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PhDthesis_liangyue.pdf (7.34 MB)

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Biobased Epoxy Composites: Sustainable Alternative for Advanced Materials

Yue, Liang
http://rave.ohiolink.edu/etdc/view?acc_num=case1522772226681193

Abstract Details

2018, Doctor of Philosophy, Case Western Reserve University, Macromolecular Science and Engineering.
This thesis focuses on exploring the potential of applying biobased epoxy resins as a more sustainable alternative for the currently used petroleum-derived epoxy. This work demonstrates the feasibility of replacing petroleum based epoxy resins for vacuum infusion of fiberglass mats with a new biobased formulation with 85wt% of diglycidyl ethers of either ethyl or pentyl diphenolate esters (DGEDP) mixed with 15wt% glycidyl ether of eugenol (GE). This new formulation shows suitably viscosity and gelation time for composite vacuum infusion processing while maintaining and in some cases exceeding the mechanical and thermal properties of the petroleum based systems. Furthermore, biobased nanocomposites reinforced with amine modified cellulose nanocrystals displaying increased thermo- mechanical properties could further extend the application of biobased epoxy resins. Moreover, a bacterial based porous cellulose nanofiber network was applied as reinforcement for the biobased epoxy matrix. These biobased composites with high mechanical performance but low density were fabricated in a two-step conventional method by impregnation of the bacterial cellulose network with the resin mixture, subsequent hot pressing and curing. This research work demonstrates the potential of biobased epoxy resins as well as their composites as a sustainable choice in the future. Additionally, another aspect of sustainability was addressed in this thesis by developing a method to reprocess and recycle thermoset materials based on the exchangeable transesterification reactions, characteristic of vitrimer chemistry. The epoxy permanent network becomes a dynamic network and could be processed again with conventional processing techniques like compression molding, extrusion and injection molding. The developed methodology promises recycling and reprocessing of waste thermoset materials.
Manas-Zloczower Ica (Advisor)
Schiraldi David (Committee Member)
Feke Donald (Committee Member)
Maia Joao (Committee Member)
162 p.
Polymers

Recommended Citations

Citations

  • Yue, L. (2018). Biobased Epoxy Composites: Sustainable Alternative for Advanced Materials [Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1522772226681193

    APA Style (7th edition)

  • Yue, Liang. Biobased Epoxy Composites: Sustainable Alternative for Advanced Materials . 2018. Case Western Reserve University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1522772226681193.

    MLA Style (8th edition)

  • Yue, Liang. "Biobased Epoxy Composites: Sustainable Alternative for Advanced Materials ." Doctoral dissertation, Case Western Reserve University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1522772226681193

    Chicago Manual of Style (17th edition)

case1522772226681193
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© 2018, some rights reserved.Creative Commons License Biobased Epoxy Composites: Sustainable Alternative for Advanced Materials by Liang Yue is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.