Green extraction of polyphenolic lignin using FeCl 3 -mediated tartaric acid-DES and its derived lignin nanoparticles for enhancing the application performance of PVA film in green agriculture

A green extraction system of polyphenol hydroxyl lignin with choline chloride as the hydrogen bond acceptor and tartaric acid and ferric chloride as hydrogen bond donors was designed. A green mulching film was prepared by compounding PVA.