ACS Applied Polymer Materials,
Год журнала:
2023,
Номер
5(4), С. 3065 - 3078
Опубликована: Март 30, 2023
Achieving
fibers
that
change
color
with
temperature
may
be
promising
for
applications
such
as
sensors
and
smart
wearable
textiles
(woven
nonwoven).
In
this
study,
temperature-responsive
cholesteryl
ester
liquid
crystal
formulations
were
blended
polycaprolactone
or
polystyrene
using
chloroform
a
solvent
electrospinning
to
achieve
thermochromic
nonwoven
products.
Using
polystyrene,
beaded
achieved
the
behavior
was
only
observed
under
polarized
light
microscopy.
To
visible
by
video
camera
phone,
used
carrier
polymer.
The
comparison
between
provides
insight
into
polymer/solvent
selection
achieving
responsive
materials
via
blend
processing.
High
loadings
of
polycaprolactone,
blends
10
wt
%
15
formed
(fiber
contained
60
crystal).
Colored
could
varying
formulation
crystal.
For
example,
green
at
ambient
conditions
resulted
in
(22
°C).
Nonwoven
dynamic
also
demonstrated.
colorless
underwent
reversible
from
red
blue
when
heated
cooled
32
37
°C.
When
incorporated
fibers,
fiber
mats
changed
white
°C
over
multiple
cycles.
Nano-Micro Letters,
Год журнала:
2023,
Номер
15(1)
Опубликована: Март 21, 2023
Abstract
The
seawater
desalination
based
on
solar-driven
interfacial
evaporation
has
emerged
as
a
promising
technique
to
alleviate
the
global
crisis
freshwater
shortage.
However,
achieving
high
performance
actual,
oil-contaminated
remains
critical
challenge,
because
transport
channels
and
interfaces
of
current
solar
evaporators
are
easily
blocked
by
oil
slicks,
resulting
in
undermined
rate
conversion
efficiency.
Herein,
we
propose
facile
strategy
for
fabricating
modularized
evaporator
flexible
MXene
aerogels
with
arbitrarily
tunable,
highly
ordered
cellular/lamellar
pore
structures
high-efficiency
interception
desalination.
core
design
is
creation
1D
fibrous
MXenes
sufficiently
large
aspect
ratios,
whose
superior
flexibility
plentiful
link
forms
lay
basis
controllable
3D
assembly
into
more
complicated
structures.
cellular
structure
responsible
effective
contaminants
rejection
due
multi-sieving
effect
achieved
omnipresent,
isotropic
wall
apertures
together
underwater
superhydrophobicity,
while
lamellar
favorable
rapid
presence
continuous,
large-area
channels.
delivers
best
(1.48
kg
m
−2
h
−1
)
efficiency
(92.08%)
among
all
MXene-based
materials
seawater."Image
missing"
ACS Sustainable Chemistry & Engineering,
Год журнала:
2023,
Номер
11(10), С. 4279 - 4288
Опубликована: Март 2, 2023
In
contrast
to
the
commonly
used
nondegradable
melt-blown
nonwovens,
polylactic
acid
(PLA)
nonwovens
are
renewable
and
biodegradable,
making
them
very
environmentally
friendly
at
their
end
of
life.
However,
strength
toughness
PLA
generally
insufficient
for
practical
applications.
Herein,
we
report
a
straightforward
universal
strategy
fabricating
with
superior
mechanical
properties.
this
process,
hierarchical
controlling
high-temperature
high-speed
airflow
considerably
increases
polymeric
chain
orientation
crystallization
PLA.
High-molecular-weight
(Mw)
chains
can
be
entangled
reduce
negative
effect
excessive
on
elongation,
resulting
in
gain
same
time.
The
exhibit
enhanced
(1.8
MPa,
up
by
157%),
higher
elongation
(35.6%,
256%),
excellent
(0.59
MJ/m3,
788%).
Additionally,
plausible
tensile
failure
mechanism
is
proposed
based
fracture
process.
Strikingly,
high
particulate
matter
(PM0.3),
removal
efficiency
(92.6%),
low
pressure
drop
(12.3
Pa).
successful
preparation
properties
will
satiate
growing
demand
sustainability,
personal
protection,
environmental
protection.
Nano Letters,
Год журнала:
2023,
Номер
23(3), С. 1044 - 1051
Опубликована: Янв. 19, 2023
Electrospun
fibers
have
received
wide
attention
in
various
fields
ranging
from
the
environment
and
healthcare
to
energy.
