PSI - Issue 14

Vivek khare, Shubham srivastava, Sudhir kamle, G.M. Kamath / Structural Integrity Procedia 00 (2018) 000 – 000

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Vivek Khare et al. / Procedia Structural Integrity 14 (2019) 215–225

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Table 3. MWCNT (Pristine) Properties

PP

0.5% 16.2 1.87

1%

2%

Tensile strength (MPa)

15.9 3.11

+1.88 % 19.6

+23.27% 10.9

-31.44% -10.28%

Strain at break (%)

-39.87%

2.74

-11.89%

2.79

Table 4. MWCNT ( – COOH functionalized) Properties

PP

0.5% 18.3 2.79

1%

2%

Tensile strength (MPa)

15.9 3.11

+15.09 % -10.28 %

24.5 3.95

+54.08 % 18

+13.2 % -26.68 %

Strain at break (%)

+27 %

2.28

Table 5. Creep strain up to 1 MPa and 5 seconds of loading Properties PP

0.5% P

0.5% F

1% P

1% F

2% P

2% F

Creep strain

0.000618

0.000506

0.00053 0.000558 0.000631

0.000527 0.00062

4.3. Fractography

Fig. 7. FESEM micrographs (a) Neat-PP; (b) 0.5 % MWCNT-COOH-PP; (c) 1 % MWCNT-COOH-PP; (d) 2 % MWCNT-COOH-PP nanocomposites