The performances of isotactic polypropylene (iPP) have always been related to its crystal morphology and structure. In this work, -transcrystallization (-TC) was obtained by constructing iPP and -nucleated iPP (-iPP) multilayered structures. By changing the number of layers, the -TC content in layered samples was controlled. During the isothermal crystallization at 130 degrees C, the -nucleating agents induced -spherulites in -iPP layers, then the -nucleus at the interface induced the formation of -TC which grew vertical to the interface in iPP layers. Compared with traditional blending sample which had only -spherulites, the crystallization rate, and Avrami exponent of -crystal in layered samples decreased with increasing of the -TC content due to the longer induction nucleation time and two-dimensional heterogeneous growth mode of -TC during isothermal crystallization at 130 degrees C. Similarly, the crystallization rate of -crystals decreased with the increase of -TC content during nonisothermal crystallization. In addition, the layered sample with high content of -TC showed good toughness, due to the special morphology of -TC. This study provided a method to fabricate -TC during melt processing, and promoting the application of iPP materials with high-content of -TC. POLYM. ENG. SCI., 58:1791-1799, 2018. (c) 2017 Society of Plastics Engineers