Polymer Engineering and Science,
Journal Year:
2024,
Volume and Issue:
64(5), P. 2278 - 2288
Published: March 11, 2024
Abstract
Cellulose
diacetate
(CDA)
and
triacetate
(CTA)
were
derived
from
Egyptian
cotton
to
fabricate
reverse
osmosis
(RO)
membranes.
The
Pphase
inversion
method
was
utilized
for
the
production
of
CDA‐based
Comprehensive
characterization
these
membranes
involved
structural,
morphologial,
hydrophilic
property
analyses
through
techniques
such
as
nuclear
magnetic
resonance
(NMR),
infrared
spectroscopy,
thermal
gravimetric
analysis
(TGA),
scanning
electron
microscopy
(SEM),
atomic
force
(AFM),
contact
angle
measurements.
NMR
spectra
indicated
a
degree
substitution
2.9
CTA
2
CDA.
resulting
RO
membrane
demonstrated
water
flux
6.1
L/m
·h
salt
rejection
90.3%.
Annealing
led
an
enhanced
top
layer
with
reduced
defects
macrovoids
in
support
layer.
Moreover,
grafting
15
wt%
2‐acrylamidopropane‐2‐methyl
sulphonic
acid
improved
96.2%
8.7
.h.
These
findings
underscore
significant
performance
enhancements
achieved
both
annealing
processes
Membranes,
Journal Year:
2023,
Volume and Issue:
13(1), P. 58 - 58
Published: Jan. 2, 2023
Membrane
technology
is
an
essential
tool
for
water
treatment
and
biomedical
applications.
Despite
their
extensive
use
in
these
fields,
polymeric-based
membranes
still
face
several
challenges,
including
instability,
low
mechanical
strength,
propensity
to
fouling.
The
latter
point
has
attracted
the
attention
of
numerous
teams
worldwide
developing
antifouling
materials
interfaces.
A
convenient
method
prepare
via
physical
blending
(or
simply
blending),
which
a
one-step
that
consists
mixing
main
matrix
polymer
material
prior
casting
film
formation
by
phase
inversion
process.
This
review
focuses
on
recent
development
(past
10
years)
this
uses
different
phase-inversion
processes
liquid-induced
separation,
vapor
induced
thermally
separation.
Antifouling
used
studies
polymers,
metals,
ceramics,
carbon-based
porous
nanomaterials
are
also
surveyed.
Furthermore,
assessment
properties
performances
extensively
summarized.
Finally,
we
conclude
with
list
technical
scientific
challenges
need
be
overcome
improve
functional
widen
range
applications
prepared
modification.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(14), P. 2021 - 2021
Published: July 15, 2024
Poly(vinyl
alcohol)
(PVA)
is
a
versatile
synthetic
polymer,
used
for
the
design
of
hydrogels,
porous
membranes
and
films.
Its
solubility
in
water,
film-
hydrogel-forming
capabilities,
non-toxicity,
crystallinity
excellent
mechanical
properties,
chemical
inertness
stability
towards
biological
fluids,
superior
oxygen
gas
barrier
good
printability
availability
(relatively
low
production
cost)
are
main
aspects
that
make
PVA
suitable
variety
applications,
from
biomedical
pharmaceutical
uses
to
sensing
devices,
packaging
materials
or
wastewater
treatment.
However,
pure
present
limited
flexibility
poor
biocompatibility
biodegradability,
which
restrict
its
use
alone
various
applications.
mixed
with
other
polymers
biomolecules
(polysaccharides,
proteins,
peptides,
amino
acids
etc.),
as
well
inorganic/organic
compounds,
generates
wide
PVA’s
shortcomings
considerably
improved,
new
functionalities
obtained.
Also,
transformation
brings
features
opens
door
unexpected
uses.
The
review
focused
on
recent
advances
PVA-based
hydrogels.
Environmental Chemistry Letters,
Journal Year:
2024,
Volume and Issue:
22(4), P. 1615 - 1621
Published: March 1, 2024
Abstract
The
recovery
of
pure
water
and
valuable
substances
from
wastewater
is
a
major
challenge
in
the
context
circular
economy,
requiring
advanced
separation
methods.
However,
actual
membrane
techniques
such
as
forward
osmosis
are
limited
by
fouling
selectivity.
Here,
we
synthesized
composite
membranes
crosslinking
polyvinyl
alcohol
hydrogel,
using
both
glutaraldehyde
borax
agents,
on
top
cellulose
ester
membranes.
We
tested
these
model
real
wastewater.
Results
show
that
retain
ammonium
effectively,
maintain
surface
electroneutrality,
exhibit
remarkable
resistance
to
organic
biological
contaminants.
This
explained
high
hydrophilicity
after
application
hydrogel
layer.
RSC Applied Polymers,
Journal Year:
2024,
Volume and Issue:
2(4), P. 642 - 655
Published: Jan. 1, 2024
Electrospun
nonwoven
membranes
from
bio-based
PA
6.9
can
serve
as
efficient
filters
for
the
removal
of
microplastic
water
and
air
well
remediation
oily
wastewater.
Polymers,
Journal Year:
2023,
Volume and Issue:
15(16), P. 3492 - 3492
Published: Aug. 21, 2023
Oxidase
and
peroxidase
enzymes
have
attracted
attention
in
various
biotechnological
industries
due
to
their
ease
of
synthesis,
wide
range
applications,
operation
under
mild
conditions.
Their
applicability,
however,
is
limited
by
poor
stability
harsher
conditions
non-reusability.
As
a
result,
several
approaches
such
as
enzyme
engineering,
medium
immobilization
been
used
improve
the
properties.
Several
materials
supports
for
these
increase
reusability.
This
review
focusses
on
oxidase
metal
oxide
nanoparticle-polymer
composite
different
methods
achieve
immobilization.
The
application
enzyme-metal/metal
oxide-polymer
biocatalysts
biosensing
hydrogen
peroxide,
glucose,
pesticides,
herbicides
well
blood
components
cholesterol,
urea,
dopamine,
xanthine
extensively
reviewed.
wastewater
treatment
through
degradation
dyes,
other
organic
compounds
has
also
discussed.
