Chemistry of Materials,
Год журнала:
2023,
Номер
35(24), С. 10295 - 10315
Опубликована: Дек. 4, 2023
This
review
introduces
a
critical
comparison
on
the
chemistry
of
two-dimensional
(2D)
solids
based
clay
silicates
and
MXenes,
in
relation
to
their
common
properties
especially
ability
produce
organic
derivatives.
Hybrid
materials
derived
from
2D
are
extraordinarily
vast
rich
mainly
chemical
processes
intercalation
delamination
reactions
that
facilitate
interactions
between
inorganic
layers
compounds
through
various
physicochemical
mechanisms.
Clay
phyllosilicates
MXene
carbides/carbonitrides
nowadays
most
representative
capable
generating
wide
variety
hybrid
organic–inorganic
interactions.
Clay-organic
have
been
known
for
several
decades,
while
MXenes
an
emerging
group
with
similar
but
also
electronic
conductivity.
Here
is
introduced
characteristics
as
composition,
reactivity,
properties,
which
basis
preparation
large
number
materials,
nanocomposites,
functional
bionanocomposites,
molecular
assembly
carbon
nanoparticles,
polymers,
biopolymers.
The
resulting
attract
outstanding
interest
due
potential
applications
diverse
fields
such
electromagnetic
interference,
gas
separation,
electrode
sensing
devices,
supercapacitors,
photothermal
conductive
biomedical
uses,
among
others.
Macromolecular Rapid Communications,
Год журнала:
2024,
Номер
45(14)
Опубликована: Апрель 19, 2024
Abstract
Various
acoustic
materials
are
developed
to
resolve
noise
pollution
problem
in
many
industries.
Especially,
with
porous
structure
broadly
used
absorb
sound
energy
civil
construction
and
transportation
area.
Polyurethane
(PU)
possess
excellent
damping
properties,
good
toughness,
well‐developed
pore
structures,
which
have
a
broad
application
prospect
absorption
field.
This
work
aims
summarize
the
recent
progress
of
fabrication
for
PU
application.
The
mechanisms
introduced.
Different
kinds
typical
covered
highlighted,
include
foam,
modified
materials,
aerogel,
templated
PU,
special
materials.
Finally,
development
direction
existing
problems
material
briefly
prospected.
It
can
be
expected
that
high
coefficient
obtained
by
using
some
facile
methods.
design
accurate
regulation
structures
or
multilayer
is
favorably
recommended
fulfill
demand
industrial
commercial
applications
future
work.
Aerogels
are
fascinating
solid
materials
known
for
their
highly
porous
nanostructure
and
exceptional
physical,
chemical,
mechanical
properties.
They
show
great
promise
in
various
technological
biomedical
applications,
including
tissue
engineering,
bone
cartilage
substitution.
To
evaluate
the
bioactivity
of
substitutes,
researchers
typically
conduct
vitro
tests
using
simulated
body
fluids
specific
cell
lines,
while
vivo
testing
involves
study
different
animal
species.
In
this
context,
our
primary
focus
is
to
investigate
applications
types
aerogels,
considering
materials,
microstructure,
porosity
field
engineering.
From
clinically
approved
experimental
we
present
a
comprehensive
list
summary
aerogel
building
blocks
biological
activities.
Additionally,
explore
how
complexity
scaffolds
influences
performance,
ranging
from
simple
single-component
or
hybrid
aerogels
more
intricate
organized
structures.
We
also
discuss
commonly
used
formulation
drying
methods
chemistry,
molding,
freeze
casting,
supercritical
foaming,
drying,
subcritical,
techniques.
These
techniques
play
crucial
role
shaping
applications.
Alongside
progress
made,
acknowledge
challenges
ahead
assess
near
far
future
aerogel-based
hard
engineering
as
well
potential
connection
with
emerging
healing
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Март 21, 2024
Abstract
Polycaprolactone
(PCL)
has
the
advantages
of
good
biocompatibility,
appropriate
biodegradability,
non-toxicity,
flexibility,
and
processability.
As
a
result,
PCL-based
foams
can
successfully
work
in
bone
tissue
engineering,
medical
patches,
drug
delivery,
reinforcing
materials,
other
applications.
