Study On The Physical Properties Of Polypropylene/Silane Treated Cellulose Nano Fiber (Si-Cnf) Composites And Hydrophobization Of Si-Cnf

When cellulose nano fiber (CNF) is blended with polypropylene (PP), the dispersion and hydrophobization of CNF should be considered. In this paper, CNF 1 wt% slurry was treated by silane coupling agent (3-aminopropyl) triethoxysilane (APS) according to APS content. Chemical structures were confirmed through FTIR and XPS, and the degree of hydrophobization was investigated by water absorption index. In addition, the effect of the application of the silane coupling agent, PP-g-MAH, and CNF 30 wt% masterbatch on the dispersibility and physical properties of the PP/CNF composite was investigated. The physical properties of the composite were measured using a UTM and IZOD impact strength tester, and the viscoelastic properties according to the addition of CNF were measured using a dynamic rheometer. In addition, SEM was used to confirm the effect of improving compatibility by modification.