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2 edition of Radiation induced graft copolymerisation onto cellulosic materials. found in the catalog.

Radiation induced graft copolymerisation onto cellulosic materials.

Keith Derek Nicholas Lawrence

Radiation induced graft copolymerisation onto cellulosic materials.

by Keith Derek Nicholas Lawrence

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  • 29 Currently reading

Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D.)- Univ. of Birmingham, Dept of Chemistry.

ID Numbers
Open LibraryOL19886618M

Polysaccharides are the most abundant natural organic materials and polysaccharide based graft copolymers are of great importance and widely used in various fields. Natural polysaccharides have recently received more attention due to their advantages over synthetic polymers by being non-toxic, biodegradable and available at low cost. Radiation Induced Graft Copolymerization ofMethyl Methacrylate on Natural and Modified Wool: Part IV-Mechanical Properties D SoVARMA & R K SADHIR* Fibre Science Laboratories, Indian Institute of Technology, New Delhi Received 6January ; accepted 7 May Author: D S Varma, R K Sadhir.

Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, make your event a Frontiers Event! Free-Radical Initiated Graft Polymerization of Vinyl Monomers onto Cellulose JETT C. ARTHUR JR. Chapter 2, DOI: /bkch Publication Date (Print): J

The extraction of recycled newspapers (RNP) cellulose pulp began by a series of chemical alkali extraction, 5 wt% NaOH at °C for 2 h. Subsequently, the bleaching of Cited by: 2. Thermoreversible hydrogel based on radiation induced copolymerisation of poly(N-isopropyl acrylamide) and poly(ethylene oxide) †.


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Radiation induced graft copolymerisation onto cellulosic materials by Keith Derek Nicholas Lawrence Download PDF EPUB FB2

Graft copolymerization of vinyl monomers onto natural polysaccharides (starch, cellulose, guar gum, chitosan, pectin, etc.) is the most promising technique given its functionalization of those biopolymers proper to their potential by giving them desirable properties.

Cellulose gains different physical and/or chemical properties depending on the. γ‐Radiation‐Induced Graft Copolymerization of Ethyl Acrylate onto Hydroxypropyl Methylcellulose August Macromolecular Materials and Engineering (8) - RADIATION-INDUCED GRAFT POLYMERIZATION 93 C.

Determination of kO2/kt Chandler et al. {12), in one of the first studies designed to investigate in detail the kinetics of radiation-induced graft polymerization, applied Eq. (20) to the grafting of styrene to by: 4.

Kinetic behaviour of graft copolymerisation of glycidyl methacrylate onto nylon-6 fibres in solvent- and emulsion- media was investigated. The order for the dependence of the initial rate of grafting on the monomer concentration for solvent and emulsion grafting systems were found to be andrespectively.

The order of dependence of the initial rate of Cited by: 5. The radiation‐induced graft polymerization of styrene to low density polyethylene was investigated. It was found that dilution of the styrene monomer with methanol accelerates the rate of graft polymerization with a maximum effect occurring at approximately 70 vol.‐% methanol.

The graft copolymerization of vinylbenzyl chloride (VBC) onto nylon-6 fiber was investigated by the pre-irradiation method using electron beam. The effects of grafting parameters, monomer concentration, absorbed dose and reaction temperature were investigated.

The empirical kinetic rate equation dGo/dt=k[M]^*[D]^ was used to describe grafting of VBC onto nylonCited by: 1. The radiation induced graft polymerization is a well-known method to obtain new materials. Until recently, only conventional Radiation induced graft copolymerisation onto cellulosic materials.

book sources, such as Co and electron beams, were used. The full text of this article hosted at is unavailable due to technical difficulties. techniques of graft copolymerization and blending have acquired importance in improving the performance of materials ().In this study we concentrate on the grafting technique, which could be achieved by several methods such as chemical, photochemical, enzymatic, radiation and plasma induced techniques[1].

