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allied
academies
Materials-Metals 2017
Page 58
November 16-17, 2017 Paris, France
13
th
Annual Conference on
Materials Science, Metal and Manufacturing
Journal of Materials Science and Nanotechnology
Volume 1 Issue 2
Experimental analysis of low density poly ethylene
effect on the mechanical properties of poly
ethylene vinyl acetate for prosthetic and orthotic
application
Yenealem Yilma
Ethiopia biotechnology institute, Ethiopia
I
n this comparative study, the effect of low density poly
ethylene and ethylene vinyl acetate loading ratio by melt
blending with additives and without additives on mechanical
properties for prosthetic and orthotic application was
analyzed. To carry out this thermoplastic materials such as
low density poly ethylene (LDPE), Ethylene vinyl acetate
(EVA), color pigment, calcium carbonate, titanium dioxide
and black carbon have been used as raw material to produce
the sample in sheet form and to achieve comfortable
prosthetic and orthotic application. The method used were
blending, molding, testing of produced materials. Increasing
the content of EVA and decreasing content of LDPE had
effect on compatibility, tensile strength and elongation at
break vice versa. The blended composite with additives have
no significant effect on molding and without additive have
significant effect on molding due to molecular mobility which
leads shrinkage. The maximum tensile strength reached to
10.5Mpa and minimum tensile strength reached 2.8Mpa
and the maximum elongation at break reached 469.8% and
minimum elongation at break 40.2%.The other result are in
between of these ranges, which have better than existing one
has maximum tensile strength of 2.3Mpa and elongation at
break have 265%.The mean value of maximum tear load is
74.4N/mm and minimum tear load have 38.9N/mm which
have better result than existing one has 10.5N/mm. Scanning
electron microscope(SEM) test result showed that specimen
with more filler and less content of EVA become poor in its
morphology and compatibility.
yenealemy@gmail.comMater Sci Nanotechnol 2017, 1:2