Synthesis and Characterization of 3-Difluoroaminomethyl-3-methyl Oxetane and its Homopolymer

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3-Difluoroaminomethyl-3-methyl oxetane (DFAMO) was synthesized via the process of bromination, cyclization, ammonification, amino protection and fluorination with a total yield of 43% and GC purity of 96%. DFAMO was characterized by 1H, 19F, 13C nuclear magnetic resonance (NMR), fourier transform infra red (FTIR) and element analysis. The homopolymer of 3-difluoroaminomethyl-3-methyloxetane (PDFAMO), considered as energetic binder to be used in solid propellants and polymer bonded explosives, with a number-average molecular weight (Mn) about 3000 was synthesized via cationic ring-opening polymerization using boron trifluoride etherate (BTFE) as Lewis acid catalyst, 1,4-butanediol (BDO) as initiator and 1,2-dichloroethane (DCE) as aprotic solvent. The effects of BTFE/BDO feeding molar ratio and temperature of the polymerization reaction were discussed. The structure of PDFAMO was characterized by 1H and 19F NMR.

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Edited by:

Fangping Zhang

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28-32

Citation:

H. Li et al., "Synthesis and Characterization of 3-Difluoroaminomethyl-3-methyl Oxetane and its Homopolymer", Applied Mechanics and Materials, Vol. 628, pp. 28-32, 2014

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September 2014

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