However,
nearly
all
electrospun
suffer
a
pseudonanoscale
diameter,
resulting
fabricated
membranes
with
large
pore
size
limited
separation
performance.
Herein,
we
report
novel
strategy
based
on
manipulating
equilibrium
of
stretch
deformation
phase
jets
develop
true-nanoscale
for
effective
selective
separation.
The
obtained
present
diameters
(∼67
nm),
1
order
magnitude
less
than
those
common
fibers,
which
endows
resultant
remarkable
nanostructural
characteristics
performances
areas
protective
textiles
(waterproofness
113
kPa
breathability
4.1
kg
m-2
d-1),
air
filtration
(efficiency
99.3%
pressure
drop
127.4
Pa),
water
purification
(flux
81.5
h-1
salt
rejection
99.94%).
This
work
may
shed
light
developing
high-performance
materials
applications.
Plants,
Год журнала:
2023,
Номер
12(12), С. 2337 - 2337
Опубликована: Июнь 15, 2023
Ammi
visnaga
is
a
biennial
or
annual
herbaceous
plant
belonging
to
the
family
Apiaceae.
For
first
time,
silver
nanoparticles
were
synthesized
using
an
extract
of
this
plant.
Biofilms
are
rich
source
many
pathogenic
organisms
and,
thus,
can
be
genesis
various
disease
outbreaks.
In
addition,
treatment
cancer
still
critical
drawback
for
mankind.
The
primary
purpose
research
work
was
comparatively
analyze
antibiofilms
against
Staphylococcus
aureus,
photocatalytic
activity
Eosin
Y,
and
in
vitro
anticancer
HeLa
cell
line
extract.
systematic
characterization
carried
out
UV-Visible
spectroscopy
(UV-Vis),
scanning
electron
microscopy
(SEM),
energy-dispersive
X-ray
(EDX),
atomic
force
(AFM),
dynamic
light
scattering
(DLS),
zeta
potential,
diffraction
(XRD).
initial
performed
with
UV-Vis
spectroscopy,
where
peak
appeared
at
435
nm,
which
indicated
SPR
band
nanoparticles.
AFM
SEM
determine
morphology
shape
nanoparticles,
while
EDX
confirmed
presence
Ag
spectra.
crystalline
character
concluded
XRD.
then
subjected
biological
activities.
antibacterial
evaluated
by
determining
inhibition
biofilm
formation
aureus
crystal
violet
assay.
response
AgNPs
cellular
growth
found
dose
dependent.
Green-synthesized
showed
99%
bacteria,
excellent
assay
IC50
concentration
17.1
±
0.6
µg/mL
100%
inhibition,
photodegradation
toxic
organic
dye
Y
up
50%.
Moreover,
effect
pH
dosage
photocatalyst
also
measured
optimize
reaction
conditions
maximum
potential.
Therefore,
used
wastewater
contaminated
dyes,
biofilms,
lines.
Nano Letters,
Год журнала:
2022,
Номер
22(23), С. 9485 - 9492
Опубликована: Дек. 5, 2022
Face
masks,
as
effective
measures
for
passive
air
pollution
control,
are
of
fundamental
importance,
especially
with
the
outbreak
emerging
infectious
diseases.
Most
existing
masks
dense
or
thick,
resulting
in
a
lack
thermal/humidity
comfort
level;
despite
being
worn
tightly,
they
show
limited
PM0.3/pathogen
removal.
Here,
we
use
facile
strategy
to
create
air-conditioned
using
heterogeneous
nanofibrous
networks,
based
on
an
electrospinning/netting
technique.
Manipulation
phase
separation
and
self-assembly
charged
jet/droplets
by
control
humidity-induced
double
diffusion
Taylor
cone
instability
allows
generation
consisting
radiative
cooling
wrinkled
nanofibers
2D
nanostructured
networks.
Our
desirable
microenvironment
high-efficiency
PM0.3
removal
(>99.988%),
low
resistance
(0.07%
atmospheric
pressure),
remarkable
capacity
(∼2.8
°C
temperature
∼10%
humidity
drop),
making
high-performance
filtration
temperature/humidity
management
“always
online”.
This
work
should
make
possible
development
high-performance,
energy-saving,
scalable
fiber
textiles
various
applications.
