{"id":5581,"date":"2023-09-14T18:23:28","date_gmt":"2023-09-14T16:23:28","guid":{"rendered":"https:\/\/www.nanomesurefrance.fr\/?page_id=5581"},"modified":"2024-01-24T11:56:44","modified_gmt":"2024-01-24T10:56:44","slug":"cenagg","status":"publish","type":"page","link":"https:\/\/www.nanomesurefrance.fr\/en\/projets\/cenagg\/","title":{"rendered":"CENAGG"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"5581\" class=\"elementor elementor-5581\">\n\t\t\t\t\t\t\t        <div class=\"elementor-section elementor-top-section elementor-element elementor-element-f1fad4a elementor-section-boxed elementor-section-height-default elementor-section-height-default cms-remove-row-no cms-section-no-padding-no cms-boxed-bg-false cms-section-boxed-divider-false cms-overlay-gradient-bg-yes cms-overlay-gradient-mode-tb\" data-id=\"f1fad4a\" data-element_type=\"section\">\n\t\t\n\t\t<div class=\"cms-overlay-gradient\"><\/div><div class=\"cms-section-boxed-bg\"><\/div><div class=\"cms-section-boxed-divider\"><\/div><div class=\"cms-elementor-section-remove\"><\/div><div class=\"cms-elementor-section-corner cms-elementor-section-corner-top\"><\/div><div class=\"cms-elementor-section-corner cms-elementor-section-corner-bottom\"><\/div>        <div class=\"elementor-container elementor-column-gap-default\" >\n\t\t        <div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e91c42b\" data-id=\"e91c42b\" data-element_type=\"column\">\n        <div class=\"elementor-widget-wrap elementor-element-populated\">\n                        \t\t<div class=\"elementor-element elementor-element-a2ca2a7 elementor-widget elementor-widget-image\" data-id=\"a2ca2a7\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.12.0 - 29-03-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"101\" height=\"80\" src=\"https:\/\/www.nanomesurefrance.fr\/wp-content\/uploads\/2023\/10\/logo-cen-blue-2.svg\" class=\"attachment-full size-full wp-image-8090\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t        <\/div>\n        <\/div>\n        \t\t        <\/div>\n        <\/div>\n\t\t        <div class=\"elementor-section elementor-top-section elementor-element elementor-element-11a476e pt-30 pt-lg-60 elementor-section-boxed elementor-section-height-default elementor-section-height-default cms-remove-row-no cms-section-no-padding-no cms-boxed-bg-false cms-section-boxed-divider-false cms-overlay-gradient-bg-yes cms-overlay-gradient-mode-tb\" data-id=\"11a476e\" data-element_type=\"section\">\n\t\t\n\t\t<div class=\"cms-overlay-gradient\"><\/div><div class=\"cms-section-boxed-bg\"><\/div><div class=\"cms-section-boxed-divider\"><\/div><div class=\"cms-elementor-section-remove\"><\/div><div class=\"cms-elementor-section-corner cms-elementor-section-corner-top\"><\/div><div class=\"cms-elementor-section-corner cms-elementor-section-corner-bottom\"><\/div>        <div class=\"elementor-container elementor-column-gap-default\" >\n\t\t        <div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-ec3596e\" data-id=\"ec3596e\" data-element_type=\"column\">\n        <div class=\"elementor-widget-wrap\">\n                                <\/div>\n        <\/div>\n                <div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-ce47fa6\" data-id=\"ce47fa6\" data-element_type=\"column\">\n        <div class=\"elementor-widget-wrap elementor-element-populated\">\n                        \t\t<div class=\"elementor-element elementor-element-32e6302 cms-heading-layout-13 elementor-widget elementor-widget-cms_heading\" data-id=\"32e6302\" data-element_type=\"widget\" data-widget_type=\"cms_heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"cms-heading-wrapper text-\">\n        <h3 class=\"cms-mainheading heading mt-n5 text-24  text-heading empty-none\"> <\/h3>\n    <div class=\"extra-space clearfix\"> <\/div>\n    <p class=\"cms-desc text-lg-16 text-xl-17 pt-10  text-body empty-none elementor-invisible