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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Page 118
... lower glass transition also promotes a lower soft segment crystallization temperature ( Tc ) . The melting endotherms in these copolymers are observed to be shifted to lower temperatures as the hard segment content is decreased . This ...
... lower glass transition also promotes a lower soft segment crystallization temperature ( Tc ) . The melting endotherms in these copolymers are observed to be shifted to lower temperatures as the hard segment content is decreased . This ...
Page 119
... lower ( near -75 ° C ) as compared to those of copolymers with lower soft segment molecular weight . This indicates that the mixing of the hard and soft segments is minimal when higher molecular weight polyethers are employed and that ...
... lower ( near -75 ° C ) as compared to those of copolymers with lower soft segment molecular weight . This indicates that the mixing of the hard and soft segments is minimal when higher molecular weight polyethers are employed and that ...
Page 122
... lower segment molecular weight materials suggesting a larger distribution of domain sizes and / or interdomain ... lower and the position of the shoulder is also not well defined . The mixing of the two different segments apparently ...
... lower segment molecular weight materials suggesting a larger distribution of domain sizes and / or interdomain ... lower and the position of the shoulder is also not well defined . The mixing of the two different segments apparently ...
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 CH₂ chain end CHDI Chem chemical crosslinking crystalline crystallites crystallization curing curves cyclohexane deformation density diene dynamic mechanical effect elongation end block entanglements equation equilibrium experimental fatigue formation 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 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 trans triblock copolymer uniaxial values vinyl content viscoelastic vulcanizates