Surface Topography Metrology and Properties,
Journal Year:
2024,
Volume and Issue:
13(1), P. 015002 - 015002
Published: Dec. 19, 2024
Abstract
The
needs
of
modern
industry
for
high-performance
lubricants
remain
difficult
to
meet.
Therefore,
finding
ways
improve
their
lubrication
performance
is
crucial.
A
novel
composite
consisting
two
different
structures
the
same
compound
was
synthesized
improving
tribological
properties.
Flake-like
micron
MoS
2
(M-MoS
)
with
a
size
approximately
10
μm
activated
via
oxidation,
ultrasonication,
and
grinding.
desired
micro/nano
structure
(MN-MoS
prepared
through
chemical
deposition
hollow
spherical
nano-MoS
diameter
75
nm
on
M-MoS
.
MN-MoS
combined
advantages
nano
possessed
excellent
properties
in
both
solid
lubricating
system
polylactic
acid
(PLA)
liquid
diisooctyl
sebacate
(DIOS).
In
PLA,
addition
0.1%
reduced
wear
rate
by
59.7%,
but
slightly
increased
coefficient
friction
(COF)
3.1%.
When
amount
0.5%
can
decrease
COF
11.75%.
DIOS,
58.9%
37.2%.
mechanisms
-modified
PLA
were
formation
/PLA
transfer
layer
counterpart
surface
improvement
thermal
stability
hardness
PLA.
However,
mechanism
DIOS
mainly
stable
film
containing
surface.
These
findings
provide
way
lubricant
additives
demonstrate
potential
application
value.
Journal of Vinyl and Additive Technology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 2, 2025
Abstract
The
aim
of
this
study
was
to
develop
polyvinyl
alcohol
(PVA)/carboxymethyl
cellulose
(CMC)/graphene
oxide
(GO)
nanofiber
mats
using
electrospinning
fabrication
technique.
Polymer
solutions
were
prepared
with
PVA
at
a
concentration
6%
w/v,
CMC
ranging
from
0.5%
1.5%
in
1:1
polymer
blend
ratio,
and
GO
nanofiller
0.1%
w/v.
Addition
amend
the
solution
properties
such
as
conductivity
viscosity,
leading
notable
alteration
diameters
90.514
169.225
nm.
As
evidenced
by
rheological
analysis,
addition
significantly
enhanced
storage
moduli
shear
stress
PVA/CMC/GO
compared
PVA/CMC.
According
tensile
properties,
strength
increased
25.59%
46.41%
0.1%–0.3%
w/v
PVA/CMC
mats,
contributing
overall
mechanical
improvements.
FTIR
spectroscopy
revealed
interactions
between
hydroxyl
(OH)
groups
carboxylate
(COOH)
CMCs,
intensity
OH
CH
absorption
bands.
presence
hydrophilic
functional
increases
wettability
indicated
reduced
water
contact
angles
51.321°
45.924°.
oxygen‐rich
structure
enhances
barrier
resulting
vapor
permeability
(WVP)
1.049
0.980
g/m.h.
Pa
moisture
retention
capacity
(MRC)
95.68%
90.854%.
Moreover,
TGA
analysis
showed
significant
improvement
decomposition
temperature
hybrid
nanofibers,
mass
loss
other
developed
nanofibers.
Overall,
obtained
results
validate
use
biopolymer
an
additive
for
production
improved
structural,
mechanical,
thermal
particularly
industrial,
medical
packaging
applications.
Highlights
Blending
polymers
overcome
single
system.
Development
PVA,
electrospun
mats.
Effect
on
Potential
future
applications
advanced
engineering
material
sciences.
Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi,
Journal Year:
2025,
Volume and Issue:
27(1), P. 324 - 341
Published: Jan. 20, 2025
In
this
study,
the
effects
of
weave
structures
used
in
base
fabric
on
surface
roughness
parameters
coated
polyester
fabrics
were
investigated.
100%
woven
with
different
weft
yarn
densities
basket,
twill,
and
sateen
patterns
calcite
(CaCO3),
a
widely
economical
filler
textile
coating.
The
properties
examined
by
evaluating
various
such
as
arithmetic
average
height
(Ra),
mean
peaks
(Rpm),
depth
valleys
(Rvm).
Warp
kept
constant
to
investigate
effect
changes
pattern
density.
Experimental
results
indicated
that
values
changed
depending
fabric,
warp
directions,
Overall,
after
coating
process,
Ra,
Rpm,
Rvm
decreased
both
directions.