The influence of the major grafting parameters (irradiation dose, reaction time, and inhibitor concentration) on graft polymerization of glycidyl methacrylate from its 10% solution in methanol onto nonwoven polypropylene upon irradiation with Cited by: 4.

TRANSFER GRAFT POLYMERIZATION Olgun Güven Department of Chemistry Hacettepe University Beytepe, Ankara, Turkey Paper presented at the International Conference on “Recent Developments and Applications of Nuclear Technologies, 16 SeptemberBialowieza, Poland RADIATION INDUCED GRAFT POLYMERIZATION.

*Correspondence: E-mail The Graft Copolymerisation of Acrylamide onto Cellulose using Enhanced Fe2+ / H 2O2 redox initiator system 1JIDEONWO, A; *2ADIMULA, H A 1 Department of Chemistry, University of Benin, Benin City, Nigeria 2 Department of Industrial Safety and Environmental Science, Petroleum Training Institute, Effurun, Delta by: 4.

The graft yield (%) has been determined as a func-tion of different variables that influence grafting. The effect of ferrous ammonium sulphate (FAS) as additive on grafting has also been studied. A plausible mechanism of radiation-induced grafting has been suggested. 2 Materials and Methods Viscose rayon was obtained from Grasim In-Cited by: 1.

It was found that the weight of thrombus formed on grafted PVC was less than that of PVC and glass and decreased with the increase in the graft level. The adhesion of platelets on grafted PVC was retarded after grafting with MAA hydrogels. PMID: [PubMed - indexed for MEDLINE] MeSH Terms.

Biocompatible Materials* Hemolysis; Humans; In Cited by: polymeric materials is to graft monomers onto them by using an irradiation technique known as radiation-induced grafting.

Radiation-induced grafting method has the advantages such as simplicity, low cost, control over process and adjustment of the materials composition and structure.

In addition, this method assures the grafting of. Graft polymers are segmented copolymers with a linear backbone of one composite and randomly distributed branches of another composite. The picture labeled "graft polymer" shows how grafted chains of species B are covalently bonded to polymer species A.

Although the side chains are structurally distinct from the main chain, the individual grafted chains may be homopolymers or. Graft Polymerization ofAcrylamide and 2-Acrylamidomethylpropanesulfonic Acid onto Starch GEORGEF.

FANTA, ROBERT C. BURR, and WILLIAM M. DOANE, Northern Regional Research Center, AgriculturalResearch, Science and Education Administration, U.S. Department ofAgriculture, Peoria, Illinois SynopsisCited by: One-step radiation-induced graft polymerization was performed using vinyl monomers in the presence of MWNTs in order to use biosensor supports.

From these results we concluded the following. Radiation-induced graft polymerization of the functionalized vinyl monomer could introduce very simply and easily a functional group onto the MWNT by: 2. "Kinetics of Radiation-induced Graft Copolymerization of 2-Hydroxyethyl Methacrylate onto Silicone Rubber Films” J.

Macromol. Sci.-Chem.A27(1), Associated People. Int J Appl Radiat Isot. Aug; The radiation-induced graft copolymerization of 4-vinyl pyridine to terylene.

HOULTON MR, THOMAS by: 1. Acrylamide and methylmethacrylate monomers were grafted onto bleached cellulosic fibres using K 2 S 2 O 8 and a redox system of K 2 S 2 O 8-Na 2 S 2 O 5 as initiators at room temperature while varying time, monomer concentration and concentration of initiator.

The study have shown that percentage grafting increases as the concentration of monomers. els of graft substitutions ( to polystyryl chains per cellulosic chain and molecular weights ranging fromto ,) would be poor interfacial compatibilizers.

In fact, the high molecular weights of the grafts and the low levels of graft substitution would make these materials behave more like blends than graft polymers.In recent years, the use of ceric ions to initiate the graft copolymerisation of vinyl monomers on cellulose materials has received much attention from the practical and fundamental points of view Grafting of polysaccharides in general, is of interest because of its potential as a technique for modifying the.