Meyer-Lowry equation

In the overriding majority of cases, reactivity ratios are determined from experiments in which composition drift can be neglected. Low-conversion experiments (typically below 1-5% monomer conversion) are used to avoid systematic errors caused by nonconstant comonomer feed composition. There are, however, at least two ways to circumvent problems associated with composition drift and determine reactivity ratios from experiments at higher conversion. The first and most traditional one is the use of the integrated version of the TM, that is, the so-called Meyer-Lowry equation (shown in eqn [40]) ... 

The Meyer-Lowry equation relates overall monomer conversion to mole fractions of the two comonomers during the polymerization. Parameters in this equation are the monomer reactivity ratios (ri and f2). Hence, it is possible to estimate reactivity ratios by using the nonlinear least squares methods. The second method uses numerical integration of the... 

It is also possible to derive reactivity ratios by analyzing the monomer (or polymer) feed composition v.v conversion and solving the integrated form of the Mayo Lewis equation.10 123 The following expression (eq. 44) was derived by Meyer and Lowry 12j... 

Equation 1 was integrated with respect to composition by Meyer and Lowry (9) to the well known equation ... 

In this equation, [Mi] and [M2] refer to the instantaneous monomer concentrations and [Mi°] and [M2°] to the initial concentrations. An alternative form (expressed in terms of total molar conversion of monomer) was later published by Meyer and Lowry (36) ... 

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