Nanoscale,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
The
increasing
demand
for
sustainable
solutions
to
address
environmental
and
energy
challenges
has
driven
the
development
of
advanced
materials.
This
paper
highlights
recent
advancements
in
nanofibrous
membranes.
ACS Applied Polymer Materials,
Journal Year:
2023,
Volume and Issue:
5(6), P. 4372 - 4379
Published: May 5, 2023
Non-biodegradable
polypropylene,
which
poses
a
serious
threat
to
the
environment,
is
most
utilized
material
in
air
filtration
systems.
Moreover,
under
conditions
of
high
temperature
and
humidity,
electrostatic
charge
melt-blown
nonwoven
fabrics
treated
with
traditional
corona
electrets
will
quickly
dissipate.
Here,
biodegradable
polylactic
acid,
calcium
stearate,
an
innovative
hydrocharging
technique
are
reported
develop
environmentally
friendly
acid/calcium
stearate
stability.
Compared
acid
fabrics,
crystallization
structure
storage
have
been
greatly
improved
due
presence
stearate.
In
PM0.3,
it
exhibited
efficiency
(96.78%),
low
pressure
drop
(65.20
Pa),
good
quality
factor
(0.053
Pa–1),
can
meet
N95
respirator
standard.
Furthermore,
worth
mentioning
that
performance
remained
at
level
(>95.00%)
after
2
months.
Importantly,
based
on
test
analysis
surface
potential,
crystallization,
distribution,
we
proposed
plausible
generation
stable
mechanisms.
It
demonstrated
more
potential
for
electret
smart
respirators
as
further
possible
step
research
field.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(32), P. 12086 - 12100
Published: Aug. 1, 2024
2,5-Thiophenedicarboxylic
acid
(TDCA)
is
a
biobased
building
block
for
aromatic–aliphatic
copolyesters.
This
study
synthesized
poly(propylene
succinate-co-thiophenedicarboxylate)
(PPSTh)
and
adipate-co-thiophenedicarboxylate)
(PPATh)
via
two-step
melt
polycondensation.
PPATh70
exhibits
the
highest
melting
temperature
at
144.8
°C.
Crystallization
kinetics
indicate
that
diol-TDCA
segments
primarily
form
crystalline
phases
in
PPXThs,
with
long
aliphatic
units
enhancing
crystallization.
PPXThs
containing
over
50
mol
%
TDCA
have
higher
tensile
modulus
than
poly(butylene
adipate-co-terephthalate)
(PBAT)
possess
excellent
gas
barrier
properties,
outperforming
PBAT
by
200
times.
Dynamic
mechanical
analysis
links
superior
properties
to
reduced
free
volumes.
PPAThs
degrade
faster
PPSThs,
hydrolytic
differences
explained
Fukui
function
DFT
calculations.
Molecular
dynamics
simulations
clarified
degradation
mechanism
catalyzed
Candida
antarctica
lipase
B,
showing
residues
entrance
interact
PPXTh50
residues,
hindering
carbonyl
carbon
from
approaching
catalytic
nucleophile,
while
flexible
PPXTh40
more
easily
achieves
an
ideal
Bürgi–Dunitz
angle
nucleophilic
attack.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2023,
Volume and Issue:
11(37), P. 13688 - 13708
Published: Sept. 6, 2023
Since
the
remarkable
discovery
of
polyurethanes
(PU),
significant
progress
has
been
made
in
their
synthesis
and
processing,
expanding
applications
across
various
fields.
However,
inclusion
isocyanates
utilization
toxic
catalysts
for
PU
impose
a
challenge
biomedical
application.
In
this
study,
we
present
novel
approach:
an
isocyanate
catalyst-free
melt
polycondensation
process
preparation
series
poly(ester
urethanes).
To
synthesize
urethanes),
have
employed
combination
poly(ethylene
terephthalate)
(PET)
waste-derived
monomers
diverse
range
renewable
resources,
including
oleic
acid,
ethylene
carbonate,
citric
sebacic
mannitol.
The
urethanes)
was
confirmed
by
FTIR
spectroscopy
1H
NMR
spectroscopy,
while
physicochemical
properties
were
investigated
using
XRD,
TGA,
DSC,
UTM.
thermal
characteristics,
mechanical
properties,
biodegradation
behavior
can
be
adjusted
simply
changing
PET
diols.
characteristics
synthesized
closely
resemble
those
soft
tissues
found
human
body,
articular
cartilage,
cervical
spinal
components,
ligaments,
aorta,
collagenous
bone,
indicating
its
promising
potential
tissue
engineering
applications.
addition
to
that,
exhibited
excellent
shape
memory
behavior,
along
with
good
recovery
response
at
ambient
temperature.
Furthermore,
demonstrated
certain
levels
antimicrobial
activity,
exceptional
vitro
cytocompatibility,
cell
proliferation
against
mouse
fibroblast
cells
(NIH/3T3)
as
alamar
blue
live/dead
assays
suggesting
