Journal of Sustainable Cement-Based Materials,
Год журнала:
2024,
Номер
unknown, С. 1 - 19
Опубликована: Ноя. 18, 2024
This
study
investigates
the
mechanical
properties
of
polypropylene
fiber-reinforced
foamed
concrete
(PPFRFC)
under
high
strain
rates
and
large
compressive
deformation,
focusing
on
effects
varying
fiber
contents
lengths.
Results
show
both
peak
plateau
stress
increase
with
content,
reaching
a
maximum
at
1.5
wt.%
before
decreasing.
Similarly,
increased
length
enhances
stresses,
but
beyond
9
14
mm,
they
decline.
The
dynamic
factor
is
sensitive
to
content
length,
lowest
values
observed
mm
or
length.
Failure
mode
analysis
shows
that
as
increases,
damage
extent
decreases,
fewer
fragments.
At
2.0
wt.%,
specimens
largely
retain
their
overall
contour
after
impact,
while
has
smaller
effect
failure
mode.
Polymers,
Год журнала:
2024,
Номер
16(9), С. 1286 - 1286
Опубликована: Май 3, 2024
The
last
few
decades
have
witnessed
significant
advances
in
the
development
of
polymeric-based
foam
materials.
These
materials
find
several
practical
applications
our
daily
lives
due
to
their
characteristic
properties
such
as
low
density,
thermal
insulation,
and
porosity,
which
are
important
packaging,
building
construction,
biomedical
applications,
respectively.
first
foams
with
used
polymeric
petrochemical
origin.
However,
growing
environmental
concerns,
considerable
efforts
been
made
replace
some
these
biodegradable
polymers.
Foam
processing
has
evolved
greatly
recent
years
improvements
existing
techniques,
use
supercritical
fluids
extrusion
foaming
injection
moulding,
well
advent
or
adaptation
techniques
produce
foams,
case
combination
between
additive
manufacturing
technology.
CO
Journal of Applied Polymer Science,
Год журнала:
2024,
Номер
141(19)
Опубликована: Фев. 21, 2024
Abstract
The
massive
arbitrarily
discarded
waste
of
polyethylene
terephthalate
(PET)
bottles
become
a
major
environmental
pollution
source
for
soils
and
oceans.
Using
these
products
to
acquire
purified
water
has
great
significance.
We
developed
novel
strategy
inducing
crystallization
coupled
with
solvent
exchanging
obtain
oriented
PET/carbon
nanotubes
(CNT)
foams
from
PET
fabricate
solar
interfacial
vapor
generators
(SIVGs).
obtained
PET/CNT
had
low
densities
0.18
g/cm
3
high
specific
strength
compressive
stress
1.8
MPa.
generated
excellent
capillary
action
that
the
delivering
rate
reached
93.60
kg/m
2
h.
In
addition,
demonstrated
promising
thermal
concentration
effect
its
surface
temperature
132.8°C.
It
could
evaporate
up
0.82
h
under
illumination
1
sun.
Meanwhile,
CNT
clusters
dispersion
also
exhibited
electrical
resistance
3.57
×
10
Ω
m
percolation
threshold
0.5
wt.%
CNT.
This
work
provides
manufacturing
SIVG.
key
aspect
this
is
significant
increase
in
conductivity
SIVG
compared
other
polymer‐based
SIVGs,
highlighting
novelty
importance.
Macromolecular Chemistry and Physics,
Год журнала:
2024,
Номер
225(20)
Опубликована: Авг. 13, 2024
Abstract
In
this
study,
polylactic
acid
(PLA)
is
compounded
with
cottonseed
protein
concentrate
(CPC)
by
melt
blending
under
the
compatibilization
of
maleic
anhydride
(MA),
and
then
hot‐pressed
to
prepare
PLA/CPC
composite
bioplastics.
The
attenuated
total
reflection
Fourier
transform
infrared
(ATR‐FTIR)
spectroscopy
showed
that
high
temperature
compatibilizer
induced
secondary
structure
transition.
CPC
can
be
used
as
a
heterogeneous
PLA
nucleating
agent,
effectively
accelerating
crystallization,
which
characterized
polarization
optical
microscopy
(POM),
synchrotron
radiation
wide‐angle
X‐ray
scattering
(WAXS)
differential
scanning
calorimetry
(DSC).
highest
crystallinity
PLA/CPC10
8.9%
higher
than
neat
PLA.
unfolding
likely
promote
an
orderly
arrangement
crystals,
showing
strong
binding
forces
between
them.
Moreover,
CPC/PLA
interfacial
compatibility
improved
addition
small
amount
anhydride.
increased
contribute
mechanical
properties,
water
resistance,
thermal
stability
Environmentally
friendly
plastic
handicrafts
(e.g.,
commemorative
emblems,
flower
pots,
ornaments,
etc.)
fabricated
using
these
biocomposites
for
future
value‐added
applications.
