KOMAR RONI; SUTOPO; RUSYDI, Nur Muhammad. The Effect of Alkali Treatment Duration on the Tensile Strength and Physical Properties of Polyester Composites Reinforced with Coconut Fiber. Journal of Vocational Applied Research and Studies, [S. l.], v. 2, n. 2, p. 104–111, 2025. DOI: 10.21831/jvars.v2i2.2522. Disponível em: https://journal.uny.ac.id/publications/jvars/article/view/2522. Acesso em: 17 jan. 2026.