Pseudo-homopolymer approach,

Pseudo-Homopolymer Approach or Pseudokinetic Rate Constants Method (PKRCM)... 

The solution of Equations 12.38 and 12.39 (which is a linear algebraic system for the p/s) provides the instantaneous radical-type distribution. Once a procedure to explicitly calculate this distribution has been made available, it is possible to apply the pseudo-homopolymer approach by performing the following steps ... 

Mass balance for polymer radicals TABLE 12.5 Pseudokinetic Rate Constants (Pseudo-Homopolymer Approach) ... 

Single concentration approach. An alternative, less rigorous, technique is to enploy kinetic data derived for a sin e chromophore concentration in combination with the unquenched lifetime Any attempt to derive equivalent rate coefficients in homopolymers must of necessity be confined to the less rigorous single concentration approach (2) This inevitably produces a pseudo first order koM terra which is... 

Accurate X-ray diffraction measurements indicate that the dimension of the a axis of the unit cell of PE increases almost linearly with increasing propylene content, whereas the b and c axes practically retain the dimensions found in the PE homopolymer. For propylene content around 25% the a/b ratio approaches 3 / and the unit cell becomes pseudo-hexagonal [30,32-38]. 

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