Hydrophobization of lignocellulosic materials part II: chemical modification

Abstract Lignocellulosic materials with hydrophobic properties are of great interest for developing sustainable products that can be used in various applications such as packaging, water-repellent and self-cleaning materials, oil water separation or reinforcements biocomposite materials. The hydroxyl functional groups present cellulose provide the possibility to perform chemical modifications cellulosic substrates increase their hydrophobicity. This review is second part a comprehensive on hydrophobization lignocellulosic summarizes recent advances modification substrates. methods described this changes hydrophilicity range from small decrease initial substrate (contact angles below 90°) superhydrophobic above 150°). Additional attention has been paid whether limited surface if it occurs bulk material. We also discuss hydrophobized material packing oil/water purification. Graphical abstract