Segregation-driven assembly of graphite fluoride using polymethyl methacrylate beads for enhanced thermal conductivity in flexible PDMS composites

https://doi.org/10.31130/ud-jst.2025.23(6A).219E

Tóm tắt: 219 | PDF: 124

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Author

  • Mai Thi Kieu Lien
    The University of Danang - University of Science and Education, Vietnam
    Nguyen Thi My Duc
    The University of Danang - University of Science and Education, Vietnam
    Tran Thi Hong
    The University of Danang - University of Science and Education, Vietnam
    Trinh Ngoc Dat
    The University of Danang - University of Science and Education, Vietnam
    Nguyen Thanh Son
    The University of Danang - Advanced Institute of Science and Technology, Vietnam
    Nguyen Thanh Hoi
    The University of Danang - Center for Continuing Education, Vietnam
    Le Hong Nam
    The University of Danang - University of Science and Technology, Vietnam
    Tran Thi Thu Hien
    Hung Vuong Secondary School, Phan Thiet, Binh Thuan, Vietnam

Từ khóa:

Graphite fluoride
thermal conductivity
flexible polymer composites
PDMS
PMMA beads

Tóm tắt

Flexible thermal interface materials are crucial for soft electronics, yet enhancing thermal conductivity without sacrificing mechanical compliance remains challenging. Herein, we present a facile approach to improve heat dissipation in Ecoflex elastomers by inducing graphite fluoride (GF) segregation using polymethyl methacrylate (PMMA) beads as spatial templates. Composites were fabricated with varying PMMA bead sizes (5–50 μm) and GF loadings (10–20 wt%) to optimize filler network morphology and thermomechanical properties. Scanning electron microscopy revealed that 25 μm beads effectively promoted GF segregation into continuous domains. As a result, thermal conductivity reached up to 9.23 W/mK at 20 wt% GF. Real-device testing with surface-mounted LEDs demonstrated superior heat dissipation, significantly reducing steady-state temperatures. This study highlights the effectiveness of bead-induced segregation in engineering soft, thermally conductive composites. The resulting materials offer a promising solution for wearable electronics, flexible displays, and soft robotics where mechanical flexibility and thermal performance must be simultaneously achieved.

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Jun 30, 2025
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Lien, M. T. K., N. T. M. Duc, T. T. Hong, T. N. Dat, N. T. Son, N. T. . Hoi, L. H. Nam, và T. T. T. Hien. “Segregation-Driven Assembly of Graphite Fluoride Using Polymethyl Methacrylate Beads for Enhanced Thermal Conductivity in Flexible PDMS Composites”. Tạp Chí Khoa học Và Công nghệ Đại học Đà Nẵng, vol 23, số p.h 6A, Tháng Sáu 2025, tr 140-7, doi:10.31130/ud-jst.2025.23(6A).219E.

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