Processes,
Год журнала:
2023,
Номер
11(4), С. 1033 - 1033
Опубликована: Март 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.
Applied Sciences,
Год журнала:
2025,
Номер
15(6), С. 3093 - 3093
Опубликована: Март 12, 2025
The
removal
of
the
As(V)
and
Iprodione
fungicide
onto
EGS@APTES-GT,
obtained
by
amino-modified
expanded
glass
spheres
(EGS)
modified
with
goethite,
was
studied
in
this
work.
Material
characterization
performed
using
SEM/EDS,
XRD,
FTIR
techniques.
adsorption
capacities
51.01
94.28
mg
g−1,
for
at
25
°C,
respectively,
were
achieved.
A
kinetic
study
indicated
lower
intraparticle
diffusional
transport
resistance.
Physisorption
is
dominant
mechanism
removal,
while
surface
complexation
As(V).
disposal
effluent
water
after
five
adsorption–desorption
cycles
attained
through
photocatalytic
degradation
arsenate
precipitation.
Exhausted
processed
goethite
acidic
dissolution
grinding,
used
as
a
reinforcing
filler
composites
production
based
on
commercial
unsaturated
polyester
resin
(UPe).
An
improvement
mechanical
properties
observed,
gradual
increase
tensile
strength,
reaching
maximum
25.9%
UPe
10
wt.%
ground
exhausted
adsorbent
compared
to
pure
UPe.
overarching
concept
defined
aspiration
develop
technologies
that
address
all
output
flows
advanced
processes.
Thus,
combination
wastewater
treatment
potentially
marketable
successfully
achieved
both
low
environmental
impact
implementation
circular
economy.
