Journal of Applied Polymer Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 2, 2024
ABSTRACT
Nanofiltration
(NF)
membranes
play
a
huge
role
in
industrial
manufacturing
with
their
unique
selective
permeability.
Membrane
material
and
structure
are
the
main
factors
affecting
effectiveness
of
NF
separation.
Typically,
produced
by
interfacial
polymerization
(IP).
Therefore,
control
IP
process
is
particularly
important.
This
work
provides
membrane
preparation
combining
internal
modulation
separation
layer
surface
modification.
The
diffusion
polyethyleneimine
(PEI)
molecules
accelerated
introduction
ethanol
cetyltrimethylammonium
bromide
into
PEI
aqueous
phase
solution,
resulting
formation
loose
interior.
In
addition,
high
selectivity
maintained
molecular
weight
modifying.
After
optimizing
process,
permeate
flux
can
be
increased
compared
to
blank
group
(MgCl
2
desalination
from
90%
97%,
17
35
L
m
−2
h
−1
).
PEI/TMC
also
show
excellent
properties
mixed
salt
applications
for
magnesium‐lithium
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(11), С. 14321 - 14332
Опубликована: Март 6, 2024
High-quality
thin-film
composite
(TFC)
membranes
with
high
selectivity
and
permeability
have
great
significance
owing
to
their
practical
applications,
specifically
for
the
accurate
differentiation
of
monovalent
divalent
ions.
However,
trade-off
effect
between
is
still
a
big
challenge
due
difficult
structure
adjustment
selective
layer.
Herein,
polydopamine
(PDA)
functionalized
hydrophobic
long
alkane
chain
was
first
explored
as
functional
amphiphilic
interlayer
synthesize
high-quality
TFC
via
confined
interfacial
polymerization
(IP)
reaction.
The
not
only
restricted
formation
polyamide
(PA)
matrix
in
pores
substrate
but
also
accelerated
spatially
more
homogeneous
formed
PA
active
layer
uniform
pore
size
distribution.
method
may
provide
an
effective
principle
construction
versatile
polyamide-based
perm-selectivity
on
various
supports.
NaCl/Na2SO4
separation
factor
D-8/PA
membrane
reached
204.07,
while
flux
increased
up
25.71
L
m–2
h–1
bar–1.
This
progress
provides
feasible
way
devisable
creative
industrial
application.
