Water,
Journal Year:
2024,
Volume and Issue:
16(8), P. 1182 - 1182
Published: April 21, 2024
Developing
environmentally
friendly
and
biodegradable
corrosion
inhibitors
is
an
important
research
direction
due
to
the
toxicity
non-degradability
of
conventional
carbon
steel
added
circulating
cooling
water
environments.
Polysaccharides
in
EPSs
(Exopolysaccharides)
can
be
used
as
green
inhibitors,
but
a
low
inhibition
rate
limits
their
practical
application.
Chemical
modification
widely
modify
functionality
polysaccharides
by
altering
physicochemical
properties
structures,
thereby
enhancing
or
supplementing
functional
characteristics.
In
this
study,
we
employed
chloroacetic
acid
esterifying
agent
chemically
Dextran
successfully
synthesized
modified
polysaccharide
derivative
with
substitution
degree
0.326.
This
efficiently
inhibited
The
carboxymethylated
dextran
(CM-Dextran)
formed
after
synthesis
could
adsorb
onto
metal
surfaces
form
protective
film,
inhibiting
surface
dissolution
reactions
exhibiting
anodic
properties.
experimental
results
showed
that
efficiency
CM-Dextran
increased
up
57.4%,
maximum
82.52%
at
concentration
4
mg/mL.
study
provides
new
insights
opportunities
for
development
derived
from
polysaccharides.
Results in Surfaces and Interfaces,
Journal Year:
2024,
Volume and Issue:
16, P. 100268 - 100268
Published: Aug. 1, 2024
This
study
evaluated
UV-radiated
Helichrysum
kraussii
(H.
kraussii)
extract
for
its
corrosion
inhibition
on
aluminium
in
1.0
M
HCl.
To
achieve
this,
techniques
such
as
Liquid
chromatography-mass
spectrometry
(LC-MS),
Fourier
transform
infrared
spectroscopy
(FTIR),
Gravimetric
analysis,
electrochemical
analysis
looking
at
impedance
(EIS)
and
potentiodynamic
polarization
(PDP),
contact
angle
computational
studies
were
used.
The
results
obtained
from
these
made
it
possible
to
conclude
the
performance
of
H.
a
inhibitor
metal.
LC-MS
FTIR
proved
that
exposure
UV
radiation
caused
change
composition
metabolites,
demonstrated
by
increase
number
peaks
chromatogram
shift
spectrum.
Weight
loss
technique
showed
inhibited
with
maximum
percentage
84.6948
%
concentration
1500
ppm
30
°C.
adsorption
molecules
metal
surface
was
found
obey
Langmuir
isotherm,
activation
energy
values
mechanism
through
physisorption.
Nyquist
plots
semi-circles
an
concentration,
showing
efficiency.
Tafel's
plot
both
anodic
cathodic
inhibited.
DFT/PBE/GGA/DNP
investigation
binding
energies
inhibitors
suggest
Al···FA
interaction
happens
physical
adsorption.
Zastita materijala,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 26, 2024
The
present
work
is
undertaken
to
investigate
the
corrosion
resistance
of
ever
silver
in
presence
water,
water+curd
system,
water+curd+rice
water+curd+rice+Salt
system.
has
been
evaluated
by
AC
impedance
spectra
.
have
employed
electrode
when
it
immersed
various
test
solutions
like
curd,
curd
rice
recipe,
recipe
with
salt
(sodium
chloride
500
ppm).
water+curd,
and
water+curd+rice+salt
spectroscopy.
If
a
protective
film
formed,
charge
transfer
increases,
value
phase
angle
increases
double
layer
capacitance
(Cdl)
decreases.
When
Ever
water
+
system
500ppmsodium
This
due
ion
introduced
into
It
implies
that
packed
vessels
made
silver,
we
should
avoid
adding
rice.
better
keep
separately.
be
noted
this
than
alone.
decreases
following
order:
Water
Curd
Rice
>
Salt
500ppm)
Water+
Water,
Journal Year:
2024,
Volume and Issue:
16(8), P. 1182 - 1182
Published: April 21, 2024
Developing
environmentally
friendly
and
biodegradable
corrosion
inhibitors
is
an
important
research
direction
due
to
the
toxicity
non-degradability
of
conventional
carbon
steel
added
circulating
cooling
water
environments.
Polysaccharides
in
EPSs
(Exopolysaccharides)
can
be
used
as
green
inhibitors,
but
a
low
inhibition
rate
limits
their
practical
application.
Chemical
modification
widely
modify
functionality
polysaccharides
by
altering
physicochemical
properties
structures,
thereby
enhancing
or
supplementing
functional
characteristics.
In
this
study,
we
employed
chloroacetic
acid
esterifying
agent
chemically
Dextran
successfully
synthesized
modified
polysaccharide
derivative
with
substitution
degree
0.326.
This
efficiently
inhibited
The
carboxymethylated
dextran
(CM-Dextran)
formed
after
synthesis
could
adsorb
onto
metal
surfaces
form
protective
film,
inhibiting
surface
dissolution
reactions
exhibiting
anodic
properties.
experimental
results
showed
that
efficiency
CM-Dextran
increased
up
57.4%,
maximum
82.52%
at
concentration
4
mg/mL.
study
provides
new
insights
opportunities
for
development
derived
from
polysaccharides.
