The structures of polyethylene polyamines, including the composition distribution and end groups, were studies by fourier transform-ion cyclotron resonance resonance mass spectrometry (FT-ICRMS). It is found that ther...The structures of polyethylene polyamines, including the composition distribution and end groups, were studies by fourier transform-ion cyclotron resonance resonance mass spectrometry (FT-ICRMS). It is found that there are not only amine end groups but also ethylene end groups in the polyamines. The formation of ethylene end groups could be caused by side reactions in the synthesis.展开更多
文摘The structures of polyethylene polyamines, including the composition distribution and end groups, were studies by fourier transform-ion cyclotron resonance resonance mass spectrometry (FT-ICRMS). It is found that there are not only amine end groups but also ethylene end groups in the polyamines. The formation of ethylene end groups could be caused by side reactions in the synthesis.