Advances in Elastomers and Rubber ElasticityJoginder Lal, James E. Mark The present book is a sequel to "Elastomers and Rubber Elasticity," edited by J.E. Mark and J. Lal and published by the American Chemical Society in 1982. It is also based on papers presented at an ACS Symposium, sponsored by the Division of Polymer Chemistry, Inc., in this case one held in Chicago in September of 1985. The keynote speaker was to have been Pro fessor Paul J. Flory, and his untimely death just prior to the symposium was a tremendous loss to all of polymer science, in particular to those in terested in elastomeric materials. It is to his memory that this book is dedicated. There has been a great deal of progress in preparing and studying elas tomers since the preceding symposium, which was in 1981. In the case of the synthesis and curing of elastomers, much of the background necessary to an appreciation of these advances is given in the first, introductory chapter. |
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Results 1-3 of 55
Page 39
... trans cis The charge on the anion is spread over the end three carbons , particularly the y and a positions . The ... trans form of the chain end , and it seems likely that these aggregates must dissociate to propagate . Cis / trans ...
... trans cis The charge on the anion is spread over the end three carbons , particularly the y and a positions . The ... trans form of the chain end , and it seems likely that these aggregates must dissociate to propagate . Cis / trans ...
Page 44
... trans forms of the active chain end which is more difficult with UV spectra . But because of the much slower time scale of NMR spectra , averaging of signals between the various associates often occurs in these rapidly equilibrating ...
... trans forms of the active chain end which is more difficult with UV spectra . But because of the much slower time scale of NMR spectra , averaging of signals between the various associates often occurs in these rapidly equilibrating ...
Page 216
... trans - 1,4 units . The trans - 1,4 units could have been formed by isomerization during the repeated hydrogenation steps . 13C- NMR also indicated that the cis - 1,4 units were easier to hydrogenate than the trans - 1,4 units . The 13C ...
... trans - 1,4 units . The trans - 1,4 units could have been formed by isomerization during the repeated hydrogenation steps . 13C- NMR also indicated that the cis - 1,4 units were easier to hydrogenate than the trans - 1,4 units . The 13C ...
Contents
Introduction to Synthesis of Elastomers | 1 |
Structure and Properties of Tire Rubbers Prepared | 17 |
Polymer and Chain End Structure in Anionic Diene | 37 |
Copyright | |
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affine anionic antioxidant behavior block polymers butadiene calculated catalyst CHâ‚‚ chain end CHDI Chem chemical crosslinking crystalline crystallites crystallization curing curves cyclohexane deformation density diene dynamic mechanical effect elasticity elongation end block entanglements equation equilibrium experimental fatigue fraction function glass transition temperature groups hard segment content hard segment length higher hydrogenated hydrosilylation increase initiator intramolecular reaction isoprene Macromolecules measurements melting temperature microstructure modulus molecular weight molecules monodisperse monomer observed obtained oligomers orientation P. J. Flory PDMS peak phantom network phase Phys polybutadiene polyether polyisoprene polymerization polystyrene polyurethane-ureas polyurethanes prepared prepolymer PTMO rubber sample scattering segment length distribution shown in Figure soft segment solvent spectra strain stress stress-strain structure styrene swollen synthesis Table theory thermal thermoplastic thermoplastic elastomers tion toluene triblock copolymer uniaxial values vinyl content vulcanizates