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Colloidal and Morphological Behavior of Block and Graft Copolymers

Proceedings of an American Chemical Society Symposium held at Chicago, Illinois, September 13–18, 1970

  • Gunther E. Molau

Table of contents

  1. Front Matter
    Pages i-xv
  2. M. Moritani, T. Inoue, M. Motegi, H. Kawai, K. Kato
    Pages 33-46
  3. T. Inoue, M. Moritani, T. Hashimoto, H. Kawai
    Pages 47-61
  4. John C. Saam, F. W. Gordon Fearon
    Pages 75-84
  5. David E. Green, Garret Vanderkooi
    Pages 101-112
  6. Edward F. Cuddihy, Jovan Moacanin, Donald E. Walmsley, Ho Yet Tom
    Pages 113-129
  7. B. Vollmert, W. Schoene
    Pages 145-157
  8. G. M. Estes, R. W. Seymour, S. J. Borchert, S. L. Cooper
    Pages 159-171
  9. Gérard Riess, Jacques Periard, Albert Banderet
    Pages 173-182
  10. M. G. Huguet, T. R. Paxton
    Pages 183-192
  11. Lechoslaw A. Utracki
    Pages 235-245
  12. D. H. Kaelble, E. H. Cirlin, M. Shen
    Pages 295-306
  13. Back Matter
    Pages 323-327

About these proceedings

Introduction

The molecules of block and graft copolymers are molecules of a higher order; they consist of homopolymer subchains which are interconnected by chemical valence bonds. This structural com­ plexity is manifested in the unusual behavior of block and graft copolymers both in solution and in bulk. Many types of interac­ tions are possible in block and graft copolymers in the solid state. Polymer subchains of one molecule can interact with other polymer subchains which may belong to the same molecule or to different molecules. Since polymer chains of chemically different composition are usually incompatible, thermodynamically unfavorable as well as thermodynamically favorable interactions exist in the solid state. In solutions of block and graft copolymers, the sit­ uation becomes even more complex, because interactions between the solvent molecules and the various subchains of the copolymer mole­ cules occur in addition to the interactions between the polymer chains. This multitude of interactions gives rise to a wide spec­ trum of colloidal and morphological properties which have no paral­ lel in less complex polymer systems such as homopolymers or random copolymers. Research on the colloidal and morphological behavior of block and graft copolymers is a relatively new field of endeavor. It started in 1954, when F. M. Merrett fractionated mixtures of grafted na­ tural rubber with the corresponding homopolymers and observed that colloidal sols were formed at certain points during his fractional precipitations.

Keywords

Copolymer Polydimethylsiloxan Polyurethan behavior colloid elastomer molecule polymer rubber

Editors and affiliations

  • Gunther E. Molau
    • 1
  1. 1.Polymer Science Group Physical Research LaboratoryThe Dow Chemical CompanyMidlandUSA

Bibliographic information