Abstract
A Fourier transform infrared (FTIR) spectro-microtomography system was used to conduct a 3-dimensional (3D) structural analysis of a Polyimide (PI) blend/boron nitride (BN) composite film, and the system was optimized by measuring materials with complex shapes, including a micrometer-sized loop and commercial PAN fiber. The results of the 3D reconstruction of the microloop and PAN fiber are in good agreement with optical and chemical images. In addition, the FTIR spectro-microtomography successfully described the phase separation behaviors of the PI blend/BN composite film in a 3D representation. Thereby, we could observe the internal structure of the blend film, which improves the thermal conduction in the out-of-plane direction.
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