Processes,
Journal Year:
2023,
Volume and Issue:
11(4), P. 1033 - 1033
Published: March 29, 2023
Styrene-butadiene
(SBR)
and
acrylonitrile-butadiene
(NBR)
rubber
blends
with
tetramethyl
thiuram
disulfide
(TMTD)
monosulfide
(TMTS)
accelerators
environmentally
friendly
plasticizers,
obtained
from
PET
recycling
biobased
resources
(LA/PG/PET/EG/LA),
were
prepared.
The
mechanical
properties
of
the
products
tested
compared
those
commercial
dioctyl
terephthalate
(DOTP).
TMTS
was
prepared
by
simple
efficient
one-pot
synthesis
dimethylamine,
carbon
disulfide,
potassium
cyanide,
ammonium
chloride
as
catalysts
in
recycled
isopropanol/water
azeotrope
solvent.
In
a
comparative
study,
methoxide,
ethoxide,
iodide,
amide
ions
also
used.
two-step
reaction
mechanism
involves
oxidation
amine
salt
dimethyldithiocarbamic
acid
to
TMTD
hydrogen
peroxide
sulfur
elimination
bond.
Potassium
cyanide
appears
be
most
nucleophile.
simplicity
operation,
mild
conditions,
solvent
recycling,
high
yields,
applicability
industrial
level
are
advantages
this
process.
Shore
hardness,
tensile
strength,
compression
test
results
vulcanized
before
after
aging
showed
similar
for
both
accelerators,
while
somewhat
better
LA/PG/PET/EG/LA
plasticizer.
Chemical Science,
Journal Year:
2023,
Volume and Issue:
15(1), P. 204 - 212
Published: Nov. 27, 2023
Herein,
a
new
type
of
hollow
carbon
nanospheres
(HCNs)
is
designed
and
synthesized
by
pyrolysis
biomass
dealkali
lignin,
as
an
efficient
nanocatalyst
for
the
elimination
antibiotics
in
complex
water
matrices.
Molecules,
Journal Year:
2023,
Volume and Issue:
28(14), P. 5310 - 5310
Published: July 10, 2023
In
this
study,
pristine
kiwi
peel
(KP)
and
nitric
acid
modified
(NA-KP)
based
adsorbents
were
prepared
evaluated
for
selective
removal
of
cationic
dye.
The
morphology
chemical
structure
KP
NA-KP
fully
characterized
compared,
results
showed
modification
introduced
more
functional
groups.
Moreover,
the
adsorption
kinetics
isotherms
malachite
green
(MG)
by
investigated
discussed.
that
process
MG
onto
followed
a
pseudo-second-order
kinetic
model
Langmuir
isotherm
model,
while
pseudo-first-order
Freundlich
model.
Notably,
maximum
capacity
was
580.61
mg
g−1,
which
superior
to
(297.15
g−1).
Furthermore,
thermodynamic
studies
demonstrated
feasible,
spontaneous,
endothermic
nature
NA-KP.
Importantly,
selectivity
towards
dye
against
anionic
methyl
orange
(MO).
When
molar
ratio
MG/MO
1:1,
separation
factor
(αMG/MO)
698.10,
5.93
times
KP.
addition,
hydrogen
bonding,
π-π
interactions,
electrostatic
interaction
played
important
roles
during
This
work
provided
low-cost,
eco-friendly,
efficient
option
from
dyeing
wastewater.
