Citation: Yong Peng Lei, Ying De Wang, Yong Cai Song, Yi He Li, Hao Wang, Cheng Deng, Zheng Fang Xie. Facile synthesis of a melt-spinnable polyborazine from asymmetric alkylaminoborazine[J]. Chinese Chemical Letters, ;2010, 21(9): 1079-1082. doi: 10.1016/j.cclet.2010.04.041 shu

Facile synthesis of a melt-spinnable polyborazine from asymmetric alkylaminoborazine

a State Key Laboratory of Advanced Ceramic Fibers & Composites, College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China;
b College of Science, National University of Defense Technology, Changsha 410073, China

Received Date: 15 January 2010

Fund Project: We are grateful to the financial support from the National 863 Program (No.2006AA03A217).We thank Dr.Xingbo Chen and Dr.Bing Wang for discussions.

A novel asymmetric alkylaminoborazine monomer, 2-propylamino-4, 6-bis (methylamino) borazine, was synthesized for the first time, and directly polymerized to give a melt-spinnable polyborazine (PBN). This asymmetric alkylaminoborazine was synthesized by an aminolysis reaction of 2, 4, 6-trichloroborazine (TCB) with different amines under mild conditions. This route turns out to be much cheaper and simpler than the conventional routes. The chemical composition, structure, molecular weights and ceramic yield were investigated by EA, FTIR, NMR, GPC and TG analysis. The PBN exhibits suitable rheological property for melt-spinning, which suggests that it is a potential precursor for BN fibers.
- Asymmetric alkylaminoborazine,
- Polyborazine,
- Melt-spinning,
- BN fibers
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