Polymers,
Journal Year:
2024,
Volume and Issue:
16(23), P. 3364 - 3364
Published: Nov. 29, 2024
To
prepare
novel
biodegradable
copolymers
with
functional
substituents
that
are
distributed
statistically
or
randomly
over
the
macromolecule
chain
and
have
improved
characteristics
compared
to
homopolymers,
we
conducted
a
series
of
synthetic
experiments
cyclic
monomer,
5-(benzyloxy)-1,3-dioxepan-2-one
(
RSC Sustainability,
Journal Year:
2024,
Volume and Issue:
2(5), P. 1431 - 1443
Published: Jan. 1, 2024
A
series
of
Co(
iii
)
and
Cr(
)(salen)
complexes
in
the
presence
onium
salts
have
been
examined
for
coupling
CO
2
biomass
based
eugenol
epoxide
selective
production
polycarbonates
a
partially
sustainable
process.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(16), P. 3908 - 3908
Published: Aug. 18, 2024
A
method
for
obtaining
non-isocyanate
polyurethane
(NIPU)
foams
from
cyclic
carbonate
(CC)
based
on
soybean
oil
was
developed.
For
this
purpose,
synthesized
epoxidized
and
CO
ChemCatChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 8, 2024
Abstract
2,5‐Furandicarboxylic
acid
(FDCA)
is
a
biomass‐derived
monomer
for
the
production
of
poly(ethylene
2,5‐furandicarboxylate)
(PEF),
which
novel
polyester
that
can
serve
as
sustainable
alternative
to
traditional
petroleum‐based
terephthalate)
(PET).
Currently,
industrial
FDCA
depends
on
thermo
catalytic
aerobic
oxidation
5‐hydroxymethylfurfural
(HMF)
using
heterogeneous
catalysts
in
aqueous
solution,
process
equivalent
homogeneous
bases
are
usually
needed
promote
hydroxymethyl
and
aldehyde
groups
simultaneously
improve
solubility
oxidative
products
via
forming
carboxylate.
The
involvement
massive
base
causes
risks
equipment
corrosion
necessitates
subsequent
product
separation
purification
with
large
amount
acid.
In
this
context,
base‐free
HMF
has
attracted
much
concern.
Nowadays,
by
developing
supported
multiple
sites,
diluted
substrate
finding
good
solvent
FDCA,
progress
been
achieved
field.
This
review
provides
state
art
catalysis
under
conditions,
highlighting
mechanism
shed
light
catalyst
design
principles.
ACS Engineering Au,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 31, 2024
Polyurethane
foams
(PUF)
are
essential
materials
known
for
their
exceptional
chemical
and
mechanical
properties,
making
them
ubiquitous
in
a
wide
range
of
applications.
Conventionally,
PUF
produced
through
polyaddition
reactions
between
polyols
polyisocyanates
at
room
temperature,
where
water
plays
critical
role
this
process
by
hydrolyzing
the
isocyanates,
leading
to
release
carbon
dioxide
(CO2)
as
blowing
agent.
In
recent
years,
isocyanates
have
raised
significant
concerns
industries
consumers
due
high
toxicity.
Therefore,
driving
need
explore
alternative
synthesis
routes
that
do
not
involve
use
isocyanates.
Nonisocyanate
polyurethane
(NIPUF)
derived
from
aminolysis
cyclic
carbonates
emerged
most
promising
solution
replace
conventional
method
producing
PUF.
Despite
this,
challenging
aspect
lies
identifying
suitable
foaming
strategy
NIPUF
can
satisfy
both
sustainability
performance
requirements.
view
first
part
review
focuses
on
background,
chemistry,
challenges
second
part,
chemistry
various
strategies
used
prepare
discussed
analyzed.
Finally,
outlook
future
research
focus
areas
outlined.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(23), P. 3364 - 3364
Published: Nov. 29, 2024
To
prepare
novel
biodegradable
copolymers
with
functional
substituents
that
are
distributed
statistically
or
randomly
over
the
macromolecule
chain
and
have
improved
characteristics
compared
to
homopolymers,
we
conducted
a
series
of
synthetic
experiments
cyclic
monomer,
5-(benzyloxy)-1,3-dioxepan-2-one
(