Author(s)

S. Ochi, H. Takagi & R. Niki

Abstract

Tensile properties of heat-treated hemp and bamboo fibers were examined. The average tensile strengths of hemp and bamboo fibers without heat treatment are 863 MPa and 516 MPa, respectively. After heat treatment at 200 0c for 7.2ks, both fibers show a 60 percent decrease in tensile strength. The tensile strength of hemp fiber isalmost unchanged below 160 0c, however it decreases drastically above this temperature. The bamboo fiber also has the same temperature dependence, but its degradation temperature decreases to 140 0c. Young's moduli for both fibers are almost constant and independent of tie heat treatment condition.

Keywords