Chemical Engineering Science,
Journal Year:
2024,
Volume and Issue:
298, P. 120317 - 120317
Published: June 1, 2024
The
persistent
presence
of
Polycyclic
Aromatic
Hydrocarbons
(PAHs)
in
soils
and
sediments
due
to
their
chemical
properties
requires
new
methods
mobilize
make
them
more
available
for
remediation
purposes.
In
this
work,
the
evaluation
abilities
eight
different
non-ionic
sugar-based
totally
biodegradable
surfactants,
such
as
synthetic
alkyl
polyglycosides
(APGs),
biological
sophorolipids
(SLs)
rhamnolipids
(RLs),
was
conducted
order
provide
a
preliminary
guideline
selection
surfactant
technical
approach
PAHs
extraction
from
sediment.
reference
sample
marine
sediment
collected
Bagnoli
(Naples,
Italy)
that
characterized
evaluate
level
contamination,
which
resulted
equal
3.51
g
Kg−1
total
PAHs.
By
using
surfactants
solutions
with
concentration
five
times
greater
than
critical
micelle
(Cs
=
5x
CMC),
washing
test
batch
configuration
conducted,
then
followed
by
multiple
consecutive
washes
(MCW)
assess
solubilization
action
selected
surfactants.
results
show
an
evident
advantage
given
employment
each
studied
mobilizing
PAHs,
compared
distilled
water
benchmark.
detail,
APG2
led
3.4
%
mobilization
maximum
peak
9.8
single
compound.
MCW
demonstrates
can
increase
amount
removed,
similar
contribution
wash,
biosurfactants
be
attractive
after
several
thanks
increased
capacity
mobilization.
Interestingly,
high
efficiency
makes
soil
technology
removing
sediments.
Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(3), P. 1069 - 1069
Published: Jan. 26, 2024
Emulsions
have
garnered
significant
attention
within
a
variety
of
industries,
including
pharmaceuticals,
food
production,
and
cosmetics.
The
importance
emulsions
across
these
sectors
is
attributed
to
their
versatility
unique
properties,
such
as
increased
interfacial
area
the
ability
deliver
compounds
insoluble
in
water
or
mask
flavor
unpalatable
ingredients.
A
comprehensive
precise
assessment
physicochemical
structural
features,
stability
an
indispensable
phase
pursuit
new
formulations
improvement
manufacturing
protocols.
characterization
encompasses
array
methodologies
designed
determine
attributes,
droplet
size,
distribution,
concentration,
surface
charge,
others.
In
this
review,
we
explore
techniques
most
frequently
used
characterize
critically
assess
significance
each
method
holds
understanding
behavior
predicting
emulsions.
We
elucidate
basic
principles
methods
while
emphasizing
what
information
can
be
gathered
from
them,
how
effectively
interpret
optimize
properties
emulsions,
crucial
standpoints
other
long-term
easy
processing.
Toxics,
Journal Year:
2025,
Volume and Issue:
13(1), P. 43 - 43
Published: Jan. 8, 2025
Surfactants
play
a
crucial
role
in
various
industrial
applications,
including
detergents
and
personal
care
products.
However,
their
widespread
use
raises
concerns
due
to
potential
environmental
impact
health
risks,
particularly
aquatic
ecosystems,
where
they
can
disrupt
the
balance
of
marine
life
accumulate
water
sources,
posing
challenges
sustainable
development.
This
study
investigates
implications
anionic
nonionic
surfactants,
focusing
on
toxicity,
biodegradation,
skin
irritation
profiles,
especially
when
combined
with
silica
nanoparticles.
Toxicity
assessments
were
conducted
using
bacteria
Vibrio
fischeri
for
toxicity
Lepidium
sativum
seeds
terrestrial
plant
effects,
revealing
that
individual
surfactants
like
alkyl
ether
carboxylic
acid
EC-R12-14E3
exhibit
high
levels,
while
fatty-alcohol
ethoxylate
FAE-R12-14E11
shows
comparatively
lower
impact.
The
surfactant
mixtures
was
analysed,
both
antagonistic
synergistic
effects
depending
used.
addition
nanoparticles
generally
mitigates
overall
whether
used
individually
or
mixtures.
Biodegradation
studies
followed
OECD
301E
301F
guidelines,
indicating
meet
approach
mineralization
threshold,
whereas
reduced
biodegradation
efficacy.
Potential
predicted
through
zein
number
(ZN),
finding
some
combinations
reduce
highlighting
safer
formulation
products
come
into
direct
contact
skin.
Overall,
findings
emphasize
need
careful
selection
nanoparticle
integration
minimize
increase
biodegradability.
Journal of Surfactants and Detergents,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 12, 2025
Abstract
This
work
characterized
the
macroscopic
thermodynamic
properties
of
ionic
micellar
solutions.
