| 초록 |
Though cellulose fibers have several advantages as potential natural fillers the hydrophilic nature of the cellulose fibers limits their application to typically hydrophobic polymers. Therefore, in this study, to improve the hydrophobicity of cellulose fibers chemical modification of them using palm oil was performed. Hydrophobized cellulose fibers with attached palm oil content of 2.79 to 11.91 g per 20 g of original cellulose fibers were prepared. Polypropylene composites with 20% of each hydrophobized cellulose fibers were prepared by melt blending followed by compression molding. Mechanical properties of the PP composites were measured by DMA, UTM and izod impact tester. With increasing attached palm oil content the storage modulus and water absorption of the composite decreased but the impact strength and elongation at break increased. The PP composite with the hydrophobized cellulose fibers of attached palm oil content of 6.43 g showed optimum balanced mechanical properties. |
