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 2
... molecules are formed . As each larger - sized species is formed , it competes with the smaller - sized species for further reaction . Any two molecular species containing X and Y groups can react with each other throughout the reaction ...
... molecules are formed . As each larger - sized species is formed , it competes with the smaller - sized species for further reaction . Any two molecular species containing X and Y groups can react with each other throughout the reaction ...
Page 68
... molecules , i.e. , POTM - n endcapped with MDI , and only less than 10 % of the prepolymer molecules are pre - extended . This is considered to be an acceptable compromise between the objective to prepare model PU elastomers with a soft ...
... molecules , i.e. , POTM - n endcapped with MDI , and only less than 10 % of the prepolymer molecules are pre - extended . This is considered to be an acceptable compromise between the objective to prepare model PU elastomers with a soft ...
Page 254
... molecular strand . ( The actual number of main - chain atoms per molecular sub - unit is denoted g below ; it is a measure of chain stiffness and hence it is somewhat smaller for more flexible molecules and larger for stiffer ones ...
... molecular strand . ( The actual number of main - chain atoms per molecular sub - unit is denoted g below ; it is a measure of chain stiffness and hence it is somewhat smaller for more flexible molecules and larger for stiffer ones ...
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 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