Flame Retardant Nanocomposites of Polystyrene-Modified Sepiolite Clay Shafi Ur Rehman, Sana Javaid, Muhammad Shahid, Tariq Yasin and Badar Rashid MATEC Web Conf., 381 (2023) 02002 Published online: 13 June 2023 DOI: 10.1051/matecconf/202338102002