Elastomers and Rubber Elasticity

Title Page......Page 1
Half Title Page......Page 3
Copyright......Page 4
ACS Symposium Series......Page 5
FOREWORD......Page 6
PREFACE......Page 7
FOREWORD......Page 9
PdftkEmptyString......Page 0
Requirements of an Elastomer......Page 12
Step Polymerization......Page 15
Chain Polymerization......Page 20
Ring-Opening Polymerization......Page 34
Modification of Elastomers by Chemical Reaction......Page 35
Crosslinking......Page 36
References......Page 42
2 Synthetic Aspects of Crystallizable Elastomers......Page 43
FIRST ROUTE......Page 44
SECOND ROUTE......Page 56
LITERATURE CITED......Page 64
3 Synthesis of Elastomers with Strain-Induced Crystallization......Page 66
LITERATURE CITED......Page 80
4 Synthesis and Properties of Diene Elastomers With Controlled Structure......Page 82
Experimental......Page 83
High Trans BR's by Ba-Li Catalyst Systems......Page 85
High Trans BR's by Ba-Mg-Al Catalyst System......Page 91
Comparison of Strain Induced Crystallization Behavior of NR with High Trans SBR's from Ba-Mg-Al and Ba-Li Catalysts......Page 101
Solution SBR of Controlled Structure for Tire Carcass Compounds......Page 105
Acknowledgments......Page 107
Literature Cited......Page 109
5 Elastomeric Polydiene ABA Triblock Copolymers with Crystalline End Blocks......Page 110
Experimental......Page 112
Results and Discussion......Page 114
Literature Cited......Page 127
6 Effects of Variation of Composition and Block Sequence on Properties of Copolymers Containing Semicrystalline Block(s) Hydrogenated Linear Block Copolymers of Butadiene and Isoprene......Page 128
Introduction......Page 129
Experimental......Page 131
Results and Discussion......Page 133
Conclusions......Page 160
LITERATURE CITED......Page 161
Introduction......Page 164
Monocyclic Olefins......Page 165
Results and Discussion......Page 167
Literature Cited......Page 176
8 Polymers of 1,4-Hexadienes......Page 179
Experimental......Page 181
Results and Discussion......Page 182
Literature Cited......Page 200
9 Structural Factors and Tensile Properties of Ethylene—Propylene—Diene Terpolymers Prepared with Various Catalyst Systems......Page 203
RESULTS AND DISCUSSION......Page 204
Systematic Comparison......Page 205
Effect of Distribution of Double Bonds......Page 210
Vulcanizate Tensile Strength of E-P Copolymers (EPM)......Page 216
LITERATURE CITED......Page 219
10 Quasi-living Carbocationic Polymerization of Alkyl Vinyl Ethers and Block Copolymer Synthesis......Page 220
Experimental Section......Page 221
Results and Discussion......Page 222
Literature Cited......Page 234
11 Polyphosphazene Elastomers: Synthesis, Properties, and Applications......Page 235
Poly(halophosphazenes)......Page 236
Poly(organophosphazenes)......Page 237
Poly(alkoxyphosphazenes) (IV) and Poly(aryloxyphosphazenes) (V).......Page 240
Applications......Page 242
Alternate Synthesis - Future Developments......Page 244
References......Page 246
Introduction......Page 249
Molecular Equation of Motion......Page 250
Continuum Equation of Motion......Page 253
Entanglements......Page 255
Literature Cited......Page 261
13 Small Angle Neutron Scattering from Polymer Networks......Page 262
Neutron Scattering of Gaussian Chains......Page 263
Numerical Results from Scattering Theory......Page 270
Experimental Results......Page 272
Summary......Page 281
Literature Cited......Page 283
14 Molecular Configurations of Elastomers Via Solid State NMR......Page 284
NMR Second Moments and Segment Configurations......Page 285
Rotational Isomeric State Model with Deformation......Page 286
Computer Method......Page 287
Results......Page 289
Literature Cited
......Page 296
15 Crystallization of Stretched Networks and Associated Elasticity......Page 298
Theory......Page 300
Discussion......Page 308
Literature Cited......Page 313
16 Elasticity and Structure of Cross-linked Polymers1: Networks with Comblike Cross-links......Page 314
Theoretical Considerations......Page 315
Experimental......Page 316
Results and Discussion......Page 321
Literature Cited......Page 332
17 Equilibrium Tensile Behavior of Model Silicone Networks of High Junction Functionality......Page 334
Theory......Page 335
Experimental......Page 336
Results and Discussion......Page 338
Conclusions......Page 351
References......Page 352
18 Bimodal Elastomeric Networks......Page 354
Dependence of Properties on Network Structure and Experimental Variables......Page 357
Some Applications......Page 363
Acknowledgements......Page 368
Literature Cited......Page 370
19 Threshold Tear Strength of Some Molecular Networks......Page 372
Experimental Details......Page 373
Experimental Results and Discussion......Page 377
Literature Cited......Page 380
20 Experimental Studies of the Formation and Properties of Polymer Networks......Page 382
Pre-gel Intramolecular Reaction......Page 383
Intramolecular Reaction and Gelation......Page 387
Gel Point and Network Properties......Page 393
Conclusions......Page 402
Literature Cited......Page 405
21 Structure and Elasticity of Loose Step Polyaddition Networks......Page 407
Experimental......Page 408
Calculation of structural parameters......Page 409
Results and Discussion......Page 410
Conclusions......Page 419
Literature Cited......Page 421
22 Elastic Modulus, Network Structure, and UltimateTensile Properties of Single-Phase Polyurethane Elastomers......Page 422
Materials and Experimental Methods......Page 423
Experimental Results......Page 425
Discussion of Results......Page 429
Ultimate Tensile Properties......Page 434
Summary and Conclusions......Page 437
Appendix......Page 438
Literature Cited......Page 439
23 Recent Two-Network Results on the Effect of Chain Entangling in Cross-linked Elastomers......Page 441
Part 1. Two-Network Theory......Page 443
Part 2 . Two-Network Method. Different Types of Strain.......Page 444
Part 3. Stress-Relaxation Two-Network Method......Page 448
Conclusions......Page 451
Literature Cited......Page 453
24 Optical Studies of Rubbers......Page 455
Experimental......Page 456
Theory......Page 459
Results and Discussion......Page 464
Acknowledgment......Page 479
Literature Cited......Page 482
25 Some Comments on Thermoplastic Elastomers......Page 484
Structure and Properties......Page 485
Methods of Synthesis......Page 486
Literature Cited......Page 487
26 Homogeneous and Heterogeneous Rubbery-Rubbery Diblock Copolymers and Polymer Blends: A Unified View......Page 489
Materials......Page 490
Results and Discussion......Page 491
Acknowledgements......Page 498
Literature Cited......Page 499
27 Fundamental Aspects of the Chemical Applications of Cross-linked Polymers......Page 500
Approach......Page 501
Results......Page 503
Conclusions......Page 512
Literature Cited......Page 513
28 Approximative Methods for the Evaluation of Equilibrium Moduli of Relaxing Rubber Networks......Page 515
Experimental......Page 516
Results and Discussion......Page 517
Acknowledgments......Page 528
Literature Cited......Page 530
29 Characterization of Elastomers for Use in Circulatory Assist Devices......Page 531
Materials Characterization......Page 532
Fatigue Tests......Page 533
Uniaxial Fatigue Test Results......Page 534
Ranking of the Candidate Cardiovascular Materials......Page 543
Conclusions......Page 545
Literature Cited......Page 546
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