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Citation: Dai Yukun. THE AVERAGE MOLECULAR WEIGHT IN A GIVEN INTERVAL OF WESSLAU DISTRIBUTION AND LANSING-KRAEMER DISTRIBUTION[J]. Chinese Journal of Applied Chemistry, ;1986, 3(6): 48-53. shu

THE AVERAGE MOLECULAR WEIGHT IN A GIVEN INTERVAL OF WESSLAU DISTRIBUTION AND LANSING-KRAEMER DISTRIBUTION

Dai Yukun

1.
Changchun Institute of Applied Chemistry, Academia Sinica

Received Date: 16 August 1985

A formula for calculating M in a given interval of Wesslau distribution and Lansing-Kraemer distribution has been derived. It is impossible that the molecular weight of any polymer will distribute over the whole range of 0-∞, hencc a GPC curve always has two boundaries. Therefore a GPC curve should be treated as a normal distribution curve wih its side tails cut out. This paper has shown that three parameters (M₀, β and U_R) are necessary for characterizing a normal GPC curve.The precision of M calculated from GPC curve by Wesslau function is discussed.
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