| 초록 |
Interfacial evaluation and the durability of modified Jute fibers/PP composites were investigated by micromechanical test. After boiling water test, tensile strength and interfacial shear strength (IFSS) between Jute fibers and PP matrix decreased due to the deterioration of swelled fibrils. IFSS between silane-treated Jute fiber and PP matrix was higher than others. Surface energies were obtained by dynamic contact angle measurement. Since hemicellulose and lignin could be removed from Jute fiber after boiling water test, Jute fiber surface became more hydrophilic and surface roughness increased. With water present, the work of adhesion did not only decrease but they were negative, which indicates the instability of the interfacial system. Ackowledgement: Kim, Pyung-Gee is grateful to the second stage of BK21 propram for suporting a fellowship. |
