Mechanical properties of kenaf fiber-cement composites containing kenaf gamma-ray grafted with acrylamide

作者：Kim Du Yeong; Jeun Joon Pyo^*; Kim Hyun Bin; Kang Phil Hyun

来源：Journal of Wood Science, 2014, 60(4): 263-268.

DOI：10.1007/s10086-014-1406-2

• Gamma-ray
• Irradiation
• Grafting
• Kenaf
• Cement composite

Kenaf fibers have excellent properties and possess the potential to be outstanding reinforcing fillers in cement. The grafting of acrylamide to kenaf fibers is important in improving the compatibility between the fibers and the cement. Acrylamide was grafted onto kenaf fibers using gamma-ray radiation. The radiation dose ranged from 20 to 100 kGy, and the dose rate was 10 kGy/h. The degree of grafting increased with increased radiation doses. FT-IR analysis revealed an increase in amide content after gamma-ray-radiation-induced grafting, further evincing the attachment of acrylamide to the kenaf fibers. SEM images showed evidence of acrylamide grafting to the fiber surface. Contact angle measurements on individual fibers taken before and after grafting demonstrated changes in wettability. The mechanical properties of the gamma-ray-grafted kenaf fiber-cement composites were superior to those of the ungrafted kenaf fiber-cement specimens.

• 出版日期2014-8