Structure-property relationships of polyolefin based elastic fibers

摘要

The DOW XLA~(™) fiber is a unique elastic fiber that is olefin-based and designed for durable, comfortable stretch performance with excellent heat and chemical resistance. The elastomeric properties of DOW XLA~(™) elastic fiber result from superimposed molecular networks of flexible polymer chains with three types of molecular junctions: entanglements, crystallites and covalent crosslinks. DOW XLA~(™) elastic fibers are made by melt-spinning. This paper discusses how polyolefin elastomer properties, fiber spinning conditions and fiber crosslinking enable the design of polyolefin elastomer fibers with properties useful in elastic apparel manufacture.