Desorption from Polymer-Liquid Systems

Fig. 21. A typical example of many time-studies of desorption from liquid saturated poly(Sty-co-DVB) particles enmeshed in PTFE microfibers. The Inset records the number, at> of residual sorbed molecules [in this case CHC13 in (Sty)98(DVB)2] per phenyl group of polymer over the first 10 min of desorption at 23 °C. The main plot records the logarithm of at over the first 70 min of the time-study. The breakpoints in the kinetics of desorption at aj, otg and ag mark sequentially the compositions at incipient elimination of molecules immobilized by adsorption, incipient transition from the rubbery state of the system to the glassy state, and finally completion of this transition as discussed in the text...

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