{"id":364008,"date":"2024-10-20T01:48:34","date_gmt":"2024-10-20T01:48:34","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-240762021\/"},"modified":"2024-10-26T02:51:24","modified_gmt":"2024-10-26T02:51:24","slug":"bs-iso-240762021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-240762021\/","title":{"rendered":"BS ISO 24076:2021"},"content":{"rendered":"

This document specifies a relative method for the determination of polypropylene (PP) isotactic index by low-resolution pulsed nuclear magnetic resonance spectroscopy (LR-NMR).<\/p>\n

This method enables the identification and coding of types H propylene (PP-H) plastics according to ISO 19069-1<\/span><\/span>.<\/p>\n

This method is suitable for base polymers and is not applicable for mixtures.<\/p>\n

\n
\n NOTE\n <\/div>\n

The direct method for the determination of polypropylene isotactic index is specified in ISO 9113<\/span><\/span> .<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions
4 Principle <\/td>\n<\/tr>\n
10<\/td>\n5 Apparatus
6 Preparation of sample
6.1 General
6.2 Reference samples
7 Method A \u2014 Ratio method
7.1 Procedure
7.1.1 Measurement of reference samples by n-heptane extraction <\/td>\n<\/tr>\n
11<\/td>\n7.1.2 LR-NMR measurement procedure of reference samples
7.1.3 LR-NMR measurement procedure of test samples
7.2 Calculation
7.2.1 Calibration curve
7.2.2 Calculation of isotactic index IIna <\/td>\n<\/tr>\n
12<\/td>\n8 Method B \u2014 Absolute method
8.1 Procedure
8.1.1 Measurement of reference samples by n-heptane extraction
8.1.2 LR-NMR measurement procedure of reference samples
8.1.3 LR-NMR measurement procedure of test samples
8.2 Calculation
8.2.1 Calibration curve <\/td>\n<\/tr>\n
13<\/td>\n8.2.2 Calculation of isotactic index IInb
9 Expression of results
10 Test report <\/td>\n<\/tr>\n
14<\/td>\nAnnex A (informative) Example of a calibration curve for method A <\/td>\n<\/tr>\n
15<\/td>\nAnnex B (informative) Example of a calibration curve for method B <\/td>\n<\/tr>\n
16<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Plastics. Polypropylene (PP). Determination of isotactic index by low-resolution nuclear magnetic resonance spectrometry<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n18<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":364017,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1179,2641],"product_tag":[],"class_list":{"0":"post-364008","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-83-080-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/364008","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/364017"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=364008"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=364008"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=364008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}