animated-normal\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;animation_delay&quot;:&quot;&quot;}\">The questions of agglomeration and aggregation of nano-objects are key to many issues (nanomaterial performance, risk assessment, regulatory requirements) and at the heart of many discussions on the very definition of a \"nanomaterial\". <span class='tooltipsall tooltipsincontent classtoolTips1'>nanomaterial<\/span> in the regulatory field. <br \/>\n<br \/>\nDifferentiate between <span class='tooltipsall tooltipsincontent classtoolTips2'>Agglomeration<\/span> a <span class='tooltipsall tooltipsincontent classtoolTips4'>Aggregate<\/span> However, from an analytical point of view, they remain highly complex, the only difference being the more or less strong binding energy between the primary particles that make them up. This project to develop a European Technical Specification (<span class='tooltipsall tooltipsincontent classtoolTips12'>CEN<\/span>\/TS), piloted by the NPL (GB), started at the end of 2021 for a duration of 4 years within the Technical Committee 352 Nanotechnologies du <span class='tooltipsall tooltipsincontent classtoolTips12'>CEN<\/span> (European standardization). The aim is to produce a document giving recommendations on the analytical strategies to be implemented to differentiate agglomerates and aggregates in the case of different matrices (powders, colloidal suspensions, aerosols), while providing the advantages and limitations of the techniques currently available on the market.<br \/>\n<br \/>\n<\/p>\n    <div class=\"extra-space clearfix\"> <\/div>\n<\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t        <\/div>\n        <\/div>\n                <div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-6b36dcd\" data-id=\"6b36dcd\" data-element_type=\"column\">\n        <div class=\"elementor-widget-wrap\">\n                                <\/div>\n        <\/div>\n        \t\t        <\/div>\n        <\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<script type=\"text\/javascript\"> toolTips('.classtoolTips1','Il esiste plusieurs d\u00e9finition d\\'un <span class='tooltipsall tooltipsincontent classtoolTips1'>nanomat\u00e9riau<\/span>. <br\/>Selon l\\'<span class='tooltipsall tooltipsincontent classtoolTips13'>ISO<\/span> 8004-1: mat\u00e9riau ayant une dimension ext\u00e9rieure \u00e0 l\u2019\u00e9chelle nanom\u00e9trique  ou ayant une structure interne ou une structure de surface \u00e0 l\u2019\u00e9chelle nanom\u00e9trique.<br\/><br\/>Selon la recommandation de d\u00e9finition europ\u00e9enne C(2022) 3689:<br\/>On entend par \u00abnanomat\u00e9riau\u00bb un mat\u00e9riau naturel, form\u00e9 accidentellement ou manufactur\u00e9, constitu\u00e9 de particules solides qui sont pr\u00e9sentes soit individuellement soit en tant que particules constitutives identifiables dans des agr\u00e9gats ou des agglom\u00e9rats, 50 % au moins de ces particules, dans la r\u00e9partition num\u00e9rique par taille, r\u00e9pondant au moins \u00e0 l\u2019une des conditions suivantes:<br\/>(a) une ou plusieurs dimensions externes de la particule se situent dans la fourchette de 1 nm \u00e0 100 nm;<br\/>(b) la particule pr\u00e9sente une forme allong\u00e9e, telle que celle d\u2019un b\u00e2tonnet, d\u2019une fibre ou d\u2019un tube, deux dimensions externes \u00e9tant inf\u00e9rieures \u00e0 1 nm et l\u2019autre dimension sup\u00e9rieure \u00e0 100 nm;<br\/>(c) la particule pr\u00e9sente une forme de plaque, une dimension externe \u00e9tant inf\u00e9rieure \u00e0 1 nm et les autres dimensions sup\u00e9rieures \u00e0 100 nm.<br\/>Pour d\u00e9terminer la r\u00e9partition num\u00e9rique par taille des particules, il n\u2019est pas n\u00e9cessaire de prendre en consid\u00e9ration les particules ayant au moins deux dimensions externes orthogonales sup\u00e9rieures \u00e0 100 \u03bcm.<br\/>Un mat\u00e9riau pr\u00e9sentant une surface sp\u00e9cifique en volume inf\u00e9rieure \u00e0 6 m2\/cm3 n\u2019est toutefois pas consid\u00e9r\u00e9 comme un <span class='tooltipsall tooltipsincontent classtoolTips1'>nanomat\u00e9riau<\/span>.