Polymers,
Год журнала:
2025,
Номер
17(4), С. 535 - 535
Опубликована: Фев. 19, 2025
Due
to
excellent
chemical
resistance
and
impermeability,
high-density
polyethylene
(HDPE)
is
widely
used
in
petrochemical
transportation,
product
packaging,
sports
equipment,
marine
applications.
Yet,
with
the
wide
variety
of
service
environments,
its
mechanical
thermal
properties
do
not
meet
demand.
In
present
study,
a
compounding
cross-linker
comprising
di-tert-butyl
peroxide
(DTBP)
triallyl
isocyanurate
(TAIC)
employed
by
combining
two-step
preparation
process.
High-quality
cross-linking
reactions
are
achieved
for
HDPE.
this
DTBP
first
examined
separately.
A
peak
degree
74.7%
achieved,
there
large
improvement
properties.
Subsequently,
composite
system
TAIC
investigated.
The
82.1%
(10%
increase
compared
DTBP).
heat
deformation
temperature
80.1
°C
(22%
impact
strength
104.73
kJ/m2
(207%
neat
HDPE).
flexural
33.6
MPa
results
show
that
further
improves
degree,
resistance,
HDPE,
indicating
potential
application
engineering
materials
high
performance.
Chemical Reviews,
Год журнала:
2024,
Номер
124(12), С. 7829 - 7906
Опубликована: Июнь 3, 2024
Covalent
network
polymers,
as
materials
composed
of
atoms
interconnected
by
covalent
bonds
in
a
continuous
network,
are
known
for
their
thermal
and
chemical
stability.
Over
the
past
two
decades,
these
have
undergone
significant
transformations,
gaining
properties
such
malleability,
environmental
responsiveness,
recyclability,
crystallinity,
customizable
porosity,
enabled
development
integration
dynamic
chemistry
(DCvC).
In
this
review,
we
explore
innovative
realm
polymers
focusing
on
recent
advances
achieved
through
application
DCvC.
We
start
examining
history
fundamental
principles
DCvC,
detailing
its
inception
core
concepts
noting
key
role
reversible
bond
formation.
Then
reprocessability
DCvC
is
thoroughly
discussed,
starting
from
milestones
that
marked
evolution
progressing
to
current
trends
applications.
The
influence
crystallinity
then
reviewed,
covering
diversity,
synthesis
techniques,
functionalities.
concluding
section,
address
challenges
faced
field
speculates
potential
future
directions.
Polymer Chemistry,
Год журнала:
2024,
Номер
15(9), С. 815 - 846
Опубликована: Янв. 1, 2024
This
tutorial
review
of
linear
viscoelasticity
is
targeted
at
polymer
chemists
working
with
covalent
adaptable
networks.
It
provides
an
overview
concepts,
analysis,
misconceptions,
and
best
practices
for
rheological
experiments.
Chemical Science,
Год журнала:
2023,
Номер
15(3), С. 832 - 853
Опубликована: Дек. 5, 2023
Insight
into
the
thermodynamics
and
kinetics
of
depolymerization
to
understand
barriers
that
prevent
effective
monomer
regeneration
from
vinyl
polymers,
an
exploration
overcoming
these
limitations.
Chemical Science,
Год журнала:
2023,
Номер
15(3), С. 879 - 895
Опубликована: Дек. 11, 2023
Dynamic
covalent
synthesis
aims
to
precisely
control
the
assembly
of
simple
building
blocks
linked
by
reversible
bonds
generate
a
single,
structurally
complex,
product.
In
recent
years,
considerable
progress
in
programmability
dynamic
systems
has
enabled
easy
access
broad
range
assemblies,
including
macrocycles,
shape-persistent
cages,
unconventional
foldamers
and
mechanically-interlocked
species
(catenanes,
knots,
Macromolecules,
Год журнала:
2024,
Номер
57(3), С. 1362 - 1369
Опубликована: Фев. 5, 2024
Dynamic
covalent
thermosets
have
emerged
as
a
next-generation
sustainable
plastic
that
combines
the
advantages
of
traditional
and
thermoplastics.
However,
dynamic
generally
suffer
from
trade-off
between
strength/stiffness
ductility/toughness.
Herein,
strategy
to
simultaneously
strengthen
toughen
thermosets,
incorporation
hydrogen-bonded
(H-bonded)
cross-links
into
networks,
is
reported.
We
designed
polyimine
network
cross-linked
by
both
imine
bonds
H-bonds,
resulting
in
remalleable
recyclable
thermoset
with
high
yield
strength
(ca.
55.2
MPa)
Young's
modulus
1.7
GPa)
well
ductility
72%)
toughness
32.7
MJ
m–3).
When
H-bonded
are
removed
or
replaced
bonds,
mechanical
polyimines
significantly
declined,
respectively.
Therefore,
this
work
provides
an
effective
design
principle
for
strong
tough
modularity
recyclability.
Polymers,
Год журнала:
2024,
Номер
16(4), С. 454 - 454
Опубликована: Фев. 6, 2024
This
review
presents
polyurea
(PU)
synthesis,
the
structure–properties
relationship,
and
characterization
aspects
for
ballistic
protection
applications.
The
synthesis
of
entails
step-growth
polymerization
through
reaction
an
isocyanate
monomer/prepolymer
a
polyamine,
each
component
possessing
functionality
at
least
two.
A
wide
range
excellent
properties
such
as
durability
high
resistance
against
atmospheric,
chemical,
biological
factors
has
made
this
polymer
outstanding
option
Polyureas
are
extraordinary
case
because
they
contain
both
rigid
segments,
which
due
to
diisocyanates
used
hydrogen
points
formed,
flexible
zone,
is
chemical
structure
polyamines.
These
characteristics
motivate
their
application
in
systems.
Polyurea-based
coatings
have
also
demonstrated
abilities
candidates
impulsive
loading
applications,
affording
better
response
nanocomposite-coated
metal
sheet
action
shock
wave
or
impact
projectile,
by
suffering
lower
deformations
than
neat
metallic
plates.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(19), С. 9609 - 9651
Опубликована: Янв. 1, 2024
We
present
the
state-of-the-art
of
circular
polymers
based
on
monomer
and
polymer
design
reversible
ring-opening
addition
polymerization
reactions
without
involvement
other
reactants.
