Polymer Networks: Principles of Their Formation, Structure and PropertiesR.F. Stepto Written by an international team of authors with a strong emphasis on the underlying chemistry, this book forms a timely, concise, and accessible evaluation of the fundamentals of polymer network formation, structure, and properties, and how these three aspects are interrelated. |
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Page 71
... Cyclization As in the case of network formation using reactants of low functionalities , described in Chapter 2 , cyclization competes with intermolecular branching . Generally , cyclization is expected to occur somewhat more frequently ...
... Cyclization As in the case of network formation using reactants of low functionalities , described in Chapter 2 , cyclization competes with intermolecular branching . Generally , cyclization is expected to occur somewhat more frequently ...
Page 75
... Cyclization is much more important : i.e. propagation , transfer and ter- mination reactions can proceed intermolecularly and intramolecularly . 3. The effective reactivities of the pendant double bonds can change , due to chemical ...
... Cyclization is much more important : i.e. propagation , transfer and ter- mination reactions can proceed intermolecularly and intramolecularly . 3. The effective reactivities of the pendant double bonds can change , due to chemical ...
Page 76
... ( cyclization ) can always proceed if the ring closure is allowed by chain flexibility , so the first crosslinks formed are almost exclusively intramolecular . Rings of various sizes are formed , with the smallest one being usually the ...
... ( cyclization ) can always proceed if the ring closure is allowed by chain flexibility , so the first crosslinks formed are almost exclusively intramolecular . Rings of various sizes are formed , with the smallest one being usually the ...
Contents
Contents | 1 |
Nonlinear polymerization gelation and network formation | 14 |
4 | 40 |
Copyright | |
14 other sections not shown
Common terms and phrases
behaviour block copolymers Chapter Chem chemical components composition concentration constant conversion copolymerization crosslinking CTT diagram cure curve cyclization decrease deformation degree of polymerization dependence distribution Dušek EANCS Eichinger elastomers endlinking entanglements equation equilibrium Erman experimental Flory formed Frisch gel point gelation hard segments hard-segment content Ilavský increase initial injection moulding intramolecular reaction junction points kinetics linear Macosko Macromol Macromolecules mechanical microphase separation modulus molar mass molecular weight molecules monomer mould network chains network formation network materials network structure network-forming occur parameter phase separation Phys polymer networks Polymer Sci polyurethane predicted primary chains properties PUr-DETDA RA₂ ratio reactants reacted reactive groups RIM copolymer RIM materials ring structures rubber sample shear modulus shown in Figure soft segments soft-segment spinodal spinodal decomposition Stepto stress-strain Tcure temperature tensile thermodynamic thermosetting triol units values versus viscoelastic viscosity vitrification vitrification region volume fraction