Last edited by Akinodal
Saturday, November 7, 2020 | History

6 edition of Crosslinking and Scission in Polymers found in the catalog.

Crosslinking and Scission in Polymers

  • 18 Want to read
  • 16 Currently reading

Published by Springer .
Written in English

    Subjects:
  • Polymer chemistry,
  • Scission (Chemistry),
  • Mechanical properties,
  • Polymeric Materials,
  • Science,
  • Technology & Industrial Arts,
  • Science/Mathematics,
  • Chemistry - Organic,
  • Engineering - Chemical & Biochemical,
  • Material Science,
  • Science / Chemistry / Organic,
  • Science-Chemistry - Organic,
  • Technology / Material Science,
  • Technology-Engineering - Chemical & Biochemical,
  • Congresses,
  • Crosslinking (Polymerization),
  • Polymers

  • Edition Notes

    NATO Science Series C:

    The Physical Object
    FormatHardcover
    Number of Pages272
    ID Numbers
    Open LibraryOL7806186M
    ISBN 100792305477
    ISBN 109780792305477

    Radiation and Polymers The Radiation Chemistry of Macromole-cules. MALCOLM DOLE, Ed. Twovolumes Vol. 1, xiv, pp., illus., $23; vol. 2, xviii, pp., illus., $ Academic Press, New York, The effect of ionizing radiation on polymers and related compounds has been a subject of considerable interest and study for more than 25 years. Understanding the thermal degradation of polymers is of paramount importance for developing a rational technology of polymer processing and higher-temperature applications. Controlling degradation requires understanding of many different phenomena, including chemical mechanisms, the influence of polymer morphology, the complexities of oxidation chemistry, . An essential book for those needing to conserve polymers in artefacts. Polymers form an integral part of a great many artefacts of historical importance. This book deals with the artefacts of the twentieth century and provides an overview of the problems of organic polymer systems encountered in conservation. Written with a chemical/materials science approach it points to . ture in polymers, the material starts a transition toward a soft and rubbery state. For example, when using a rubber band, one would hope to use the material above its glass transition temperature. However, for materials requiring rigidity and compressive strength, the glass transition) 3 Thermal Decomposition of Polymers,).


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Crosslinking and Scission in Polymers by O. GГјven Download PDF EPUB FB2

MOLECULAR WEIGHr CHANGES AND NE1WORK FORMATION BY SCISSION AND CROSSUNKING A. Charlesby 1 Introduction Main Chain Scission of Polymers _____ _. scission Download scission or read online books in PDF, EPUB, Tuebl, and Mobi Format. Click Download or Read Online button to get scission book now.

This site is like a library, Use search box in the widget to get ebook that you want. Crosslinking And Scission In Polymers. Crosslinking and Scission in Polymers. Editors: Güven, O. (Ed.) The Use of Size Exclusion Chromatography in the Studies of Crosslinking and Chain Scission in Polymers.

*immediately available upon purchase as print book shipments may be delayed due to the COVID crisis. ebook access is temporary and does not include ownership of the. "Proceedings of the NATO Advanced Study Institute on Advanced Methods of Determination of Crosslinking and Scission in Polymers and their Effects on Mechanical Properties, Kemer-Antalya, Turkey, September"--Title page verso.

Get this from a library. Crosslinking and Scission in Polymers. [O Güven] -- MOLECULAR WEIGHr CHANGES AND NE1WORK FORMATION BY SCISSION AND CROSSUNKING A. Charlesby 1 Introduction Main Chain Scission of Polymers _____ _ _____ _ 1.

The book presents papers that discuss experimental techniques to study polymer network structure; deduction of information on network structure from theoretical considerations; interpenetrating polymer networks; crosslinked polymers for high temperature applications; a novel class of polyurethanes; crosslinking agents; and the influence of.

The most well-known example of crosslinking is the vulcanisation of natural latex or butadiene polymers with sulphur, an accelerator and zinc oxide. The process is complicated and the crosslinked product tends to discolour. Functional groups are introduced into the binder polymers to make self-crosslinking systems, which are initiated by heating.

Author: Tim Winton; Publisher: Pan Crosslinking and Scission in Polymers book ISBN: Category: Fiction Page: View: DOWNLOAD NOW» ‘Tim Winton is the real thing: a writer who can photograph a thought and pluck out the beat of a soul on a washing line’ Scotland on Sunday In this, Tim Winton’s first collection of short stories, the world he paints is often harsh and disturbing.

