M. Shaalan Y, El-Sayed MA, Khamis A. ICATAS23-A Study of Repetitive Recycling of Polypropylene Waste: A Quality Evaluation and Economic Assessment. J. Adv. Res. Appl. Sci. Eng. Tech. [Internet]. 2024 Dec. 19 [cited 2025 Mar. 26];62(3):130-8. Available from: https://semarakilmu.com.my/journals/index.php/applied_sciences_eng_tech/article/view/7023