Advances in the degradation and recycling of polyurethanes: biodegradation strategies, MALDI applications, and environmental implications
Waste Management,
Год журнала:
2025,
Номер
198, С. 21 - 45
Опубликована: Фев. 27, 2025
Язык: Английский
A Novel Polyurethane Microcapsule Coated with Polyacrylamide Using D-Sorbitol as Chain Extender for Enhanced Oil Recovery
Yaowei Wu,
Zuming Jiang,
Y. Wang
и другие.
Опубликована: Янв. 1, 2025
Polyacrylamide(PAM)
is
a
common
oil
flooding
agent
with
excellent
thickening
ability.
However,
the
application
of
PAM
faces
challenge
viscosity
loss
during
formation
transportation
and
cannot
meet
expectations
recovery
in
fields.
To
solve
this
problem,
polyurethane
was
selected
for
microencapsulation
through
simple
emulsion
polymerization
method
work.
It
worth
mentioning
that
non-toxic
renewable
D-sorbitol
used
as
chain
extender
synthesis
microcapsules
instead
commonly
diols
or
diamines
obtained
from
non-renewable
petroleum
resources,
which
has
not
been
reported
previous
reports.
Mechanical
stirring
to
simulate
state
polymer
subjected
shear
stratigraphic
transport.
The
releasing
performance
characterized
by
measuring
change
time.
Meanwhile,
we
optimized
ratio
achieve
longest
release
Experiments
showed
feasible
preparation
polyurethane,
prepared
at
concentration
8%
solution
had
slow-release
time
75
h
25
oC
500
rpm.
We
also
samples
BDO
comparison,
experiments
SO8
longer
can
better
demand.
exhibited
resistance
heat
resistance,
attributed
rigidity
high
cross-linking
density
brought
about
hard
segment
polyurethane.
These
PAM-containing
promising
enhancing
recovery.
Язык: Английский
Biphasic Aromatic Amine-Cured Polybutadiene Polyurethane-Ureas for Simultaneous Bonding of Materials with Different Polarities
Langmuir,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 4, 2025
In
this
study,
aromatic
amine
curing
agents
(A-HD,
A-NPG,
and
A-DCP)
were
synthesized
through
the
Michael
addition
of
3-aminobenzylamine
with
1,6-hexanediol
diacrylate,
neopentyl
glycol
octahydro-1H-4,7-methanoindene-1,5-diyldimethanediyl
bisprop-2-enoate,
respectively.
The
incorporation
these
into
low-polarity
polybutadiene
polyurethane-ureas
balanced
polar
dispersion
components
surface
energy,
enhancing
simultaneous
bonding
performance
materials
different
polarities.
Atomic
force
microscopy
revealed
that
prepared
exhibited
a
significant
microphase
separation
between
soft
hard
segments.
segments
facilitated
to
materials,
while
isocyanate
enabled
effective
adhesion
materials.
Moreover,
viscosity
pot
life
polyurethane-urea
mixture
can
be
controlled
modulation
intermediate
structures
agents.
sample
PU-DCP
achieved
highest
shear
strength
4.36
MPa
steel
sheets
(a
material)
styrene-butadiene
rubber
material).
This
was
39%
53%
higher
than
those
cured
commonly
used
4,4'-methylene
bis(2-chloroaniline)
(MOCA)
dimethyl
thio-toluene
diamine
(E300).
paper
presents
method
achieve
phase-separated
structure
in
polyurethanes.
Язык: Английский
Recent Progress on Bio-based Polyurethanes: Synthesis, Structure and Cutting-Edge Applications
Yunran Zhang,
Hui Dong,
Wenjie Yang
и другие.
Materials Today Communications,
Год журнала:
2025,
Номер
unknown, С. 112279 - 112279
Опубликована: Март 1, 2025
Язык: Английский
A novel polyurethane microcapsule coated with polyacrylamide using D-sorbitol as chain extender for enhanced oil recovery
Yaowei Wu,
Zuming Jiang,
Y. Wang
и другие.
Journal of Polymer Research,
Год журнала:
2025,
Номер
32(6)
Опубликована: Июнь 1, 2025
Язык: Английский
Recent Advances in Polyurethane for Artificial Vascular Application
Polymers,
Год журнала:
2024,
Номер
16(24), С. 3528 - 3528
Опубликована: Дек. 18, 2024
Artificial
blood
vessels
made
from
polyurethane
(PU)
have
been
researched
for
many
years
but
are
not
yet
in
clinical
use.
The
main
reason
was
that
the
PU
materials
prone
to
degradation
after
contact
with
and
will
also
cause
inflammation
long-term
implantation.
At
present,
has
progress
biostability
biocompatibility,
respectively.
artificial
still
requires
a
balance
between
material
stability
biocompatibility
maintain
its
vivo,
which
needs
be
further
optimized.
Based
on
requirement
of
vascular
applications,
this
paper
views
development
biostable
PU,
bioactive
bioresorbable
PU.
improvement
monomer
structure,
chemical
composition,
additives
discussed
improve
vivo.
surface
grafting
functionalization
methods
reduce
thrombosis
promote
endothelialization
improving
summarized.
In
addition,
tissue-engineered
is
rate
mechanical
properties.
ideal
must
good
properties,
stability,
at
same
time.
Finally,
application
potential
prospected.
Язык: Английский