| 초록 |
The use of a natural fiber with enhanced mechanical performance, as reinforcement in a cement has shown to be a promising opportunity. Fiber in cement serves crack arrestor which can create a stage of slow crack propagation and gradual failure. However, the incompatibility between the fibers and cement cause a weak interaction and limits the dispersion of fibers. Kenaf fiber modification by graft polymerization provides a significant route for altering its chemical properties. In this study, we have developed polymer modified natural fiber-based cement composite using radiation grafting technique. The grafting yield increased with increasing irradiation dose. FT-IR analysis revealed an increase in amide content after grafting polymerization, further evincing the attachment of acrylamide to the kenaf fibers. The mechanical properties of the acrylamide-grafted kenaf fiber reinforced cement composites were superior to those of the ungrafted kenaf fiber reinforced cement specimens. |
