Structure of modelified natural fibers used for the preparation of composites with polypropylene

摘要

Short flax fibes as the reinforcing material to PP/flax composite were mercerized and modifed by silane compunds. Polymorphism transformation in the crystal structure of cellulose as an effect of chemical treatment of flax fiberes was studied by means of wide-angle X-ray scattering (WAXS) method. It was found that after mercerization process only a part of cellulose I was transformed into the cellulose II and silane treatment does not change the sturcture of the flax fibers. In the paper, based on WAXS measurement, a method of defining the amount of the cellulose I and the cellulose II was proposed.