Implementation of Methods to Characterise Encapsulation Behaviour of Intended Implantable Materials

Investigation methods on polymer encapsulation materials were implemented to determine the quality of the biocompatible coating and the adhesion performance of several coating layers. Besides a general view of possible testing applications, investigations of material combinations of silicon carbide, parylene C, medical grade silicones and epoxies were carried out to qualify and quantify the layer performance. These tests were focused on tensile strength methods and shear tests. Further characterisations on the encapsulation quality of the used materials were done by using leakage current measurements. Investigations on leakage current test samples with different material combinations showed promising encapsulation behaviour of medical grade silicones and epoxies as well as silicon carbide/parylene C combination. Apart from the investigations which have been carried out, this paper shows possibilities and suggestions for future measurement methods in the field of encapsulation behaviour