📅 23 September 2025
DOI: 10.26877/asset.v7i4.2052
Mechanical Properties of Epoxy Composite Reinforced with Spent Coffee Ground and Coffee Husk
Advance Sustainable Science, Engineering and Technology
Universitas Persatuan Guru Republik Indonesia Semarang
📄 Abstract
This study aims to investigate the effect of increasing the concentration of natural filler on the mechanical properties of Spent Coffee Ground (SCG) / Coffee Husk (CH) reinforced epoxy matrix composite. The materials used in this study are epoxy resin as a matrix and waste coffee grounds and coffee husks as natural fillers with sizes of 100-mesh and concentrations of 10, 20, and 30 wt.%. The results showed that SCG 10 wt.% produced the best mechanical properties compared to the other samples based on tensile strength (19.58 MPa), tensile modulus (1.70 GPa), flexural strength (44.55 MPa), and flexural modulus (2.32 GPa). On the other hand, CH 30 wt.% contributed the highest hardness value of 50.33 HRB compared to other samples. The findings in this study prove that the appropriate composition will affect the compatibility between the filler and the matrix, thus impacting the mechanical properties of the composite. This phenomenon can be seen based on microscope analysis, which shows a strong interaction between the matrix and filler and the formation of voids and agglomeration
🔖 Keywords
#Coffee ground; coffee husk; mechanical properties; natural filler; sustainable composites
ℹ️ Informasi Publikasi
Tanggal Publikasi
23 September 2025
Volume / Nomor / Tahun
Volume 7, Nomor 4, Tahun 2025
📝 HOW TO CITE
Etanto Heiliano Wijayanto; Imran, Al Ichlas; Siregar, Januar Parlaungan; Mohd Ruzaimi Mat Rejab; Tezara Cionita; Wisnu Prayogo; Deni Fajar Fitriyana; Rozanna Dewi; Thomas Junaedi; Agustinus Purna Irawan, "Mechanical Properties of Epoxy Composite Reinforced with Spent Coffee Ground and Coffee Husk," Advance Sustainable Science, Engineering and Technology, vol. 7, no. 4, Sep. 2025.
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