A Rheological and Structural Study of Polymer NetworksContents of this doctoral dissertation include: primary polymer molecules with a mondisperse distribution of the molecular weights, crosslinks of any functionality, primary polymer molecules with a disperse distribution of the molecular weights, the sol fraction, number and weight average degrees of polymerization, Schulz-Zimm distribution, fractions of ideal networks and dangling ends, molar masses between the crosslinks |
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Page 81
... constant at 200 kg / mol . In this way a change in the weight average crosslinking index , 7 , is independent of the polydispersity index and is constant if the number of crosslinks per unit volume , Ner , is kept constant . Finally the ...
... constant at 200 kg / mol . In this way a change in the weight average crosslinking index , 7 , is independent of the polydispersity index and is constant if the number of crosslinks per unit volume , Ner , is kept constant . Finally the ...
Page 86
... constant : M = 40 kg / mol . n a stronger dependence upon the polydispersity index when the number average molecular weight , M ,, is kept constant ( figure 3.8 ) in comparison with the weight average molecular weight , M , being kept ...
... constant : M = 40 kg / mol . n a stronger dependence upon the polydispersity index when the number average molecular weight , M ,, is kept constant ( figure 3.8 ) in comparison with the weight average molecular weight , M , being kept ...
Page 126
... constant . In that case , the dependence of the functionality upon the temperature can be determined . In figure 5.5 , the crosslink functionality is plotted as a function of the temperature at a constant crosslink density , Ner , for ...
... constant . In that case , the dependence of the functionality upon the temperature can be determined . In figure 5.5 , the crosslink functionality is plotted as a function of the temperature at a constant crosslink density , Ner , for ...
Common terms and phrases
1,1,2-trichloroethane active network chains average crosslinking index average molar mass average molecular weight calculated crosslink functionality crosslinked system crosslinks per unit curves cycle rank dangling ends decrease deformation degree of polymerisation discotic side chain discotic side-chain polymers disperse distribution dynamic elastically active network ended mesogens equilibrium shear modulus figure Flory fraction of dangling fraction of ideal Franse frequency high shear rates increase kg/mol mijn molecular weight distribution monodisperse distribution N/m² network of polymer network parameters Nijenhuis number and weight number average degree number average molecular number of crosslinks physical network poly(vinyl chloride polydispersity index polymeric primary polymer molecules relationship rheological measurements Schulz-Flory distribution Schulz-Zimm distribution shear rates side chain polymer sol fraction solubility parameter solution of discotic solvent storage modulus strain structure substituting equation temperature tetrafunctional crosslinking unit volume values viscoelastic viscosity w/w solution w₁ weight average crosslinking weight average degrees weight average molecular yield stress zijn