Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: Nov. 24, 2023
In
Earth's
atmosphere,
the
surface
tension
of
sub-micron
aerosol
particles
is
suspected
to
affect
their
efficiency
in
becoming
cloud
droplets.
But
this
quantity
cannot
be
measured
directly
and
inferred
from
chemical
compounds
present
aerosols.
Amphiphilic
surfactants
have
been
evidenced
aerosols
but
experimental
information
on
properties
mixtures
with
other
components
lacking.
This
work
explores
experimentally
aqueous
amphiphilic
(SDS,
Brij35,
TritonX100,
TritonX114,
CTAC)
inorganic
salts
(NaCl,
(NH4)2SO4)
soluble
organic
acids
(oxalic
glutaric
acid)
using
pendant
droplet
tensiometry.
Contrary
what
could
expected,
systematically
enhanced
rather
than
reduced
it,
by
further
lowering
and,
some
cases,
CMC.
Furthermore,
all
studied
were
strongly
non-ideal,
even
displaying
synergism,
thus
demonstrating
that
common
assumption
ideality
for
not
valid.
The
molecular
interactions
between
mixture
either
bulk
(salting
out),
mixed
monolayer
(synergy
tension)
or
micelles
CMC)
need
included
when
describing
such
mixtures.
Industrial & Engineering Chemistry Research,
Journal Year:
2024,
Volume and Issue:
63(7), P. 3336 - 3348
Published: Feb. 8, 2024
In
this
paper,
the
thermodynamic
properties
of
binary
mixtures
surfactants
hexadecyltrimethylammonium
bromide
(HA)–sodium
deoxycholate
(DC)
and
dodecyltrimethylammonium
(DA)–sodium
in
an
aqueous
NaCl
solution
(0.3
mol
kg–1)
temperature
interval
T
=
273.1–323.1
K
are
examined.
mixed
micelles
such
as
HA–DC
DA–DC,
there
synergistic
interactions
between
structurally
different
micellar
building
units.
The
dependence
molar
excess
Gibbs
free
energy
formation
pseudophase
on
fractions
(gE
f(xi))
is
a
symmetric
function
(a
first-order
Margules
function)
where
entropy
not
zero,
i.e.,
strict
theory
regular
does
apply.
If
phenomenon
enthalpy–entropy
compensation
valid
for
each
partial
process
during
(at
constant
temperature)
surfactant
mole
fraction
from
initial
mixture,
ratio
enthalpy
certain
RST
constant,
then
gE
f(xi)
function.
Both
investigated
pseudophases
solubilization
daidzein
(D)
exhibit
relation
to
D
with
system
monocomponent
surfactants.
energies
DA–DC
negative,
which
means
that
solubilizate
more
thermodynamically
stable
than
systems
containing
D.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(19), P. 10924 - 10963
Published: Aug. 23, 2024
Aerosol
and
aqueous
particles
are
ubiquitous
in
Earth's
atmosphere
play
key
roles
geochemical
processes
such
as
natural
chemical
cycles,
cloud
fog
formation,
air
pollution,
visibility,
climate
forcing,
etc.
The
surface
tension
of
atmospheric
can
affect
their
size
distribution,
condensational
growth,
evaporation,
exchange
chemicals
with
the
atmosphere,
which,
turn,
important
above-mentioned
processes.
However,
because
measuring
this
quantity
is
challenging,
its
role
was
dismissed
for
decades.
Over
last
15
years,
field
research
has
seen
some
tremendous
developments
rapidly
evolving.
This
review
presents
state-of-the-art
subject
focusing
on
experimental
approaches.
It
also
a
unique
inventory
adsorption
isotherms
over
130
mixtures
organic
compounds
water
relevance
model
development
validation.
Potential
future
areas
seeking
to
better
determine
particles,
constrain
laboratory
investigations,
or
understand
various
processes,
discussed.
We
hope
that
appeals
not
only
scientists
but
researchers
from
other
fields,
who
could
help
identify
new
approaches
solutions
current
challenges.
Arabian Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
17(4), P. 105712 - 105712
Published: March 5, 2024
The
development
of
fluorine-free
foaming
extinguishing
agent,
abbreviation
FFEA,
has
become
an
urgent
scientific
challenge
in
the
field
fire
protection
engineering
due
to
fact
that
key
component
existing
aqueous
film-forming
foams
is
listed
as
a
persistent
organic
pollutant.
A
study
was
conducted
on
foam
performance
and
efficiency
FFEA
prepared
by
hydrocarbon
silicone
surfactants
with
low-carbon
alcohol
modulation,
using
three
selected
surfactants.
results
show
including
alcohol-modulated
Silok8141/SDS
Silok8008/SDS,
exhibit
low
surface
tension,
good
stabilization
coefficient
long
drainage
time.
Laboratory
experiments
demonstrate
produced
Silok8141/SDS/Isobutanol
ternary
system
better
cooling
effect
performance.
And
mechanism
reveals
addition
isobutanol
blocks
liquid
channel
increases
stability.
wide
applicability
design
route
for
alcohol-regulated
been
demonstrated.
Results in Chemistry,
Journal Year:
2024,
Volume and Issue:
8, P. 101573 - 101573
Published: June 1, 2024
The
quercetin/surfactant/solvent
systems
are
investigated
using
UV–VIS
techniques.
reversed
micelles
(empty
and
containing
water
in
their
core)
formed
by
Dioctyl
sodium
sulfosuccinate
Tween
60
(surfactants)
1,4-dioxane
acetone
(solvents)
have
been
used
to
mimic
a
simple
way
certain
structural
aspects
of
natural
membranes,
especially
hydrophobic
parts.
micellar
solutions
were
employed
study
interactions
with
quercetin
check
its
location
micelles.
Obtained
results
allowed
point
that
the
molecules'
preferred
studied
is
palisade
layer.
Furthermore,
distribution
constant,
binding
constant
values
examined
calculated.
