Journal of Composites Science,
Journal Year:
2025,
Volume and Issue:
9(3), P. 92 - 92
Published: Feb. 20, 2025
A
rapid
microwave-assisted
process
minimizing
waste
was
set
up
to
produce
bio-based
benzoxazine-like
monomers
produced
from
vanillylamine
and
melamine.
Without
excessive
purification,
different
viscous
liquid
precursors
had
a
remarkable
ability
form
four
strong
transparent
solid
cross-linked
thermosets,
displaying
lower
curing
temperatures
under
130
°C.
The
long
adhesive
performance
of
the
cured
materials
observed
using
glass
slides
or
aluminum
surfaces
they
could
become
good
alternative
epoxy
resin
for
metal
surfaces.
At
higher
temperatures,
these
solids
act
as
efficient
flame-retardants
proven
by
thermogravimetric
measurements.
best
candidates
gave
limiting
oxidation
index
value
41.9.
In
order
improve
intrinsic
surface
hydrophobicity
phenolic
resins,
slight
amounts
silica
iron
oxide
nanoparticles
were
dispersed
in
polymer
matrix,
finally
mechanical
resistance
pointed
out.
most
promising
our
melamine-based
loaded
with
pigment
furnish
silver-colored
paste
ready
being
afford
robust
solid,
which
does
not
undergo
contraction
deformation.
Journal of Polymer Science,
Journal Year:
2024,
Volume and Issue:
62(17), P. 3959 - 3978
Published: May 27, 2024
Abstract
This
work
studied
the
sustainable
approach
for
development
of
bio‐based
polybenzoxazine
composites
derived
from
thymol
and
utilized
diverse
applications
viz.,
superhydrophobic,
high
dielectric,
resistant
to
bacterial
corrosion.
The
molecular
structure
benzoxazines
was
ascertained
spectral
analyses
curing
behavior
assessed
using
differential
scanning
calorimetry
(DSC)
analysis.
were
polymerized
through
ring‐opening
polymerization
assess
their
thermal
stability
TGA.
Among
synthesized
polybenzoxazines,
poly(BT‐fa)
developed
bis‐thymol
(BT)
furfurylamine
(fa)
which
possesses
furfural
core
contributes
higher
with
enhanced
value
char
yield
43%.
Thus,
chosen
preparation
composites,
found
that
15
wt%
chicken
feather
carbon
(CFC)
cashew
nutshell
cake
(CSC)
used
as
reinforcements
exhibit
significantly
decomposition
temperature
77%
69%
respectively.
Dielectric
performance
k
values
7.66
8.66
obtained
CFC
CSC
bio‐carbon
These
also
exhibited
substantial
antibacterial
activity,
indicating
potential
utility
toward
resistance
against
microbial
colonization.
poly(BT‐sa)
exhibits
highest
water
contact
angle
(WCA)
151°.
To
exploit
superhydrophobic
properties
cotton
fabrics
coated
poly(BT‐sa).
It
fabric
an
excellent
WCA
161°,
indicates
its
suitability
self‐cleaning
water‐repellent
applications.
Further,
poly(BT‐oa)
anti‐corrosion‐resistant
than
other
polybenzoxazines
better
protection
mild
steel
surfaces
tensile
modulus
/flexural
strength
flexural
are
5.1/3.7
GPa
66
±
1/103
1
MPa,
Data
bi‐functional
different
studies
suggest
these
materials
can
be
in
antimicrobial,
corrosion‐resistant
