![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
Rolltrusion is a single step solid state deformation process that has been successfully applied to many polymers and copolymers to produce unique properties. Property enhancement results in 3D mechanically improved behavior over the original workpiece without the need for cross-plying. Processing-structure-property relationships have been established. Rolltruded polymers are transparent since they are free of spherulites, rather they are comprised of anisotropic small crystallites formed from spherulites. The crystallites are crystallographically arrayed and interconnected by tie molecules that provide property improvement in three mutually perpendicular directions. Thin films have also been made and these may be used as membranes for the separation of small molecules. Permselective membranes so formed are pinhole free and very strong with a regulated 3D morphology. The rolltrusion technique is not restricted by the solubility constraints inherent in preparing solvent based thin films. Consequently, engineering plastics may be made into membranes without regard for their limited solvent solubility. Rolltrusion has now been established as a universal procedure for property enhancement of commercial and engineering polymers.
Key Words: