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Friday, July 24, 2020 | History

1 edition of Ionic polymerizations and related processes found in the catalog.

Ionic polymerizations and related processes

Ionic polymerizations and related processes

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Published by Kluwer Academic Publishers in Dordrecht, Boston .
Written in English

    Subjects:
  • Addition polymerization -- Congresses.

  • Edition Notes

    Statementedited by Judit E. Puskas ; assistant editors, Armin Michel, Shahzad Barghi (assisted by Christophe Paulo)
    SeriesNATO ASI series. Series E, Applied sciences -- vol. 359, NATO ASI series -- no. 359.
    ContributionsBarghi, Shahzad., Michel, Armin, Dr., Puskas, Judit E., NATO Advanced Study Institute on Ionic Polymerizations and Related Processes (1998 : London, Ont.)
    Classifications
    LC ClassificationsQD281.P6 I65 1999
    The Physical Object
    Paginationxxxv, 352 p. :
    Number of Pages352
    ID Numbers
    Open LibraryOL21164225M
    ISBN 100792358112

    IP’15 has roots from the series of international symposia on Cationic, Anionic, and Ring-Opening Polymerizations, which were merged as International Symposium on Ionic Polymerization in , held in Istanbul (Turkey). Decision of the merger was made in the 11th International Symposium on Cationic Polymerization and Related Processes, held in. Polymerization in Ionic Liquids. and N-butylpyridinium chloride based ionic liquid. Effects of the process parameters on the structure and relative molecular mass of the samples were studied.

    Anionic addition polymerization is a form of chain-growth polymerization or addition polymerization that involves the polymerization of monomers initiated with anions. The type of reaction has many manifestations, but traditionally vinyl monomers are used. Often anionic polymerization involves living polymerizations, which allows control of structure and composition. Request PDF | Polymerizations | Deep eutectic solvents (DESs) and their related family of liquids are based on the depression of the melting point of their original constituents | .

    This book presents these important facts: a) The mechanism of anionic polymerization, a more than year challenge in polymer chemistry, has now . Get this from a library! Proceedings of the International Symposium on Ionic Polymerization and Related Processes, Boston, USA, June July 4, [Jimmy W Mays; R F Storey;].


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Ionic polymerizations and related processes Download PDF EPUB FB2

In Ionic Polymerization and Related Processes, internationally recognised academic and industrial researchers discuss and debate the latest developments in the field. The major focus is on cationic polymerizations, but related anionic and controlled radical processes are.

About this book. Introduction. In Ionic Polymerization and Related Processes, internationally recognised academic and industrial researchers discuss and debate the latest developments in the field.

The major focus is on cationic polymerizations, but related anionic and controlled radical processes are also discussed. ISBN: OCLC Number: Notes: "Proceedings of the NATO Advanced Study Institute on Ionic Polymerizations and Related Processes, London, Ontario, Canada, August"--Title page verso.

Ionic Polymerizations and Related Processes. In Ionic Polymerization and Related Processes, internationally recognised academic and industrial researchers discuss and debate the latest developments in the field.

The major focus is on cationic polymerizations, but related anionic and controlled radical processes are also discussed.

Proceedings of the NATO Advanced Study Institute, The University of Western Ontario, London, Canada, AugustIn Ionic Polymerization and Related Processes, internationally recognised academic and industrial researchers discuss and debate the latest developments in the field.

The major focus is on cationic polymerizations, but related anionic and controlled radical processes. This chapter describes anionic and cationic chain polymerization of carbon–carbon double bond monomers, with emphasis on the parameters that control polymer molecular weight.

The rate and molecular weight in both reversible and irreversible polymerizations are discussed together with the process conditions needed for producing different polymers. Ionic polymerizations are characterized by successive monomer additions to a growing macroion. Here, anionic polymerizations, with macroanions as active growth centers, are distinguished from cationic polymerizations which have macrocations as active growing centers.

