Copolymer equation graphical methods

This equation relates the (instantaneous) copolymer composition with the monomer feed of M and M2. Values for and are usually determined by graphical methods (9,10). Today, with the prevalence of powerful desktop computers, numerical minimisa tion methods are often used (11—14). 

To follow the composition drift of both the comonomer feed and the copolymer formed requires integration of the copolymer equation. This problem is rather complex. The most convenient approach utilizes a numerical or graphical method developed by Skeist [9] for which Eq. (7.18) forms the basis. Consider a system initially containing a total of N moles of the two monomers choose Mi as the monomer in which F) > fi (i.e.. 

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