Macromolecules,
Journal Year:
2023,
Volume and Issue:
56(11), P. 3913 - 3921
Published: May 24, 2023
In
general,
the
network
structure
formed
in
epoxy
resins
is
heterogeneous,
and
its
extent
dependent
on
curing
temperature.
Based
Fourier-transform
infrared
spectroscopy
conjunction
with
coarse-grained
molecular
dynamics
simulations,
we
herein
discuss
origin
of
mesoscopic
heterogeneity
an
resin
composed
a
typical
base
diamine
hardener,
which
react
each
other
two
steps.
The
rate
balance
first
second
step
reactions,
led
to
chain
extension
branching,
respectively,
depended
temperature;
at
higher
temperature,
second-step
reaction
became
faster.
Since
proceeded
more
slowly
lower
temperatures,
homogeneous
domain
was
as
unreacted
substances
were
incorporated
into
network.
At
hand,
rapidly
before
network,
leaving
isolated
small
fragments
nanoscale
voids
or
free
spaces
domain.
We
also
found
that
actively
reacting
length
scale
several
tens
nanometers
even
conversion
than
gel
point,
regardless
connection
domains
key
better
understanding
temperature
dependence
hierarchical
heterogeneity.
final
be
denser
while
heterogeneous
many
Our
picture
formation
drawn
by
combining
experimental
simulation
techniques
advances
our
current
resins.
Polymers,
Journal Year:
2022,
Volume and Issue:
14(6), P. 1170 - 1170
Published: March 15, 2022
Epoxy
resins
are
thermosets
with
interesting
physicochemical
properties
for
numerous
engineering
applications,
and
considerable
efforts
have
been
made
to
improve
their
performance
by
adding
nanofillers
formulations.
MXenes
one
of
the
most
promising
functional
materials
use
as
nanofillers.
They
attracted
great
interest
due
high
electrical
thermal
conductivity,
hydrophilicity,
specific
surface
area
aspect
ratio,
chemically
active
surface,
compatible
a
wide
range
polymers.
The
in
epoxy
is
incipient;
nevertheless,
literature
indicates
growing
good
chemical
compatibility
outstanding
composites,
which
widen
potential
applications
resins.
In
this
review,
we
report
an
overview
recent
progress
development
MXene/epoxy
nanocomposites
contribution
enhancement
properties.
Particularly,
application
protective
coatings
(i.e.,
anticorrosive
friction
wear),
electromagnetic-interference
shielding,
composites
discussed.
Finally,
discussion
challenges
topic
presented.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2021,
Volume and Issue:
9(24), P. 8018 - 8031
Published: June 8, 2021
The
discovery
of
huge
petroleum
reserves
in
the
19th
century
was
a
golden
opportunity
that
promoted
industrial
revolution,
by
offering
wide
variety
cheap
raw
materials
and
reliable
source
energy.
This
caused
an
unprecedented
increase
commodity
production
specialty
chemicals
order
to
fulfill
needs
global
markets.
However,
as
warming
environmental
issues
have
become
hazardous
worried
situation,
researchers
are
looking
for
biorenewable
monomers
with
low
toxicity
produce
more
sustainable
polymers.
policy
applied
epoxy
resin
because
their
high
volume
industry
range
applications.
review
highlights
recent
advances
preparation
diamines
diepoxy
synthesis
resins,
mainly
from
2-furfural,
5-(hydroxymethyl)furfural
(5-HMF),
2,5-furandicarboxylic
acid
(FDCA),
obtained
natural
cellulose
hemicellulose
feedstocks,
respectively,
able
replace
phthalic
moieties
polyethylene
terephthalate.
In
addition,
processes
involved
monomer
preparations,
such
reductive
amination,
etherification,
esterification,
carbonatation,
listed.
review,
reporting
quasi-exhaustive
synthetic
pathways
precursors
containing
furanic
describing
resulting
is
composed
seven
main
parts,
based
on
glycidyl
derivatives
one
or
two
four
furan
nuclei
bearing
not
spacer
between
ring
function.
influence
substituents
(O,
CO,
CH2)
these
groups
also
been
evaluated.
Finally,
thermal
few
mechanical
properties
biosourced
resins
were
compared
fossil
fuel
analogues
(from
bisphenol
A),
featuring
potential
biobased
nonrenewable
ones.
Journal of Physics Conference Series,
Journal Year:
2022,
Volume and Issue:
2267(1), P. 012079 - 012079
Published: May 1, 2022
Abstract
Over
the
past
decade,
green
chemistry
has
been
emphasizing
importance
of
environmental
sustainability
and
human
health,
aiming
to
minimize
toxins
reducing
wastes
in
an
economically
beneficial
manner.
The
field
metallic
materials
deterioration,
generally
faced
by
utilization
toxic
compounds,
discovered
a
promising
research
chemistry.
application
inhibitors
is
well-known
strategy
when
metal
corrosion
needs
be
avoided,
prevented,
controlled
or
mitigate.
Green
are
readily
available,
biodegradable,
ecologically
acceptable,
sustainable
renewable
sources.
Their
esteem
broadens
numerous
ranges
potential
applications
various
sectors
besides
“waste
energy”
context
circular
economy.
Extensive
on
biomass
such
as
corn
stalks,
nutshells,
straw,
forestry
residue
plant
waste-derived
tremendously
utilized
mitigation
different
industries
sustain
environment.
All
mentioned
aspects
topic
this
current
review,
which
meant
constructive
criticism
spotlight
use
waste
efficient
order
re-evaluate
their
viability
debate
prospective
field,
still
lacking
justification.
As
result,
article
aims
solve
two
problems;
will
benefit
both
environment
industry.
