繊維長の異なるセルロースナノファイバーを少量添加したタルク/ポリプロピレン樹脂複合材料の引張特性

抄録

This study examines the tensile properties of talc/polypropylene (PP) composites containing small amounts of cellulose nanofibers (CNFs). To form the interface between CNFs and PP, maleic acid polypropylene (MAPP) was filled in the matrix of composites. The surface of CNFs was coated with a hydrophobized agent (HA) that helps CNFs dispersion in PP. Two different length of CNFs were used as fillers (CNF-L have a length of 10μm or above, and diameters of 20nm. CNF-S have a length of about 1μm, and diameters of 20nm). Using twin-screw extruder operating at 150rpm and 200°C, talc/CNF/MAPP/PP composites was prepared by using melt-kneading. Tensile tests were carried out to assess the effect of talc and CNF content on the tensile properties of talc/CNF/MAPP/PP composites. The yield stress of talc/CNF/MAPP/PP composites was improved by 3% by adding a talc content of 10wt% and CNF-S content of 0.5wt%. The failure strain of talc/CNF/MAPP/PP composites was improved by 52% by adding a talc content of 10wt% and C-NFL content of 0.5wt%.