“ Effect of Alkali Lignin on Heat of Fusion, Crystallinity and Melting Points of Low Density polyethylene(LDPE), Meduim Density polyethylene(MDPE) and High Density polyethylene(HDPE)”. University of Thi-Qar Journal of Science 2, no. 2 (April 27, 2010): 89–95. Accessed December 26, 2024. http://mail.jsci.utq.edu.iq/index.php/main/article/view/354.