Molecules,
Год журнала:
2024,
Номер
29(19), С. 4584 - 4584
Опубликована: Сен. 26, 2024
The
proposed
paper
describes
a
simple
and
environmentally
friendly
method
for
the
synthesis
of
three-component
polymer–inorganic
composites,
which
includes
modification
zinc
oxide
or
montmorillonite
(MMT)
with
chitosan
(CS),
followed
by
immobilization
palladium
on
resulting
two-component
composites.
structures
properties
obtained
composites
were
characterized
physicochemical
methods
(IRS,
TEM,
XPS,
SEM,
EDX,
XRD,
BET).
Pd–CS
species
covered
surface
inorganic
materials
through
two
different
mechanisms.
interaction
polyelectrolyte
led
to
deprotonation
its
amino
groups
deposition
ZnO.
Pd
CS/ZnO
occurred
hydrolysis
[PdCl4]2−,
forming
PdO
particles
interacting
chitosan.
In
case
CS/MMT,
protonated
CS
interacted
negative
sites
MMT,
positively
charged
CS/MMT
composite.
Furthermore,
[PdCl4]2−
–NH3+
electrostatic
force.
According
TEM
studies
1%Pd–CS/ZnO,
presence
nanoclusters
composed
smaller
nanoparticles
3–4
nm
in
size
observed
CS/ZnO.
For
1%Pd–CS/MMT,
sizes
2
evenly
distributed
support
surface.
prepared
CS–inorganic
tested
hydrogenation
2-propen-1-ol
acetylene
compounds
(phenylacetylene,
2-hexyn-1-ol)
under
mild
conditions
(T—40
°C,
PH2—1
atm).
It
was
shown
that
efficiency
1%Pd–CS/MMT
is
higher
than
can
be
explained
formation
are
mechanism
2-hexyn-1-ol
over
an
optimal
catalyst
proposed.
Soft Matter,
Год журнала:
2024,
Номер
20(24), С. 4806 - 4815
Опубликована: Янв. 1, 2024
Hydrogels
in
sensors
often
lack
adhesion.
We
developed
a
BNMFs/PAA
composite
hydrogel
with
boron
nitride
microfibers
(BNMFs)
and
polyacrylic
acid
(PAA).
BNMFs
enhance
adhesion
mechanical
properties,
making
it
ideal
for
various
applications.
Advanced Healthcare Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 3, 2024
Abstract
In
the
pursuit
of
new
wound
care
products,
researchers
are
exploring
methods
to
improve
healing
through
exogenous
products.
However,
diverging
from
this
conventional
approach,
work
has
developed
an
endogenous
support
system
for
healing,
drawing
inspiration
body's
innate
mechanisms
governed
by
sequential
release
metal
ions
body
at
site
promote
different
stages
healing.
This
engineers
a
multi‐ion‐releasing
sprayable
hydrogel
system,
mimic
intricate
process,
representing
next
evolutionary
step
in
It
comprises
Alginate
(Alg)
and
Fibrin
(Fib)
infused
with
Polylactic
acid
(PLA)
polymeric
microcarriers
encapsulating
multi
(calcium,
copper,
zinc)
nanoparticles
(Alg‐Fib‐PLA‐nCMB).
Developed
Alg‐Fib‐PLA‐nCMB
show
sustained
beneficial
metallic
site,
offering
range
advantages
including
enhanced
cellular
function,
antibacterial
properties,
promotion
crucial
processes
like
cell
migration,
ROS
mitigation,
macrophage
polarization,
collagen
deposition,
vascular
regeneration.
comparative
study
commercial
product
(Midstress
spray),
demonstrates
superior
outcomes
rat
model,
indicating
its
potential
generation
product,
addressing
critical
challenges
promising
avenue
future
advancements
management.
Biomaterials Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
Based
on
the
tumor
microenvironment
and
advantages
of
microneedle
administration,
we
summarize
application
responsive
microneedles
in
cancer
treatment,
providing
a
reference
for
research
drug
delivery
systems
treatment.
Molecules,
Год журнала:
2024,
Номер
29(19), С. 4584 - 4584
Опубликована: Сен. 26, 2024
The
proposed
paper
describes
a
simple
and
environmentally
friendly
method
for
the
synthesis
of
three-component
polymer–inorganic
composites,
which
includes
modification
zinc
oxide
or
montmorillonite
(MMT)
with
chitosan
(CS),
followed
by
immobilization
palladium
on
resulting
two-component
composites.
structures
properties
obtained
composites
were
characterized
physicochemical
methods
(IRS,
TEM,
XPS,
SEM,
EDX,
XRD,
BET).
Pd–CS
species
covered
surface
inorganic
materials
through
two
different
mechanisms.
interaction
polyelectrolyte
led
to
deprotonation
its
amino
groups
deposition
ZnO.
Pd
CS/ZnO
occurred
hydrolysis
[PdCl4]2−,
forming
PdO
particles
interacting
chitosan.
In
case
CS/MMT,
protonated
CS
interacted
negative
sites
MMT,
positively
charged
CS/MMT
composite.
Furthermore,
[PdCl4]2−
–NH3+
electrostatic
force.
According
TEM
studies
1%Pd–CS/ZnO,
presence
nanoclusters
composed
smaller
nanoparticles
3–4
nm
in
size
observed
CS/ZnO.
For
1%Pd–CS/MMT,
sizes
2
evenly
distributed
support
surface.
prepared
CS–inorganic
tested
hydrogenation
2-propen-1-ol
acetylene
compounds
(phenylacetylene,
2-hexyn-1-ol)
under
mild
conditions
(T—40
°C,
PH2—1
atm).
It
was
shown
that
efficiency
1%Pd–CS/MMT
is
higher
than
can
be
explained
formation
are
mechanism
2-hexyn-1-ol
over
an
optimal
catalyst
proposed.