The wide range of commercial materials that are produced by industrial cationic polymerization processes is presented. Vinyl or ring-opening cationic polymerization methods enable the synthesis of Cationic Polymerization: Industrial Processes and Applications | SpringerLinkCited by: 1.

Ionic polymerizations are more highly selective than radical processes due to strict requirements for stabilization of ionic propagating species [3]. Ionic polymerization occurs very quickly (matter of seconds) and provides the ability to create different polymer and copolymer shapes that include block, random, and alternating (various shapes are discussed at later.

Ring-opening polymerization The ring-opening polymerization consists of both chain and step polymerization as far as kinetics and mechanisms are concerned. Most of ring-opening polymerizations are very rapid and involve cyclic compounds by ionic mechanisms in the presence of strong acids or bases when water and alcohols are excluded.

Radical Cation Vinyl Ether Cationic Polymerization Addition Fragmentation Pyridinium Salt. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

This is a preview of subscription content, log in to check by: 2. Ionic Reaction. Ionic reactions are much more sensitive than free-radical processes to the effects of solvent, temperature, and adventitious impurities.

From: The Elements of Polymer Science & Engineering (Third Edition), Related terms: Supercritical; Ion; Dielectric Constant; Radical Polimerization. Most ionic polymerizations have equilibrium between ion pairs (II or III, depending upon solvent) and free ion (IV).

occurs by several processes for cationic polymerization, but termination is absent for anionic polymerization. Initiation of Cationic Chain Polymerization: HA + (CH3)2C=CH2 →(CH3)3C+(A-) AlCl3, BF3, SnCl4File Size: KB. Ionic polymerization is a chain-growth polymerization in which active centers are ions or ion pairs.

It can be considered as an alternative to radical polymerization, and may refer to anionic polymerization or cationic polymerization.

As with radical polymerization, reactions are initiated by a reactive compound. The active site in chain-growth polymerizations can be an ion instead of a free-radical.

Ionic reactions are much more sensitive than free-radical processes to the effects of solvent, temperature, and adventitious impurities. Successful ionic polymerizations must be carried out much more carefully than normal free-radical syntheses.

In nitroxide-mediated controlled free radical polymerization, reversible deactivation of the growing chains is accomplished by covalent bond formation [50].

At low temperatures, the C-ON bond is stable, whereas at higher temperatures, homolytic cleavage is possible, giving the macroradical and the nitroxide radical. Pi Z., Jacob S., Kennedy J.P. () Cationic Polymerizations at Elevated Temperatures by Novel Initiating Systems Having Weakly Coordinating Counteranions.

High Molecular Weight Polyisobutylenes. In: Puskas J.E., Michel A., Barghi S. (eds) Ionic Polymerizations and Related Processes. NATO Science Series (Series E: Applied Sciences), vol Cited by: 7.

Ionic liquids have emerged as a new class of solvents for ionic polymerization due to their low volatility, chemical stability, high conductivity, wide electrochemical window. The advantages and limitations of application of ionic liquids as solvents for ionic polymerization processes are critically discussed in this chapter.

The field of cationic polymerization in ionic liquid has Author: Yibo Wu. Purchase Polymer Science: A Comprehensive Reference - 1st Edition. Print Book & E-Book. ISBNPreface Introduction: Comparison of ionic and radical polymerizations Developments of ionic polymerization Living and dormant polymers Polymerizability and the monomer-.

The Ionic Polymerization series of symposia have roots in the individually-held international symposia on cationic, anionic, and ring-opening polymerizations.

Inthe European Polymer Federation Workshop on “Anionic Polymerization and Related Processes” was held in .Throughout, the authors offer perceptive insights into the basic concepts of polymerization chemistry and polymerization reaction mechanisms.

The book begins with a review of ionic and radical polymerizations, the development of ionic polymerization, living and dormant polymers, and by: In condensation polymerization, each step of the process is accompanied by the formation of a molecule of some simple compound, often water.

In addition polymerization, monomers react to form a polymer without the formation of by-products. Addition polymerizations usually are carried out in the presence of catalysts.