1、BSI Standards PublicationBS ISO 16620-3:2015Plastics Biobased contentPart 3: Determination of biobased syntheticpolymer contentBS ISO 16620-3:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 16620-3:2015. The UK participation in its preparation was entruste
2、d to TechnicalCommittee PRI/21, Testing of plastics.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. The Britis
3、h Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 84623 6ICS 83.080.01Compliance 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 30 April 2
4、015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 16620-3:2015 ISO 2015Plastics Biobased content Part 3: Determination of biobased synthetic polymer contentPlastiques Teneur biosource Partie 3: Dtermination de la teneur en polymre synthtique biosourcINTERNATIONAL S
5、TANDARDISO16620-3First edition2015-04-01Reference numberISO 16620-3:2015(E)BS ISO 16620-3:2015ISO 16620-3:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in
6、 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 ISOs member body in the country of the requester.ISO copyright officeCase post
7、ale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 16620-3:2015ISO 16620-3:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms, definitions, and symbols 13.1 Terms and definitions . 13.2 Symbo
8、ls . 14 Principle 25 Procedure. 26 Calculation and expression of results . 26.1 Biobased carbon content 26.2 Biobased synthetic polymer content . 27 Test Report 3Annex A (informative) Example of calculations of biobased synthetic polymer content 4Annex B (informative) Example of calculations for bio
9、based synthetic polymer content using biobased carbon content . 6 ISO 2015 All rights reserved iiiContents PageBS ISO 16620-3:2015ISO 16620-3:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work o
10、f 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-governmenta
11、l, 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 IS
12、O/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibili
13、ty that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of pat
14、ent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as infor
15、mation about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 5, Physical-chemical properties.ISO 16620 consists of the followin
16、g parts, under the general title Plastics Biobased content: Part 1: General principles Part 2: Determination of biobased carbon content Part 3: Determination of biobased synthetic polymer contentThe following parts are under preparation: Part 4: Determination of the biobased mass content Part 5: Dec
17、laration of biobased carbon content, biobased synthetic polymer content and biobased mass contentiv ISO 2015 All rights reservedBS ISO 16620-3:2015ISO 16620-3:2015(E)IntroductionIncreased use of biomass resources for manufacturing plastic products is effective in reducing global warming and the depl
18、etion of fossil resources.Current plastic products are composed of biobased synthetic polymers, fossil-based synthetic polymers, natural polymers, and additives that can include biobased materials.Biobased plastics refer to plastics that contain materials wholly or partly of biogenic origin.In this
19、series of International Standards, the biobased content of biobased plastics refers to the amount of the biobased carbon content, the amount of the biobased synthetic polymer content, or the amount of the biobased mass content, only. ISO 2015 All rights reserved vBS ISO 16620-3:2015BS ISO 16620-3:20
20、15Plastics Biobased content Part 3: Determination of biobased synthetic polymer contentWARNING The use of this part of ISO 16620 can involve hazardous materials, operations, and equipment. This part of ISO 16620 does not purport to address all of the safety concerns, if any, associated with its use.
