High density polyethylene (HOPE) geomembranes have been widely used in landfill, impoundment, sludge ponds, and other geosynthetic applications. HOPE has many advantages when it comes to chemical resistance and UV stability. However, the relatively limited puncture resistance and low extensibility in a multi-axial mode of HOPE could be a disadvantage in applications where these properties are desirable. Linear low density polyethylene (LLDPE) geomembranes exhibit significantly better multi-axial extension properties and index puncture resistance properties than HOPE geomembtanes of the same nominal thickness.
This paper compares the properties of these two materials with supporting laboratory test results. Also presented are summary results from more performance related evaluations.
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