A
promising
technology
for
producing
PCL
foam
products
is
supercritical
CO
2
(ScCO
)
foaming
technology,
which
avoids
using
organic
solvents,
green,
low
agent
costs.
However,
due
to
limitations
ScCO
it
no
longer
possible
use
this
alone
meet
current
production
requirements.
Therefore,
must
combine
with
technologies
develop
better
performance
matching
This
paper
systematically
reviews
technological
development
foams.
The
molding
process
conventional
preparation
are
discussed
comprehensively,
including
process,
advantages,
disadvantages,
challenges
faced,
etc.
Six
combined
applications
presented.
Finally,
future
remaining
research
by
analyzed.
Polymers,
Год журнала:
2024,
Номер
16(1), С. 159 - 159
Опубликована: Янв. 4, 2024
The
search
for
alternatives
to
petroleum-based
thermoplastic
polyamide
elastomers
(TPAEs)
has
recently
drawn
great
interest.
In
this
study,
a
bio-massed
TPAE,
PA12,36,
was
synthesized
using
1,12-dodecanediamine
(DDA)
and
fatty
dimer
acid
(FDA,
PripolTM1009)
precursors
via
catalyst
solvent-free
melt
polycondensation.
molecular
structure
weight
of
the
PA12,36
were
characterized
by
1H
NMR,
FTIR,
GPC.
displayed
low
melting
temperature
85.8
°C,
an
initial
degradation
425
glass-transition
30.4
whereas
it
sustained
satisfactory
tensile
strength
(10.0
MPa)
superior
strain
at
break
(1378%).
Furthermore,
foamed
supercritical
CO2,
cell
size,
density,
porosity
determined.
entangled
long-chained
FDA
component
generated
physically
crosslinked
network,
which
promoted
viscosity
against
elongations
foam
growth
increased
foamability
significantly.
As
result,
uniform
structured
cellular
foams
with
diameter
15–24
µm
high
density
(1011
cells/cm3–1012
cells/cm3)
successfully
achieved.
foaming
window
widened
from
76
81
expansion
ratio
4.8
9.6.
Additionally,
presented
better
creep
shape
recovery
percentage
(92–97.9%)
sturdier
dimensional
stability.
This
bio-based
is
promising
candidate
replace
elastomer
engineering
applications,
particularly
shoe
soles.
Materials,
Год журнала:
2023,
Номер
16(5), С. 1934 - 1934
Опубликована: Фев. 26, 2023
During
recent
decades,
rubber
foams
have
found
their
way
into
several
areas
of
the
modern
world
because
these
materials
interesting
properties
such
as
high
flexibility,
elasticity,
deformability
(especially
at
low
temperature),
resistance
to
abrasion
and
energy
absorption
(damping
properties).
Therefore,
they
are
widely
used
in
automobiles,
aeronautics,
packaging,
medicine,
construction,
etc.
In
general,
mechanical,
physical
thermal
related
foam's
structural
features,
including
porosity,
cell
size,
shape
density.
To
control
morphological
properties,
parameters
formulation
processing
conditions
important,
foaming
agents,
matrix,
nanofillers,
temperature
pressure.
this
review,
morphological,
mechanical
discussed
compared
based
on
studies
present
a
basic
overview
depending
final
application.
Openings
for
future
developments
also
presented.
Polymers,
Год журнала:
2024,
Номер
16(2), С. 298 - 298
Опубликована: Янв. 22, 2024
This
work
examines,
first,
the
non-equilibrium
character
of
glassy
state
polymer
systems
and
its
significance
in
development
novel
materials
for
important
technological
applications.
Subsequently,
it
summarizes
essentials
generalized
lattice
fluid
approach
description
this
highly
complex
behavior
with
an
approximate
simple,
yet
analytically
powerful
formalism.
The
working
equations
are
derived
a
straightforward
consistent
manner
by
clearly
defining
universal
specific
variables
needed
to
describe
discussed
properties.
role
non-random
distribution
molecular
species
free
volume
system
is
also
examined,
as
strong
interactions,
such
hydrogen-bonding
networks.
reports
examples
applications
variety
representative
systems,
including
glass
densification,
retrograde
vitrification,
increase
glass-transition
temperature
hydrogen-bonded
mixtures,
hysteresis
phenomena
sorption–desorption
from
matrices.
