Surface-Activated Mechano-Catalysis for Ambient Conversion of Plastic Waste
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(38), P. 26139 - 26147
Published: Sept. 9, 2024
Improved
recycling
technologies
can
offer
sustainable
end-of-life
options
for
plastic
waste.
While
polyolefins
be
converted
into
small
hydrocarbons
over
acid
catalysts
at
high
temperatures,
we
demonstrate
an
alternative
mechano-catalytic
strategy
ambient
conditions.
The
mechanism
is
fundamentally
different
from
classical
acidity-driven
high-temperature
approaches,
exploiting
mechanochemically
generated
radical
intermediates.
Surface
activation
of
zirconia
grinding
spheres
creates
redox
active
surface
sites
directly
the
point
mechanical
energy
input.
This
allows
control
mechano-radical
reactivity,
while
powder
are
not
active.
Optimized
milling
parameters
enable
formation
45%
C
Language: Английский
Progress Toward Sustainable Polymer Technologies with Ball-Mill Grinding
Progress in Polymer Science,
Journal Year:
2024,
Volume and Issue:
unknown, P. 101900 - 101900
Published: Oct. 1, 2024
Language: Английский
Influence of ball milling parameters on the mechano-chemical conversion of polyolefins
RSC Mechanochemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 18, 2024
Mechano-chemical
plastic
recycling
suffers
from
low
overall
yields.
We
identified
the
role
of
key
parameters
to
maximize
mechanical
impact
increase
productivity
small
hydrocarbons,
such
as
propene,
polypropylene.
Language: Английский
Impact of Ball Milling on the Microstructure of Polyethylene Terephthalate
Ali Zaker,
No information about this author
Karine Auclair
No information about this author
ChemSusChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 7, 2024
Polyethylene
terephthalate
(PET)
is
a
semi-crystalline
polymer
that
finds
broad
use.
Consequently,
it
contributes
to
the
accumulation
of
plastics
in
environment,
warranting
PET
recycling
technologies.
Ball
milling
commonly
used
technique
for
micronization
before
transformation.
It
has
also
recently
been
reported
as
an
efficient
mixing
strategy
enzymatic
hydrolysis
moist-solid
mixtures.
However,
effect
on
microstructure
not
systematically
investigated.
Thus,
primary
objective
this
study
characterize
changes
caused
by
various
ball
conditions.
different
forms
was
examined,
including
pre-
and
post-consumer
PET,
well
textiles.
The
material
treated
range
frequencies
duration,
analysis
particle
size,
crystallinity
differential
scanning
calorimetry
powder
X-ray
diffraction,
morphology
electron
microscopy.
Interestingly,
our
results
suggest
convergence
~30
%
within
15
minutes
at
30
Hz.
These
are
consistent
with
equilibrium
between
amorphous
crystalline
regions
being
established
during
milling.
combined
data
constitutes
reference
guide
research.
Language: Английский
In-situ monitoring of polymer mechanochemistry: what can be learned from small molecule systems
Frontiers in Chemistry,
Journal Year:
2024,
Volume and Issue:
12
Published: Oct. 16, 2024
Using
mechanical
energy
to
drive
chemical
transformations
is
an
exciting
prospect
improve
the
sustainability
of
reactions
and
produce
products
not
achievable
by
more
traditional
methods.
In-situ
monitoring
reaction
pathways
vital
deliver
reproducible
results
required
for
scale
up
realize
potential
mechanochemistry
beyond
chemistry
lab.
This
mini
review
will
discuss
recent
advances
in
in-situ
ball
milling
polymer
mechanochemistry,
highlighting
shared
knowledge
up.
Language: Английский