The Effect Of Blending Of Linear Low –Density Polyethylene On Mechanical Properties Of High Density – Polyethylene
Engineering and Technology Journal,
2009, Volume 27, Issue 3, Pages 418-424
Abstract
High – density polyethylene is an important commercial polymer and it is widelyused for different engineering applications. In the present work, polymer blends were
fabricated by mixing two types of polyethylene, high – density polyethylene was mixed
with different weight percent of linear – low – density polyethylene using two – roll
mill, the mixing machine was operated at a temperature of 135oC.
A series of standard tests (destructive), tensile, impact, hardness, and compression
were carried out on the prepared samples it was found that the addition of linear – low –
density polyethylene to the high – density polyethylene leads to decrease in the modulus
of elasticity, tensile strength, tensile strength at break and increase in the % elongation at
break.
For the impact test it was found that the addition of linear – low – density
polyethylene caused an increase in the impact strength of the material, the polymer blend
with 45 % wt of linear – low – density polyethylene gave the highest value of impact
strength.
On the other hand the hardness test was carried out and it was found that the addition
of linear – low – density polyethylene leads to decrease the hardness of the polymer
blends. Therefore, the neat high – density polyethylene gave the highest hardness value.
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