Mukhlis Muslimin, Willy Artha Wirawan, Bambang Tjiroso, Tri Suyono, Ahmad Seng, Mohammad Muzni Harbelubun
The growing demand for eco-friendly construction materials underscores the need for sustainable composite materials with enhanced mechanical and acoustic properties. However, natural fiber composites often suffer from limited mechanical strength and durability, necessitating appropriate treatments to improve their performance. This study examines the impact of liquid smoke treatment on Sansevieria trifasciata Laurentii fiber (STLF) reinforced composites, applying immersion durations of 1, 2, and 3 hours, followed by heat treatment at 40℃ for 30 minutes. The findings reveal that the 2-hour treatment (P2J) resulted in the highest tensile strength (90.10 MPa), flexural strength (42.78 MPa), and modulus of elasticity (33.746 MPa), whereas the 3-hour treatment (P3J) achieved the highest impact strength (31.72 KJ/m3) and optimal sound absorption coefficient (0.771 dB). However, extending the treatment to 3 hours led to a decline in tensile and flexural strength, indicating that 2 hours is the optimal treatment duration for maximizing mechanical performance. This research confirms that liquid smoke treatment significantly enhances the mechanical and acoustic properties of STLF composites, establishing them as a promising sustainable material for soundproof room partitions. ©2025 The authors.
Mechanical Engineering Department, Universitas Khairun, Ternate, 97719, Indonesia; Applied Mechanical Engineering Study Program, Faculty of Vocational Studies, Universitas Negeri Surabaya, Wonokromo, 60231, Indonesia; Department of Aircraft Maintenance Engineering, Politeknik Penerbangan Surabaya, Wonocolo, 60236, Indonesia
