{"id":10753,"date":"2020-08-13T08:05:33","date_gmt":"2020-08-13T14:05:33","guid":{"rendered":"https:\/\/www.ulprospector.com\/knowledge\/?p=10753"},"modified":"2020-09-11T07:47:34","modified_gmt":"2020-09-11T13:47:34","slug":"pe-brilliant-white-polymers-without-pigments","status":"publish","type":"post","link":"https:\/\/ulprospector.ul.com\/10753\/pe-brilliant-white-polymers-without-pigments\/","title":{"rendered":"Brilliant White Polymers Without Pigments"},"content":{"rendered":"<p><strong><em><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-10759\" src=\"https:\/\/ulprospector.ul.com\/media\/2020\/07\/white-table-and-laptop-with-plant-iStock-1160883936-600x400-1-300x200.jpg\" alt=\"white table and laptop with plant - Learn more about brilliant white pigments\" width=\"300\" height=\"200\" srcset=\"https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2020\/07\/white-table-and-laptop-with-plant-iStock-1160883936-600x400-1-300x200.jpg 300w, https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2020\/07\/white-table-and-laptop-with-plant-iStock-1160883936-600x400-1.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Polymer foils that are extremely thin and characterized by a high light scattering rate are being produced by a new process. This inexpensive material may be applied industrially to various objects to give them an attractive white appearance. Moreover, the process can make products environmentally more compatible.<\/em><\/strong><\/p>\n<p>A brilliant white surface makes furniture and other objects appear clean, bright, and modern. So far, titanium dioxide has been the standard pigment used for white colouring of lacquers, paints, and plastics, as well as of cosmetics, foods, chewing gum, or pills. Titanium dioxide has a very high refractive index, so it reflects incident light almost completely.<\/p>\n<p>However, the pigment has a negative side. Its particles do not degrade and thus pollute the environment in the long term. In addition, there have been concerns that titanium dioxide could be harmful to health.<\/p>\n<p>While there is no perfect replacement for TiO2, there are a number of substitute chemical products which, if handled correctly, can improve the performance of products. For example, lithopone, a co-precipitated zinc sulfide and barium sulfate combination, can act as a cost-effective alternative for TiO2. Calcined kaolins are a practical ingredient that has been specifically designed for high PVC paint, providing significant cost savings.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-10756 size-full\" src=\"https:\/\/ulprospector.ul.com\/media\/2020\/07\/PropertiesOfSomeConventionalWhitePigments.jpg\" alt=\"Chart of Properties of Some Conventional White Pigments\" width=\"911\" height=\"425\" srcset=\"https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2020\/07\/PropertiesOfSomeConventionalWhitePigments.jpg 911w, https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2020\/07\/PropertiesOfSomeConventionalWhitePigments-300x140.jpg 300w, https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2020\/07\/PropertiesOfSomeConventionalWhitePigments-768x358.jpg 768w\" sizes=\"(max-width: 911px) 100vw, 911px\" \/><\/p>\n<p>Titanium dioxide will remain the key ingredient for so many products requiring whiteness. But with prices showing no sign of decreasing, or even stabilising, chemical suppliers will need to be increasingly creative with the products they provide and the range of functional fillers and extender pigments they make available.<\/p>\n<p>An innovative approach to solving this problem comes from biomimetics &#8211; materials and other technologies which are inspired by nature, the intention being to understand and imitate these natural events to make them technically usable.<\/p>\n<figure id=\"attachment_10757\" class=\"thumbnail wp-caption alignright\" style=\"width: 300px\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-10757\" src=\"https:\/\/ulprospector.ul.com\/media\/2020\/07\/2020_020_Bionische-Oberflaechen_72dpi-003.jpg\" alt=\"Photo of the white beetle Cyphochilus insulanus - Learn more about brilliant white pigments\" width=\"300\" height=\"200\" \/><figcaption class=\"caption wp-caption-text\">A nanostructured polymer film modelled on the white beetle Cyphochilus insulanus produces a brilliant white coating. (Photo: Julia Syurik, KIT)<\/figcaption><\/figure>\n<p>A process developed by KIT\u2019s Institute of Microstructure Technology (IMT) is inspired by the white beetle <em>Cyphochilus insulanus<\/em>, whose chitin scales appear white thanks to their special nanostructure. Based on this model, solid porous nanostructures, which resemble a sponge, are produced from polymers. This nanostructured polymer film produces a brilliant white coating.<\/p>\n<p>\u201cWe avoid the use of pigments that are harmful to health and the environment by producing porous polymer structures of comparably high scattering efficiency,\u201d says Professor Hendrik H\u00f6lscher of IMT. \u201cBased on this model, we have produced polymer-based solid, porous nanostructures, which resemble a sponge.