BMEMat,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 24, 2024
Abstract
With
high
biocompatibility
and
degradability,
polysaccharide‐based
hydrogels
are
favorable
healthcare
materials.
However,
in
many
biomedical
applications,
these
materials
inconvenient
to
handle
with
fixed
morphology,
unable
closely
match
the
wounds,
easy
detach
due
insufficient
adhesion.
Inspired
by
superior
wet
adhesive
properties
of
marine
mussels,
researchers
have
used
mussel‐inspired
chemistry
create
mussel‐mimetic
injectable
that
simple
operate,
controllable
shape,
highly
adhesive,
significantly
extended
their
applications
such
as
tissue
adhesives,
delivery
vehicles,
engineering
scaffolds,
wearable
sensors.
there
few
comprehensive
reviews
on
both
adhesion
injectability,
critical
analyses
hydrogels'
preparation
methods
applications.
This
review
fills
this
gap
systematically
summarizes
strategies
for
novel
hydrogels,
including
modifying
polysaccharides
catechol‐
or
pyrogallol‐containing
small
molecules
leveraging
different
interactions
between
catechol‐/pyrogallol‐modified
other
substances
form
crosslinked
hydrogels.
Furthermore,
recent
discussed,
future
challenges
research
trends
proposed.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(18)
Published: Feb. 13, 2023
Abstract
The
integration
and
functionality
of
high‐power
electronic
architectures
or
devices
require
a
high
strength
good
heat
flow
at
the
interface.
However,
simultaneously
improving
interfacial
bonding
phonon
transport
polymers
is
challenging
because
tradeoff
between
cross‐linked
flexible
chains
high‐quality
crystalline
structure.
Here,
copolymer,
poly(dopamine
methacrylate‐co‐hydroxyethyl
methacrylate
[P(DMA‐HEMA)]
designed
synthesized,
inspired
by
snail
mussel
adhesion.
copolymer
achievs
surface
adhesion
up
to
6.38
MPa
owing
synergistic
effects
hydrogen
bonds
mechanical
interlocking.
When
introduced
into
vertically
aligned
carbon
nanotubes
(VACNTs),
catechol
groups
in
P(DMA‐HEMA)
formed
strong
with
through
π‐π
interactions
As
result,
P(DMA‐HEMA)/VACNTs
composite
shows
through‐plane
thermal
conductivity
(21.46
W
m
−1
K
),
an
in‐plane
that
3.5
times
higher
than
pristine
VACNTs,
extremely
low
contact
resistance
(20.27
mm
2
).
Furthermore,
forms
weld‐free
high‐strength
connections
two
pieces
various
metals
bridge
directional
pathways.
It
also
exhibits
excellent
transfer
capability
reliability
even
under
zero‐pressure
conditions.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(50)
Published: Oct. 20, 2022
The
mechanical
properties
of
most
hydrogels
(ionogels)
are
considerably
affected
by
covalently
cross-linked
networks.
However,
the
interactions
between
solvent/solvent
molecules
and
solvent/polymer
chains
usually
ignored.
Herein,
a
series
ultra-tough
ionogels
were
prepared
via
supramolecular
solvent,
halometallate
ionic
liquid,
in
which
cations
coordinating
anions
form
3D
network.
linear
polymer
physically
with
solvents
synergistically
enhancing
strength
(14.3
MPa),
toughness
(78
MJ
m-3
),
Young's
modulus
(55
MPa)
ionogels,
effectively
dispersing
stress
concentration
under
load,
obtaining
better
fatigue
resistance
higher
fracture
energy
(198
kJ
m-2
).
Furthermore,
reversible
cross-linking
enables
green
recovery
recycling
simply
water.
This
strategy
shows
broad
applicability
based
on
variety
coordinatable
polymers.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(36)
Published: May 18, 2023
Abstract
Linear
chains
in
thermoplastics
make
them
relatively
weak
performance
but
inherently
weldable
and
recyclable.
By
contrast,
thermosets
with
permanently
crosslinked
networks
possess
outstanding
mechanical
performance,
thermal,
chemical
stability,
are
unweldable
unrecyclable.
In
the
last
decade,
a
kind
of
thermoplastics‐like
termed
as
vitrimer
has
been
developed
extensive
applications,
which
welding
vitrimers
plays
central
fundamental
role.
Herein,
we
present
current
state
art
discuss
from
broad
picture
chemistry,
physics,
mechanics:
i)
chemistry
mechanics
vitrimers;
ii)
applicability
assessment
methods
for
iii)
design
principles
implement
strategies
to
iv)
effects
conditions
on
strength
toughness;
v)
applications
adhesion
chemically
inert
materials.
Finally,
advantages,
challenges,
open
questions
highlighted,
future
opportunities
mechanics,
tough
welding,
artificial
intelligence
aided
programming
technology,
standard,
so
discussed.
The
development
would
fuse
disciplines
transformative
impact
polymer
industry.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(7)
Published: Oct. 11, 2023
Abstract
Solvent‐free
elastomers,
unlike
gels,
do
not
suffer
from
solvent
evaporation
and
leakage
in
practical
applications.
However,
it
is
challenging
to
realize
the
preparation
of
high‐toughness
(with
both
high
stress
strain)
ionic
elastomers.
