Small,
Journal Year:
2024,
Volume and Issue:
20(35)
Published: April 21, 2024
High-efficient
underwater
self-healing
materials
with
reliable
mechanical
attributes
hold
great
promise
for
applications
in
ocean
explorations
and
diverse
operations.
Nevertheless,
achieving
these
functions
aquatic
environments
is
challenging
because
the
recombination
of
dynamic
interactions
will
suffer
from
resistance
to
interfacial
water
molecules.
Herein,
an
ultra-robust
all-environment
stable
self-healable
polyurethane-amide
supramolecular
elastomer
developed
through
rational
engineering
hydrophobic
domains
multistrength
hydrogen
bonding
provide
healing
compatibility
as
well
efficient
suppression
ingress.
The
coupling
chains
hierarchical
bonds
within
a
multiphase
matrix
self-assemble
generate
dynamical
hard-phase
microdomains,
which
synergistically
realize
high
stretchability
(1601%),
extreme
toughness
(87.1
MJ
m
Materials Horizons,
Journal Year:
2024,
Volume and Issue:
11(20), P. 5058 - 5069
Published: Jan. 1, 2024
Polydimethylsiloxane
(PDMS)
elastomers
with
high
mechanical
and
healing
properties
are
developed
as
smart
materials
for
electrical
power
systems
electronic
devices
to
address
or
damage.
However,
the
challenge
is
reconcile
conflicting
molecular
mechanisms
of
in
development
PDMS
elastomers.
This
study
adopts
"rigid-while-flexible"
mutual
network
structure
by
copolymerizing
rigid
polyimide
(PI)
flexible
segments
dynamic
reversible
crosslinking
designed
on
backbones.
elastomer
(designated
PSiPI)
exhibits
toughness,
tensile
strength
elongation
at
break,
well
excellent
efficiency
recyclability.
Moreover,
PSiPI
also
good
insulation
corona
damage
properties.
Taking
advantage
recyclability
elastomers,
healable
superhydrophobic
coatings
contact
angles
greater
than
150°
have
been
prepared
compositing
SiO
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(7), P. 2668 - 2677
Published: Feb. 5, 2024
Replacing
traditional
petroleum-based
plastics
with
degradable
biobased
has
become
one
of
the
significant
strategies
to
address
energy
shortages
and
environmental
issues.
Nevertheless,
it
still
remains
a
scientific
challenge
develop
ultrastrong
mechanical
strength
superior
recyclability.
Here,
catalytic
conversion
Sapium
sebiferum
oil
(SSO)
9,10-dihydroxy-octadecanoic
acid
(C18-OH)
monomer
is
first
designed.
Simultaneously,
novel
plastic,
namely,
PEA,
fabricated
by
dual
network
through
one-pot
melt-polymerization,
which
exhibits
performance
higher
than
most
commercial
other
reported
PEAs.
Benefiting
from
synergy
dynamic
nature
H-bonds
hydroxy-ester
bonds
as
well
flexibility
long
aliphatic
chain,
PEAs
exhibit
exceptional
repairability
reprocessability.
More
importantly,
can
be
efficiently
degraded
into
original
reagents
cross-linked
materials
reconstructed
recovered
monomers
without
losing
pristine
performance.
Additionally,
abundant
polar
groups
provide
excellent
adhesion
properties
for
high
shear
10.29
±
0.21
MPa.
This
work
unveils
an
elegant
efficient
synthetic
route
fabricate
impressively
robust
chemically
recyclable
promising
alternatives
conventional
plastics.
ACS Applied Polymer Materials,
Journal Year:
2024,
Volume and Issue:
6(16), P. 10040 - 10048
Published: Aug. 13, 2024
Flexible
strain
sensors
have
attracted
great
attention
for
their
important
application
potential
in
soft
robot,
wearable
device,
electronic
skin,
and
human–computer
interaction,
yet
there
are
still
challenges
such
as
the
loss
of
service
life
by
external
force
produced
waste
that
need
to
be
solved.
Herein,
a
self-healable,
degradable,
reprocessable
lignin-based
polyurethane
(LPU)
elastomer
was
synthesized
flexible
sensor.
Owing
formation
cross-linking
network
lignin
reinforcement
role
unreacted
lignin,
tensile
strength
elongation
at
break
LPU
reached
2.72
MPa
712%,
respectively.
The
plentiful
hydrogen
disulfide
bonds
endowed
with
not
only
good
self-healing
capability
but
also
superior
reprocessing
performance.
Importantly,
able
completely
degraded
within
2
h
1
mol
L–1
NaOH
water/ethanol
solution.
elastomer-based
sensor
liquid
metal
(LM)
conductive
material
successfully
applied
detect
various
human
motions
could
restore
its
sensing
function
healing
substrate
reconnection
LM
layer.
Moreover,
discarded
easily
recycled
prepare
after
degradation
substrate.
functional
environmentally
friendly
biobased
will
greatly
promote
sustainable
development
electronics.
