Medical polymers shrinkage

Modifications of the surface properties ofman-made fibers play a dominant role in several end-uses. Via a variety of application processes it is possible to treat manmade fibers with fluorine gas. The electronegativity of flouorine is 4.0eV the highest of all elements. In particular, the siuface activity of yams can be increased considerably by incorporating fluorine atoms. As part of this investigation some polymers and fiber types for diverse end-uses were tested (Table 17.1). All end-use applications for these yams have important surface function requirements, e.g., for tire yams the adhesion to mbber is very important while for tarpaulins it is the adhesion to PVC. Textile and medical applications with different end-use characteristics were also considered. The modifications attempted to this investigations did not influence other properties such as tenacity, elongation, or shrinkage. 

---