α-Cellulose-based films: effect of sodium lignosulfonate (SLS) incorporation on physicochemical and antibacterial performance

Abstract

A homogeneous α-cellulose lm was prepared by regeneration method from ZnCl 2 /CaCl 2 /cellulose mixed system and was further combined with sodium lignosulfonate (SLS) by crosslinking through interaction hydrogen bonds and "bridge linkages". The physicochemical and antibacterial performance of lms were all investigated and results showed that modi ed lms exhibited stronger tensile strength, higher thermal stability, lower hydrophilic effect, better UV shielding as compared with those of pure cellulose lm, and especially, better antibacterial ability derived from the presence of phenolic and sulfonate groups in SLS. This study proposed a simple and sustainable method for fabricating a multifunctional and environmentally friendly composite lm by using two main lignocellulose resources as raw materials. HighlightsA novel lignin-containing cellulose lm was fabricated via crosslinking.Superior tensile strength was obtained due to dense crosslinking structure.Excellent antibacterial effect was derived from inherent structure of SLS.

Recent progress in sulfur-containing technical lignin-based polymer composites

“…A composite film was prepared from α-cellulose/ ZnCl 2 /CaCl 2 along with lignosulfonate by crosslinking via intermolecular hydrogen bond and using succinic anhydride and triethanolamine as linkage bridge. The prepared film had improved mechanical strength, hydrophobicity, antibacterial properties, thermal stability as well as UV blocking properties [209]. A similar composite film was prepared from carboxylated cellulose nanofiber (CNF) and lignosulfonate.…”