Herein,
linear
poly(ionic
liquid)
(PIL)
elastomers
are
constructed
via
supramolecular
networks
formed
by
polymerization
halometallate
liquid
(IL)
monomers,
without
any
chemical
crosslinking.
The
obtained
PIL
exhibit
strength
(16.5
MPa),
Young's
modulus
(157.49
toughness
(130.31
MJ
m
−3
),
crack
propagation
insensitivity
(fracture
energy
243.37
kJ
−2
owing
enhanced
intermolecular
noncovalent
interactions
chains.
Furthermore,
elastomer‐based
strain,
pressure,
touch
sensors
have
shown
sensitivity.
crosslinked
network
endows
with
self‐healing
recyclable
properties,
broad
application
prospects
fields
flexible
sensor
devices,
health
monitoring,
human–machine
interaction.
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(15), P. 19560 - 19573
Published: April 10, 2023
Stimuli-responsive
hydrogels
have
attracted
much
attention
over
the
past
decade
for
potential
bioengineering
applications
such
as
wound
dressing
and
drug
delivery.
In
this
work,
a
pH
temperature
dual-responsive
microgel-embedded
hydrogel
has
been
fabricated
by
incorporating
poly(N-isopropylacrylamide-co-acrylic
acid)
(PNIPAAm-co-AAc)
based
microgel
particles
into
polyacrylamide
(PAAm)/chitosan
(CS)
semi-interpenetrating
polymer
network
(semi-IPN),
denoted
microgel@PAM/CS.
The
resultant
possesses
excellent
mechanical
properties
including
stretchability,
compressibility,
elasticity.
addition,
microgel@PAM/CS
can
tightly
adhere
to
surfaces
of
variety
tissues
porcine
skin,
kidney,
intestine,
liver,
heart.
Moreover,
it
shows
controlled
dual-drug
release
profile
both
bovine
serum
albumin
(BSA)
(as
model
protein)
sulfamethoxazole
(SMZ),
an
antibiotic.
Excellent
antimicrobial
are
obtained
SMZ-loaded
hydrogels.
Compared
with
traditional
administration
methods
mouth,
injection,
inhalation,
possess
advantages
higher
loading
efficiency
(by
more
than
80%)
controllable
sustained
(over
48
h)
release.
significantly
enhance
healing
process.
This
work
provides
facile
approach
fabrication
multifunctional
stimuli-responsive
microparticle-embedded
semi-IPN
structures,
as-prepared
great
smart
materials
in
biomedical
engineering.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(10)
Published: Jan. 18, 2024
Abstract
Supramolecular
polymer
networks
(SPNs),
crosslinked
by
noncovalent
bonds,
have
emerged
as
reorganizable
and
recyclable
polymeric
materials
with
unique
functionality.
However,
poor
stability
is
an
imperative
challenge
faced
SPNs,
because
SPNs
are
susceptible
to
heat,
water,
and/or
solvents
due
the
dynamic
reversible
nature
of
bonds.
Herein,
design
a
cooperative
network
(NCoN)
simultaneously
stabilize
reinforce
reported,
resulting
in
ultrastable,
superrobust,
SPN.
The
NCoN
constructed
multiplying
H‐bonding
sites
tuning
conformation/geometry
segment
optimize
multivalence
cooperativity
H‐bonds.
rationally
designed
high
conformational
compliance
favors
formation
tightly
packed
H‐bond
arrays
comprising
higher‐density
stronger
Consequently,
H‐bonded
crosslinks
display
covalent
crosslinking
effect
but
retain
on‐demand
dynamics
reversibility.
resultant
ultrastable
SPN
not
only
displays
remarkable
resistance
heat
up
120
°C,
water
soaking,
broad
spectrum
solvents,
also
possesses
superhigh
true
stress
at
break
(1.1
GPa)
ultrahigh
toughness
(406
MJ
m
−3
).
Despite
covalent‐network‐like
stability,
through
activating
its
reversibility
high‐polarity
solvent
heated
threshold
temperature.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: May 9, 2024
Abstract
Chemical
flooding
through
biopolymers
acquires
higher
attention,
especially
in
acidic
reservoirs.
This
research
focuses
on
the
application
of
chemical
for
enhanced
oil
recovery
reservoirs,
with
a
particular
emphasis
modified
chitosan.
The
modification
process
involved
combining
chitosan
vinyl/silane
monomers
via
emulsion
polymerization,
followed
by
an
assessment
its
rheological
behavior
under
simulated
reservoir
conditions,
including
salinity,
temperature,
pressure,
and
medium
pH.
Laboratory-scale
experiments
were
carried
out
using
both
original
at
conditions
2200
psi,
135,000
ppm
196°
temperature.
study
evaluated
impact
pressure
properties
forms,
finding
that
composite
was
better
suited
to
environments,
showing
resistance
effects
significant
increase
viscosity
11%
improvement
over
5%
achieved
unmodified
Advanced
modeling
simulation
techniques,
particularly
tNavigator
Simulator
Bahariya
formations
Western
Desert,
employed
further
understand
polymer
solution
dynamics
contexts
predict
key
petroleum
engineering
metrics.
results
underscored
effectiveness
increasing
rates,
outperforming
native
counterpart
traditional
water
flooding,
achieving
factor
48%,
compared
39%
37%
thereby
demonstrating
potential
benefits
composites
enhancing
operations.
