Enhancement in fire retardancy of thermoplastic polyurethane: Effect of pentaerythritol derived phosphorous based bicyclic polymer on the flammability 

Enhancement in fire retardancy of thermoplastic polyurethane: Effect of pentaerythritol derived phosphorous based bicyclic polymer on the flammability | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Enhancement in fire retardancy of thermoplastic polyurethane: Effect of pentaerythritol derived phosphorous based bicyclic polymer on the flammability Shikha Shikha, Neelam Yadav Yadav This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4543386/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract 1-oxyphospha-4-hydroxymethyl-2,6,7-trioxabicyclo [2.2.2] octane (PEPA) was synthesized successfully in producing a PEPA-based monomer having an acrylate group and its polymers. Nuclear magnetic resonance (NMR), 1 H, and 31 P spectra were used to establish their structural integrity. Thermogravimetric analysis (TGA), the limited oxygen index (LOI), and the UL-94 test were used to examine the thermal characteristics and flame retardant behavior of the systems with 15 wt% of flame retardants (PhosPTPU 15 ). Thermoplastic polyurethane (TPU), the results reveal that LOI increases from 19–27.8% with incorporation of 15 wt% PhosPTPU 15 . SEM-EDX was used to evaluate the morphology of the TPU and its blend, which exhibits that with the incorporation of PhosPTPU 15 the blend showed compact morphology and supported the condensed phase mechanism of the blends. Flame retardants Phosphorous Additive Thermal properties UL-94 Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4543386","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":317028542,"identity":"fb08e2b3-bf56-4c7c-b2a8-22d5125fd4ca","order_by":0,"name":"Shikha Shikha","email":"data:image/png;base64,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","orcid":"","institution":"Dr. A.P.J. Abdul Kalam Technical University","correspondingAuthor":true,"prefix":"","firstName":"Shikha","middleName":"","lastName":"Shikha","suffix":""},{"id":317028543,"identity":"6116a4f9-9c9e-4c1a-8ccc-a48a0d665052","order_by":1,"name":"Neelam Yadav Yadav","email":"","orcid":"","institution":"Dr. A.P.J. 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Nuclear magnetic resonance (NMR), \u003csup\u003e1\u003c/sup\u003eH, and \u003csup\u003e31\u003c/sup\u003eP spectra were used to establish their structural integrity. Thermogravimetric analysis (TGA), the limited oxygen index (LOI), and the UL-94 test were used to examine the thermal characteristics and flame retardant behavior of the systems with 15 wt% of flame retardants (PhosPTPU\u003csub\u003e15\u003c/sub\u003e). Thermoplastic polyurethane (TPU), the results reveal that LOI increases from 19\u0026ndash;27.8% with incorporation of 15 wt% PhosPTPU\u003csub\u003e15\u003c/sub\u003e. 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