P. PAL ET AL. 281
HNTs dispersion was poorer in comparison with gHNTs.
igher the agglomerations lower the surface areHa and
es
re performed by Houns-
g machine) tensile testing
ller distribution helps to im-
pr
nanocomposites were fabricated via
vice versa, so better dispersion gives enough surface area
for load transfer to the halloysite. As dispersion of fillers
is a vital factor for the physical performances of the nano-
composites, S-gHNT showed the highest storage modu-
lus value among the others.
3.6. Mechanical Properti
Tensile test of the specimens we
field HS 10 KS (universal testin
machine maintaining ASTM standard D638, with cross-
head speed of 1 mm/min at room temperature (25˚C).
Micro hardness of the specimens were performed using
UHL VMHT (VH001), maintaining the load 25 gf (gram
force) and time 12 s. Tensile strength and hardness values
are summarized in Table 1.
Gradual increase in tensile strength as well as hardness
had been observed. In fact fi
ove mechanical properties. Consequently nanocompo-
sites can sustain maximum load. Load transfer was best
for S-gHNT nanocomposite thus it showed the highest
values in respective fields.
4. Conclusion
Virgin blend and
Figure 5. Storage modulus of (a) pure blend (b) raw HNTs
filled nanocomposites and (c) gHNTs filled nanocomposite.
anocomposites.
Table 1. Tensile strength and hardness value of blend and
n
Sample Code Tensile Strength (MPa) Hardness Value
S 32.4 18.05
S-T
S-gHNT 36.9 19.09
HN35.3 18.40
melt mixing technique. Mechanical properties and crys-
tallinity of these nanocomposites were investigated.
HNT as nucleatingt and therefore crys-
tallieases. It wasn that, HNTs after surface
“Structural, Electronic, and Mechanical Proper-
ties of Single-Walled Halloysite Nanotube Models,”
Journal of Phy 114, No. 26, 2010,
pp. 11358-1132e
s acted agen % of
nity incr show
treatment uniformly dispersed in blend matrices and re-
mains mainly in between two phases. Better dispersion of
gHNTs improves the ultimate performance of the nano-
composite.
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