TY - BOOK AU - Gomaa E AU - MOhamed M AU - Mohsen M AU - Mostafa N TI - A Study on some properties of polyethylene-nitrile rubber blend by positron annihilation lifetime spectroscopy PY - 2004/// PB - Journal of Polymer Materials KW - Free-volume distribution KW - Nitrile rubber KW - Polyethylene KW - Positron annihilation ER -