{"id":289,"date":"2017-11-23T12:32:48","date_gmt":"2017-11-23T12:32:48","guid":{"rendered":"http:\/\/www.electronicartist.net\/work_space\/?p=289"},"modified":"2021-02-15T13:12:36","modified_gmt":"2021-02-15T13:12:36","slug":"methods-chemistry-of-natural-dyes-pigments","status":"publish","type":"post","link":"https:\/\/www.electronicartist.net\/work_space\/methods-chemistry-of-natural-dyes-pigments\/","title":{"rendered":"METHODS: chemistry of natural dyes &#038; pigments"},"content":{"rendered":"<p>ASCUS, Edinburgh<br \/>\n2016<br \/>\nDr. Ryan Lewis<\/p>\nngg_shortcode_0_placeholder\n<p>1. Preparing Cotton for dying<br \/>\nCleansed of natural oils and wax, natural cotton and string was labelled and immersed in 70\u00b0C bath of a choice of 4 mordants for 30mins:<br \/>\na. water<br \/>\nb. copper solution<br \/>\nc. iron solution<br \/>\nd. aluminium sulphate<\/p>\n<p>These &#8216;mordants&#8217; help to bind dyes to the cotton and string.<\/p>\n<p>2. Preparing natural materials for use as dyes<br \/>\na. 4g of natural materials (ground as much as (possible)<br \/>\nb. They were placed in a vessel and 50 ml &#8216;extraction&#8217; solution with different ph values were chosen and added to the natural materials.<br \/>\nc. They were &#8216;heat extracted&#8217; by placing in the microwave for 3mins or 70\u00b0C bath for 20mins.<\/p>\n<p>image ref sample 1. Avocado stone, aluminium sulphate, ph 9.5<br \/>\nimage ref sample 2. Pomegranate rind, iron solution, ph 2<br \/>\nimage ref sample 3. Pomegranate rind-fine, iron solution, ph 4.5<br \/>\nimage ref sample 4. Avocado rind, copper solution, ph 12<\/p>\n<p>3. Dying Cotton<br \/>\na. Filter extracted dye with a piece of muslin in a funnel filter the dyes into a clean vessel.<br \/>\nb. Wash cotton and string samples and place in dye vessel<br \/>\nc. Heat samples in the water bath for 30mins.<br \/>\nd. Wash and dry samples after 30mins.<\/p>\n<p>Colours and intensity varied- samples could have been left longer in stage 3. A natural \/ chemical &#8216;fixative&#8217; could be applied.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ASCUS, Edinburgh 2016 Dr. Ryan Lewis 1. Preparing Cotton for dying Cleansed of natural oils&hellip;<\/p>\n","protected":false},"author":1,"featured_media":327,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[2,18],"tags":[37],"class_list":["post-289","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diy-bio","category-dyes","tag-methods"],"_links":{"self":[{"href":"https:\/\/www.electronicartist.net\/work_space\/wp-json\/wp\/v2\/posts\/289","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.electronicartist.net\/work_space\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.electronicartist.net\/work_space\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.electronicartist.net\/work_space\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.electronicartist.net\/work_space\/wp-json\/wp\/v2\/comments?post=289"}],"version-history":[{"count":4,"href":"https:\/\/www.electronicartist.net\/work_space\/wp-json\/wp\/v2\/posts\/289\/revisions"}],"predecessor-version":[{"id":638,"href":"https:\/\/www.electronicartist.net\/work_space\/wp-json\/wp\/v2\/posts\/289\/revisions\/638"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.electronicartist.net\/work_space\/wp-json\/wp\/v2\/media\/327"}],"wp:attachment":[{"href":"https:\/\/www.electronicartist.net\/work_space\/wp-json\/wp\/v2\/media?parent=289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.electronicartist.net\/work_space\/wp-json\/wp\/v2\/categories?post=289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.electronicartist.net\/work_space\/wp-json\/wp\/v2\/tags?post=289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}