21、 It is the responsibility of the user of this part of ISO 16620 to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.1 ScopeThis part of ISO 16620 specifies the method of determining the amounts of biobased part in the biobased s
22、ynthetic polymer in plastics products. This calculation method for biobased synthetic polymer content is based on the mass of biobased synthetic polymer in the plastics products.This part of ISO 16620 is applicable to plastic products and plastic materials, polymer resins, monomers, or additives, wh
23、ich are made from biobased or fossil-based constituents.Knowing the biobased content of plastic products is useful when evaluating their environmental impact.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its
24、application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 16620-1, Plastics Biobased content Part 1: General principlesISO 16620-2, Plastics Biobased content Part 2: Determination of
25、 biobased carbon content3 Terms, definitions, and symbols3.1 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 16620-1 apply.3.2 SymbolsFor the purposes of this document, the symbols given in ISO 16620-1 and the following apply.Wnmass composition of n con
26、stituent of the product;mBSP,nbiobased synthetic polymer content of n constituent of the product;xB,nbiobased carbon content of n constituent of the product.INTERNATIONAL STANDARD ISO 16620-3:2015(E) ISO 2015 All rights reserved 1BS ISO 16620-3:2015ISO 16620-3:2015(E)4 PrincipleThe indication of bio
27、mass used in plastic products is a practical way to assess efforts to develop wholly or partly biobased synthetic polymers. It also helps consumers to understand and compare relative contributions to environmental protection.This part of ISO 16620 provides a method for the measurement of the biobase
28、d synthetic polymer content, derived from biomass resources.The biobased synthetic polymer content of a plastic item can be calculated from the composition of the plastic, stated as a list of constituents with their percentage by mass, and from the biobased synthetic polymer content of said constitu
29、ents (see, for examples, Annex A, Table A.1, and Table A.2).Only synthetic polymers are eligible to be considered in this calculation, when they are wholly or partly biobased. Natural polymers and any biobased additive are not included in the biobased synthetic polymer content.5 ProcedureThe composi
30、tions of biobased synthetic polymers provided by a manufacturer can be used to determine the biobased synthetic polymer content of plastic products.6 Calculation and expression of results6.1 Biobased carbon contentThe biobased carbon content of each biobased synthetic polymer constituent of a produc
31、t shall be calculated from the C14analysis as described in ISO 16620-2.6.2 Biobased synthetic polymer contentThe biobased synthetic polymer content of a constituent A, mBSP,Ais 100 %, where this constituent is a wholly biobased synthetic polymer. If the constituent is a partly biobased synthetic pol
32、ymer, mBSP,Ais the mass fraction of the biobased unit which is wholly biobased in this constituent (see Annex A). The mBSP,nis 0 %, where the constituent is an additive, native natural polymer, or fossil-based polymer.Compositions and biobased synthetic polymer contents are shown in Table 1.Table 1
33、Composition, biobased synthetic polymer content in a productConstituentDry mass fraction %Biobased synthetic polymer content %Biobased carbon content %Biobased synthetic polymer WAmBSP,AxB, AFossil-based synthetic polymer WB0 0Natural polymer WC0 100Biobased additive WD0xB,DFossil-based additive WE0
34、 0Inorganic additive WF0 0Product (total) 100mBSPxBTOCThe biobased synthetic polymer content in a product shall be calculated using Formula (1) (see Annex A).2 ISO 2015 All rights reservedBS ISO 16620-3:2015ISO 16620-3:2015(E)The biobased synthetic polymer content is expressed as a percentage of mas
35、s.mWmBSPABSP,A=100(1)whereWAis the % by mass of constituent A, “biobased synthetic polymer”, used in the product;mBSP,Ais the biobased synthetic polymer content of constituent A.7 Test ReportThe test report shall provide all pertinent information, and specifically the following:a) a reference to thi
36、s International Standard, i.e. ISO 16620-3:2015;b) a report on the experimentally determined biobased carbon content for each of the biobased synthetic polymer;c) a report on the formula/composition (elemental analysis) of each constituent in the biobased synthetic polymer;d) a calculation of the bi
37、obased synthetic polymer content, expressed as a percentage of total mass of the product. ISO 2015 All rights reserved 3BS ISO 16620-3:2015ISO 16620-3:2015(E)Annex A (informative) Example of calculations of biobased synthetic polymer contentBiobased synthetic polymers include biobased carbon atoms i
38、nstead of fossil carbon atoms. Sometimes, it is convenient for customers to define the biobased content in products as a percentage of mass. Examples of the calculation of biobased synthetic polymer content for a composite and a copolymer are shown in Table A.1 and Table A.2. The composite consists
39、of polylactic acid (PLA) as a biobased synthetic polymer, polypropylene as a fossil-based synthetic polymer, starch as a biobased additive, dibutyl phthalate, and calcium carbonate.Table A.1 Example of calculation of the biobased synthetic polymer content of a productConstituentChemical formulaDry m
40、ass fraction%Biobased synthetic polymer contentmBSP%PLAaC3H4O230 100PPbC3H630 0Starch C6H10O520 0DBPcC16H22O45 0Calcium carbonate CaCO315 0Product ( Tot al) 100 30aPoly(lactic acid).bPolypropylene.cDibutyl phtalate.The biobased synthetic polymer content is defined as the mass percent of the biobased
41、 synthetic polymer in a product. In Table A.1, the biobased synthetic polymer is only PLA; therefore, the mass percent of PLA, 30%, is the biobased synthetic polymer content.An example of a partly biobased synthetic polymer of poly(ethylene terephthalate) in which the ethylene glycol unit of the pol
42、ymer is biobased and the terephthalate unit is fossil-based is shown in Table A.2.Table A.2 Example of calculation of the biobased synthetic polymer content of a copolymerMonomer unitChemical formulaMolecular weightDry mass fractionBiobased synthetic polymer contentg %mBSP%ethylene glycol C2H4O260 3
43、1,25 100Terephthalate C8H4O2132 68,75 0Copolymer (Total) 192 100 31,25Poly(ethylene terephthalate): (O-CH2-CH2-O) (CO-C6H4-CO) nAn example of the biobased synthetic polymer of product including PLA, bio-PET as shown in Table A.2, PP, starch, DBP, and calcium carbonate is shown in Table A.3.4 ISO 201
44、5 All rights reservedBS ISO 16620-3:2015ISO 16620-3:2015(E)Table A.3 Example of calculation of the biobased synthetic polymer content of a productConstituentChemical formulaDry mass fractionBiobased synthetic polymer content%mBSP%PLAaC3H4O230 100Bio-PET -d20 31,25ePPbC3H610 0Starch C6H10O520 0DBPcC1
45、6H22O45 0Calcium carbonate CaCO315 0Product ( Tot al) 100 36,25faPoly(lactic acid).bPolypropylene.cDibutyl phtalate.dBio-PET Poly(ethylene terephthalate): (O-CH2-CH2-O) (CO-C6H4-CO) n.eThis value was calculated based on Table A.2.fThe biobased synthetic polymer content = 30 + (20 31,25) / 100 (%). I
46、SO 2015 All rights reserved 5BS ISO 16620-3:2015ISO 16620-3:2015(E)Annex B (informative) Example of calculations for biobased synthetic polymer content using biobased carbon contentWhere the biobased synthetic polymer content of sample is 100%, its biobased carbon content which can be measured on th
47、e basis of ISO 16620-2 is 100%.For a partly biobased synthetic polymer of polyethylene terephthalate (bio-PET) in which the ethylene glycol unit (EG) of the polymer is biobased and the terephthalate unit (TA) is fossil-based, the method for the calculation of biobased carbon content from biobased sy
48、nthetic polymer content and carbon fraction (content) is shown in Table B.1. The biobased synthetic polymer content of bio-PET is 31,25% (see Table A.2).Table B.1 Example of calculation of the biobased carbon content from the biobased synthetic polymer content of partly biobased synthetic copolymerB
49、io-PETEG TAComposition, % 31,25 68,75Chemical formula of unit -OC2H4O- -OC8H4O-Molecular weight of unit(Carbon weight of unit)60(24)132(96)Carbon fraction 0,4 0,727Relative carbon mass in copolymer31,2 0,4 = 12,5 68,75 0,727 = 49,98Biobased carbon content in copolymer (%)12,5 / (12,5 + 49,98) 100 = 20,01The carbon fraction can be calculated from its chemical formula or be measured by elemental analysis of each constituent. The relative mass of biobased and fossil-based carbon in a copolymer can b