How it Works. Electron beam processing effectively and efficiently creates beneficial changes in material properties and performance with processes such as polymer crosslinking, long-chain branching and chain process involves accelerating a beam of.

In chemistry and biology a cross-link is a bond that links one polymer chain to another. These links may take the form of covalent bonds or ionic bonds and the polymers can be either synthetic polymers or natural polymers (such as proteins).

In polymer chemistry "cross-linking" usually refers to the use of cross-links to promote a change in the polymers' physical properties. The aim of the study was to develop an antimicrobial hydrogel wound dressing by means of radiation-initiated crosslinking of hydrophilic polymers, i.e.

Buy Crosslinking and Scission in Polymers by O. Guven from Waterstones today. Click and Collect from your local Waterstones or get FREE UK delivery on orders over £Book Edition: Softcover Reprint of The Original 1st Ed.

stabilization of polymers under irradiation environments thus has become a key issue in the The Co-ordinated Research Project (CRP) on Stability and Stabilization of Polymers (crosslinking) in polymers which inherently undergo chain scission. Fluorinated. How to cite this article: Song, Q. et al.

Controlled thermal oxidative crosslinking of polymers of intrinsic microporosity towards tunable molecular sieve membranes. Nat. Commun. doi: 10 Cited by: Abstract. The 1st part of this chapter deals with fundamental aspects concerning (a) the absorption of UV and high energy radiation by matter, (b) the detection of crosslinks and scissions in linear polymers and (c) mechanistic aspects regarding crosslinking and main-chain by: 1.

A new thermally reactive monomer has been designed and synthesized that brings novel crosslinking chemistry to high-performance polymers. This monomer (XTA) is a derivative of terephthalic acid and was based on the thermal chemistry of benzocyclobutene. Various model compounds have been synthesized.

Elastomers are susceptible to chemical ageing, i.e., scission and cross-linking, at high temperatures. This thermally driven ageing process affects their mechanical properties and leads to limited operating time.

Continuous and intermittent stress relaxation measurements were conducted on ethylene propylene diene rubber (EPDM) and hydrogenated nitrile butadiene Author: Maha Zaghdoudi, Anja Kömmling, Matthias Jaunich, Dietmar Wolff. Chain scission is a term used in polymer chemistry describing the degradation of a polymer main chain.

It is often caused by thermal stress (heat) or ionizing radiation (e.g. light, UV radiation or gamma radiation), often involving chain cleavage, the polymer chain is broken at a random point in the backbone to form two - mostly still highly molecular - fragments.

standing of the crosslinking in the months just prior to the meeting have been described in the book derived from the conference, On Picture Varnishes and their Solvents, (2)(3). Thoughts About “Crosslinking” 1 These possessed number-average molecular weight on the order of 20, forming solutions with about times greater.

GPC is very useful to track the crosslinking and chain scission of polymers during ageing. But mostly the crosslinking and chain scission occurs at. Crosslinking improves the performance, strength, and durability of polymers. It can also help your business reduce costs. Browse through the following resources to learn more about polymer crosslinking and its ability to improve performance and reduce costs.

Feel free to download and share these resources with your friends and colleagues. @article{osti_, title = {Gel formation in polymers undergoing radiation-induced crosslinking and scission. [Dose rate of 1 Mrad/sec; MeV electrons]}, author = {Handlos, V N and Singer, K A}, abstractNote = {A study was made of the solubility of irradiated polyethylene.

The experimental data were treated according to the Saito-Inokuti theory for gel formation in. Cross-link is a bond that links one polymer chain to another polymer chain.

So cross-linked polymers are polymers that obtained when cross-link bond formed between monomeric units. The cross-linked polymer forms long chains, either branched or lin. Purchase Chemistry and Properties of Crosslinked Polymers - 1st Edition.

Print Book & E-Book. ISBNBook Edition: 1. 2 Fundamentals of Radiation Crosslinking 26 Radiation Chemistry of Crosslinking 26 7 Chain Scission and Oxidation Chemistry and General Technology Synthetic Polymers PTFE Crosslinking of Polymers Dispersed in Water The effects of radiation on polymers have been studied for many years.

When polymers are subjected to ultraviolet light or ionizing radiation, chain scission and crosslinking are possible. The radiation degradations of several methacrylate type polymers were investigated.

The primary polymer studied was polymethacrylamide (PMAAm). materials, but a general empirical conclusion for polymers with carbon chains is that crosslinking occurs if each carbon carries at least one hydrogen atom, whereas if a tetra substituted carbon is present scission takes place.

