Journal of Applied Polymer Science,
Journal Year:
2024,
Volume and Issue:
141(15)
Published: Jan. 25, 2024
Abstract
In
order
to
enhance
the
oil–water
separation
properties
of
polyurethane
foam
(PFU),
hydrophobic
silica
nanoparticles
(H‐SiO
2
NPs)
were
firstly
prepared
by
incorporating
long
alkyl
chains
into
nanoparticles,
and
then,
it
was
combined
with
PFU
in
situ
loading
fabricate
a
NPs/PUF).
When
amount
H‐SiO
NPs
10%,
water
contact
angle
modified
NPs/PUF‐10
reached
147
±
1°,
which
proved
highly
hydrophobic.
The
elongation
at
break
increased
202%,
indicated
that
had
better
resilience
recyclability.
addition,
total
pore
area
porosity
16.24
m
/g
88.43%
from
5.46
2.11%,
provided
more
storage
space
for
adsorption.
experiment
showed
adsorption
capacity
most
light
oils
11–13
g/g,
dichloromethane
as
high
40.5
g/g.
After
10
adsorption–desorption
cycles,
only
decreased
15.6
14.5
still
93%
initial
capacity.
NPs/PUF
represents
good
capacity,
recyclability,
so
carrier
has
potential
application
treatment
marine
oil
spills.
Coatings,
Journal Year:
2023,
Volume and Issue:
13(5), P. 954 - 954
Published: May 19, 2023
Oil–water
separation
using
special
wettability
materials
has
received
much
attention
due
to
its
low
energy
consumption
and
high
efficiency.
Herein,
a
fluorine-free
superhydrophobic
cotton
fabric
(PDMS/STA-coated
fabric)
was
successfully
prepared
by
simple
impregnation
method
hydroxyl-capped
polydimethylsiloxane
(PDMS-OH),
tetraethoxysilane
(TEOS),
stearic
acid
(STA)
as
precursors.
The
investigation
found
that
the
cross-linking
reactions
between
hydroxyl
groups
of
PDMS-OH
hydrolyzed
TEOS
enabled
strong
interaction
fabric.
Furthermore,
suitable
roughness
surface
coated
established
introducing
STA
long
chain
structure.
contact
angle
this
composite
can
reach
158.7°
under
optimal
conditions
desired
roughness.
oil/water
efficiency
PDMS/STA-coated
is
higher
than
90%
even
after
10
cycles
oil–water
separation,
oil
flux
11862.42
L
m−2
h−1.
In
addition,
exhibits
excellent
chemical
stability
durability
extreme
such
(HCl,
pH
=
1~2)
alkali
(NaOH,
13~14),
hydrophobicity
decreased
147°
300
abrasion
testing.
