The bending behaviour of linear low density polyethylene monofilaments

Abstract

Abstract: Linear Low Density Polyethylene (LLDPE) has been successfully used in artificial turf as a pile layer as it meets the initial requirements mentioned in the FIFA Quality Concept for football turf. This paper discusses a critical appraisal of the factors affecting on the bending behaviour of uniaxially oriented monofilaments prepared from LLDPE. The focus is to characterise the bending behaviour by studying it in function of the thickness of the monofilaments and the orientation. The monofilaments of LLDPE were characterized by combining the tensile testing and bending behaviour on dynamic and static bending mode. Beside this monofilaments were characterized for micro-structural details such as amorphous phase orientation, degree of crystallinity and intermediate phase structure. It was found that the relationship between bending behaviour and thickness is very much dependent on the degree of the orientation (DR) of monofilaments. There are remarkable differences between less and high oriented filaments samples