## 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 |

### From inside the book

Results 1-3 of 22

Page 60

f -2 ASFlBSF\\-^') (2.114) § 2.3.3.2 Schuiz-Zimm

with the calculation of network parameters during a crosslinking process of

primary polymer molecules with a so-called

polymers with a polydispersity index between 1 and 1 .5, which was not possible

before. The influence of the width of the molecular weight

network parameters can ...

f -2 ASFlBSF\\-^') (2.114) § 2.3.3.2 Schuiz-Zimm

**distribution**. This section dealswith the calculation of network parameters during a crosslinking process of

primary polymer molecules with a so-called

**Schulz**-**Zimm**molecular weight**distribution**function.'31 This**distribution**enables us to apply the model topolymers with a polydispersity index between 1 and 1 .5, which was not possible

before. The influence of the width of the molecular weight

**distribution**on thenetwork parameters can ...

Page 73

1 03) and (2.106) for a crosslink process of primary polymer molecules with an

accumulated Schulz- Flory distribution of the molecular weights and (2.127) for

crosslinking of primary polymer molecules with a

molecular weights give in accordance: x" „ = lim x" = x_ or M" „ = lim M~ „ = M _ (

A2. 1 ) "-« w,fl " " "« »,T, "'* " V ' The weights average crosslinking index,

commonly used in succeeding chapters, at the gel point is found with the aid of

equations (2.77) ...

1 03) and (2.106) for a crosslink process of primary polymer molecules with an

accumulated Schulz- Flory distribution of the molecular weights and (2.127) for

crosslinking of primary polymer molecules with a

**Schulz**-**Zimm distribution**of themolecular weights give in accordance: x" „ = lim x" = x_ or M" „ = lim M~ „ = M _ (

A2. 1 ) "-« w,fl " " "« »,T, "'* " V ' The weights average crosslinking index,

commonly used in succeeding chapters, at the gel point is found with the aid of

equations (2.77) ...

Page 81

§3.3 Crosslinking of primary polymer molecules with a

of molecular weights.* In a paper by te Nijenhuis it was concluded that networks

are more ideal if the molecular weight distribution is narrower: i.e. at a fixed value

of the equilibrium shear modulus the ideal network fraction is larger when the

molecular weight distribution is narrower.'51 Therefore a comparison was made

between network formation of primary polymer molecules having a

monodisperse, ...

§3.3 Crosslinking of primary polymer molecules with a

**Schulz**-**Zimm distribution**of molecular weights.* In a paper by te Nijenhuis it was concluded that networks

are more ideal if the molecular weight distribution is narrower: i.e. at a fixed value

of the equilibrium shear modulus the ideal network fraction is larger when the

molecular weight distribution is narrower.'51 Therefore a comparison was made

between network formation of primary polymer molecules having a

monodisperse, ...

### What people are saying - Write a review

We haven't found any reviews in the usual places.

### Contents

_t A Rheological and Structural Study of Polymer Networks | 1 |

Modelling of Polymer Networks | 18 |

Simulations of Polymer Networks | 74 |

Copyright | |

3 other sections not shown

### Common terms and phrases

active network chains average crosslinking index average molar mass average molecular weight calculated complex formation enthalpies constant 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 equilibrium shear modulus figure Flory fraction of dangling fraction of ideal frequency high shear rates hypothetical crosslinking process increase kg/mol mijn molecular weight distribution monodisperse distribution network fraction network of polymer network parameters Nijenhuis number and weight number average degree number average molecular number of crosslinks physical network polydispersity index polymer in 1,1,2-trichloroethane polymeric polyvinyl chloride primary polymer molecules relationship rheological measurements Schulz-Flory distribution Schulz-Zimm distribution side chain polymer sol fraction solubility parameter solution of discotic solvent storage modulus strain structure substituting equation temperature tetrafunctional crosslinking total number unit volume values viscoelastic viscosity w/w solution weight average crosslinking weight average molecular yield stress zijn