JEOL JSM-6100 SEM at a voltage of 10 kV was used to observe the surface of fibers before and after treatment. This SEM was also used to observe the fracture surface of the composites after tensile test.

11.3.3 GENERAL PROCEDURE FOR BURNING TESTS

A Govmark UL94 chamber was used to conduct burning tests. For each example, results are provided using numbers and the terms “NB” and “G.” The term “NB” means “no burning” and is an indication that there was no flame and no glow after removing the flame. “NB” represents excellent fire resistance as the sample did not continue to burn after the external flame source was removed, thus the sample was self-extinguishing. The term “G” means “glow” and is an indication that the sample continued to glow after removal of the flame. The numbers are the time in seconds that the sample continued to glow after removal of the flame.