Shortening the Saturation Time of PBAT Sheet Foaming via the Pre-Introducing of Microporous Structures
Materials,
Год журнала:
2025,
Номер
18(5), С. 1044 - 1044
Опубликована: Фев. 26, 2025
Poly
(butylene
adipate-co-terephthalate)
(PBAT)
foam
sheets
prepared
by
foaming
supercritical
fluids
are
characterized
high
resilience,
homogeneous
cellular
structure,
and
well-defined
biodegradability.
However,
the
inert
chemical
structure
rigid
hard
segments
restrict
diffusion
of
CO2
within
PBAT
matrix,
resulting
in
extremely
long
gas
saturation
times
as
9
h
at
a
thickness
12
mm.
In
this
study,
microporous
structures
were
pre-introduced
into
matrix
to
provide
fast
pathway
during
process.
After
2
saturation,
with
expansion
ratio
10
13.8
prepared.
The
interaction
was
systematically
investigated,
sorption
process
evaluated
kinetically
thermodynamically
using
Fickian
theory.
solubility
rate
pretreated
different
sizes
densities
effects
pretreatment
strategies
on
behavior
cell
discussed.
introduction
not
only
reduces
time
but
also
enhances
solubility,
enabling
successful
preparation
soft
foams
ratios
resilience.
undergoing
treatment,
μm
density
0.45
g/cm3
demonstrated
improved
mechanical
properties:
their
hardness
decreased
35
C
while
resilience
increased
58%,
reflecting
enhanced
elastic
recovery
capabilities.
method,
which
increases
sheets,
offers
straightforward
approach
that
provides
valuable
insights
achieving
rapid
efficient
thick
industrial
applications.
Язык: Английский
A novel bionic dual-layer decorative membrane approach for suppressing interfacial defects in combined in-mold decoration and microcellular injection molding
Colloids and Surfaces A Physicochemical and Engineering Aspects,
Год журнала:
2025,
Номер
unknown, С. 136889 - 136889
Опубликована: Апрель 1, 2025
Язык: Английский
Elastomer foams with switchable folded cellular structure for EMI shielding, comprehensive sealing, and cushioning protection
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 161088 - 161088
Опубликована: Март 1, 2025
Язык: Английский
Highly Heat-Resistant and Compression Strength Strong Co-cross-linked Acetylene-Based End-Capped Polyimide Foams Using a Norbornene-Based Blowing Agent
Xianzhe Sheng,
Shuhuan Yun,
Xing Miao
и другие.
Industrial & Engineering Chemistry Research,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 18, 2025
Язык: Английский
Caterpillar-inspired electromagnetic dual-function cuniculi composites for efficient broad bandwidth microwave absorption
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 163559 - 163559
Опубликована: Май 1, 2025
Язык: Английский
Wrinkled thermoplastic polyamide elastomer foams with enhanced mechanical properties fabricated by dynamic supercritical CO2 foaming
Polymer Engineering and Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 31, 2024
Abstract
Wrinkled
foams
(WF),
distinguished
by
their
numerous
cell
wall
wrinkles,
exhibit
superior
impact
resistance
compared
to
conventional
(CF),
making
them
ideal
for
applications
such
as
sports
protection
and
packaging.
Despite
potential,
the
mechanisms
behind
wrinkle
formation
remain
underexplored,
limiting
production
process
optimization.
In
this
study,
we
use
a
custom
supercritical
foaming
reactor
with
sapphire
glass
viewing
window
investigate
differences
between
wrinkled
thermoplastic
polyamide
elastomer
foams.
Our
findings
suggest
that
“excessive
expansion‐shrinkage”
is
crucial
development.
Molecular
dynamics
simulations
reveal
molecular
chains
align
flow
field
of
dynamic
CO
2
,
which
increases
intramolecular
stress.
The
release
stress
triggers
formation,
driven
thermodynamic
instability.
Furthermore,
comparisons
compression
performance
WF
CF
show
structures
alter
deformation
behavior
under
force.
wrinkles
facilitate
increased
collision,
squeezing,
friction
walls,
thus
dissipating
energy
heat
creating
“micro‐air
units”
enhance
cushioning
capability.
These
distinctive
characteristics
make
promising
material
high‐performance
in
absorption,
Highlights
are
fabricated
scCO
foaming.
Chain
stretching
shrinkage
verified
MD
simulation.
Excessive
expansion‐shrinkage
causes
structure.
structure
greatly
absorption
ability.
Язык: Английский