Structure and properties of the surface layer in modified elastomers

Methods for determining an effective thickness of the surface layer in fluo rinated elastomer compositions using data on their friction behavior and th e fluorine concentration in a modified sample are proposed. These methods w ere used to calculate the thickness of a fluorinated surface layer as a fun ction of the fluorination duration and the type of structural fragments for med upon the modification. The results obtained by various methods are in a satisfactory agreement, Dependence of the surface structure of elastomers on the fluorination duration and the effect of intensive wear of a sample a re considered. The morphology elf a fluorinated layer differs from the init ial one, which, together with differences in chemical structure, results in a lower adhesivity of the elastomer with modified surface and prevents its intensive wear.