Rubber compounds containing natural rubber (NR) filled with carbon black were investigated with the help of the thermomechanical method according to the procedure described in a previous article (Jurkowska et al. J Appl Polym Sci, in press). It was stated that NR filled with carbon black has two amorphous blocks differing in the transition temperatures and one pseudo-crystalline structure. A ratio of these morphology structures changes during mixing with carbon black depending on the carbon black content and mixing time. A crystalline structure has two or three temperatures characterizing the beginning of melting and the beginning of flow. This evidences its complex architecture. Vulcanized rubber of NR mixed with butadiene rubber (BR) in a ratio of 70/30, filled with carbon black, has two-block amorphous structure without a pseudo-crystalline structure. A dynamics of forming molecular and topological structures of vulcanizates depends on carbon black content.