Free Delivery Over $100
|
|
|||
|
||||
OverviewIt is generally accepted that a new material is often developed by ?nding a new synthesis method of reaction or a new reaction catalyst. Historically, a typical example may be referred to as a Ziegler–Natta catalyst, which has allowed large-scale production of petroleum-based polyole?ns since the middle of the 20th century. New polymer synthesis, therefore, will hopefully lead to creation of new polymer materials in the 21st century. This special issue contributed by three groups focuses on recent advances in polymer synthesis methods, which handle the cutting-edge aspects of the advanced technology. The ?rst article by Yokozawa and coworkers contains an overview of the - action control in various condensation polymerizations (polycondensations). Advanced technologies enabled the control of stereochemistry (regio-, g- metrical-, and enantio-selections), chemoselectivity, chain topology, and st- chiometry of monomers, giving a high molecular weight polymer. It has been recognized for a long time, however, that polycondensation is a dif?cult p- cess in controlling the reaction pathway, because the reaction is of step-growth and the reactivity of monomers, oligomers, and polymers are almost the same during the reaction and hence, the molecular weight of polymers and its d- tribution (M /M ) are impossible to regulate. The authors’ group developed w n a new reaction system (chain-growth condensation polymerization), changing the nature of polycondensation from step-growth to chain-growth; namely the propagating chain-end is active, allowing for control of the product molecular weight as well as the distribution. Full Product DetailsAuthor: Shiro KobayashiPublisher: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG Imprint: Springer-Verlag Berlin and Heidelberg GmbH & Co. K Edition: Softcover reprint of hardcover 1st ed. 2008 Volume: 217 Dimensions: Width: 15.50cm , Height: 1.00cm , Length: 23.50cm Weight: 0.314kg ISBN: 9783642089206ISBN 10: 3642089208 Pages: 188 Publication Date: 22 November 2010 Audience: Professional and scholarly , Professional & Vocational Format: Paperback Publisher's Status: Active Availability: Out of print, replaced by POD  We will order this item for you from a manufatured on demand supplier. Table of ContentsT. Yokozawa, N. Ajioka, A. Yokoyama: Reaction Control in Condensation Polymerization.- N. Kawahara, J. Saito, S. Matsuo, H. Kaneko, T. Matsugi, N. Kashiwa: Polymer Hybrids Based on Polyolefins - Syntheses, Structures, and Properties.- K. Endo: Synthesis and Properties of Cyclic Polymers.-ReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |
||||
