| 초록 |
Microcrystalline cellulose (MCC) can be used as a potential natural filler for commodity polymers like polypropylene (PP). However, due to its hydrophilicity, dispersibility of MCC in a hydrophobic polymer matrix is very poor. Therefore, in this study, to improve hydrophobicity, MCC was modified by palm oil at 110 oC for 1 h. Hydrophobized MCC (H-MCC) with attached palm oil content of 4.4 to 22.6% was prepared. FTIR spectroscopy and wettability test were performed to confirm the hydrophobization of the MCC. Hygroscopicity of original and hydrophobized MCC was measured by TGA. With increasing attached palm oil content in H-MCC, hygroscopicity of the H-MCC decreased. Mechanical properties of PP/H-MCC (80/20) composites were investigated by UTM and izod impact tester. Impact strength of the PP/H-MCC composite increased with increasing attached palm oil content in H-MCC. The PP/H-MCC composite with the H-MCC of attached palm oil content of 11.89% showed optimum tensile properties. |
