Polymers,
Год журнала:
2024,
Номер
16(18), С. 2571 - 2571
Опубликована: Сен. 11, 2024
In
our
continuing
search
for
new
polymer
composites
with
antimicrobial
activity,
we
observed
that
even
unmodified
epoxy
resins
exhibit
significant
activity.
Considering
their
widespread
use
as
starting
materials
the
realization
of
multifunctional
nanocomposites
excellent
chemical
and
mechanical
properties,
it
was
deemed
relevant
to
uncover
these
unexpected
properties
can
lead
novel
applications.
fact,
in
places
where
contact
human
activities
makes
working
surfaces
susceptible
microbial
contamination,
thus
jeopardizing
sterility
environment,
biological
activity
opens
way
successful
application
minimizing
healthcare-associated
infections.
To
this
end,
three
commercial
widely
used
(DGEBA/Elan-TechW
152LR,
1;
EPIKOTETM
Resin
MGS®/EPIKURETM
RIM
H
235,
2
MC152/EW101,
3)
have
been
investigated
determine
antibacterial
antiviral
After
24
h,
according
ISO
22196:2011,
1
showed
a
high
efficacy
(R
value
>
6.0
log
reduction)
against
Staphylococcus
aureus
Escherichia
coli.
2,
prepared
ratio
epoxy/hardener
indicated
by
supplier
(sample
2a)
10%
w/w
hardener
excess
2b),
exhibited
an
intriguing
virucidal
Herpes
Simplex
Virus
type-1
Human
Coronavirus
type
V-OC43
surrogate
SARS-CoV-2.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(32), С. 42748 - 42761
Опубликована: Июль 31, 2024
With
increasingly
severe
metal
corrosion,
coating
preparation
with
high-performance
corrosion
protection
has
attracted
more
attention.
Herein,
the
encapsulation
of
inhibitor
8-hydroxyquinoline
(8-HQ)
as
well
self-healing
agent
linseed
oil
(LO)
in
polyvinyl
alcohol
(PVA)
and
chitosan
(CS)
shells
were
realized
by
coaxial
electrospinning,
which
was
recorded
PVA/CS@LO/8-HQ
core–shell
nanofibers.
nanofibers
employed
to
promote
epoxy
coating.
The
anticorrosion
mechanism
that
change
local
pH
on
surface
stimulated
release
8-HQ
from
nanofibers,
then
chelated
iron
ions
form
a
complex.
When
cracks
occurred
caused
rupture
LO
released
reacted
oxygen
cure
them
so
could
be
healed
autonomously.
dynamic
potential
polarization
curves
showed
inhibition
efficiency
compound
+
reached
87.54%,
90.31%,
85.57%
at
=
3,
7,
11,
respectively,
higher
than
single
inhibitor.
Density
functional
theory
calculations
revealed
combination,
forming
hydrogen
bond
interaction,
promoted
adsorption
inhibitors
steel
surface.
Scanning
Kelvin
probe
electrochemical
impedance
spectroscopy
proved
properties
These
results
demonstrated
embedding
obtain
properties,
mechanical
ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(13), С. 7679 - 7690
Опубликована: Июнь 29, 2024
Within
the
cultural
heritage
field,
colloidal
systems
based
on
ecofriendly
products
represent
alternatives
to
toxic
solvents
as
cleaners
for
surface
artworks.
In
this
paper,
we
developed
an
innovative
protocol
prepare
a
Pickering
emulsion
gel
Funori
biopolymer,
halloysite
clay
nanotubes
(HNTs),
and
isooctane
confined
oil
phase.
The
filling
of
droplets
within
network
might
reduce
amounts
hydrocarbons
necessary
cleaning
applications.
Moreover,
specific
interactions
between
biopolymer
stabilized
could
increase
stability
emulsions
favor
removal
efficiency
toward
hydrophobic
contaminants.
First,
optimized
preparation
in
aqueous
media
by
addition
variable
Ba2+
ions
cross-linkers.
To
purpose,
studied
cross-linking
process
investigation
rheological
properties
gelation
kinetics.
Then,
prepared
hybrid
HNTs
achieve
sustainable
materials
with
microdomains
that
are
useful
We
investigated
properties,
which
were
strictly
correlated
Funori/halloysite
interactions.
peculiar
effects
assessed
studying
energetics
detaching
at
isooctane/water
interface.
Remarkably,
presence
enhanced
interfacial
activity
and,
consequently,
emulsion.
Finally,
explored
Regalrez
1126,
is
contaminant
can
be
found
both
contact
angle
measurements
optical
investigations
revealed
complete
1126
from
after
2
min
application.
Further
tests
real
artwork
(an
canvas
coming
private
collection)
confirmed
suitability
Funori/HNTs/isooctane
restoration
purposes.
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Март 9, 2025
This
study
developed
a
self-healing,
anti-corrosive
coating
based
on
novel
nanocomposite
formulation
of
8-hydroxyquinoline-5-sulfonic
acid-zinc
doped
polyaniline
(HQZn-PA)
incorporated
into
an
epoxy
matrix.
The
chemical
composition
and
surface
morphology
the
synthesized
were
thoroughly
characterized
using
Fourier
transform
infrared
spectroscopy,
X-ray
diffraction,
nuclear
magnetic
resonance,
scanning
electron
microscopy.
Electrochemical
impedance
spectroscopy
potentiodynamic
polarization
tests
confirmed
outstanding
corrosion
resistance
self-healing
efficiency
coating.
HQZn-PA
demonstrates
enhanced
anticorrosive
properties
through
synergistic
effects
its
constituents.
Polyaniline
(PA)
contributes
anodic
protection
forms
barrier
layer,
while
chelation
zinc
by
acid
(HQZn)
improves
PA
compatibility
within
polymer
matrix
functions
as
organic
inhibitor.
dual
action
strengthens
both
cathodic
mechanisms.
reduced
rate
450×
compared
maintained
modulus
1.03
×
1010
Ω
cm2
after
40
days
in
saline
environment.
also
demonstrated
99.28%
scratched
coatings.
These
results
highlight
potential
highly
effective
inhibitor
agent
for
long-term
metal
harsh
environments.
Polymer Composites,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 9, 2024
Abstract
The
demand
for
multifunctional,
high‐performance
materials
has
driven
advancements
in
surface‐functionalized
fillers
polymer
composite
coatings.
Despite
progress,
integrating
multiple
protective
properties
within
a
single
hybrid
formulation
remains
challenge.
This
review
explores
recent
developments
surface
and
interfacial
engineering
of
biosourced
fillers,
including
nanocellulose,
2D
like
graphene
oxide,
MXenes,
layered
double
hydroxides,
all
which
have
the
potential
to
enhance
chemical
resistance,
mechanical
strength,
thermal
stability
Key
strategies
include
physical/chemical
treatments,
nanostructuring,
multiscale
optimize
cohesion,
adhesion,
multivalent
interactions
among
matrices,
substrates.
role
computational
modeling
performance
prediction
optimization
is
also
discussed.
concludes
with
current
challenges
future
directions,
highlighting
importance
functionalization
developing
next‐generation,
Highlights
Functionalized
boost
coatings'
performance.
nanomaterials
resistance
corrosion,
wear,
fire.
Bio‐based
offer
sustainable
solutions
lightweight,
robust
Advanced
improves
adhesion
coating
durability.
Modeling
accelerates
design
by
predicting
interactions.
