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Stereospecific polymerization of isoprene /
Stereospecific Polymerization of Isoprene, a doctoral dissertation by Dr. Elena Ceausescu, is a study of the synthesis of cis-l, 4-polyisoprene rubber, an elastomer of synthetic rubber whose structure and properties are similar to that of natural rubber. This elastomer is primarily used in the manuf...
| Clasificación: | Libro Electrónico |
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| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés Romanian |
| Publicado: |
Oxford [Oxfordshire] ; New York :
Pergamon,
1983.
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| Edición: | First English edition. |
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Front Cover; Stereospecific Polymerization of Isoprene; Copyright Page; Foreword; Preface; Table of Contents; PART I: DISSERTATION FOR THE DEGREE OF DOCTOR OF CHEMICAL ENGINEERING; LITERATURE DATA; Introduction; Chapter I. General comments on stereospecific polymerization; 1. Research prior to the discovery of stereospecific polymerization; 2. Structural characteristics; 3. The main types of stereoregular polymers; 4. General methods for the synthesis of stereoregular polymers; Chapter II. Stereospecific catalysts; A. Heterogeneous catalyst systems; B. Homogeneous catalyst systems.
- C. Catalysts effective in polar mediaChapter III. Mechanisms of stereospecificpolymerization; A. Free radical mechanisms; B. Ionic mechanisms; C. Mechanisms of polymerization using Ziegler-Natta catalystsystems; Chapter IV. Kinetics of stereospecificpolymerization; EXPERIMENTAL PART; Chapter I. Purification of the reagents usedin the stereospecific polymerizationof isoprene; A. Purification of isoprene; B. Solvent purification; C. Purification of catalyst components; D. Purification of nitrogen.
- Chapter II. Research on the stereospecificpolymerization of isoprene withheterogeneous catalyst systemsof the A1R3 + TiCl4 typeA. Polymerization of isoprene of over 99% purity; B. Polymerization of the ca. 25 % isoprene fraction; C. Some aspects of the kinetics of the stereospecificpolymerization of isoprene; Chapter III. Characterization of cis-1,4-polyisoprene; A. Physico-chemical characterization; B. Physico-mechanical characterization; Conclusions; PART II; Introduction; Chapter I. Pre-formed Ziegler-Natta-typecatalyst systems; 1. Two-component A1R3 + TiCl4 catalyst systems.
- 2. Modified A1R3 + TiCl4 catalyst systemsChapter II. Stereospecific polymerization ofisoprene with pre-formed catalystcomplexes; 1. Purity of polymerization systems; 2. Some aspects of isoprene polymerization; 3. Correlation between the structure and the technologicalbehaviour of polyisoprene; Chapter III. Deactivation of the catalyst complex; 1. Deactivation of the catalyst complex without inactivation ofthe transition metal; 2. Deactivation of the catalyst complex with inactivation of the transitionmetal; 3. Deactivation of the catalyst complex in the absence ofpolyisoprene.
- 4. Deactivation of the catalyst complex in the presence ofpolyisopreneChapter IV. The stabilization of polyisoprene; 1. Autoxidation mechanisms; 2. Relationships between structure and reactivity; 3. Selection criteria for stabilizers; 4. Mixtures of stabilizers; 5. Estimation of the effectiveness of stabilizers; 6. Macromolecular antioxidants; Chapter V. Recovery of polyisoprene fromsolution; Chapter VI. Characterization of cis-1,4-polyisoprene rubber by nuclearmagnetic resonance, electronmicroscopy and electron diffraction.