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Fibre motion model

To fix our ideas consider again the simple model for the polethylene fibre with full orientation, but where there is rotation of the chain around its axis (at a frequency greater than the line width in Hz, i.e. lO -lO Hz for proton resonance with Hq 10 kg). The length of the internuclear vector r is unchanged by the motion and we have for the proton pair interaction only ... [Pg.233]

The second model is called the free volume model, where dye diffusion takes place in the void volume in the non-crystalline regions of the fibres. This void volume is formed by the segmental motion of polymer chains, a process that commences at the glass transition temperature of the fibre. The shift in the free volume in the non-ciystalline regions promotes the diffusion of molecules that are sufficiently small. ... [Pg.45]

See other pages where Fibre motion model is mentioned: [Pg.718]    [Pg.111]    [Pg.231]    [Pg.98]    [Pg.78]    [Pg.163]    [Pg.78]    [Pg.486]    [Pg.380]    [Pg.192]    [Pg.274]    [Pg.300]    [Pg.384]    [Pg.268]    [Pg.311]    [Pg.274]    [Pg.27]   
See also in sourсe #XX -- [ Pg.201 ]



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