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 43
... of macroscopic properties of a network this division is very useful , as it appears to be possible to assign certain properties to a specific fraction . In this section a basic equation for the fractions of ideal network and dangling ends ...
... of macroscopic properties of a network this division is very useful , as it appears to be possible to assign certain properties to a specific fraction . In this section a basic equation for the fractions of ideal network and dangling ends ...
Page 78
... fraction ( left ) and the fraction of dangling free ends ( right ) versus the weight fraction of the lower molecular weight component , wi , for different values of the elastic e e − ) ; G2 = 125 N / m2 ( modulus of the network ; G ...
... fraction ( left ) and the fraction of dangling free ends ( right ) versus the weight fraction of the lower molecular weight component , wi , for different values of the elastic e e − ) ; G2 = 125 N / m2 ( modulus of the network ; G ...
Page 82
... fractions of dangling ends , w , and ideal network , wm , have been calculated using equations ( 2.138 ) and ( 2.137 ) , respectively , and are presented in figures 3.5b and c . From these figures it appears of course that the sol fraction ...
... fractions of dangling ends , w , and ideal network , wm , have been calculated using equations ( 2.138 ) and ( 2.137 ) , respectively , and are presented in figures 3.5b and c . From these figures it appears of course that the sol fraction ...
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