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Geometric chain length distribution

FIGURE 14 Geometric chain length distribution at different conversions. (See insert for color representation of the figure.)... [Pg.16]

FIGURE 1.4 Geometric chain length distribution at different FIGURE 1.5 Geometric molecular weight distribution at different... [Pg.474]

Figure 1.4 shows the chain length distribution for a geometric distribution for different values of p, while Figure 1.5 shows the corresponding molecular weight distribution (without taking into account the mass loss due to the condensate). [Pg.16]

While the entire chain length distribution is shown in Figure 1.4 and Figure 1.5, polymer size is usually characterized by the moments of the distribution, as described in Section 1.1.2. From the results computed for the geometric chain distribution, one can solve for the moments in a straightforward way. By combining Equation 1.1 with 1.74, an expression for each of the first three moments can be written as follows ... [Pg.16]

The shape of the Schulz-Flory distribution and the chain length of the a-olefins are controlled by the geometric chain-growth factor K, defined as K = n(C +2)/ n(C ) (see Figure 2). For the economy of the whole process it is very important that the /f-factor can easily be adjusted by varying the catalyst composition. Usually the value is between 0.75 and 0.80. [Pg.246]

The shape of the Schulz-Flory distribution and the chain length of the a-al-kenes are controlled by the geometric chain-growth factor K, defined as K = n(C +2)ln C ) (Figure 1). [Pg.641]

The chain sequence length distribution of DNA can be represented using the geometric distribution. The mean and variance of the geometric distribution would be expected to depend on the mechanism of formation of polynucleotide sequences. For instance, a terpolymer formed hy free radical polymerization can be modeled with respect to the sequence distribution as follows. Let three termonomers enter a long copolymer chain atMj, M2, and M3 concentrations with reactivity ratios r 2, 21, r23, r 2, 13, 31- Assume that the bond formation order does not matter in the rate, that is,... [Pg.249]

The aforementioned expression is the geometric distribution or the Flory-Schulz distribution. The results can be illustrated by plotting the mole fraction of chain length for different values of conversion, p. [Pg.16]

The sequence length of a single base in the polynucleotide chain can be given by a geometric distribution. [Pg.251]


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See also in sourсe #XX -- [ Pg.16 ]




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Length distribution

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