ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(43), P. 59245 - 59255
Published: Oct. 21, 2024
The
outbreak
of
the
2019
coronavirus
pandemic
has
raised
worldwide
attention
about
self-protection
from
airborne
diseases.
Air
filtration
and
wearing
mask
have
been
proven
to
be
effective
measures
in
reducing
pathogenic
aerosol's
transmission.
Those
lead
an
increasing
demand
high-efficient
filters.
However,
nonbiodegradable
polymeric
materials
used
filters
can
accumulate
landfills
or
ecosystems,
potentially
causing
pollution
after
improper
disposals.
Sustainable
biodegradable
alternatives
current
filter
are
urgently
needed.
Yet,
very
few
commercial
meet
these
needs.
In
this
paper,
a
novel
quaternary
ammonium-halamine
compound
containing
Schiff
base
sandwich-structured
preparation
strategy
were
developed.
obtained
multifunctional
consists
PLA
fleece
as
support
layer,
antimicrobial
coating
for
bactericidal
function,
nanofibrous
membrane
particle
removal.
demonstrates
strong
properties,
killing
97%
Escherichia
coli
Staphylococcus
aureus
at
biocide
concentration
only
1
mg/mL.
It
rapidly
kill
bacteria
within
5
min
contact
without
leaching
substances.
Furthermore,
it
boasts
performance
with
success
rate
over
99.99%
pressure
drop
45
Pa,
which
surpasses
that
N95
PM0.3.
Even
under
humid
conditions,
maintains
excellent
performance.
Our
reusability
testing
result
developed
shows
simple
halogenation
treatment
renew
halamines
restore
filter's
activity.
degrade
natural
soil.
successful
development
sustainable
material
offers
new
alternative
high-performance
air
quality
control
protect
public
health.
Foods,
Journal Year:
2025,
Volume and Issue:
14(8), P. 1318 - 1318
Published: April 11, 2025
Postharvest
preservation
of
fruits
is
one
the
key
issues
in
current
agriculture
and
food
processing
industry.
Surface
coating
treatment,
a
promising
technology
for
postharvest
fruit
preservation,
has
gathered
significant
attention
due
to
its
ability
reduce
water
loss,
regulate
gas
exchange,
inhibit
respiration,
thereby
achieving
preservation.
Among
them,
chitosan-based
wide
application
prospect
superior
film-forming
capability,
high
biosecurity,
range
sources,
etc.
This
review
summarizes
structural
features,
physicochemical
properties,
modification
strategies,
mechanisms
coatings,
focusing
on
their
applications
storage.
Unlike
prior
works,
it
highlights
advanced
modifications
(e.g.,
nanocomposite,
multifunctional
grafting)
that
enhance
antimicrobial
activity,
mechanical
strength,
environmental
adaptability.
Challenges
preservation—such
as
microbial
resistance
stability—are
analyzed,
with
solutions
proposed
via
material
innovation.
The
discussion
industrial
scalability
emphasizes
chitosan’s
biodegradability,
cost-effectiveness,
alignment
sustainable
agriculture,
while
addressing
technical
bottlenecks.
work
bridges
fundamental
research
practical
use,
advancing
coatings
toward
greener,
safer,
scalable
solutions.
ACS Omega,
Journal Year:
2025,
Volume and Issue:
10(19), P. 19361 - 19378
Published: May 5, 2025
The
growing
demand
for
sustainable
food
packaging
has
led
to
the
development
of
biobased
and
biodegradable
materials
that
minimize
environmental
impact
conventional
plastics.
This
study
introduces
an
eco-friendly
thin
film
incorporating
tannic
acid
(TA)
into
a
chitosan-poly-(vinyl
alcohol)
(CPT)
matrix
preserve
fresh
garlic.
film,
produced
through
solvent
casting,
was
thoroughly
characterized
using
several
analytical
techniques.
Fourier-transform
infrared
spectroscopy
(FTIR)
X-ray
diffraction
(XRD)
confirmed
strong
molecular
interactions
increased
crystallinity,
which
enhanced
material's
compatibility
structural
integrity.
Atomic
force
microscopy
(AFM)
revealed
surface
roughness
0.167
nm,
thermogravimetric
analysis
(TGA)
demonstrated
thermal
stability
up
463°C.
CPT
exhibited
notable
antimicrobial
activity
against
Staphylococcus
aureus,
Pseudomonas
aeruginosa,
Aspergillus
niger.
Packaging
trials
showed
effectively
extended
garlic
freshness
24
days.
These
findings
suggest
offers
promising
solution
by
combining
active
preservation
with
real-time
quality
monitoring.
