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Number-average molecular weight defined

The number-average molecular weight defined as the total weight of a polymer sample divided by the total number of molecules, is given by... [Pg.46]

We first find the average molecular weight of the clusters for the distribution function v(j l). The number-average molecular weight defined by... [Pg.240]

The number-average molecular weight of a polymer may be controlled by offsetting the stoichiometry of two dissimilar mutually reactive difunctional monomers. The polymer will have the same endgroup functionality as that of the monomer used in excess. For a generic polymer made from a difunctional monomer AA with A functional groups and an excess of difunctional monomer BB widt B functional groups, r is defined as... [Pg.11]

The number average molecular weight usually is defined by one or the other of the alternative expressions... [Pg.273]

The isothermal reactor is a system consisting of two physical outputs controllable by manipulation of three inputs. Total volumetric flow rate (Q), inlet initiator concentration (I n), and inlet monomer concentration (M. ) are the three system inputs. Number average molecular weight (Pm) and polymer production rate (S) are the chosen outputs which are to be controlled. They are defined by... [Pg.188]

Equation (44) shows the average molecular weight determined from osmometry to be the number average molecular weight as defined by Equation (1.14). [Pg.119]

This same conclusion may also be reached by the following argument. The product nJA, in Equation (43) equals the weight of component i in the solution the total weight of solute in the solution equals L,n,M,. The experimental osmotic pressure depends on and therefore measures the total number of moles of solute The ratio of the total weight to the total number of moles of solute defines the number average molecular weight. [Pg.119]

The variance measures the absolute breadth of the distribution, but properties that depend on the width of the distribution would depend on the width relative to the average. For this reason the dispersion index is defined as the ratio of the weight to the number average molecular weight, which is related to the variance as follows ... [Pg.359]

The number of repeating units between crosslinks, N, a parameter appearing in equation (1), can be simply defined as the jratio of the number average molecular weight between crosslinks, Mc, to the average molecular weight of the clusters, Mq. [Pg.54]

See other pages where Number-average molecular weight defined is mentioned: [Pg.81]    [Pg.273]    [Pg.375]    [Pg.81]    [Pg.273]    [Pg.375]    [Pg.276]    [Pg.315]    [Pg.41]    [Pg.235]    [Pg.471]    [Pg.293]    [Pg.485]    [Pg.742]    [Pg.90]    [Pg.478]    [Pg.500]    [Pg.489]    [Pg.498]    [Pg.268]    [Pg.126]    [Pg.96]    [Pg.40]    [Pg.147]    [Pg.58]    [Pg.60]    [Pg.62]    [Pg.318]    [Pg.89]    [Pg.316]    [Pg.36]    [Pg.249]    [Pg.229]    [Pg.315]    [Pg.157]    [Pg.491]    [Pg.209]    [Pg.471]    [Pg.77]    [Pg.32]    [Pg.495]    [Pg.1005]   


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Average defined

Average molecular weight

Molecular averages

Molecular number

Molecular weight averaging

Molecular weight defined

Molecular weight number

Molecular weight-averaged

Number average molecular weight

Number, defined

Number-averaged molecular weight

Weight, defined

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