Polymers,
Journal Year:
2020,
Volume and Issue:
12(6), P. 1234 - 1234
Published: May 29, 2020
Sustainable
polymers
are
emerging
fast
and
have
received
much
more
attention
in
recent
years
compared
to
petro-sourced
polymers.
However,
they
inherently
low-quality
properties,
such
as
poor
mechanical
inadequate
performance,
high
flammability.
In
general,
two
methods
been
considered
tackle
drawbacks:
(i)
reinforcement
of
sustainable
with
additives;
(ii)
modification
chemical
structure
by
architectural
manipulation
so
modify
for
advanced
applications.
Development
management
bio-based
polyurethanes
flame-retardant
properties
at
the
core
years.
Bio-based
currently
prepared
from
renewable,
sources
vegetable
oils.
They
used
a
wide
range
applications
including
coatings
foams.
highly
flammable,
their
further
development
is
dependent
on
flame
retardancy.
The
aim
present
review
investigate
advances
polyurethanes.
Chemical
structures
studied
explained
point
view
Moreover,
various
strategies
improving
retardancy
well
reactive
additive
solutions
discussed.
Advanced Materials,
Journal Year:
2020,
Volume and Issue:
33(6)
Published: Aug. 23, 2020
Abstract
Stretchable
electronics,
which
can
retain
their
functions
under
stretching,
have
attracted
great
interest
in
recent
decades.
Elastic
substrates,
bear
the
applied
strain
and
regulate
distribution
circuits,
are
indispensable
components
stretchable
electronics.
Moreover,
self‐healing
property
of
substrate
is
a
premise
to
endow
electronics
with
same
characteristics,
so
device
may
recover
from
failure
resulting
large
frequent
deformations.
Therefore,
properties
elastic
crucial
overall
performance
devices.
Poly(dimethylsiloxane)
(PDMS)
widely
used
as
material
for
not
only
because
its
advantages,
include
stable
chemical
properties,
good
thermal
stability,
transparency,
biological
compatibility,
but
also
capability
attaining
designer
functionalities
via
surface
modification
bulk
tailoring.
Herein,
strategies
fabricating
on
PDMS
substrates
summarized,
influence
physical
PDMS,
including
status,
modulus,
geometric
structures,
discussed.
Finally,
challenges
future
opportunities
based
considered.
Advanced Functional Materials,
Journal Year:
2020,
Volume and Issue:
31(4)
Published: Oct. 9, 2020
Abstract
Developing
an
autonomous
room
temperature
self‐healing
supramolecular
polyurethane
(PU)
with
toughness
and
stiffness
remains
a
great
challenge.
Herein,
novel
concept
that
utilizes
T‐shaped
chain
extender
double
amide
hydrogen
bonds
in
side
to
extend
PU
prepolymers
construct
highly
stiff
tough
integrated
functions
is
reported.
Mobile
side‐chain
H‐bonds
afford
large
flexibility
modulate
the
of
PUs
ranging
from
elastomer
(105.87
MPa
Young's
modulus,
27
kJ
m
−2
tearing
energy),
solvent‐free
hot‐melt
adhesive,
coating.
The
dynamic
multiple
self‐healability
at
(25
°
C).
Due
rapid
reconstruction
bonds,
this
adhesive
demonstrates
high
adhesion
strength,
fast
curing,
reusability,
long‐term
adhesion,
excellent
low‐temperature
resistance.
Intriguingly,
emits
intrinsic
blue
fluorescence
presumably
owing
aggregation‐induced
emission
tertiary
amine
domains
induced
by
H‐bonds.
explored
as
counterfeit
ink
coated
on
predesigned
pattern,
which
visible‐light
invisible
UV‐light
visible.
This
work
represents
universal
facile
approach
fabricate
supertough
tailorable
extension
H‐bonding
extenders.
Materials Horizons,
Journal Year:
2021,
Volume and Issue:
8(8), P. 2238 - 2250
Published: Jan. 1, 2021
Molecular
engineering
of
a
microphase
separated
structure
to
convert
weak,
soft
and
self-healing
polymer
strong,
tough,
resilient,
healable
poly(urethane–urea)
elastomer,
which
is
in
great
demand
for
transparent
protection
engineering.
Environmental Science & Technology,
Journal Year:
2022,
Volume and Issue:
56(16), P. 11323 - 11334
Published: July 28, 2022
Understanding
the
environmental
fate
of
microplastics
is
essential
for
their
risk
assessment.
It
to
differentiate
size
classes
and
degradation
states.
Still,
insights
into
fragmentation
mechanisms
primary
secondary
micro-
nanoplastic
fragments
other
products
are
limited.
Here,
we
present
an
adapted
NanoRelease
protocol
a
UV-dose-dependent
assessment
size-selective
quantification
release
down
10
nm
demonstrate
its
applicability
polyamide
thermoplastic
polyurethanes.
The
tested
cryo-milled
polymers
do
not
originate
from
actual
consumer
but
handled
in
industry
therefore
representative
polydisperse
occurring
environment.
suitable
various
types
microplastic
polymers,
measured
rates
can
serve
parameterize
mechanistic
models.
We
also
found
that
matched
same
ranking
weathering
stability
as
corresponding
macroplastics
dissolved
organics
constitute
major
rate
mass
loss.
results
imply
previously
formed
further
degrade
water-soluble
with
measurable
enable
modeling
approaches
all
compartments
accessible
UV
light.
