Khalaf M. 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). UTJsci [Internet]. 2010 Apr. 27 [cited 2025 Apr. 7];2(2):89-95. Available from: http://mail.jsci.utq.edu.iq/index.php/main/article/view/354