ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
13(1), С. 507 - 517
Опубликована: Дек. 19, 2024
Ethyl
cellulose
(EC)
is
a
biocompatible,
renewable,
and
recyclable
material
with
diverse
sources,
making
it
an
attractive
candidate
for
industrial
applications.
Electrospinning
has
gained
significant
attention
the
production
of
EC
fibers.
However,
conventional
electrospinning
methods
face
challenges
such
as
bead
formation,
low
yield,
absence
porous
internal
structures,
limiting
both
functional
performance
scalability.
This
study
presents
optimized
approach
producing
fibers
by
using
gravity-driven
ultrahigh-speed
(GUHS-ES)
system.
system
leverages
gravity
to
reshape
Taylor
cone
morphology
during
electrospinning,
enhancing
stability
dramatically
increasing
throughput.
As
flow
rates
increase,
contracts
inward,
while
tip
structure
expands
stabilizes,
reaching
maximum
size
at
ultrahigh
(100–150
mL/h).
unique
enables
fiber
rate
24.5
g/h,
hundreds
times
greater
than
techniques.
Another
advantage
GUHS-ES
its
ability
achieve
high
diameter
uniformity
adjustable
porosity.
At
rates,
pore
sizes
reached
321
nm.
The
highly
exhibited
absorption
capacity
56.6
110.7
their
weight,
exceeding
most
previously
reported
oil-absorbing
materials
demonstrating
efficacy
rapid
waste
oil
absorption.
green,
efficient
technology
represents
promising
advancement
large-scale
application
natural
polymer
broad
implications
sustainable
processes.
Polysaccharides,
Год журнала:
2025,
Номер
6(1), С. 8 - 8
Опубликована: Янв. 30, 2025
The
printing
and
dyeing
industries
generate
wastewater
containing
toxic,
hard-to-degrade
organic
dyes
like
methylene
blue
(MB).
Recent
research
focuses
on
biodegradable,
renewable
materials
such
as
cellulose-based
absorbents
to
address
this
issue.
This
study
investigates
bacterial
cellulose
(BC)
functionalized
with
citric
acid
a
sustainable
adsorbent
for
MB
removal.
BC,
by-product
of
kombucha
fermentation,
is
acid,
its
adsorption
capacity
analyzed.
BC
production
reaches
3.65
±
0.16
g
L−1
by
day
12.
Using
0.05
(FBC)
at
pH
7,
maximum
13.22
1.27
mg
g−1
achieved
600
over
60
min.
mechanism
complex,
both
pseudo-first-
pseudo-second-order
models
fitting
well
20
°C,
40
70
°C.
carboxyl
groups
bind
the
hydroxyl
fibers
via
esterification,
altering
material’s
charge,
reactivity,
thermal,
crystallinity
properties.
functionalization
enhances
BC’s
capacity,
making
it
promising
material
bioremediation
in
circular
systems.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 13, 2025
Achieving
reversible
stiffening
of
biopolymer
networks
in
a
controlled
manner
remains
challenging
topic
materials
science,
especially
when
trying
to
assess
the
following
changes
mechanical
material
properties
real
time.
To
address
these
challenges,
we
here
utilize
custom-made
measurement
setup
that
allows
us
manipulate
cross-linking
state
alginate-based
hydrogels
situ
while
quantifying
achieved
alterations
viscoelastic
response
networks.
Interpolymer
connections
are
created
by
combination
light-induced,
covalent
cross-links,
ionic
and
DNA-based
where
latter
two
can
be
successfully
removed
again
employing
either
chelating
agents
(e.g.,
ethylenediaminetetraacetic
acid
citrate)
or
suitable
displacement
DNA
strands.
In
part,
this
range
different
options
mentioned
is
inter
alia
made
possible
incorporating
glycoprotein
mucin
into
alginate
system,
which
also
for
starting
(∼0.2-400
Pa),
intermediate
(∼25
Pa-1.6
kPa),
final
stiffnesses
(∼4
Pa-1.2
kPa)
mixed
hydrogel
matrix.
At
same
time,
presence
mucins
(1-4%
(w/v))
mixture
enhances
cytocompatible
improving
its
antibacterial
characteristics.
Such
well-controllable
alginate/mucin
with
dynamically
switchable
will
likely
find
broad
applications
cell
cultivation
studies
tissue
engineering
applications.
