Polymers,
Journal Year:
2024,
Volume and Issue:
16(24), P. 3528 - 3528
Published: Dec. 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.
ACS Polymers Au,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 18, 2025
Materials
derived
from
natural
sources
are
demanded
for
future
applications
due
to
the
combination
of
factors
such
as
sustainability
increase
and
legislature
requirements.
The
availability
efficient
analysis
vegetable
oils
(triacylglycerides)
open
an
enormous
potential
incorporating
these
compounds
into
various
products
ensure
ecological
footprint
decreases
provide
advantageous
properties
eventual
products,
flexibility,
toughness,
or
exceptional
hydrophobic
character.
double
bonds
located
in
many
centers
chemical
functionalization,
epoxidization,
hydroxylation,
nucleophile
substitutions
using
acids
anhydrides.
Naturally
occurring
castor
oil
comprises
a
reactive
vacant
hydroxyl
group,
which
can
be
modified
via
numerous
approaches.
This
comprehensive
Review
provides
overall
insight
toward
multiple
materials
utilities
functionalized
glycerides
additive
manufacturing
(3D
printing),
polyurethane
(including
their
recycling),
coatings,
adhesives.
work
complex
list
investigated
studied
throughout
available
literature
describes
principles
each
selected
application.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 2, 2025
Abstract
Developing
high-performance,
sustainable
adhesives
for
automotive,
aerospace,
and
industrial
applications
remains
a
major
challenge
due
to
the
inherent
trade-off
between
mechanical
strength
thermal
stability
in
bio-based
materials.
While
previous
studies
have
explored
polyurethane
(PU)
adhesives,
achieving
superior
adhesion
durability
challenging
when
compared
petroleum-based
counterparts.
This
study
presents
novel
adhesive
system
utilizing
polypropylene
glycol
(PPG2000),
isophorone
diisocyanate
(IPDI),
renewable
polyols
(isosorbide-derived
polyols,
diglycerol,
glycerol).
The
were
synthesized
via
controlled
one-shot
polymerization
process
with
4-tert-butylphenol
as
an
end-capping
agent,
enabling
precise
modulation
of
crosslink
density
molecular
architecture.
Fourier-transform
infrared
(FT-IR)
spectroscopy
confirmed
complete
urethane
bond
formation,
isocyanate
group
(NCO%)
titration
validated
stoichiometric
conversion.
Gel
permeation
chromatography
(GPC)
revealed
distinct
weight
distributions,
which
influence
performance
by
affecting
density,
elasticity,
depending
on
polyol
structure.
Thermal
analysis
showed
that
isosorbide-derived
formulations
exhibited
up
25°C
higher
degradation
onset
temperature
10°C
increase
glass
transition
(Tg)
adhesives.
Meanwhile,
containing
diglycerol
glycerol
demonstrated
39%
shear
(32.5
MPa)
77%
improved
impact
resistance
(36.8
relative
reference
system,
attributed
optimized
segmental
mobility
crosslinking
effects.
work
establishes
strategic
framework
designing
while
acknowledging
limitations
such
potential
variability
raw
material
sources
suggesting
future
research
into
long-term
environmental
performance,
not
only
surpasses
conventional
systems
but
also
aligns
principles
green
chemistry
innovation.
These
findings
offer
pathway
next-generation
structural
applications.
