Trapping, factors

The Ferry trapping factor is therefore (1 — 2v0/vc)2. Unfortunately, the simple extrapolation procedure of Kraus (286) can no longer be applied, but numerical search techniques should still suffice to determine Me. 

Langley (255) has developed a refined definition of the Ferry trapping factor, and he also accounts theoretically for effects of the primary chain distribution and... 

The trapping factor Te increases as the cross-link density increases, whereas ne and Ge—as terms that are specific to the polymer—are to a great extent independent of cross-link density. For the cross-link and tube constraint moduli, the following relations to molecular network parameters... 

In practice, the trap-filled limit is difficult to observe as it is often preceded by electrical breakdown of the sample. The transition from the linear to square law (Child s Law) dependence of current on voltage is usually not sharply defined. Thus samples may display an intermediate power law over a considerable voltage range. This, and the uncertainty of the trapping factor, render the measurement of current-voltage characteristics unsuitable for tire determination of carrier mobility. 

Also the trapping factor, g, in Langley-Graessley s theory of trapped... 

Transition, isothermal to adiabatic 138f. Trapped entanglement 36, 42 Trapping factor 36 Triads 36... 

The entanglement trapping factor changes from zero at the gel point to unity for fully developed networks that have very few defects (formed by... 

Langley used the mean-field percolation model to derive the entanglement trapping factor, assuming that the probability of entanglement between two network strands is proportional to the square of their concentration. The probability Vi that a randomly chosen monomer in a network strand is... 

Langley trapping factor) is the fraction of trapped entanglements that contribute to the modulus, and G is the plateau modulus related to the molecular weight Me between entanglement by the expression... 

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