• Login
    View Item 
    •   Home
    • Theses & Dissertations
    • 2017 - Mines Theses & Dissertations
    • View Item
    •   Home
    • Theses & Dissertations
    • 2017 - Mines Theses & Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Mines RepositoryCommunitiesPublication DateAuthorsTitlesSubjectsThis CollectionPublication DateAuthorsTitlesSubjects

    My Account

    Login

    Mines Links

    Arthur Lakes LibraryColorado School of Mines

    Statistics

    Display Statistics

    Design and characterization of bio-based polymer blends and composites

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Moran_mines_0052E_11363.pdf
    Size:
    2.594Mb
    Format:
    PDF
    Download
    Author
    Moran, Christopher S.
    Advisor
    Herring, Andrew M.
    Dorgan, John R.
    Date issued
    2017
    Keywords
    biopolymers
    polylactide
    thermoset
    composites
    bioplastics
    sustainability
    
    Metadata
    Show full item record
    URI
    https://hdl.handle.net/11124/171825
    Abstract
    Synthetic polymers derived from renewable resources offer opportunities to improve sustainability. Compared to their fossil fuel based counterparts, bio-based polymers may be designed to meet the same physical property requirements while reducing primary energy requirements and greenhouse gas emissions. Polymer blending and reinforcement by fibers in composites are established techniques to enhance physical properties. These techniques may be used to develop unique materials systems that broaden the application range of bio-based polymers. This thesis presents an evaluation of structure-property relationships in several blend systems incorporating commercially successful bio-based polymers of particular interest, then introduces a novel bio-based thermoset resin and evaluates its suitability for use in fiber reinforced composites. Miscibility is proved in blends of polyamide-4,10 and polyamide-6,10, enabling the ability to fine tune physical properties according to relative compositions using simple melt-mixing techniques. Quaternary blends of poly(L-lactide), poly(D-lactide), isotactic poly(methyl methacrylate), and syndiotactic methyl (methyl methacrylate) exhibit simultaneous stereocomplex crystallization and homopolymer crystallization within a single amorphous phase, and the presence of poly(methyl methacrylate) promotes stereocomplex formation in poly(lactide). To develop a bio-based thermoset resin, poly(lactide) is simultaneously cleaved into oligomers and functionalized with vinyl end-groups so that it may act as a cross-linking agent in a free-radical polymerization with methyl methacrylate. The low viscosity resin exhibits outstanding physical properties when cured and reinforced with unidirectional glass fiber composites.
    Rights
    Copyright of the original work is retained by the author.
    Collections
    2017 - Mines Theses & Dissertations

    entitlement

     
    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.