Formulation‐composition
studies
were
done
along
one
dimension
by
varying
salinity
(S)
or
oil–water
ratio
(WOR)
in
mixtures
sodium
dodecyl
sulfate,
water,
n
‐heptane,
and
1‐pentanol
at
25°C
1
atm.
Material
balance
multiple
regression
models
used
to
get
partial,
mixed,
excess
molar
volumes.
The
UNIFAC
local
composition
model,
coupled
with
Debye–Hückel
theory,
was
employed
calculate
activity
coefficients
dimensionless
Gibbs
energies
(partial,
excess).
equilibrium
SOW
systems
exhibited
phase
transitions
(WI‐WIII‐WII),
solubilization
increasing
as
increased
constant
WOR.
Solubilization
peaked
optimal
formulation,
further
increases
WOR
enhanced
up
formation
a
single‐phase
system.
Deviations
from
ideal
behavior,
between
aqueous
oil
solutions,
mainly
due
chemical
interaction
solutes
()
respect
solvents
().
Negative
values
energy
mixing
confirmed
stability
liquid
phases
their
extension
liquid–liquid
equilibrium.
response
surfaces
V
=
f(WOR,
S)
G
E
/RT
represent
behavior
solutions
function
physicochemical
formulation.
These
results
can
be
extended
other
colloidal
for
design
formulations
surfactants
anionic
salts,
oriented
diagnosis
resolution
problems
real
systems,
both
laboratory
industrial
level.
Journal of Surfactants and Detergents,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 2, 2025
Abstract
This
article
celebrates
the
illustrious
career
and
scientific
legacy
of
Prof.
Jean‐Louis
Salager,
recipient
prestigious
Samuel
Rosen
Memorial
Award
presented
by
American
Oil
Chemists'
Society
(AOCS)
in
April
2020.
The
award
acknowledges
his
over
50
years
groundbreaking
contributions
to
field
surfactant
chemistry,
honoring
individuals
whose
work
has
had
a
profound
impact
on
both
industry
academia.
tribute
details
Salager's
lifelong
contributions,
which
extend
beyond
remarkable
discoveries
encompass
influence
generations
researchers,
many
whom
now
continue
across
globe.
brings
together
reflections
colleagues
collaborators
from
global
stage—scientists
professionals
inspired
mentorship
vision,
representing
Venezuelan
diaspora
careers
he
shaped
with
guidance
support.
Together,
they
underscore
enduring
Salager
as
teacher,
mentor,
friend,
inspire
shape
chemistry
interfacial
science
around
world.
Cosmetics,
Journal Year:
2023,
Volume and Issue:
11(1), P. 1 - 1
Published: Dec. 19, 2023
The
ever-evolving
cosmetic
industry
requires
advanced
analytical
techniques
to
explore,
understand,
and
optimize
product
performance
at
nano,
micro,
macroscopic
levels.
Nowadays,
these
insights
are
crucial
for
translating
microstructure
behavior
into
properties.
This
knowledge
is
essential
formulate
products
with
a
lower
carbon
footprint
higher
sustainability
profile,
incorporating,
the
same
time,
natural
or
biobased
raw
materials.
These
materials
may
present
challenges
formulators
scientists
due
either
an
inferior
when
compared
their
fossil-derived
counterparts
costs.
comprehensive
review
covers
spectrum
of
methodologies
employed
in
formulation,
including
chromatographic
analyses,
olfactometry,
electronic
nose
technology.
characterization
stability
involving
assessing
parameters
such
as
droplet
size,
zeta
potential,
viscosity,
centrifugation,
surface
tension,
interfacial
tension
also
explored.
discussion
this
paper
extends
role
rheology
understanding
molecular
structure
behavioral
dynamics
samples.
concludes
overview
colorimetric
analysis,
aspect
related
consumer
perception,
followed
by
on
opportunities
associated
using
meta-analysis
cosmetics.
formulation
cosmetics
employing
feedstocks
included,
highlighting
evolving
landscape
science
integration
sustainable
practices.
stands
interface
between
performance,
which
attained
through
detailed
examination
each
method.
know-how
shared
serves
valuable
resource
formulators,
researchers,
professionals
real-world
applications
field
formulation.
ACS Omega,
Journal Year:
2023,
Volume and Issue:
8(10), P. 9040 - 9057
Published: March 2, 2023
Fundamental
studies
have
improved
understanding
of
molecular-level
properties
and
behavior
in
surfactant-oil-water
(SOW)
systems
at
equilibrium
under
nonequilibrium
conditions.
However,
confusion
persists
regarding
the
terms
"microemulsion"
"curvature"
these
systems.
