Sorption characteristics studies of eco-friendly polymer composites Vladimir Lebedev, Tetiana Tykhomyrova, Oleksandr Lytvynenko, Alla Grekova and Svitlana Avina E3S Web Conf., 280 (2021) 11001 Published online: 30 June 2021 DOI: 10.1051/e3sconf/202128011001