Applied Materials Today,
Год журнала:
2023,
Номер
32, С. 101833 - 101833
Опубликована: Май 2, 2023
Face
masks
have
proven
to
be
a
useful
protection
from
airborne
viruses
and
bacteria,
especially
in
the
recent
years
pandemic
outbreak
when
they
effectively
lowered
risk
of
infection
Coronavirus
disease
(COVID-19)
or
Omicron
variants,
being
recognized
as
one
main
protective
measures
adopted
by
World
Health
Organization
(WHO).
The
need
for
improving
filtering
efficiency
performance
prevent
penetration
fine
particulate
matter
(PM),
which
can
potential
bacteria
virus
carriers,
has
led
research
into
developing
new
methods
techniques
face
mask
fabrication.
In
this
perspective,
Electrospinning
shown
most
efficient
technique
get
either
synthetic
natural
polymers-based
fibers
with
size
down
nanoscale
providing
remarkable
terms
both
particle
filtration
breathability.
aim
Review
is
give
further
insight
implementation
electrospun
nanofibers
realization
next
generation
masks,
functionalized
membranes
via
addiction
active
material
polymer
solutions
that
optimal
features
about
antibacterial,
antiviral,
self-sterilization,
electrical
energy
storage
capabilities.
Furthermore,
advances
regarding
use
renewable
materials
green
solvent
strategies
improve
sustainability
fabricate
eco-friendly
filters
are
here
discussed,
view
large-scale
nanofiber
production
where
traditional
membrane
manufacturing
may
result
high
environmental
health
risk.
Nanomaterials,
Год журнала:
2023,
Номер
13(9), С. 1454 - 1454
Опубликована: Апрель 24, 2023
Nanotechnology
has
allowed
for
significant
progress
in
architectural,
artistic,
archaeological,
or
museum
heritage
conservation
repairing
and
preventing
damages
produced
by
deterioration
agents
(weathering,
contaminants,
biological
actions).
This
review
analyzes
the
current
treatments
using
nanomaterials,
including
consolidants,
biocides,
hydrophobic
protectives,
mechanical
resistance
improvers,
flame-retardants,
multifunctional
nanocomposites.
Unfortunately,
nanomaterials
can
affect
human
animal
health,
altering
environment.
Right
now,
it
is
a
priority
to
stop
analyze
its
advantages
disadvantages.
Therefore,
aims
are
raise
awareness
about
nanotoxicity
risks
during
handling
subsequent
environmental
exposure
all
those
directly
indirectly
involved
processes.
It
reports
human-body
interaction
mechanisms
provides
guidelines
controlling
toxicity,
mentioning
toxicity
research
of
main
compounds
emphasizing
need
provide
more
information
morphological,
structural,
specific
features
that
ultimately
contribute
understanding
their
toxicity.
documents
international
organizations
(European
Commission,
NIOSH,
OECD,
Countries
Normative)
worker
protection,
isolation,
laboratory
ventilation
control,
debris
management.
Furthermore,
qualitative
risk
assessment
methods,
management
strategies,
dose
focus/receptor
relationship,
besides
latest
trends
masks
gas
emissions
control
devices,
discussing
ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(36), С. 42900 - 42911
Опубликована: Авг. 30, 2023
The
rapid
advancement
of
communication
technology
has
substantially
increased
the
demand
for
advanced
electronic
packaging
materials
with
high
thermal
conductivity
and
outstanding
electrical
insulation
properties.
In
this
study,
we
design
polyvinyl
alcohol/polydopamine-modified
boron
nitride
nanosheet
(PVA/BNNS@PDA)
nanocomposites
hierarchical
structures
by
combining
electrospinning,
vacuum
filtration
deposition,
hot
pressing.
modified
BNNS@PDA
improves
interaction
between
filler
polymer
matrix
while
reducing
interfacial
resistance,
resulting
in
superior
conductivity,
excellent
insulation,
perfect
flexibility.
PVA/BNNS@PDA
possess
an
ultrahigh
in-plane
16.6
W/(m·K)
at
35.54
wt
%
content.
Even
after
2000
folds,
do
not
undergo
any
crack,
showing
their
behavior.
Furthermore,
exhibit
a
volume
resistivity
above
1014
Ω·cm,
which
is
well
standard
insulating
materials.
Based
on
these
results,
work
provides
novel
method
to
produce
offering
new
perspective
management
