Materials Research Innovations,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 5
Published: Feb. 27, 2025
A
functional
initiator
monomer
containing
lipoic
acid
ester
both
with
degradable
disulphide
bond
and
peroxide
was
designed
synthesised.
Here,
the
precursors
are
tert-butyl
(isopropylbenzene)
hydroperoxide,
while
dichloromethane
(tetrahydrofuran)
used
as
a
solvent
4-dimethylaminopyridine
(DMAP)
N,
N'-dicyclohexylcarbodiimide
(DCC)
were
condensation
agents.
The
structure
purity
of
characterised
by
proton
nuclear
magnetic
resonance
(1H-NMR)
high-performance
liquid
chromatography
(HPLC).
prepared
is
high
over
90%.
precursor
material
low-cost
widely
available,
does
not
require
special
methods
to
purify
product,
which
means
it
can
be
directly
in
synthesis
vinyl
polymers.
Therefore,
provides
great
application
prospects
for
green
environmentally
friendly
materials.
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(41), P. 22728 - 22734
Published: Oct. 9, 2023
Here,
we
present
the
synthesis
and
characterization
of
statistical
block
copolymers
containing
α-lipoic
acid
(LA)
using
reversible
addition-fragmentation
chain-transfer
(RAFT)
polymerization.
LA,
a
readily
available
nutritional
supplement,
undergoes
efficient
radical
ring-opening
copolymerization
with
vinyl
monomers
in
controlled
manner
predictable
molecular
weights
low
molar-mass
dispersities.
Because
lipoic
diads
resulting
include
disulfide
bonds,
these
materials
efficiently
rapidly
degrade
when
exposed
to
mild
reducing
agents
such
as
tris(2-carboxyethyl)phosphine
(Mn
=
56
→
3.6
kg
mol-1).
This
scalable
versatile
polymerization
method
affords
facile
way
synthesize
degradable
polymers
architectures,
weights,
dispersities
from
acid,
commercially
renewable
monomer.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(9), P. 6217 - 6224
Published: Feb. 21, 2024
In
this
study,
we
present
an
efficient
approach
for
the
depolymerization
of
poly(methyl
methacrylate)
(PMMA)
copolymers
synthesized
via
conventional
radical
polymerization.
By
incorporating
low
mol
%
phthalimide
ester-containing
monomers
during
polymerization
process,
colorless
and
transparent
polymers
closely
resembling
unfunctionalized
PMMA
are
obtained,
which
can
achieve
>95%
reversion
to
methyl
methacrylate
(MMA).
Notably,
our
catalyst-free
bulk
method
exhibits
exceptional
efficiency,
even
high-molecular-weight
polymers,
including
ultrahigh-molecular-weight
(10
Green Chemistry,
Journal Year:
2024,
Volume and Issue:
26(5), P. 2384 - 2420
Published: Jan. 1, 2024
While
our
society
is
facing
the
challenge
of
accumulating
plastic
waste,
this
review
discusses
recent
advances
towards
polymer
circularity
with
an
emphasis
on
manipulations
monomer–polymer
equilibrium
to
create
chemically
recyclable
polymers.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(34)
Published: June 28, 2023
Abstract
Pressure‐sensitive
adhesives
(PSAs)
are
made
from
soft,
irreversibly
lightly
crosslinked
polymers.
Even
after
removal
surfaces,
they
retain
insoluble
networks
which
pose
problems
during
the
recycling
of
glass
and
cardboard.
Herein,
degradable
PSAs
presented
that
provide
required
performance
in
use
but
have
can
be
degraded
use.
A
series
copolymers
was
prepared
through
radical
copolymerization
n
‐butyl
acrylate,
4‐acryloyloxy
benzophenone
(ABP)
photo‐crosslinker,
dibenzo[c,e]oxepin‐5(7H)‐thione
(DOT)
to
backbone
thioesters.
The
optimum
tack
peel
strengths
were
found
for
molar
contents
0.05
mol%
ABP
0.25
DOT.
Degradation
thioesters
aminolysis
or
thiolysis
led
full
dissolution
networks,
loss
adhesive
properties
films
(decreases
measured
strengths),
quick
detachment
model
labels
a
substrate.
Inclusion
DOT
into
offers
viable
route
toward
recyclable
packaging
labels.
ACS Macro Letters,
Journal Year:
2024,
Volume and Issue:
13(5), P. 521 - 527
Published: April 16, 2024
The
incorporation
of
cleavable
comonomers
as
additives
into
polymers
can
imbue
traditional
with
controlled
deconstructability
and
expanded
end-of-life
options.
efficiency
which
comonomer
(CCAs)
enable
deconstruction
is
sensitive
to
their
local
distribution
within
a
copolymer
backbone,
dictated
by
copolymerization
behavior.
While
qualitative
heuristics
exist
that
describe
deconstructability,
comprehensive
quantitative
connections
between
CCA
loadings,
reactivity
ratios,
polymerization
mechanisms,
reactions
on
the
copolymers
containing
CCAs
have
not
been
established.
Here,
we
broadly
define
these
relationships
using
stochastic
simulations
characterizing
various
mechanisms
(e.g.,
coltrolled/living,
free-radical,
reversible
ring-opening
polymerizations),
ratio
pairs
(spanning
2
orders
magnitude
0.01
100),
loadings
(2.5%
20%),
sequence-dependent
behavior).
We
show
general
agreement
simulated
experimentally
observed
fragment
sizes
from
literature,
demonstrating
predictive
power
methods
used
herein.
These
results
will
guide
development
more
efficient
inform
formulation
deconstructable
materials.
Small,
Journal Year:
2024,
Volume and Issue:
20(25)
Published: Jan. 15, 2024
Abstract
Adhesive
materials
have
played
an
essential
role
in
the
history
of
humanity.
Natural
adhesives
composed
low‐molecular‐weight
monomers
been
overshadowed
by
modern
petroleum‐based
glues.
With
development
green
economy,
demand
for
eco‐friendly
has
increased.
Herein,
two
natural
biocompatible
compounds,
namely
thioctic
acid
(
TA
)
and
malic
MA
),
are
selected
to
prepare
a
high‐performance
pressure‐sensitive
adhesive
poly[
‐
].
This
can
be
quantitatively
obtained
via
simple
mixing
heating
process.
Poly[
]
shows
interesting
useful
properties,
including
reversible
flexibility,
high
elongation,
good
self‐healing,
owing
its
dynamic
polymerization
pattern
cross‐linking
behavior.
exhibits
excellent
adhesion
performance
under
various
extreme
conditions,
such
as
at
low
temperatures
hot
water.
High
values
shear
strength
(3.86
MPa),
peel
(7.90
N
cm
−1
loop
tack
(10.60
tensile
(1.02
resistance
(1628
h)
demonstrate
strong
effect
Additionally,
regenerated
monomer
forms
from
with
recovery
rate
(>90%).
Meanwhile,
anti‐bacterial
behavior
TA‐MA
is
recorded.
study
not
only
reported
new
but
also
fully
displayed
feasibility
using
small
molecules
achieve
robust
surface
adhesion.
