Changes of Lignin Molecular Structures in a Modification of Kraft Lignin Using Acid Catalyst.

摘要: The purpose of this study is to modify lignin for better blending with general synthetic polymers. possible advantages by using modification would be cost reduction, physical properties, and biodegradability. In study, butyrolactone-modified (BLL) tetrahydrofuran-modified (THFL) were used aliphatic chain an acid-catalyzed esterification method in order mimic the relation lignin-carbohydrate-complex (LCC) cellulose. results several analyses indicated that was well modified. It confirmed modified as expected reaction sites modification, behaviors, varied reagent types. result X-ray diffraction analysis (XRD) lignin/polymer blends increased crystallinity due their good compatibility. can type alkyl miscibility gap between chain-matrix affected mechanical properties enormously fungi-degradable environment. From a new proposed, it found retains property substituted well. This could proper method.