Surface excess magnetization

Fig. 3.2. Monomer burette for photopolymerisable monomers. is a reservoir containing monomer over a drying agent, e.g. CaH, with magnetic stirrer. The monomer was run into A through D which was then sealed. C is a cold finger to be filled with a mush at just above the freezing point of the liquid in A, so that the condensate drips into the burette B. Any excess is returned to A via which, like and T, should be a PTFE tap. The rig should be covered in black cloth up to and 7. The latter is essential, because in its absence the monomer in A will polymerise on all the glass surfaces, even if A is kept dark. The reactor in which the monomer is required, or any phials to be filled, are attached below T. ...

The room temperature 129Xe spectra of the three carbon blacks are shown in Figure 12.17 and, surprisingly, the line width of these Xe resonances is much smaller than that of Xe in the composites. Although it is known that magnetic impurities and susceptibility effects excessively broaden the 13C line width of carbon blacks, these effects clearly are not as serious for Xe adsorbed at the outer and inner surfaces of the carbon black aggregates [20]. 

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