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Full text release has been delayed at the author's request until January 10, 2027

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Additive Manufacturing of Carbon Fiber/Graphene-Reinforced PDMS Composites: Insights into Microstructure, Mechanical Properties, and Wearable Devices Applications

Liu, Chang
http://orcid.org/0009-0009-5204-5028
http://rave.ohiolink.edu/etdc/view?acc_num=miami1736531730543619

Abstract Details

2025, Master of Science, Miami University, Mechanical Engineering.
Polydimethylsiloxane (PDMS), a versatile silicon-based polymer, is widely used in biomedical devices, microfluidic systems, wearable technology, and electronics due to its mechanical flexibility, optical clarity, electrical conductivity, and biocompatibility. However, its low Young's modulus and tensile strength limit its application in high-stress environments. To enhance its mechanical and functional properties, this study explores the incorporation of carbon fibers (CF) and graphene (Gr) as reinforcements. Despite the potential benefits of these nanomaterials, challenges such as aggregation, void formation, and poor interfacial bonding often compromise composite performance. This research integrates acoustic field (AF) technology into inkjet-based additive manufacturing (AM) to address these issues. The AF enhances material dispersion, reduces defects, and improves bonding between reinforcements and the PDMS matrix. The study evaluates the effects of CF and Gr reinforcements with AF treatment on the mechanical, microstructural, and dynamic properties of PDMS composites. Furthermore, it investigates the impact of different percentages of graphene content on the electrical resistance and mechanical properties graphene-reinforced-PDMS for wearable sensor applications. Results demonstrate that optimal graphene content balances dispersion and aggregation, thus, maximizing mechanical strength and electrical conductivity. By introducing AF-assisted AM, this study provides insights into producing high-performance PDMS composites for advanced applications, particularly in sensors and flexible electronics.
Muhammad Jahan (Advisor)
Yingbin Hu (Committee Member)
Zhijiang Ye (Committee Member)
Jinjuan She (Committee Member)
65 p.
Mechanical Engineering
Additive Manufacturing, Acoustic Field, Composite material, Graphene reinforced PDMS, Carbon Fiber reinforced PDMS

Recommended Citations

Citations

  • Liu, C. (2025). Additive Manufacturing of Carbon Fiber/Graphene-Reinforced PDMS Composites: Insights into Microstructure, Mechanical Properties, and Wearable Devices Applications [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1736531730543619

    APA Style (7th edition)

  • Liu, Chang. Additive Manufacturing of Carbon Fiber/Graphene-Reinforced PDMS Composites: Insights into Microstructure, Mechanical Properties, and Wearable Devices Applications. 2025. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1736531730543619.

    MLA Style (8th edition)

  • Liu, Chang. "Additive Manufacturing of Carbon Fiber/Graphene-Reinforced PDMS Composites: Insights into Microstructure, Mechanical Properties, and Wearable Devices Applications." Master's thesis, Miami University, 2025. http://rave.ohiolink.edu/etdc/view?acc_num=miami1736531730543619

    Chicago Manual of Style (17th edition)

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© 2025, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.