Magnetism and Polymerization

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THE graphs below refer to results we have obtained for the magnetic susceptibility of dimethylbutadiene at the commencement of polymerization. Fig. 1 is for the mass susceptibilities of samples of dimethylbutadiene distilled and sealed in nitrogen, and polymerized in the dark by heat at a temperature of 140° C. Fig. 2 is for a similar treatment of dimethylbutadiene distilled and sealed in vacuo. It will be noticed that in the absence of catalyst there is a fall in diamagnetism over the first three hours and that thereafter there is a progressive rise in diamagnetism as is to be expected1.

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  1. 1

    Farquharson, Trans. Faraday Soc., 32, 219 (1936).

  2. 2

    Dostal and Mark, Trans. Faraday Soc., 33, 350 (1933).

  3. 3

    Stoner, "Magnetism and Matter", 477.

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FARQUHARSON, J., ADY, P. Magnetism and Polymerization. Nature 143, 1067–1068 (1939) doi:10.1038/1431067c0

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