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 88
... increase also . §3.3.4 Crosslink functionality in poly ( vinyl chloride ) gels . W It is known that the ... increases from 10 to 700 for equilibrium shear moduli increasing from 100 to 1x105 N / m2 and that 88 88.
... increase also . §3.3.4 Crosslink functionality in poly ( vinyl chloride ) gels . W It is known that the ... increases from 10 to 700 for equilibrium shear moduli increasing from 100 to 1x105 N / m2 and that 88 88.
Page 106
... increase of the strain rate causes this additional stress to increase also . [ 18 ] σ add ( N / m2 ) 0.6 0.5 0.4 0.3 320 0.2 O D Δ 25 ° C 35 ° C 0.1 0.0 0 20 40 60 80 100 120 Yo ( s ́1 ) Figure 4.9 Additional stress values as a function ...
... increase of the strain rate causes this additional stress to increase also . [ 18 ] σ add ( N / m2 ) 0.6 0.5 0.4 0.3 320 0.2 O D Δ 25 ° C 35 ° C 0.1 0.0 0 20 40 60 80 100 120 Yo ( s ́1 ) Figure 4.9 Additional stress values as a function ...
Page 126
... increase in the average functionality of the crosslinks as a function of decreasing temperature is observed in figure 5.5 . The increase of the functionality for a temperature decrease of 15 ° C is at most 3 % . However , this increase ...
... increase in the average functionality of the crosslinks as a function of decreasing temperature is observed in figure 5.5 . The increase of the functionality for a temperature decrease of 15 ° C is at most 3 % . However , this increase ...
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/mē 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