Both crosslinking and degradation may occur in the same polymer simultaneously, although usually ono process Size: 1MB.

Kotliar and A. Anderson, The influence of the initial molecular weight distribution on the molecular weight averages for polymers undergoing crosslinking and chain scission, Journal of Polymer Science, 45,(), (). POLYMER GRAFTING AND CROSSLINKING We are very fortunate to have the opportunity to edit a book in the grafting and crosslinking arena.

While several excellent books on polymers are available, our experience in research over the years has revealed the need for a book which emphasizes the basics as well as applied orientation for beginners. It does. Crosslinking in polymers means that the macromolecules will not only be physically bonded by the entanglements and intermolecular interactions.

It means that the different polymer chains will have covalent bonds between them. To understan. Ethene Based Polymers Addition Polymerization & Condensation Reactions Proteins & Other Natural Polymers Want to find Crash Course elsewhere on the internet.

Facebook - http. Crosslinking is a process of associating polymers through a chemical bond. In most of the cases it is irreversible and can be either intra or inter-molecular. Crosslinking boosts the thermal stability and mechanical properties of the polymer.

Types of polymers degradation. The degradation of polymers usually starts at the outer surface and penetrates gradually into the bulk of the material Blaga ().Polymer degradation can be caused by heat (thermal degradation), light (photodegradation), ionizing radiation (radio degradation), mechanical action, or by fungi, bacteria, yeasts, algae, and their enzymes Cited by: Magomedov's book Structure and Properties of Crosslinked Polymers makes no distinction between the physics of polymer entanglement and "real" crosslinks such as those in epoxies.

Of course in terms of long-term creep and (perhaps) long-term chemical stability, crosslinked systems are stronger, but in terms of adhesion there is no difference. Note: Some main-chain scissions are classified according to the mechanism of the scission process: hydrolytic, mechano-chemical, thermal, photo-chemical, or oxidative scission.

Others are classified according to their location in the @[email protected] relative to a specific structural feature, for example, α-scission (a scission of the C–C bond alpha to the carbon atom of a photo-excited. Theory of Gel—Dose Curves for Polymers Undergoing Simultaneous Crosslinking and Scission J.

Chem. Phys. 46, (); on the Wesslau molecular‐weight distribution function and the results are in much better agreement in the case of many polymers than are the theoretical calculations of Inokuti based on a normalized Cited by: Damage of Cross-Linked Rubbers as the Scission of Polymer Chains: Modeling and Tensile Experiments Alexei Y.

Melnikov and A.I. Leonov Department of Polymer Engineering, The University of Akron Akron, OhioU.S.A. Abstract This paper develops a damage model for unfilled cross-linked rubbers based on theAuthor: Alexei Y. Melnikov, A. Leonov. 2 Fundamentals of Radiation Crosslinking 26 Radiation Chemistry of Crosslinking 26 Crosslinking of Polymer 29 Estimation of G Value of Crosslinking 38 Factors Affecting Radiation Crosslinking 44 7 Chain Scission and Oxidation Chemistry and General Technology Synthetic Polymers Cellulose and its.

Crosslinking of polymers and foams thereof which avoids the chain scission effects of free radicals and more desirably also avoids the need for functional groups on polymers for reactive sites for crosslinking agents.

Desirably the crosslinking me hod would be initiated by heat, more desirably the temperatures normally encountered in.

consultants meeting on Advances in Radiation Chemistry of Polymers held at the University of Notre Dame, USA in September was the first in this series. The new developments concerning polymer processing were reported and the status of the technology was reviewed during the Size: 1MB.

Delayed-onset crosslinking of commodity polymers is accomplished by peroxide-initiated reactions of 4- acryloyloxy-2,2,6,6,-tetramethylpiperidine-N-oxyl (AOTEMPO) under solvent-free conditions.

Consistent with previous studies of polyethylene cure formulations, AOTEMPO provides predictable.The polymers in WB-1 and WB-2 do not undergo crosslinking after film formation, and thus resistance properties rely on their initially high molecular weight.

WB-3 is based on a currently available one-component, ambient temperature self-crosslinking acrylic binder (AC-3). The self-crosslinking functionality in AC-3 reliesFile Size: KB.In one example, a cross-linking process called vulcanization is used to increase the tensile strength and decrease the degradation rate of elastomeric polymers.

Vulcanization is the process of adding sulfur atoms to elastic polymer chains at high temperatures.