Opportunities in Bottlebrush Block Copolymers for Advanced Materials
ACS Nano,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 30, 2024
Bottlebrush
block
copolymers
(BBCPs)
are
a
unique
class
of
materials
that
contain
backbone
with
densely
grafted
and
chemically
distinct
polymeric
side
chains.
The
nonlinear
architecture
BBCPs
provides
numerous
degrees
freedom
in
their
preparation,
including
control
over
key
parameters
such
as
grafting
density,
chain
length,
arrangement,
overall
molecular
weight.
This
uniquely
branched
structure
several
important
distinctions
from
linear
counterparts,
sterically
induced
conformations,
rapid
large
self-assembled
nanostructures,
reduced
or
eliminated
entanglement
effects
(assuming
sufficient
density
the
weight
chains
is
below
respective
weight).
These
allow
access
to
domain
sizes,
very
assembly,
ability
preferentially
add
additives
and/or
precursors
one
domain,
thereby
enabling
efficient
fabrication
wide
range
advanced
devices.
have
been
utilized
create
finely
controlled
well-ordered
nanostructures
for
use
applications,
photonic
crystals,
drug
delivery
systems,
energy
conversion,
storage
devices,
components
surface
coatings.
To
further
deploy
templates
formation
precise
having
thorough
understanding
synthesis,
self-assembly,
templating
necessary.
explore
understand
self-assembly
subsequent
applications
BBCPs,
this
review
emphasizes
physics
(including
architectural,
rheological,
thermodynamic
considerations)
structure-property
relationships
between
resulting
nanostructures.
Lastly,
we
provide
an
overview
current
research
trends
using
storage,
photonic,
3D
printing,
applications.
We
aim
researchers
fundamentals
BBCP
nanostructured
continue
development
materials.
Язык: Английский
One-step Synthesis of Fully Biobased Two-Sided Tapered ABA-type Thermoplastic Elastomers
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(26), С. 9922 - 9933
Опубликована: Июнь 18, 2024
The
synthesis
of
a
fully
biobased
thermoplastic
elastomer
(TPE)
is
presented
as
an
alternative
to
classical
styrene/isoprene-derived
TPEs.
Limitations
systems,
e.g.,
the
microstructure
dienes
or
elaborate
multistep
addition
pathways
can
be
overcome
by
combination
bifunctional
initiation
in
scarcely
used,
moderately
polar
solvent
methyl
tert-butyl
ether
(MTBE)
and
using
monomers
β-farnesene
nopadiene.
derived
from
renewable
sugar
cane
pine
tree
feedstocks.
Excellent
control
carbanionic
copolymerization
confirmed
situ
NMR
kinetics.
study
reveals
that
two-sided
tapered
ABA
triblock
copolymers
are
accessible
one-step
approach,
capitalizing
on
difunctional
initiator
MTBE.
material
properties
tuned
broad
range─highly
elastic
materials
with
elongation
exceeding
1300%
well
tough
Young's
modulus
500
MPa
were
obtained.
Small-angle
Χ-ray
scattering,
temperature-modulated
differential
scanning
calorimetry,
rheology,
dielectric
spectroscopy
employed
relate
phase
state.
They
revealed
local
segregation
accompanied
respective
glass
temperatures,
albeit
absence
long-range
order.
Язык: Английский
Bottlebrush Pastes as a Platform for Solvent-Free, Injectable, and Shape-Persistent Materials with Tissue-Mimetic Viscoelasticity
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 22, 2025
Architecturally
hindered
crystallization
of
bottlebrush
graft
copolymers
offers
a
reaction-
and
solvent-free
pathway
for
creating
injectable
elastomers
with
tissue-mimetic
softness.
Currently,
materials
involve
solvents
chemical
reactions,
leading
to
uncontrolled
swelling,
leaching
unreacted
moieties,
side
reactions
tissue.
To
address
this
issue,
poly(ethylene
glycol)
(PEG)
amorphous
block
crystallizable
poly(lactic
acid)
(PLA)
grafted
chains
(A-g-B)
were
synthesized,
controlled
length
arranged
along
the
backbone
at
spacing.
The
densely
PEG
brush
is
leveraged
architecturally
control
both
rate
degree
PLA
grafts,
offering
tunability
mechanical
properties
as
function
architecture
time
in
single-component
system
covering
broad
range
aggregation
states
comprising
fluid-,
paste-,
elastomer-like
behaviors
modulus
ranging
from
1
50
kPa.
PLA-g-PEG
pastes
are
particularly
interesting,
they
combine
injectability
time-controlled
formation
shape-persistent
constant
temperature.
This
molecular
paste
platform
may
advance
reconstructive
surgery,
drug
depots,
tissue
engineering.
Язык: Английский
Bottlebrush Polymers: From Synthesis to Properties and Applications
Macromolecular Rapid Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 4, 2025
Abstract
Bottlebrush
polymers
(BBPs)
have
emerged
as
a
special
class
of
macromolecules
composed
linear
backbone
the
main
chain
with
densely
grafted
polymeric
side
chains.
BBPs
present
many
unique
properties,
such
low
entanglement,
high
extension
backbone,
and
extremely
plateau
shear
moduli
relative
to
their
analogs
due
distinct
conformational
topological
characteristics.
This
review
summarizes
recent
significant
advances
BBPs,
from
synthetic
methods
versatile
properties
applications
in
areas
super‐soft
elastomers,
photonic
crystals,
self‐assembly,
friction,
biomimetic
tissues,
bio‐interfacial
interactions
enhance
cell
penetration
anti‐fouling
performance,
drug
delivery,
other
emerging
(polymer
electrolyte,
catalyst
support,
covalent
adaptable
networks).
Meanwhile,
molecular
dynamic
simulations
are
discussed
tool
disclose
relationship
between
structures
properties.
will
comprehensively
summarize
studies
on
point
out
direction
give
prediction
application
trend,
comment
future
BBPs.
Язык: Английский