Superior Ductile and Barrier PLA/PGA Films by an In Situ Constructing Transversely Isotropic Network and Well-Ordered Crystalline Nanolayers
Bo Liu,
No information about this author
Pengwu Xu,
No information about this author
Deyu Niu
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et al.
Macromolecules,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 9, 2025
Simultaneously
achieving
excellent
toughness,
transparency,
and
gas
barrier
properties
is
still
a
challenge
for
poly(lactic
acid)
(PLA)
films.
In
this
work,
we
address
an
effective
scalable
strategy
based
on
biaxial
stretching
to
make
superior
ductile,
transparent,
high-barrier
PLA
films
by
incorporating
polyglycolic
acid
(PGA)
constructing
transversely
isotropic
structure
in
the
matrix
with
numerous
nanocrystals
nanolayer
PGA
phase.
The
endowed
PLA/PGA
robust
chain
entanglement
network,
which
prevents
formation
of
densely
distributed
cohesional
physical
aging
PLA,
allowing
molecular
chains
move
sufficiently
exhibit
toughness.
Consequently,
tensile
strength
film
increased
from
67
157
MPa
while
maintaining
high
elongation
at
break
(>100%),
transparency
(>85%),
durability,
demonstrating
comprehensive
mechanical
properties.
Importantly,
situ
constructed
phase
greatly
prolongs
diffusion
path
molecules
films,
consequently
oxygen
permeability
coefficient
(PO2)
decreased
almost
two
orders
magnitude,
i.e.,
1.66
×
10–14
7.10
10–16
cm3·cm/cm2·s·Pa,
compared
that
neat
three
magnitude
lower
than
polyethylene
film.
Therefore,
work
contributes
deeper
understanding
structure–property
relationship
biaxially
oriented
PLA-based
may
enable
their
application
green
packaging
field.
Language: Английский
Flexible and Robust Piezoelectric Chitosan Films with Enhanced Bioactivity
Biomacromolecules,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 13, 2025
Chitosan
(CHT)
is
a
known
piezoelectric
biomacromolecule;
however,
its
usage
limited
due
to
rapid
degradation
in
an
aqueous
system.
Herein,
we
prepared
CHT
film
via
solvent
casting
method
and
cross-linked
alkaline
solution.
Sodium
hydroxide
facilitated
deprotonation,
leading
increased
intramolecular
hydrogen
bonding
mechanical
properties.
The
remained
intact
for
30
days
environments.
A
systematic
study
revealed
gradual
increase
the
output
voltage
from
0.9
1.8
V
under
external
force
(1-16
N).
In
addition,
showed
remarkable
antibacterial
anti-inflammatory
activities
ultrasound
stimulation
inhibition
of
inflammatory
cytokines.
films
also
displayed
enhanced
cellular
proliferation
∼5-fold
faster
migration
NIH3T3
cells
US
stimulation.
Overall,
this
work
presents
robust,
biocompatible,
wearable
device
that
can
transform
biomechanical
energy
into
electrical
pulses
modulation
cell
fate
processes
other
bioactivities.
Language: Английский
Biodegradable Piezoelectric Micro‐ and Nanomaterials for Regenerative Medicine, Targeted Therapy, and Microrobotics
Small Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 28, 2025
Piezoelectric
micro‐
and
nanomaterials
can
generate
local
electrical
signals
when
subjected
to
mechanical
stress,
a
phenomenon
that
be
exploited
trigger
beneficial
effects
at
the
cell
tissue
level.
In
recent
years,
research
on
biodegradable
piezoelectric
material
has
gained
momentum,
as
these
materials
degrade
after
fulfilling
their
function.
Thus,
they
promise
considerably
impact
regenerative
medicine,
targeted
therapy,
microrobotics,
with
better
chances
match
regulatory
requirements
respect
nondegradable
counterparts.
This
review
offers
comprehensive
overview
of
advancements
in
nanomaterials,
focusing
mechanisms,
types,
methods
enhance
properties.
Current
characterization
techniques,
emphasizing
both
piezoelectricity
biodegradability
micro/nano
scale,
are
also
discussed.
Furthermore,
it
is
discussed
how
use
intelligent
platforms
for
medicine
responsive
drug
delivery
systems.
The
application
microrobotics
examined,
particularly
potential
minimally
invasive
procedures.
Finally,
challenges
future
directions
highlighted,
underscoring
importance
versatile
advancing
biomedical
technologies.
Language: Английский
Recent progress in 3D printed piezoelectric materials for biomedical applications
Materials Science and Engineering R Reports,
Journal Year:
2025,
Volume and Issue:
164, P. 100962 - 100962
Published: March 6, 2025
Language: Английский
Key factors affecting the piezoelectric response of poly-L-lactic acid electrospun fibers
Polymer,
Journal Year:
2025,
Volume and Issue:
unknown, P. 128286 - 128286
Published: March 1, 2025
Language: Английский
Piezoelectric poly-L-lactic acid for next-generation energy harvesting and biomedical applications
Menghan Xu,
No information about this author
Yongxian Wen,
No information about this author
Donghui Li
No information about this author
et al.
Chemical Engineering Journal,
Journal Year:
2025,
Volume and Issue:
unknown, P. 162536 - 162536
Published: April 1, 2025
Language: Английский
Tailorable Piezoelectric Chain Morphology in Biocompatible Poly-l-lactide Induced by Melt-Based 3D Printing
ACS Applied Polymer Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 6, 2025
Language: Английский
Applications of Piezoelectric Biomaterials in Dental Treatments: A Review of Recent Advancements and Future Prospects
Kaichen Zeng,
No information about this author
Yifan Lin,
No information about this author
Shi-Rong Liu
No information about this author
et al.
Materials Today Bio,
Journal Year:
2024,
Volume and Issue:
29, P. 101288 - 101288
Published: Oct. 4, 2024
Language: Английский
Emerging Piezoelectric Metamaterials for Biomedical Applications
Zishuo Yan,
No information about this author
Huy Quang Tran,
No information about this author
Dongxin Ma
No information about this author
et al.
Published: Nov. 21, 2024
Emerging
piezoelectric
metamaterials
hold
immense
promise
for
biomedical
applications
by
merging
the
intrinsic
electrical
properties
of
piezoelectricity
with
precise
architecture
metamaterials.
This
review
provides
a
comprehensive
overview
various
materials-
such
as
molecular
crystals,
ceramics,
and
polymers-known
their
exceptional
performance
biocompatibility.
We
explore
advanced
engineering
approaches,
including
design,
supramolecular
packing,
3D
assembly,
which
enable
customization
targeted
applications.
Particular
attention
is
given
to
pivotal
role
metamaterial
structuring
in
development
0D
spheres,
1D
fibers
tubes,
2D
films,
scaffolds.
Key
applications,
tissue
engineering,
drug
delivery,
wound
healing,
biosensing,
are
discussed
through
illustrative
examples.
Finally,
article
addresses
critical
challenges
future
directions,
aiming
drive
further
innovations
biomaterials
next-generation
healthcare
technologies.
Language: Английский