Microemulsion
refers
to
a
single-phase
system
that
does
not
contain
distinct
oil
or
water
droplets
but
least
four
different
structures
with
globular
domains
nanometer
size
sometimes
arbitrary
shape.
The
significance
such
is
unclear.
At
high
surfactant
concentrations
(typically
30
wt
%
more),
single
phase
zone
has
been
identified
which
complex
molecular
arrangements
may
result
light
scattering.
As
concentration
decreases,
referred
as
bicontinuous
microemulsion,
known
middle
Winsor
III
triphasic
system.
Its
structure
described
involving
simple
multiple
films
surrounding
more
less
elongated
excess
globules.
In
cases
where
separates
into
two
three
phases,
I
II
systems,
one
containing
most
surfactant,
also
confusedly
microemulsion.
this
surfactant-rich
phase,
only
curved
objects
are
micellar
soluble
no
real
interface
rather
exchange
molecules
external
liquid
an
ultrafast
pace.
use
term
context
microemulsion
confusing,
particularly
when
applied
merged
nanometer-size
percolating
domains.
work,
we
discuss
"curvature",
four-dimensional
spatiotemporal
model
proposed
concerning
SOW
equilibrated
near
optimum
formulation.
This
explains
motion
due
Brownian
movement,
quick
thermal
fluctuation,
limited
short
distance.
resulting
observation
will
be
average
time
space,
leading
permanent
change
local
microcurvature
aggregate,
thus
changing
from
micelle-like
inverse
order
over
extremely
time.
"microcurvature"
used
explain
small
variations
globule
indicates
close-to-zero
mean
curvature
surfactant-containing
film
surface
Journal of Surfactants and Detergents,
Journal Year:
2023,
Volume and Issue:
27(1), P. 5 - 36
Published: Sept. 11, 2023
Abstract
The
optimum
formulation
in
a
surfactant–oil–water
(SOW)
system
is
defined
as
the
physicochemical
situation
at
which
surfactant
adsorbed
interface
exhibits
exactly
equal
interactions
for
both
oil
and
water.
Identifying
of
SOW
systems
crucial
various
industrial
applications,
ranging
from
pharmaceuticals
to
cosmetics
petroleum
issues
like
dehydration
enhanced
recovery.
Multiple
techniques
are
available
identify
formulation,
often
with
its
own
advantages
limitations.
In
this
comprehensive
review,
we
provide
an
in‐depth
analysis
systematic
use
scans
systems.
We
critically
assess
different
methods,
including
conventional
ones,
such
phase
behavior
observation,
determination
minimum
interfacial
tension
equilibrated
systems,
localization
emulsion
stability
using
scans.
also
mention
new
promising
technique
that
can
be
applied
practice,
oscillating
spinning
drop
rheology
(OSDIR)
well
others
allow
understanding
some
structural
features
domains
present
surfactant‐rich
Among
these
dynamic
light
scattering
(DLS),
small
angle
(SAXS
SANS),
nuclear
magnetic
resonance
(NMR),
X‐ray
microcomputed
tomography
(Micro‐CT),
differential
scanning
calorimeter
(DSC),
found
literature.
Finally,
discuss
potentially
unusual
behaviors
appear
complex
thus
providing
guidance
on
selection
most
suitable
method
tailored
specific
application.
Journal of Surfactants and Detergents,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 21, 2024
Abstract
This
comprehensive
and
critical
review
explores
the
synthesis
applications
of
carbohydrate‐based
surfactants
within
biorefinery
concept,
focusing
on
biobased
sugar‐head
molecules
suitable
for
use
across
several
manufacturing
sectors,
including
cosmetics,
pharmaceuticals,
household
products,
detergents,
foods.
The
main
focus
relies
sustainable
alternatives
to
conventional
surfactants,
which
could
reduce
final
carbon
footprint
industrial
feedstocks
products.
A
thorough
analysis
raw
materials,
highlighting
significance
feedstock
sources,
current
rhamnolipid
biosurfactants
production
trends,
is
presented.
Key
organic
reactions
sorbitan
esters,
sucrose
alkyl
polyglycosides,
fatty
acid
glucamines,
such
as
glycosidation,
acylation,
etherification,
well
rhamnolipids
through
fermentation
are
described.
Given
scarce
literature
characterization
these
surfactant
types
hydrophilic–lipophilic
deviation
(HLD)
framework,
contribution
parameter
(SCP)
in
HLD
equation
critically
assessed.
economic
landscape
also
discussed,
noting
significant
growth
biosurfactant
market,
driven
by
environmental
awareness
regulatory
changes,
with
projections
indicating
a
substantial
market
increase
forthcoming
years.
Finally,
promising
potential
generative
artificial
intelligence
(AI)
developing
customized
molecules,
optimized
properties
targeted
applications,
emphasized
avenue
future
research.