Depolymerizing off-the-shelf polymethacrylates with visible light
Chem,
Год журнала:
2025,
Номер
unknown, С. 102540 - 102540
Опубликована: Март 1, 2025
Язык: Английский
Tuning the Thermal Properties of Polymethacrylates With Bicyclobutane Monomers
Journal of Polymer Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 16, 2025
ABSTRACT
Developing
novel
yet
recyclable
plastics
is
necessary
as
society
advances
and
increases
reliance
on
materials.
Using
new
classes
of
monomers
enables
the
synthesis
unprecedented
polymers
for
applications.
Here,
we
report
copolymerization
with
bicyclo[1.1.0]butane
to
make
strained
backbone
units
analyze
thermal
property
changes
based
%
incorporation
monomers.
We
discover
that
even
low
(5%–20%)
methyl
bicyclobutane‐1‐carboxylate
(MBC)
poly(methyl
methacrylate)
(PMMA)
degradation
temperature
while
decreasing
glass
transition
temperature.
Efficient
depolymerization
achieved
copolymers
20%
or
fewer
MBC
under
photothermal
conversion.
Other
comonomers
(2‐methoxyethyl
methacrylate
oligo(ethylene
glycol)
monomethyl
ethyl
are
also
copolymerized
MBC,
assess
in
their
properties,
including
lower
critical
solution
temperatures
(LCSTs).
Our
work
expands
understanding
how
monomer
plays
a
role
copolymerization,
characteristics,
copolymers.
Язык: Английский
Exploring novel strategies and integrated systems for photothermal catalytic hydrogen production
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 162794 - 162794
Опубликована: Апрель 1, 2025
Язык: Английский
Abolhasani, Anastasaki, and Chen: 2025 Winners of the ACS Sustainable Chemistry & Engineering Lectureship Award
ACS Sustainable Chemistry & Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 21, 2025
Язык: Английский
Photo-Initiated Solution Depolymerization of Poly(Methyl Methacrylate) at Room Temperature
Опубликована: Янв. 1, 2025
Язык: Английский
In Situ Modification Assisted by HAT Chemistry for the Main Chain Initiated Depolymerization of Polymethacrylates
ACS Macro Letters,
Год журнала:
2025,
Номер
unknown, С. 822 - 829
Опубликована: Май 29, 2025
In
this
study
we
present
a
novel
strategy
to
enhance
the
depolymerization
of
nonfunctionalized
poly(methyl
methacrylate)
(PMMA)
by
enabling
in
situ
activation
polymer
backbone
using
photoinduced
Hydrogen
Atom
Transfer
(HAT)
chemistry.
By
screening
various
disulfide-based
RAFT
agents,
identified
commercially
available
bis(dodecylsulfanylthiocarbonyl)
disulfide
(DisRAFT-1)
as
most
effective,
achieving
up
53%
monomer
recovery
within
5
h
at
150
°C
under
405
nm
light
irradiation
tetrachloroethane
(TCE).
A
systematic
investigation
key
reaction
parameters,
including
DisRAFT-1
loading,
temperature,
and
concentration
(10-200
mM),
demonstrated
efficiency
versatility
approach.
Importantly,
highlight
that
light,
elevated
chlorinated
solvent
are
all
essential
initiate
depolymerization.
Moreover,
temporal
control
over
process
was
achieved
via
ON/OFF
cycles,
on-demand
This
work
offers
promising
route
toward
chemical
recycling
polymers
leveraging
mild
tunable
conditions.
Язык: Английский
Retrofitting PMMA with a Thermal Trigger for Efficient Depolymerization
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Июнь 3, 2025
This
work
reports
an
efficient
closed-loop
bulk
depolymerization
method
applicable
to
commercially
available
PMMA.
Acid
hydrolysis
(<10%)
and
subsequent
esterification
with
N-hydroxyphthalimide
are
used
incorporate
a
thermally
sensitive
trigger
that
allows
of
PMMA
at
temperature
lower
than
conventionally
employed.
We
showed
this
strategy
is
model
homopolymers
molecular
weights
ranging
from
28
1140
kg/mol.
The
same
was
for
(∼70%)
(Mn
=
439
kg/mol),
supporting
the
efficacy
practical
applications.
Furthermore,
we
demonstrate
can
be
leveraged
generate
depolymerizable
polymer
networks.
approach
reported
here
holds
potential
mitigate
polymethacrylate
waste
maintain
sustainable
economy.
Язык: Английский