Open AccessPreparation and Characterization of Polyimide/TiO2 Nano-composites for Non-lethal Weapon
Author(s) -
Xiaoping Chen
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1759/1/012005
Subject(s) - pyromellitic dianhydride , polyimide , materials science , scanning electron microscope , fourier transform infrared spectroscopy , nano , composite material , polymerization , diamine , polymer , in situ polymerization , chemical engineering , polymer chemistry , layer (electronics) , engineering
A series of Polyimide/TiO 2 (PI/TiO 2 ) nano-composites were successfully prepared by incorporating different nano-sized TiO 2 contents into PI which derived from pyromellitic dianhydride (PMDA) and a flexible diamine 4,4-bis(3-aminophenoxy)biphenyl (4,3-BAPOBP) via in-situ polymerization and a thermal imidization method. The micromorphology, chemical structure of samples were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR). The SEM results show that when the content of nano-TiO 2 is lower, the nano-TiO 2 can be distributed uniformly in the matrix by the method of this experiment scheme, and signs of agglomeration have begun to appear when the TiO 2 content is 12 wt.%. XRD patterns reveal the crystal structure of TiO 2 remains unchanged and stable after being doped into PI matrix, and the TiO 2 nano-particles have good compatibility with PI matrix