Structural Concrete,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 15, 2024
Abstract
Increasing
demand
for
energy
globally,
with
the
building
sector
being
a
significant
contributor
to
consumption,
is
major
issue.
To
address
this,
efforts
are
made
make
buildings
more
efficient,
including
lowering
heating,
ventilation,
and
air
conditioning
decrease
demand.
Phase
change
material
(PCM)
functions
as
latent
heat
storage
that
absorbs
while
transforming
its
phase
from
solid
liquid
then
releases
when
it
transforms
state.
Integrating
PCM
into
materials
can
considerably
enhance
their
density.
In
this
study,
potential
of
using
fly
ash
cenosphere—capric
acid
(CeCA)
composite
in
concrete
evaluated.
The
mechanical,
durability
thermal
properties
CeCA
blended
were
investigated.
Furthermore,
CeCA‐concrete
enhanced
auxiliary
cementitious
substance,
namely
ground
granulated
blast
furnace
slag
(GGBS).
optimal
proportion
was
determined
ensure
balance
compressive
strength
conductivity.
results
indicated
lowered
an
increase
percentage
CeCA.
conductivity
specimen
by
33.14%
at
25%
incorporation
CeCA,
resulting
improved
performance.
GGBS
has
mechanical
performance
CeCA‐Concrete.
found
be
+40%
GGBS,
which
had
greater
efficiency
than
control
similar
findings
validated
field
emission
scanning
electron
microscopy
analysis
specimen.
Journal of Materials Research and Technology,
Год журнала:
2024,
Номер
30, С. 2446 - 2457
Опубликована: Апрель 3, 2024
The
challenge
of
precisely
regulating
temperature
during
the
photo-thermal
bone
promotion
remains
unresolved.
Phase
change
material
(PCM),
capable
undergoing
a
phase
transition
at
specific
temperature,
offers
solution
by
photothermal
regulation
through
storage
and
release
heat.
This
study
incorporated
biocompatible
polyethylene
glycol
(PEG)
with
points
as
PCM.
A
hydrogel
scaffold
was
then
synthesized
semi-crosslinking
PEG
calcium-ion-chelated
sodium
alginate
(SA)
acting
structural
framework.
Additionally,
newly
developed
graphene
oxide
(GO)
modified
composite
scaffolds
(GO-PHSC),
featuring
0.5
wt%
GO,
not
only
demonstrated
outstanding
conversion
efficiency
an
optimal
(42.2
°C)
but
also
exhibited
desirable
values
for
latent
enthalpy
(100
J/g)
heat
recovered
(LHR)
(93.3%).
Moreover,
form-stability
test
PCM
scaffolds'
exceptional
resistance
to
leakage
maintenance
shape
stability
even
elevated
temperatures
(70
°C).
Beyond
achieving
passive
control
in
therapy,
experimental
findings
highlighted
that
hydrogel,
incorporating
calcium
ions
met
various
requirements
such
physicochemical
properties,
microstructure,
mechanics,
mineralization,
biocompatibility,
cell
affinity.
These
collective
attributes
suggest
GO-PHSC
emerges
promising
candidate
temperature-controlled
therapy
regeneration.
Nanomaterials,
Год журнала:
2024,
Номер
14(13), С. 1126 - 1126
Опубликована: Июнь 29, 2024
Phase
change
materials
(PCMs)
are
that
exhibit
thermal
response
characteristics,
allowing
them
to
be
utilized
in
the
biological
field
for
precise
and
controllable
temperature
regulation.
Due
considerations
of
biosafety
spatial
limitations
within
human
tissue,
amount
PCMs
used
medical
applications
is
relatively
small.
Therefore,
researchers
often
augment
with
various
enhance
their
performance
increase
practical
value.
The
dispersion
nanoparticles
modify
thermophysical
properties
has
emerged
as
a
mature
concept.
This
paper
aims
elucidate
role
nanomaterials
addressing
deficiencies
enhancing
PCMs.
Specifically,
it
discusses
methods
stabilization
mechanisms
PCMs,
well
effects
on
such
conductivity,
latent
heat,
specific
heat
capacity.
Furthermore,
explores
how
nano-additives
contribute
improved
conductivity
underlying
enhanced
heat.
Additionally,
potential
biomedical
fields
proposed.
Finally,
this
provides
comprehensive
analysis
offers
suggestions
future
research
maximize
utilization
applications.
