Zakaria, S. H. ., & Asman, S. . (2026). Thermal Degradation and Fourier Transform Infrared Spectroscopy Characterization of Polypropylene under Multiple Mechanical Recycling Cycles. Enhanced Knowledge in Sciences and Technology, 6(1), 39-49. https://periodical.uthm.edu.my/index.php/ekst/article/view/23665