\u201d<\/p>\n<p>The structure scatters light in a similar way to the bubbles of shaving or bathing foam, which makes the material appear white. \u201cThe polymer foils produced by our process are extremely thin, flexible and light, but still mechanically stable and can be applied industrially to a variety of products,\u201d adds H\u00f6lscher. At a thickness of 9\u00b5m, the newly developed polymer foil reflects more than 57% of the incident light. 80 to 90% can be achieved by increasing the thickness of the foil. In the course of the development work, the sponge-like microstructure was applied to acrylic plastics. However, the process may be transferred to many other polymers.<\/p>\n<p>&#8220;As a next step, we plan to produce particles &#8211; small beads that are added to other materials,&#8221; H\u00f6lscher adds.<\/p>\n<h3>References<\/h3>\n<p>New Materials: Brilliant White without Pigments &#8211; <a href=\"https:\/\/www.kit.edu\/kit\/english\/pi_2020_020_new-materials-brilliant-white-without-pigments.php\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/www.kit.edu\/kit\/english\/pi_2020_020_new-materials-brilliant-white-without-pigments.php<\/a><\/p>\n<p>Whiter than white: options for the Compounder. Plastics Additives and Compounding, October 2002 &#8211; <a href=\"https:\/\/fdocuments.in\/document\/whiter-than-white-options-for-the-compounder.html\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/fdocuments.in\/document\/whiter-than-white-options-for-the-compounder.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Polymer foils that are extremely thin and characterized by a high light scattering rate are being produced by a new process. This inexpensive material may be applied industrially to various objects to give them an attractive white appearance. Moreover, the &hellip; <a href=\"https:\/\/ulprospector.ul.com\/10753\/pe-brilliant-white-polymers-without-pigments\/\">Continued<\/a><\/p>\n","protected":false},"author":22,"featured_media":10759,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"episode_type":"","audio_file":"","podmotor_file_id":"","podmotor_episode_id":"","cover_image":"","cover_image_id":"","duration":"","filesize":"","filesize_raw":"","date_recorded":"","explicit":"","block":"","itunes_episode_number":"","itunes_title":"","itunes_season_number":"","itunes_episode_type":"","footnotes":""},"categories":[21],"tags":[],"ppma_author":[1238],"class_list":{"0":"post-10753","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-plastics-2","8":"entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Brilliant White Polymers Without Pigments - Prospector Knowledge Center<\/title>\n<meta name=\"description\" content=\"Polymer foils are inexpensive and give products an attractive white appearance. 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Having originally qualified as a metallurgist at Cambridge University, Andy spent a period as a consultant, where he specialised in advanced composites, asbestos substitutes and the methodology of materials selection, subjects on which he has published several books and technical papers. Since the early 1980s, he has edited many of the leading manufacturing and engineering titles in the UK, firstly cutting his teeth as a technical journalist on Design Engineering. Known as \"The Materials Man\", he covered many of the early innovations in engineering plastics. He was promoted to editor in 1985 and subsequently moved on to edit Engineering magazine (1992), and Industrial Technology (1994). In 1999, with former colleagues, he launched Pro-Talk, which founded the first online publications for engineers in Europe - the then thriving business was sold to Centaur Publications in 2006. Since then, Andy has continued to publish online, including his own title New Materials International (www.newmaterials.com). He is also a regular contributor to many specialist engineering titles in the UK and Europe, including Controls, Drives &amp; Automation (CDA), Engineering &amp; Technology (E&amp;T), and Environmental Technology. As technology companies strive to manage their own websites, they are recognising the need to develop their writing and editing resources. Andy now works directly for companies in the manufacturing sector, delivering technical content through this medium for their current and prospective customers. Working with end users, PR agencies and website designers, this business is growing rapidly and Andy is aactively building a team of expert writers to fufil the demand for feature articles, news items and white papers.","sameAs":["http:\/\/www.ulprospector.com"],"url":"https:\/\/ulprospector.ul.com\/author\/andy-pye\/"}]}},"authors":[{"term_id":1238,"user_id":22,"is_guest":0,"slug":"andy-pye","display_name":"Andy Pye","avatar_url":"https:\/\/ulprospector.ul.com\/media\/2017\/10\/Andy-Pye_avatar_1508792576-96x96.jpg","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/posts\/10753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/comments?post=10753"}],"version-history":[{"count":0,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/posts\/10753\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/media\/10759"}],"wp:attachment":[{"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/media?parent=10753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/categories?post=10753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/tags?post=10753"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/ppma_author?post=10753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}