Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 2, 2024
Abstract
Biomass‐based
functional
polymers
have
received
significant
attention
across
various
fields,
in
view
of
eco‐friendly
human
society
and
sustainable
growth.
In
this
context,
there
are
efforts
to
functionalize
the
biomass
for
next‐generation
polymer
materials.
Here,
stretchable
heat
transfer
materials
focused
on
which
essential
electronics
future
robotics.
To
achieve
goal,
natural
rubber
(NR)
is
chemically
modified
with
a
thiol‐terminated
phenylnaphthalene
(TTP),
then
utilized
as
thermally
conductive
NR
(TCNR)
matrix.
Hexagonal
boron
nitride
(h‐BN),
renowned
its
high
thermal
conductivity
low
electrical
conductivity,
incorporated
filler
develop
eco‐materials.
The
optimized
TCNR/h‐BN
composite
elongates
140%
due
great
elasticity
NR,
exhibits
excellent
dielectric
properties
(a
constant
2.26
loss
0.006).
Furthermore,
synergetic
phonon
crystallites
h‐BN
particles
results
0.87
W
m
−1
K
.
outstanding
thermal,
mechanical,
newly
developed
enable
successful
demonstration
shape‐adaptable
management
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 9, 2025
Abstract
Polymer
composite
materials
encounter
considerable
challenges
in
sustaining
superior
tribological
properties
at
high
rotational
speeds.
Inspired
by
the
microstructure
of
dragonfly
wings,
a
novel
thermally
stable
and
ambient
pressure
curing
poly(urea‐imide)
resin
(PURI)
with
excellent
has
been
eco‐friendly
synthesis
using
bio‐based
greener
solvents.
Furthermore,
The
PURI
composites
enhanced
polyether
ether
ketone
(PEEK)
Polytetrafluoroethylene
(PTFE)
blended
fabrics
demonstrate
mechanical,
tensile
strengths
exceeding
175
MPa.
synthesized
green
solvent
dimethyl
isosorbide
(DMI)
exhibit
an
average
friction
coefficient
0.1160
wear
rate
2.7
×
10
−14
m
3
(N·m)
−1
800
r
min
.
performance
is
primarily
attributed
to
molecular
chain
rearrangement
during
friction,
which
leads
formation
crystalline
structures
certain
regions,
phenomenon
known
as
friction‐induced
crystallization.
This
process
entropy‐reducing
mechanism
that
absorbs
other
forms
energy,
such
frictional
heat,
process.
Moreover,
PTFE
fibers
underwent
tribochemical
reactions
resulting
changes
lattice
spacing
contributing
tribofilm.
study
provides
new
evidence
regarding
mechanisms
polymer
composites,
beneficial
for
designing
high‐performance
wear‐resistant
composites.
Nano Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 7, 2025
Adhesives
are
extensively
used
in
industry
and
construction,
with
formaldehyde-free
options
gaining
popularity
due
to
their
enhanced
safety
chemical
stability.
However,
water
resistance
remains
a
significant
limitation.
In
this
study,
simple
efficient
strategy
based
on
physicochemical
dual
cross-linking
synergistic
network
was
proposed
develop
new
adhesive
(IBMP-BT).
The
unique
structure,
featuring
stable
formed
by
amidation
of
multiple
hydrogen
bonds,
enables
resistance,
strength,
toughness
the
adhesive.
dry
shear
strength
IBMP-BT
reached
2.03
MPa
0.600
J,
respectively,
representing
improvements
89.7%
255.03%
compared
those
unmodified
wet
bonding
1.16
MPa,
significantly
exceeding
requirements
China's
national
standards.
This
innovative
design
allows
olefin
copolymers
replace
traditional
formaldehyde-based
products,
leading
creation
high-performance
adhesives.
Although
aramid
nanofibers
(ANFs)
consist
of
rigid
poly(terephthalic
acid
terephthalamide)
molecular
chains
with
good
high
temperature
resistance
for
aerospace
and
other
high-temperature
applications,
it
has
poor
electrical
insulation
properties
due
to
internal
defects.
Currently,
the
main
method
improve
is
introduce
wide
band
gap
two-dimensional
(2D)
fillers,
such
as
Boron
Nitride
Nanosheets
(BNNS)
or
mica
flakes,
but
this
inevitably
affects
mechanical
optical
transparency.
Cellulose
acetate
(CA)
originated
from
acetylation
natural
cellulose,
higher
number
hydrogen
bond
donors
on
chain
enables
interbond
many
polymers.
In
study,
CA
was
introduced
into
ANFs
films,
all-organic
films
were
prepared
by
blade
coating
method.
A
dielectric
constant
14.4
well
a
low
loss
(0.062
@103
Hz)
obtained,
all
lower
than
that
which
attributed
introduction
interfacial
bonds
suppressed
loss.
addition,
deep
traps
inside
further
improved
in
breakdown
strength
216.11
MV/m
film
367.8
5
film.
The
also
showed
excellent
flexibility
resistance,
performance
under
different
extreme
environments
still
films.
This
study
provides
preparation
resistant
electrically
insulating
have
great
potential
applications
fields
relating
circumstance.