<br\/> Texte complet: https:\/\/eur-lex.europa.eu\/legal-content\/FR\/TXT\/HTML\/?uri=CELEX%3A32022H0614%2801%29'); <\/script><script type=\"text\/javascript\"> toolTips('.classtoolTips2','Selon l\\'ISO 8004-1 (2023) : ensemble de particules faiblement ou moyennement li\u00e9es, dont l\u2019aire de la surface externe r\u00e9sultante est similaire \u00e0 la somme des aires de surface de chacun des composants individuels'); <\/script><script type=\"text\/javascript\"> toolTips('.classtoolTips3','Selon l\\'ISO 8004-1 (2023) : portion discr\u00e8te de mat\u00e9riau dont une, deux ou les trois dimensions externes sont \u00e0 l\u2019\u00e9chelle nanom\u00e9trique'); <\/script><script type=\"text\/javascript\"> toolTips('.classtoolTips4','Selon l\\'<span class='tooltipsall tooltipsincontent classtoolTips13'>ISO<\/span> 8004-1 (2023): particule compos\u00e9e de particules fortement li\u00e9es ou fusionn\u00e9es, dont l\u2019aire de la surface externe r\u00e9sultante est significativement plus petite que la somme des aires de surface de chacun des composants<br\/>individuels'); <\/script><script type=\"text\/javascript\"> toolTips('.classtoolTips12','Comit\u00e9 Europ\u00e9en de Normalisation https:\/\/www.cencenelec.eu\/about-cen\/'); <\/script><script type=\"text\/javascript\"> toolTips('.classtoolTips13','Organisation internationale de normalisation: https:\/\/www.iso.org\/fr\/home.html'); <\/script>","protected":false},"excerpt":{"rendered":"<p>Les questions d\u2019agglom\u00e9ration et d\u2019agr\u00e9gation de nano-objets sont cl\u00e9s pour de multiples probl\u00e9matiques (performances de nanomat\u00e9riaux, \u00e9valuation des risques, exigences r\u00e9glementaires) et au centre de nombreuses discussions sur la d\u00e9finition m\u00eame d\u2019un nanomat\u00e9riau dans le champ r\u00e9glementaire. Pouvoir diff\u00e9rencier un Agglom\u00e9rat d\u2019un Agr\u00e9gat reste cependant tr\u00e8s complexe d\u2019un point analytique, la diff\u00e9rence \u00e9tant uniquement l\u2019\u00e9nergie de liaison plus ou moins forte entre les particules primaires qui les constituent. Ce projet de d\u00e9veloppement d\u2019une Sp\u00e9cification Technique europ\u00e9enne (CEN\/TS), pilot\u00e9 par le NPL (GB), a d\u00e9marr\u00e9 fin 2021 pour une dur\u00e9e de 4 ans au sein du Comit\u00e9 Technique 352 Nanotechnologies du CEN (normalisation europ\u00e9enne). L\u2019objectif est de produire un document donnant des recommandations sur les strat\u00e9gies analytiques \u00e0 mettre en \u0153uvre pour diff\u00e9rencier agglom\u00e9rats et agr\u00e9gats dans le cas de diff\u00e9rentes matrices (poudres, suspensions collo\u00efdales, a\u00e9rosols), tout en fournissant les avantages et limitations des techniques aujourd\u2019hui disponibles sur le march\u00e9.<\/p>","protected":false},"author":1,"featured_media":8408,"parent":5459,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5581","page","type-page","status-publish","has-post-thumbnail","hentry","cms-has-post-thumbnail"],"_links":{"self":[{"href":"https:\/\/www.nanomesurefrance.fr\/en\/wp-json\/wp\/v2\/pages\/5581","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nanomesurefrance.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.nanomesurefrance.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.nanomesurefrance.fr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nanomesurefrance.fr\/en\/wp-json\/wp\/v2\/comments?post=5581"}],"version-history":[{"count":0,"href":"https:\/\/www.nanomesurefrance.fr\/en\/wp-json\/wp\/v2\/pages\/5581\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.nanomesurefrance.fr\/en\/wp-json\/wp\/v2\/pages\/5459"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nanomesurefrance.fr\/en\/wp-json\/wp\/v2\/media\/8408"}],"wp:attachment":[{"href":"https:\/\/www.nanomesurefrance.fr\/en\/wp-json\/wp\/v2\/media?parent=5581"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}