Singsang, W., Suetrong, J., Choedsanthia, T., Srakaew, N.L.- ong, Jantrasee, S. and Prasoetsopha, N. 2021. Properties of Biodegradable Poly(butylene succinate) Filled with Activated Carbon Synthesized from Waste Coffee Grounds. Journal of Materials Science and Applied Energy. 10, 3 (Aug. 2021), 87–95.