Chain length weight-average

Solution The number and weight average chain lengths for a self-condensing polymerization are obtained from Equation (13.18) and (13.19) by setting Sab= E ... 

Number- and Weight-Average Chain Length of the Primary Molecules which Belong to the Sol Fraction. 

The exocellulases, however, have the inverse effect since small molecules such as glucose or cellobiose are then cut off, the reducing power rises very quickly, while the weight average chain length remains approximately the same. 

Weight-average chain length after isoamylolysis Whole 85 93-112 72... 

Figure 11. Approach of the two-zone wall temperatures to the optimum and the corresponding variation in weight averaged chain length of the polymer.

To clarify the unique characteristics of the MWD of emulsion polymers, one of the simplest and most common cases [264], where neither chain transfer (Cf=0) nor radical desorption ((5=0) occurs, is considered here. The magnitude of bimolecular termination ( ) is changed with a constant radical entry frequency (c=2xl0 ). Figure 10 shows the calculated number- and weight-average chain lengths and the polydispersity index (PDI= as a func-... 

Fig. 10 Calculated number- and weight-average chain lengths as a function of the average number of radicals in a polymer particle, n, with c=2xl0" and Cf=S=0...

Fig. 21 Calculated development of the weight-average chain length during the model emulsion polymerization...

Figure E7-5.I Moments of live polymer chain lengths (a) number-average chain length (b> weight-average chain length (c) polydispersity.

Average (weight-average) chain length, 499 Average molecular weight, 203, 498 HDPE, 498 A, index, 420... 

Other related quantities that are frequently used are the number average chain length (NACL) and the weight average chain length (WAGE) also represented as and r, respectively, in some texts. The NACL is also simply... 

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