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 41
Page 114
... soft segment blocks crystallize only when their molecular weight is in excess of 1000 , although higher hard / soft segment mixing present in these systems may also prevent the crystallization of the soft segments . The 8 and ...
... soft segment blocks crystallize only when their molecular weight is in excess of 1000 , although higher hard / soft segment mixing present in these systems may also prevent the crystallization of the soft segments . The 8 and ...
Page 117
... segment content . For PEUU based on the polyether glycol 2000 molecular weight , the soft segment transition occurs at -75 ° C and is followed by an in situ crystallization exotherm near -40 ° C and melting endotherm at about 10 ° c ...
... segment content . For PEUU based on the polyether glycol 2000 molecular weight , the soft segment transition occurs at -75 ° C and is followed by an in situ crystallization exotherm near -40 ° C and melting endotherm at about 10 ° c ...
Page 119
... soft segments . Faster crystallization could also occur due to the presence of less hard segment impurities in the soft segment matrix . When significant amounts of hard segment impurities are present in the matrix , as may be the case ...
... soft segments . Faster crystallization could also occur due to the presence of less hard segment impurities in the soft segment matrix . When significant amounts of hard segment impurities are present in the matrix , as may be the case ...
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