{"id":3467,"date":"2015-02-24T08:00:16","date_gmt":"2015-02-24T13:00:16","guid":{"rendered":"http:\/\/admin.acceleratingscience.com\/?p=3467"},"modified":"2026-04-10T14:12:34","modified_gmt":"2026-04-10T19:12:34","slug":"plastic-and-polymer-problems-check-the-symptons-part-4","status":"publish","type":"post","link":"https:\/\/www.thermofisher.com\/blog\/materials\/plastic-and-polymer-problems-check-the-symptons-part-4\/","title":{"rendered":"Plastic and Polymer Problems? Check The Symptoms \u2013 Part 4"},"content":{"rendered":"

Editor’s Note:\u00a0<\/em>This is the last chapter of our February series that addresses problems found when analyzing polymers for product quality assurance and quality control verification, failure analysis, deformulation, and product development.\u00a0 Our last three symptoms involve warping, wear, and odor.\u00a0 Below are our spectroscopy analysis suggestions and recommendations for these issues.\u00a0<\/em>\"fourbottles\"
\n<\/em><\/p>\n

Symptoms 1-3<\/span><\/a><\/p>\n

Symptoms 4-6<\/a><\/span><\/p>\n

Symptoms 7-9<\/span><\/a><\/p>\n

Symptom\u00a010: \u00a0Warping<\/span><\/p>\n

Improper formulation or incorrect processing conditions (if nothing found wrong with formulation) could be the cause of warping.\u00a0 How do you analyze this type of symptom?\u00a0 You should measure directly using single-bounce Diamond, ZnSe or Ge (for carbon-filled polymers) Attenuated Total Reflection (ATR)<\/a>. ATR is a common sampling technique in FT-IR spectroscopy which enables you to quickly analyze polymer samples directly for identification or verification of bulk properties such as blend ratio.\u00a0 If your symptom is warping, you may have to cut away the top surface to expose the interior.\u00a0 To identify the problem, you should calculate peak height or area ratio, verify co-polymer ratios, and then adjust formulation and check ratios routinely. An FT-IR Spectrometer<\/a> with a diamond ATR accessory<\/a> is recommended for identification of principal ingredients of mixtures through innovative multi-component analysis.<\/p>\n

Symptom 11: \u00a0Wear, Premature Failure<\/span><\/p>\n

What could cause the wear or premature failure of a part?\u00a0 Wrong material or formulation, material failure, or extreme use conditions could be the culprit. To test the sample — similar to analyzing a warping problem — cut away the top surface to expose the interior and then measure directly using single-bounce Diamond, ZnSe or Ge (for carbon-filled polymers) Attenuated Total Reflection (ATR)<\/a>. However, you should also sample and reference the part on TGA-IR.\u00a0 A TGA-IR module<\/a> combines thermogravimetric analysis (TGA) with the identification power of an FT-IR spectrometer. TGA measures the change in sample weight as a function of temperature or time in a controlled atmosphere, which is usually accompanied by an evolution of gases caused by sample decomposition or volatilization. Identifying the evolved gas components helps determine sample characteristics that can\u2019t be verified using TGA alone.<\/p>\n

Symptom 12: \u00a0Odor\u00a0<\/span><\/p>\n

What could cause an odor problem? Oxidation, degradation, or contamination. If you find that your sample doesn\u2019t smell quite right, measure with a solvent extraction, and evaporate the solvent.\u00a0 Then measure the residue on an ATR or IR window.\u00a0 Finally, measure the sample and reference part on TGA-IR.\u00a0 To identify the problem, search libraries to identify the material or contamination, compare sample data to reference part data to identify differences, and then change the formulation if appropriate.\u00a0 The best way to do that is to use an FT-IR Spectrometer<\/a> that offers the highest confidence in materials identification and verification.\u00a0 Make sure the instrument utilizes a standard and high-sensitivity correlation algorithm to fit variability of tested materials and innovative multi-component analysis to identify principal ingredients of mixtures throughout the sample.\u00a0 The addition of a TGA-IR module can provide outstanding routine and research-level gas analysis.<\/p>\n

Do you have any other symptoms that have given you a challenge?\u00a0 Let us know below.<\/p>\n

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 Visit our online polymer spectroscopy resource center<\/a> to f<\/em>ind your symptom and learn how to solve the problem \u2013 from sample prep to data analysis<\/em>.<\/p>\n

\u00a0<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Editor’s Note:\u00a0This is the last chapter of our February series that addresses problems found when analyzing polymers for product quality assurance and quality control verification, failure analysis, deformulation, and product development.\u00a0 Our last three symptoms involve warping, wear, and odor.\u00a0 Below are our spectroscopy analysis suggestions and recommendations for these issues.\u00a0 Symptoms 1-3 Symptoms 4-6<\/p>\n","protected":false},"author":176,"featured_media":3897,"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":[972,961,21,968],"tags":[955],"division":[],"class_list":{"0":"post-3467","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-infrared-spectroscopy","8":"category-process-control","9":"category-quality-control-and-assurance-verification","10":"category-spectroscopy-spectrometry","11":"tag-polymer-plastics","12":"entry"},"_selected_authors":[],"_selected_reviewers":[],"acf":[],"yoast_head":"\nHave an Odor, Warping, or Failure 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-symptons-part-4\/\" \/>\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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