ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(2), P. 2027 - 2040
Published: Jan. 6, 2024
Hydrogel
materials
have
proven
valuable
in
wound
healing,
but
improving
the
safety
of
these
hydrogels
is
still
challenging.
Therefore,
designing
multifunctional
natural
polymeric-based
with
excellent
mechanical
properties
to
replace
toxic
or
potentially
risky,
refractory
chemical
polymer-based
such
as
polyacrylamide
and
polyethylene
glycol
particular
significance.
Here,
a
green
starch-based
hydrogel
(Starch@Ca/CGC
hydrogel)
injectability,
self-healing,
instant
adhesion
was
constructed
by
coordination
interaction,
electrostatic
intramolecular
intermolecular
hydrogen
bonds.
Therein,
bioactive
small
molecules
gallic
acid
(GA)
carvacrol
(CA)
were
coordinated
metal
ions
ultrasonic-triggered
self-assembly
ionic
cross-linking
codriven
strategy
prepare
Cu-gallic
acid-carvacrol
nanospheres
(CGC
NPs),
which
conferred
near-infrared
light
(NIR)-controlled
CA
release
photothermal
synergistic
sterilization
properties,
well
antioxidant
anti-infection
capabilities.
More
importantly,
platforms
could
completely
cover
an
irregular
shape
prevent
secondary
injury
significantly
accelerate
healing
under
NIR
more
skin
appendages
like
hair
follicles
blood
vessels
appearing.
it
expected
that
this
serve
competitive
dressing
biomedical
field,
including
bacteria-derived
infection
other
tissue
repair.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(33)
Published: March 29, 2024
Abstract
Reliable
interfacial
bonding
is
an
essential
guarantee
that
flexible
electronics
can
output
realistic
signals,
especially
for
underwater
scenes.
However,
conventional
self‐adhesive
materials
usually
suffer
from
adhesion
failure,
conflict
between
and
cohesion,
as
well
adverse
effects
of
isotropous
residue,
greatly
limiting
their
applications
in
electronics.
Herein,
a
Janus
hydrophobic
structural
gel
(HSG)
with
asymmetric
fabricated
by
“grafting
one
twig
on
another”
approach
(in
situ
constructing
anti‐adhesive
the
top
gel).
The
layer
long
C18
aliphatic
chains
achieves
reliable
(interfacial
toughness
exceeds
80
J
m
−2
)
assistance
high
mobility
polymer
chains,
multiple
interactions,
effective
removal
liquid.
anti‐adhesion
containing
poly(ionic
liquid)
more
robust
due
to
electrostatic
ion‐dipole
ensuring
mechanical
strength
integral
HSG.
Such
heterostructure
avoids
common
nonessential
facilitating
operation.
intrinsic
hydrophobicity
HSG
also
prevents
water
erosion,
achieving
sensing.
As
result,
assembled
sensor
based
stably
monitor
human
motions
wirelessly
transmit
information,
exhibiting
enormous
potential
wearable
International Journal of Biological Macromolecules,
Journal Year:
2024,
Volume and Issue:
265, P. 130895 - 130895
Published: March 16, 2024
Fruit
is
prone
to
rot
and
deterioration
due
oxidative
browning
microbial
infection
during
storage,
which
can
cause
serious
economic
losses
food
safety
problems.
It
urgent
develop
a
multifunctional
composite
coating
extend
the
shelf
life
of
fruits.
In
this
work,
quaternized
chitosan
nanoparticles
(QCs/TA
NPs)
with
excellent
antibacterial
antioxidant
properties
were
prepared
based
on
electrostatic
interaction
using
tannic
acid
instead
conventional
cross-linking
agents.
Meanwhile,
konjac
glucomannan
(KGM)
high
viscosity,
edible
biodegradable
was
used
as
dispersant
disperse
stabilize
nanoparticles,
film-forming
agent
form
coating.
The
exhibited
oxygen
water
vapor
barrier
properties,
antioxidant,
antibacterial,
mechanical
hydrophobicity,
UV
shielding
properties.
Surprisingly,
permeability
K-NPs-15
film
low
1.93
×
10−13
(cm3·cm)/(cm2·s·Pa).
banana
spray
preservation
experiments
proved
that
could
effectively
prolong
bananas.
Therefore,
study
provides
new
idea
for
designing
freshness
coatings,
has
broad
application
prospect.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(2), P. 2027 - 2040
Published: Jan. 6, 2024
Hydrogel
materials
have
proven
valuable
in
wound
healing,
but
improving
the
safety
of
these
hydrogels
is
still
challenging.
Therefore,
designing
multifunctional
natural
polymeric-based
with
excellent
mechanical
properties
to
replace
toxic
or
potentially
risky,
refractory
chemical
polymer-based
such
as
polyacrylamide
and
polyethylene
glycol
particular
significance.
Here,
a
green
starch-based
hydrogel
(Starch@Ca/CGC
hydrogel)
injectability,
self-healing,
instant
adhesion
was
constructed
by
coordination
interaction,
electrostatic
intramolecular
intermolecular
hydrogen
bonds.
Therein,
bioactive
small
molecules
gallic
acid
(GA)
carvacrol
(CA)
were
coordinated
metal
ions
ultrasonic-triggered
self-assembly
ionic
cross-linking
codriven
strategy
prepare
Cu-gallic
acid-carvacrol
nanospheres
(CGC
NPs),
which
conferred
near-infrared
light
(NIR)-controlled
CA
release
photothermal
synergistic
sterilization
properties,
well
antioxidant
anti-infection
capabilities.
More
importantly,
platforms
could
completely
cover
an
irregular
shape
prevent
secondary
injury
significantly
accelerate
healing
under
NIR
more
skin
appendages
like
hair
follicles
blood
vessels
appearing.
it
expected
that
this
serve
competitive
dressing
biomedical
field,
including
bacteria-derived
infection
other
tissue
repair.
