Physiochemical Characterization of Graft Copolymerization of Acrylamide and Acrylonitrile onto Sodium Alginate by Ceric-Ion/Allyl Alcohol Redox Pair

Physiochemical Characterization of Graft Copolymerization of Acrylamide and Acrylonitrile onto Sodium Alginate by Ceric-Ion/Allyl Alcohol Redox Pair | 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 Physiochemical Characterization of Graft Copolymerization of Acrylamide and Acrylonitrile onto Sodium Alginate by Ceric-Ion/Allyl Alcohol Redox Pair BABAJIDE MICHAEL ODEJOBI, Ighodalo Clement Eromosele, Catherine Oluyemise Eromosele This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7707033/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 Sodium alginate, was chemically modified via graft copolymerization with acrylamide and acrylonitrile using a ceric ion allyl alcohol redox system in aqueous media. The synthesized graft copolymers were characterized using viscometry, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). FTIR confirmed the successful incorporation of acrylamide (3294 cm − 1 and 3064 cm − 1 ) and acrylonitrile functional groups (at 2383 cm − 1 for repeat unit) onto the sodium alginate backbone. SEM micrographs revealed distinct morphological changes, with sodium alginate-g-polyacrylamide showing uniform distribution while sodium alginate-g-polyacrylonitrile exhibited random surface deposition. Thermal stability studies indicated that the graft copolymers demonstrated improved overall resistance to decomposition compared with pristine sodium alginate, although the ungrafted polymer remained more stable at low weight loss (≤ 50%). These findings suggest that grafting enhanced the structural and thermal properties of sodium alginate and significantly broadened its potential application in flocculants, dye and paint thickeners, and other eco-friendly polymer-based industries. Sodium alginate Acrylamide Acrylonitrile Graft copolymerization FTIR SEM Thermal stability Full Text 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-7707033","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":528947619,"identity":"8d31a5f5-3490-48c6-abe1-d1890e92a9c9","order_by":0,"name":"BABAJIDE MICHAEL 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Pair","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Sodium alginate, Acrylamide, Acrylonitrile, Graft copolymerization, FTIR, SEM, Thermal stability","lastPublishedDoi":"10.21203/rs.3.rs-7707033/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7707033/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eSodium alginate, was chemically modified via graft copolymerization with acrylamide and acrylonitrile using a ceric ion allyl alcohol redox system in aqueous media. The synthesized graft copolymers were characterized using viscometry, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). FTIR confirmed the successful incorporation of acrylamide (3294 cm\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e and 3064 cm\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e) and acrylonitrile functional groups (at 2383 cm\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e for repeat unit) onto the sodium alginate backbone. SEM micrographs revealed distinct morphological changes, with sodium alginate-g-polyacrylamide showing uniform distribution while sodium alginate-g-polyacrylonitrile exhibited random surface deposition. Thermal stability studies indicated that the graft copolymers demonstrated improved overall resistance to decomposition compared with pristine sodium alginate, although the ungrafted polymer remained more stable at low weight loss (\u0026le;\u0026thinsp;50%). These findings suggest that grafting enhanced the structural and thermal properties of sodium alginate and significantly broadened its potential application in flocculants, dye and paint thickeners, and other eco-friendly polymer-based industries.\u003c/p\u003e","manuscriptTitle":"Physiochemical Characterization of Graft Copolymerization of Acrylamide and Acrylonitrile onto Sodium Alginate by Ceric-Ion/Allyl Alcohol Redox Pair","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-10-27 15:44:15","doi":"10.21203/rs.3.rs-7707033/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"0cd31677-a6a9-41e4-869e-67f573b4f173","owner":[],"postedDate":"October 27th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2025-12-24T21:22:50+00:00","versionOfRecord":[],"versionCreatedAt":"2025-10-27 15:44:15","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7707033","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7707033","identity":"rs-7707033","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}