BS ISO 21561-1:2015 BSl Standards Publication Styrene-butadiene rubber (SBR) Determination of the microstructure of solution- polymerized SBR Part 1: 'H-NMR and IR with cast-film method bsi. ..making excellence a habit BRITISH STANDARD BS ISO 21561-1:2015 National foreword This British Standard is the UK implementation of ISO 21561:2005+A1:2010 which will be withdrawn upon publicationof BS ISO 21561-2. The UK participation in its preparation was entrusted to Technical Committee PRI/23, Test methods for rubber and non-black compounding ingredients. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @TheBritishStandards Institution2015. Published by BSI Standards Limited 2015 ISBN9780580868351 ICS 83.060 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2015. Amendments/corrigenda issued since publication Date Textaffected ISO INTERNATIONAL STANDARD 21561-1 First edition 2015-07-15 Styrene-butadiene rubber (SBR) - Determination of the microstructure of solution-polymerized SBR - Part 1: 1H-NMR and IR with cast-film method Caoutchouc styrene-butadiene (SBR)-Détermination de la microstructureduSBRpolymériséensolution- Partie1:Méthode1H-NMRetIRavecfilmmoule Referencenumber IS0 21561-1:2015(E) TO @IS02015 BSISO 21561-1:2015 IS0 21561-1:2015(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISo's member body in the country of the requester. ISO copyright office Ch.de Blandonnet 8.CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org ii ISO 2015-Allrights reserved BSISO 21561-1:2015 IS0 21561-1:2015(E) Contents Page Foreword iv 1 Scope 1 2 Normative references 3 NMR method (absolute method) 1 3.1 Principle 1 3.2 Reagents. 2 3.3 Apparatus 2 3.4 Sampling. 2 3.5 Procedure 2 3.6 Determinationofthemicrostructure 3 IR method (relative method) 4 4 4.1 Principle 4 4.2 Reagents. 4 4.3 Apparatus 4 4.4 55 Sampling 4.5 Procedure 4.5.1 Preparation of sample solution. 5 4.5.2 Preparationoffilmcoating 5 4.5.3 MeasurementofIRspectrum 5 4.6 Determinationofmicrostructure. 6 4.6.1 Measurement of absorbance corresponding to each microstructure component.6 4.6.2 Calculation 7 4.7 ConversionoftheIRmethod resultstoabsoluteresults 8 5 .9 Precision Test report. .9 6 Annex A (informative) Procedure for sample-film preparation and measurement of microstructurebyFTIRspectrophotometry .10 AnnexB (informative)Precision .15 Bibliography .17 @ IS0 2015 - All rights reserved iii BSISO 21561-1:2015 IS0 21561-1:2015(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (sO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees.Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. ISo collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the Iso/IEC Directives, Part 1.In particular the different approval criteria ne