding/high-temperature
resistant
infrared
stealth
material
possesses
critical
significance
in
the
field
of
military.
Hence,
hierarchical
polyimide
(PI)
nonwoven
fabric
is
fabricated
by
alkali
treatment,
in-situ
growth
magnetic
particles
"self-activated"
electroless
Ag
plating
process.
Especially,
impedance
matching
can
be
constructed
systematically
assembling
Fe
3
O
4
/Ag-loaded
PI
(PFA)
pure
Ag-coated
(PA),
endowing
it
with
an
ultralow-reflectivity
EMI
shielding
performance.
In
addition,
thermal
insulation
fluffy
three-dimensional
(3D)
space
structure
PFA
low
emissivity
PA
originated
from
bring
excellent
More
importantly,
strong
bonding
interaction
between
,
Ag,
fiber
improves
stability
high-temperature
Such
comprehensive
performance
makes
promising
for
military
tents
to
protect
internal
equipment
stemmed
adjacent
and/or
enemy,
inhibit
external
detection.
