{"id":1334,"date":"2013-12-23T03:05:23","date_gmt":"2013-12-23T03:05:23","guid":{"rendered":"https:\/\/awta.swim.net.au\/news\/chemical-treatments-in-scoured-wool\/"},"modified":"2013-12-23T03:05:23","modified_gmt":"2013-12-23T03:05:23","slug":"traitements-chimiques-de-la-laine-lavee","status":"publish","type":"news","link":"https:\/\/awta.swim.net.au\/fr\/news\/chemical-treatments-in-scoured-wool\/","title":{"rendered":"Traitement chimique - Laine d\u00e9creus\u00e9e"},"content":{"rendered":"

LE TEST DE SOLUBILIT\u00c9 DES ALCALIS<\/em><\/p>\n

Le d\u00e9bouillissage de la laine peut souvent impliquer un certain nombre de traitements chimiques afin d'uniformiser sa couleur ou de lui conf\u00e9rer des propri\u00e9t\u00e9s suppl\u00e9mentaires pour am\u00e9liorer son utilisation pr\u00e9vue.<\/p>\n

Les tests de dommages reposent sur le principe que la laine pr\u00e9sente une solubilit\u00e9 accrue dans les solutions alcalines lorsqu'elle est agress\u00e9e par des agents oxydants ou r\u00e9ducteurs, des acides, ou expos\u00e9e \u00e0 la chaleur ou \u00e0 la lumi\u00e8re. La plupart des tests effectu\u00e9s sur la laine d\u00e9bouillie visent \u00e0 quantifier les dommages caus\u00e9s par le blanchiment au peroxyde d'hydrog\u00e8ne, un produit chimique couramment utilis\u00e9 pour donner \u00e0 la laine un aspect plus blanc.<\/p>\n

Norme de solubilit\u00e9 des alcalis\u00a0:<\/em> Cet essai est r\u00e9alis\u00e9 selon la m\u00e9thode d'essai IWTO DTM-4. Il consiste \u00e0 traiter un \u00e9chantillon de laine s\u00e8che dans de l'hydroxyde de sodium sous des conditions contr\u00f4l\u00e9es de temps, de temp\u00e9rature et de volume. La solubilit\u00e9 alcaline est calcul\u00e9e comme la perte de masse de l'\u00e9chantillon trait\u00e9, exprim\u00e9e en pourcentage de sa masse s\u00e8che.<\/p>\n

Les r\u00e9sultats rapport\u00e9s sont les suivants\u00a0:<\/p>\n

(a) Le pH de l'extrait aqueux<\/p>\n

(b) La solubilit\u00e9 alcaline individuelle de chaque \u00e9chantillon et le r\u00e9sultat moyen pour l'\u00e9chantillon<\/p>\n

Ce test est particuli\u00e8rement utile lorsqu'un \u00e9chantillon t\u00e9moin non trait\u00e9 est disponible et que la nature du traitement de l'\u00e9chantillon test\u00e9 est connue. Il ne fournit pas une mesure absolue des dommages, mais plut\u00f4t une indication de leur niveau relatif.<\/p>\n

T\u00e9l\u00e9charger \u2013 Fiche d\u2019information\u00a0:<\/strong> Le test de solubilit\u00e9 alcaline<\/a>\"PDF<\/span><\/span><\/p>\n

Pour plus d'informations<\/strong><\/span>\u2026pour les tests de solubilit\u00e9 des alcalis, contactez la NZWTA au +64 6 835 1086 ou envoyez-nous un courriel \u00e0 testing@nzwta.co.nz<\/a><\/p>\n

 <\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

LE TEST DE SOLUBILIT\u00c9 DE L'ALKALI La laine \u00e0 r\u00e9curer peut souvent faire l'objet d'un certain nombre de traitements chimiques afin d'uniformiser sa couleur ou de lui conf\u00e9rer des propri\u00e9t\u00e9s suppl\u00e9mentaires pour am\u00e9liorer...<\/p>","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"class_list":["post-1334","news","type-news","status-publish","hentry"],"acf":[],"yoast_head":"\nChemical Treatment - In Scoured Wool - AWTA Limited<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/awta.swim.net.au\/fr\/nouvelles\/traitements-chimiques-de-la-laine-lavee\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chemical Treatment - In Scoured Wool - AWTA Limited\" \/>\n<meta property=\"og:description\" content=\"THE ALKALI SOLUBILITY TEST Scouring wool can often involve a number of chemical treatments in order to standardise its colour or provide additional properties to impro\u2026\" \/>\n<meta property=\"og:url\" content=\"https:\/\/awta.swim.net.au\/fr\/nouvelles\/traitements-chimiques-de-la-laine-lavee\/\" \/>\n<meta property=\"og:site_name\" content=\"AWTA Limited\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/awta.swim.net.au\\\/fr\\\/news\\\/chemical-treatments-in-scoured-wool\\\/\",\"url\":\"https:\\\/\\\/awta.swim.net.au\\\/fr\\\/news\\\/chemical-treatments-in-scoured-wool\\\/\",\"name\":\"Chemical Treatment - 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