Abdullah, A. ., Jaffer , H. ., & AL-Shamri, Z. . . (2025). The effect of annealing on the energy gap of Polyimide (PI) and Polyethylene terephthalate (PET) Polymers. Iraqi Journal of Science, 46(1), 141-144. https://doi.org/10.24996/ijs.2005.46.1.%g