Valorization of an industrial organosolv–sugarcane bagasse lignin: Characterization and use as a matrix in biobased composites reinforced with sisal fibers

摘要: In the present study, main focus was characterization and application of by-product lignin isolated through an industrial organosolv acid hydrolysis process from sugarcane bagasse, aiming at production bioethanol. The characterized used to prepare phenolic-type resins. analysis confirmed that is HGS type, with a high proportion less substituted aromatic ring p-hydroxyphenyl units, which favors further reaction formaldehyde. lignin―formaldehyde resins were produce biobased composites reinforced different proportions randomly distributed sisal fibers. presence moieties in both fiber matrix increases their mutual affinity, as by SEM images, showed good adhesion biocomposite fiber/matrix interface. This turn allowed load transference fiber, leading impact strength (near 500 J m ―1 for 40 wt% fiber-reinforced composite). study demonstrates bagasse obtained bioethanol plant can be without excessive purification preparation lignocellulosic displaying mechanical properties.