Dilute solutions of SGPLCs

A typical Zimm plot is given (M = 540 000gmol ) of PMAC  

The optical constant depends on the radiation source employed. To calculate this constant for LS measurements the refractive index increment (dn/dc) j has to be determined, for the analysis of the SAXS and SANS measurements the partial specific volume of the polymer in solution must be known. With the exception of [41] the few results published on SGPLCs in solution concerning these molecular constants are in relatively good agreement, as shown in Table 5.4. 

Two results concerning the partial specific volumes of SGPLCs must be emphasized. In comparison with the specific volumes of an homologous series of polyalkylmethacrylates (for instance at T =20°C 0.920 cm g (polybutylmethacrylate/toluene), 

The second result that should be mentioned is the agreement with the known properties of conventional polymers, that the partial specific volume of a polymer increases with increasing side group length (the 

In spite of the errors in absolute values resulting from the SEC method using an incorrect calibration, the analysis of elution diagrams shows, for example for the polydispersity index E = good 

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