Preparation and Properties of Stereoregular Polymers: Based Upon the Proceedings of the NATO Advanced Study Institute Held at Tirrennia, Pisa, Italy, October 3–14, 1978
This book contains the texts of the main lectures presented at the NATO Advanced Studies Institute on "Advances in Preparation and Properties of Stereoregular Polymers" held at Tirrenia near Pisa, Italy, from October 3 to 14, 1978. A few contributed papers have also been included because they were concerned with topics not included in the main lectures. The primary objective of the Institute was to assist in the further development of stereoregular polymers because of the ever-increasing demand for new products with exceptional chemical and physical properties. This need has reawakened interest in the field. Indeed there is now a rapidly increasing activity in the study of stereoregular polymerization and the preparation of structurally-ordered polymers with the aim of achieving apprecia ble improvements in existing polymeric materials through new developments in synthesis and properties as well as in discovering new polymeric structures. In order to achieve these objectives, a broad interdiscipli nary cooperation among scientists involved in investigations on the design, synthesis, characterization and application of stereo regular or structurally-ordered polymers will be necessary.
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Stereoregulation of Homogeneous Free RadicalCat
Ion Pair Effects on the Anionic Oligomerization
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addition alkyl amounts angles assignments asymmetric atoms bond calculated carbon carbon atoms catalyst centres chain Chem chemical chiral complex compounds configuration conformation considered containing coordination copolymers corresponding crystal crystalline depending derived determined developed discussed distribution double bond effect energy Equation ethylene example existence Figure formation fraction given groups indicated initiator internal isomerism isotactic Italy kinetic Macromolecules Makromol mechanism metal methods methyl molecular weight molecules monomer Natta observed obtained occurs optically active poly polymerization possible prepared present propagation properties proposed propylene protons racemic reaction recently REFERENCES reported resonances respect ring rotation Scheme sequence shown shows side similar species spectra stereo stereoelective stereoisomers stereoregular polymers stereospecific steric structure studies substituted syndiotactic Table tacticity temperature tion trans transition units values various vinyl yield