A Mechanical Performance Study on FDM 3D Printed PLA and Chitosan Composite

A Mechanical Performance Study on FDM 3D Printed PLA and Chitosan Composite | 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 A Mechanical Performance Study on FDM 3D Printed PLA and Chitosan Composite Chandra Sekhar Patlola, Satyanarayana B., Malyadri T. This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7126635/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 An adaptable additive manufacturing method, fused deposition modeling (FDM) is especially useful for creating intricate geometries for use in biomedical applications. A composite filament with improved mechanical and biological properties is created in this study by reinforcing Polylactic Acid (PLA) with 2 weight percent chitosan nanoparticles (particle size: 30–50 µm). ASTM D-790 standards are followed when printing test specimens, and the most important process variables chosen are layer height, bed temperature, and nozzle temperature. 3-point bending tests are used to assess flexural strength. Under different print conditions, fracture behavior and surface morphology can be understood through micro structural analysis using Scanning Electron Microscopy (SEM) and 3D optical profilometry. The highest tensile strength of 12 MPa is obtained with a layer thickness of 0.2 mm. While SEM analysis shows a consistent fracture mode across various parameters and validates uniform dispersion of chitosan nanoparticles along the fracture surface, observations show that layer height has a significant impact on the bending response. PLA-chitosan composite tensile strength fused deposition modeling Full Text Additional Declarations No competing interests reported. Supplementary Files supplementaryfile.docx 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-7126635","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":527671921,"identity":"13144a88-1477-4b8f-ac46-9eca38958dcc","order_by":0,"name":"Chandra Sekhar 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