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Molar mass distribution
The weight average molecular weight is a way of describing the molecular weight of a polymer. Polymer ...
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Now that you have a general idea of what molecular weight means for a polymer, you can calculate the number average and weight average molecular weights ...
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So we have to talk about average molecular weights when we talk about polymers. And we're not going to stop there. The average can be calculated in different ...
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but rather of the distribution of molecular weight, P(M), or of the average molecular ... function of the average molecular weight, 〈M〉, and insensitive to other the ...
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of molecular weight averages for a polymer, e.g., weight-average (Mw), ... And, this leads us to the number-average molecular weight, weight-average molecular ...
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The probability factor in a weight-average emphasizes the mass of the molecules so that the heavier molecules are ...
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and the weight-average molecular weight defined by. In the above equations, M, is the molecular weight of frac- tion z, n, is the number of moles of fraction i, and ...
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Among many possible ways of reporting averages, three are commonly used: the number average, weight average, and z-average molecular weights.
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Indeed, the number-average molecular weight is given by the formula. M n is the arithmetic mean, representing the total weight of the molecules present divided ...
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HW 9. Problem 14.5 a. To Find: (a) The number-average molecular weight. (b) The weight-average molecular weight. (c) The degree of polymerization ...
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