{"id":3463,"date":"2015-02-03T08:00:29","date_gmt":"2015-02-03T13:00:29","guid":{"rendered":"http:\/\/admin.acceleratingscience.com\/?p=3463"},"modified":"2026-04-13T09:59:18","modified_gmt":"2026-04-13T14:59:18","slug":"plastic-and-polymer-problems-check-the-symptoms-part-1","status":"publish","type":"post","link":"https:\/\/www.thermofisher.com\/blog\/materials\/plastic-and-polymer-problems-check-the-symptoms-part-1\/","title":{"rendered":"Plastic and Polymer Problems? Check The Symptoms \u2013 Part 1"},"content":{"rendered":"

\"FindEditor’s Note: \u00a0Do you need to analyze polymers for product quality assurance and quality control verification, failure analysis, deformulation, or product development? There are a variety of molecular spectroscopy techniques and applications that can help in your analysis — from Near Infrared (NIR)<\/a> technology, Fourier Transform Infrared Spectroscopy (FTIR)<\/a> and Fluorescence<\/a>, to Raman<\/a> and Ultraviolet-Visible and Visible Spectrometry<\/a>. But if your sample is especially challenging, your first step might be to analyze the problem itself.\u00a0<\/em><\/p>\n

We\u2019ll spend every Tuesday in February identifying three plastic and polymer problems, suggesting how to analyze the sample, and then recommending some spectroscopy solutions to help your analysis.\u00a0 Here are the first three problems:<\/em><\/p>\n

Symptom 1:\u00a0 Bloom<\/span><\/p>\n

Bloom refers to discolorations on polymers from phase separation of the material’s components and is caused by the incompatibility of certain additives with the polymer or other ingredients such as the migration of solid or liquid compounding materials which have a limited solubility in the polymer matrix. The best way to test this type of sample is to scrape material from the surface, then measure by single-bounce Attenuated Total Reflectance (ATR) sampling.\u00a0 Attenuated total reflection (ATR)<\/a> is now the most common sampling technique in FT-IR spectroscopy.\u00a0 It allows you to quickly analyze polymer samples directly for identification or verification of bulk properties such as blend ratio. \u00a0Your data analysis plan should include searching libraries for identifying the unknown material and adjusting the formulation based on identified material. An FT-IR Spectrometer<\/a> — fitted with an Attenuated Total Reflectance (ATR) sampling accessory<\/a> designed for use with a single bounce diamond crystal \u2013 is an appropriate instrument for this kind of analysis.\u00a0 Make sure the instrument utilizes software composed of spectral identification tools, interpretation algorithms, and scientific documentation that indexes the information.<\/p>\n

Symptom 2:\u00a0 Hazing, Streaking, Incorrect Color<\/span><\/p>\n

Improper formulation of additives or fillers, contamination, or poor mixing can result in hazing, streaking, or incorrect color.\u00a0 Make sure you measure directly or excise outer or inner material from sample.\u00a0 For best measurement, use a diamond ATR Mid-IR or Far-IR for inorganic fillers.\u00a0 To identify the problem, your data analysis plan should include comparisons to reference part data and search of libraries to identify differences.\u00a0 You should also change formulation if appropriate.\u00a0 We would recommend using an FT-IR Spectrometer<\/a> \u2013 with built-in diamond ATR accessory, a solid-substrate beamsplitter, and the appropriate software with spectral identification tools, interpretation algorithms, and scientific documentation that indexes the information.<\/p>\n

Symptom 3:\u00a0 Oily, Tacky Surface<\/span><\/p>\n

Improper additive formulation or contamination could cause an oily or tacky surface. In order to measure the sample, you should wipe or scrape the surface to isolate material or direct analysis.\u00a0 Then you can measure the residue or sample surface on single bounce ATR as well as measure a reference part or sample with surface cut off.\u00a0 To identify the problem, your data analysis plan should include searching libraries to identify the material and adjusting the formulation or changing the process to avoid contamination. Like the Bloom problem, an FT-IR Spectrometer<\/a> — fitted with an Attenuated Total Reflectance (ATR) sampling accessory<\/a>\u2013 is an appropriate instrument for this kind of analysis.\u00a0 A monolithic diamond ATR crystal<\/a> and high-efficiency, all-reflective optics in combination with a variety of interchangeable crystal plates is recommended.\u00a0 As with all the above instruments, make sure the software is composed of spectral identification tools, interpretation algorithms, and scientific documentation that indexes the information.<\/p>\n

Visit our online <\/em>polymer spectroscopy resource center<\/em><\/a> to learn how you can analyze these and other polymer problems.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Editor’s Note: \u00a0Do you need to analyze polymers for product quality assurance and quality control verification, failure analysis, deformulation, or product development? There are a variety of molecular spectroscopy techniques and applications that can help in your analysis — from Near Infrared (NIR) technology, Fourier Transform Infrared Spectroscopy (FTIR) and Fluorescence, to Raman and Ultraviolet-Visible<\/p>\n","protected":false},"author":176,"featured_media":3841,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[958,972,961,21,968],"tags":[955],"division":[],"class_list":{"0":"post-3463","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-failure-analysis","8":"category-infrared-spectroscopy","9":"category-process-control","10":"category-quality-control-and-assurance-verification","11":"category-spectroscopy-spectrometry","12":"tag-polymer-plastics","13":"entry"},"_selected_authors":[],"_selected_reviewers":[],"acf":[],"yoast_head":"\nHave a Blooming, Streaking, or Tacky Polymer Problem?<\/title>\n<meta name=\"description\" content=\"Visit our online polymer spectroscopy resource center to learn how you can analyze these and other polymer problems.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thermofisher.com\/blog\/materials\/plastic-and-polymer-problems-check-the-symptoms-part-1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Plastic and Polymer Problems? 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