Langmuir,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 20, 2024
Block
copolymer
micelles
have
been
increasingly
used
for
the
solubilization
and
delivery
of
hydrophobic
drugs.
There
exists
a
possibility
dissociation
formation
other
association
structures
in
contact
with
gastrointestinal
fluid.
In
this
study,
we
demonstrated
effect
fed-state
intestinal
fluid
(FeSSIF)
upon
characteristics
bare
quercetin
(QCT)-loaded
pluronic
123
(P123)
micelles.
Characterizations
were
performed
using
dynamic
light
scattering
(DLS),
Langmuir,
Journal Year:
2024,
Volume and Issue:
40(47), P. 24820 - 24831
Published: Nov. 14, 2024
Surface
tension,
conductivity,
and
dynamic
light
scattering
(DLS)
measurements
were
used
to
examine
the
surface
bulk
solution
behaviors
of
three
members
PFAS
family,
perfluorooctanoic
acid
(PFOA),
perfluorobutanesulfonic
(PFBS),
potassium
salt
perfluorooctanesulfonic
(PFOS).
Measurements
carried
out
in
solutions
having
variable
(acidic)
pH
buffered
=
8.0.
tension
data
show
traditional
soluble
surfactant
behavior,
results
illustrate
that
PFOA,
PFBS,
PFOS
activity
depends
sensitively
on
phase
pH.
The
tightly
packed
monolayers
formed
by
PFOA
mildly
acidic
imply
is
several
units
lower
than
bulk.
Results
from
conductivity
experiments
generally
increasing
with
concentration.
In
8.0
solutions,
changes
slope
concentration
suggest
onset
micelle
formation
at
concentrations
<1
mM,
markedly
reported
literature.
general,
apparent
critical
(CMCs)
determined
agree
similar
predictions
made
results.
DLS
close
predicted
CMCs,
objects
diameters
≤10
nm
start
form.
However,
unlike
micelles,
these
continue
grow
solute
These
aggregates
form
structures
50-150
nm.
Aggregate
size
shrinks
modestly
as
temperature
increases,
this
behavior
reversible.
Cryo-EM
images
confirm
a
broad
distribution
particles,
supporting
measurements.
Findings
work
represent
first
evidence
EPA-regulated
surfactants
rather
micelles
solution.
also
begin
reconcile
differences
have
led
CMC
literature
varying
more
an
order
magnitude.
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(23), P. 13055 - 13055
Published: Dec. 4, 2024
Bile
acid
salts
are
steroid
biosurfactants
that
build
relatively
small
micelles
compared
to
surfactants
with
an
alkyl
chain
due
the
rigid
conformation
of
skeleton.
In
order
increase
capacity
micellar
solubilization
hydrophobic
molecular
guest,
certain
C7
derivatives
were
synthesized.
Namely,
introducing
group
in
position
skeleton
results
a
more
effective
micelle's
domain
(core)
than
introduction
C3
position.
comparison,
fewer
synthetic
steps
required
if
groups
introduced
into
C12
cholic
Grignard
reaction.
Here,
thermodynamic
parameters
micellization
(demicellization)
(number
C
atoms
group:
2,
3,
4,
and
8)
anion
aqueous
solution
without
additives
examined
(which
have
not
yet
been
determined)
temperature
interval
Tenside Surfactants Detergents,
Journal Year:
2024,
Volume and Issue:
61(4), P. 366 - 377
Published: July 1, 2024
Abstract
The
current
investigation
examines
the
micellization
process
of
sodium
dodecylbenzene
sulfonate
in
aqueous
media
with
builders
at
temperatures
ranging
from
298.15
K
to
313.15
K.
Using
conductometry
and
tensiometry
analyses,
study
changes
micellar
properties
different
surfactant
solutions,
focusing
primarily
on
CMC.
Additionally,
variation
CMC
temperature
was
used
determine
thermodynamic
parameters
such
as
∆Gm°,
mathvariant="normal">Δ
H,
${{\increment}G}_{\mathrm{m}}^{{}^{\circ}},{\Delta
}{H}_{\mathrm{m}}^{{}^{\circ}}\text{,}$
S
${{\increment}S}_{\mathrm{m}}^{{}^{\circ}}$
.
This
approach
provides
valuable
insights
into
behavior
intermolecular
interactions
involved
system.
surface
active
π
CMC,
A
min,
Γ
max
were
elucidated
using
via
Wilhelmy
plate
technique.
Moreover,
capacity
builder
sequester
calcium
ions
studied
a
well-established
titration
method,
offering
their
effectiveness.
Their
efficiency
under
oxidative
conditions,
particularly
preventing
interaction
between
copper
hydrogen
peroxide,
evaluated.
article
comprehensive
analysis
when
anionic
surfactant,
sulfonate.
combination
improved
protecting
metals
corrosion,
extracting
heavy
polluted
soils,
personal
care
products
shampoos
soaps.
Langmuir,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 20, 2024
Block
copolymer
micelles
have
been
increasingly
used
for
the
solubilization
and
delivery
of
hydrophobic
drugs.
There
exists
a
possibility
dissociation
formation
other
association
structures
in
contact
with
gastrointestinal
fluid.
In
this
study,
we
demonstrated
effect
fed-state
intestinal
fluid
(FeSSIF)
upon
characteristics
bare
quercetin
(QCT)-loaded
pluronic
123
(P123)
micelles.
Characterizations
were
performed
using
dynamic
light
scattering
(DLS),
