Correlation of Mesophase Properties with Molecular Structures of Pitches from Different Sources
Mengyao Qi,
Sheng Huang,
Nurlanbek Baker
et al.
Abstract:In this paper, the molecular structures of vacuum residue (VR), coal liquefaction pitch (CLP), and coal tar pitch (CTP) are presented in detail, in order to explore their connection with mesophase properties. It is found that the H/C atom ratio of VR is as high as 1.32 because of abundant aliphatic structures. Its average aromatic ring number (R A ) is only 3.88, and some of its internal aromatic rings are connected by bridged bonds. The mesophase pitch from VR (MP-VR) has a low mesophase content of 28.28−40.7… Show more
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