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Polyampholytes

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Polyampholytes

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Author : Sarkyt E. Kudaibergenov
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06

Polyampholytes written by Sarkyt E. Kudaibergenov and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.

In order to adapt the properties of living materials to their biological functions, nature has developed unique polyelectrolytes with outstanding physical, chemical and mechanical behavior. Namely polyampholytes can be suitable substances to model protein folding phenomenon and enzymatic activity most of biological macromolecules due to the presence of acidic and basic groups. The ability of linear and crosslinked amphoteric macromolecules to adopt globular, coil, helix and stretched conformations and to demonstrate coil-globule, helix-coil phase transitions, and sol-gel, collapsed expanded volume changes in relation to internal (nature and distribution of acid and base substituents, copolymer composition, hydrophobicity etc. ) and external (pH, temperature, ionic strength of the solution, thermodynamic quality of solvents etc. ) factors is very important and constantly attracts the attention of theorists and experimentalists because the hierarchy of amphoteric macromolecules can repeat, more or less, the structural organization of proteins. That is why polyampholytes fall within eyeshot of several disciplines, at least polymer chemistry and physics, molecular biology, colloid chemistry, coordination chemistry and catalysis. The main purpose of this monograph is to bridge the gap between synthetic and natural polymers and to show a closer relationship between two fascinating worlds. The first chapter of the book acquaints the readers with synthetic strategy of "annealed", "quenched" and "zwitterionic" polyampholytes. Radical copolymerization, chemical modification and radiation-chemical polymerization methods are thoroughly considered. Kinetics and mechanism of formation of random, alternating, graft, di-block or tri-block sequences is discussed. The second chapter deals with behavior of polyampholytes in solutions.

Colloidal Behavior Of Polyampholytes

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Author :
language : en
Publisher:
Release Date : 2004

Colloidal Behavior Of Polyampholytes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

Polyampholytes are polymers that have both positively and negatively charged groups in the same chain. In recent years polyampholytes have started to be used in papermaking applications, as well as in sludge treatment processes. Benefits, in the case of papermaking, have included increased dry-strength and faster removal of water. But the molecular mechanisms by which such benefits are achieved have not been fully understood. This thesis project focused on effects related to polyampholyte charge density. A series of polyampholytes with a fixed charge ratio but different charge density was used for the experiments. Analysis methods included pH titrations, streaming current titrations, and adsorption isotherms. From pH titrations the charge density of cationic and anionic groups under different pH were calculated. From streaming current tests the net apparent charge density under different pH was calculated. And from adsorption tests it was found that the highest adsorbed amounts were achieved in certain cases corresponding to the highest content of ionic groups on the polyampholytes. Adsorption depended strongly on pH. Substantial differences were observed when comparing results obtained with polyampholyte samples versus ordinary polyelectrolyte samples with same charge density of cationic or anionic groups.

Polymer Latexes Epoxide Resins Polyampholytes

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Author :
language : en
Publisher: Springer
Release Date : 2003-07-01

Polymer Latexes Epoxide Resins Polyampholytes written by and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-07-01 with Technology & Engineering categories.

Polyampholytes In Advanced Polymer Science And Emerging Technologies

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Author : Sarkyt E. Kudaibergenov
language : en
Publisher: CRC Press
Release Date : 2024-09-04

Polyampholytes In Advanced Polymer Science And Emerging Technologies written by Sarkyt E. Kudaibergenov and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-09-04 with Technology & Engineering categories.

Polyampholytes are unique polymers containing acid/base and/or anionic/cationic groups in the main or side chains. Water-soluble and water-swelling polyampholytes exhibit properties that provide broad potential as structural biomaterials, drug delivery and chemo-mechanical systems, biosensors, energy storage devices, supercapacitors, and actuators, among others. This monograph reviews the innovative studies in this field over the past two decades, with the aim to analyze and systematize the literature in the context of emerging technologies. Offers a multidisciplinary perspective covering polyampholytes, polybetaines, and polyzwitterions in nanotechnology, biotechnology, medicine, catalysis, environment protection, and oil industry applications Demonstrates a wide range of applications for these materials with enough depth to provide critical fundamental knowledge for new researchers in the field Discusses polyampholyte-protected and gel-immobilized metal nanoparticles and enzymes that catalyze reactions of hydrolysis, decomposition, hydrogenation, and oxidation of various substrates in batch-type and continuous flow–type reactors Highlights the remaining persistent challenges in the development and application of these materials This book will appeal to readers who conduct materials research for biomedical, water treatment, and environmental remediation applications.

Polyampholytes In Advanced Polymer Science And Emerging Technologies

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Author : Sarkyt E. Kudaibergenov
language : en
Publisher:
Release Date : 2024-09-04

Polyampholytes In Advanced Polymer Science And Emerging Technologies written by Sarkyt E. Kudaibergenov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-09-04 with Business & Economics categories.

Polyampholytes are unique polymers with properties that show potential as structural biomaterials, drug delivery and chemo-mechanical systems, biosensors, energy storage devices, supercapacitors, and actuators. This book reviews studies over the past 2 decades, analyzing and systematizing literature in the context of emerging technologies.