Average polymer

Figure 3. Porosity measurements on a microscopic scale for a small (2 cm X 2 cm X 30 urn) thin section of sandstone impregnated with fluorophor-doped polymer. Average porosity - 16.3% range of porosities - 1.8-42%.

SEC-GC-FID, according to Figure 7.40, has been used to carry out the simultaneous determination of the polymer average molecular masses and molar mass distribution and the concentration of additives [984]. The effluent was split and adsorbed on PTV packing material before GC analysis. The choice of PTV... 

When PGA or poly-a,L-lysine was irradiated with cobalt-60 7-rays in neutral 1% aqueous solution in vacuum, the viscosity fell rapidly with dose (Figure 2). This effect suggests that the molecular weight of the polymer is decreased, and confirmation was obtained for PGA by gel filtration on Sephadex G75. Whereas the unirradiated polymer (average molecular... 

Effect of Polymer Average Molecular Weighty Molecular Weight Distributioriy and Branching... 

Papi [Pfizer], TM for a series of methylene diphenyl diisocyanate urethane polymers. Average viscosity 250 cP at 25C. 

Some possible answers to the foregoing question occur. Perhaps, in spite of our efforts to dry Polymer 20 granules some tightly absorbed water remained in the polymer. This moisture would then be on site to react with the isocyanate-terminated polymer chain ends as they are generated by the thermal/shear-induced cleavage of polymer urethane bonds. Such a process would reduce polymer average molecular weight, and thus melt viscosity, until the water is used up or has escaped. 

Poly( -chlorostyrene) 9-vinylanthracene co-polymer (average of two samples) toluene 6.6... 

Mark-Kuhn-Houwink equation, derived on the basis of large experimental material analysis, obtained wide spreading for polymers average viscosity molecular weight determination by their solutions intrinsic viscosity [r ] measured values [1]. This equation has a look like ... 

Because the amount of polymer samples available is usually not limited, it is possible to underestimate the sensitivity issue in MALDI polymer characterization. In reality, the use of a MS instrument that provides high sensitivity and a wide dynamic range of ion detection is pivotal to the success of polymer analysis. This is true not only for the measurement of polymer average mass, but also for the determination of polymer composition [110, 113-121]. With limited detection... 

The formulation of aU three layers (compact inner layer, foamed or compact intermediate layer, and compact outer layer) must take into account that because of the length of feedblock, the polymer average residence times are much longer in coextrusion than in conventional pipe extrusion. Thus, thermal stability has to be increased. 

The conversion, the energy generation profile, and the monomer and initiator moles profiles, as well as the polymer average molecular weights, are computed and plotted. We produce here two files a script that is used to provide the data for the ODE statement and a function that will contain the differential equations and the dehnitions of the different parameters needed. 

Total mass of polymer Average mass of a particle... 

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