Block Polymers

1. Front Matter

   Pages i-x

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2. Problems in the Synthesis of Block Polymers by Anionic Mechanism

   • Maurice Morton

   Pages 1-10

3. Block Copolymers of Styrene and Isoprene: Experimental Design and Product Analysis

   • J. Prud’homme, S. Bywater

   Pages 11-17

4. Small Angle X-Ray Scattering Studies of Tri-Block Polymers

   • D. McIntyre, E. Campos-Lopez

   Pages 19-30

5. Relationship of Morphology to Physical Properties of Styrene-Butadiene Block Copolymers

   • G. A. Harpell, C. E. Wilkes, B. F. Goodrich Research

   Pages 31-41

6. Multiple Glass Transitions of Block Polymers. II. Differential Scanning Calorimetry of Styrene-Diene Block Copolymers

   • R. M. Ikeda, M. L. Wallach, R. J. Angelo

   Pages 43-51

7. Studies on Domain Formation Mechanism of A-B Type Block Copolymer from its Solution

   • T. Inoue, T. Soen, T. Hashimoto, H. Kawai

   Pages 53-78

8. Colloidal and Morphological Behavior of Block and Graft Copolymers

   • Gunther E. Molau

   Pages 79-106

9. Dilute Solution Properties of Block Polymers

   • R. Simha, L. A. Utracki

   Pages 107-122

10. Mechanical Properties of Styrene-Isoprene Block Copolymers

    • R. A. Robinson, E. F. T. White

    Pages 123-136

11. Time-Dependent Mechanical Properties of Elastomeric Block Polymers in Large Tensile Deformations

    • Thor L. Smith

    Pages 137-151

12. An Alpha-Methylstyrene Isoprene Block Copolymer

    • Gabriel Karoly

    Pages 153-161

13. Synthesis and Thermal Transition Properties of Styrene — Ethylene Oxide Block Copolymers

    • James J. O’Malley, R. G. Crystal, P. F. Erhardt

    Pages 163-178

14. The Effects of Preferential Solvents on the Phase Separation Morphology of Styrene-Ethylene Oxide Block Copolymers

    • Richard G. Crystal, Peter F. Erhardt, James J. O’Malley

    Pages 179-193

15. Rheological Properties of Styrene-Ethylene Oxide Block Copolymers: Transition and Melt Flow Behavior

    • Peter F. Erhardt, James J. O’Malley, Richard G. Crystal

    Pages 195-211

16. Segmented Polyurethanes: Properties as a Function of Segment Size and Distribution

    • L. L. Harrell Jr.

    Pages 213-224

17. Mechanical and Optical Properties of Block Polymers II. Polyether Urethanes

    • G. M. Estes, D. S. Huh, S. L. Cooper

    Pages 225-236

18. Synthesis and Properties of Siloxane Block Polymers

    • E. E. Bostick

    Pages 237-247

19. An Electron Microscopical Study of the Morphology of Polysiloxane Block Copolymers

    • A. Keith Fritzsche, Fraser P. Price

    Pages 249-261

20. Structure and Properties of Alternating Block Polymers of Dimethylsiloxane and Bisphenol-A Carbonate

    • Roger P. Kambour

    Pages 263-276

Block polymers represent another milestone in the preparation of polymers of controlled structure. Catalysts and polymerization methods that allowed the preparation of polymers in which the stereo- and geometric isomerism of the monomer units could be con­ trolled have indeed been among the major developments in polymer science during the last decade. The synthesis of block polymers, in which the sequence length of the comonomer units can be con­ trolled, portends equally important developments in the science and technology of polymers. The papers collected in this volume cover primarily the pro­ ceedings of the most recent symposium on block polymers, sponsored by the Division of Polymer Chemistry of the American Chemical Society. It was held in New York City during the Society's 158th National Meeting in September, 1969. Additional contributions from selected authors were invited especially for this book to achieve the most up-to-date account of the advances that have been made since the development of the thermoplastic elastomers that first brought into focus this important area of research. The first two papers in this volume draw attention to the various problems that should be considered in the preparation of block polymers of precisely defined structure from styrene and butadiene or isoprene by anionic polymerization. Characterization of block polymers presents many problems and there is a paucity of systematic work in this area. Attention has been given to the di­ lute solution properties of block polymers,however, in one of the papers in this volume.

• polymer
• polymer chemistry
• polymer science
• polymerization
• synthesis

• Materials Research and Technical Services Research and Development Center, The General Tire and Rubber Company, Akron, USA

  S. L. Aggarwal

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