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Polymer Chemistry 2018

Polymer Sciences

ISSN: 2471-9935

Page 27

March 26-28, 2018

Vienna, Austria

3

rd

Edition of International Conference and Exhibition on

Polymer Chemistry

E

thylene-octene copolymer (EOC) is a copolymer which

exhibits low density, good elasticity and improved

processability and widely being used in the automotive,

electrical cable insulation and footwear applications.

Conducting polymer composites of EOC (with octene content

of 45 wt.%) were prepared using three different types of

fillers; expandable graphite (EG), multiwall carbon nanotube

(MWCNT) and carbon fiber (CF). EOC/EG composites were

prepared by melt blending of EOC and EG, while EOC/MWCNT

and EOC/CF composites were prepared by ultrasonication

of EOC solutions/filler systems followed by precipitation.

Electrical (both AC and DC) and thermal conductivities of

composites were measured. Flammability resistance tests

of the EOC/EG composites only were carried out and showed

that expandable graphite is an excellent flame-retardant filler.

Percolation behaviour of EOC/EG composites were observed

at around 16 vol.% of filler loading while for EOC/CF it was at,

2.21 vol.% and for EOC/MWCNT, it was at 5.32 vol.% which is a

clear indication of effect of filler, or aspect ratio of fillers in the

composites. Stress at break and elongation at break of EOC/

MWCNT and EOC/CF composites found increasing initially and

followed a downward trend which is mainly due to reduction

in chain flexibility which predominates over the reinforcing

effect of fillers. From shore-A hardness values, it is clear

that even the highest filler level did not reduce the softness

of composites. Good electrical/thermal conductivities and

improved mechanical properties along with comparable

shore-A hardness values of EOC composites with excellent

residual strain (

ε

r) of pure EOC which is a direct measure of

elasticity of a material, shows the potential of EOC to find its

application as strain sensors.

Biography

Rajesh Theravalappil obtained his PhD Degree in Chemistry and Materials

Technology from Tomas Bata University in Zlin, Czech Republic in 2012. He

joined the Center for Refining and Petrochemicals of the Research Institute,

King Fahd University Petroleum and Minerals, Saudi Arabia post completion

of his PhD and is currently a Research Scientist. He has 15 years of research

and industrial experience in the field of polymer science. His research inter-

est includes: polymer synthesis and characterization, petrochemicals, poly-

mer blends and composites, material development.

[email protected]

Carbon and graphite filler composites of ethylene-

octene copolymer: potential candidates for pressure/

strain sensors

Rajesh Theravalappil

1

and Petr Svoboda

2

1

King Fahd University of Petroleum and Minerals, Saudi Arabia

2

Tomas Bata University in Zlín, Czech Republic

Rajesh Theravalappil, Polym Sci, Volume 4

DOI: 10.4172/2471-9935-C1-008