Effects of environmental conditions on mechanical and physical properties of flax fibers

The environmental degradation behaviour of flax fibers and their mechanical properties were investigated. Upgraded Duralin flax fibers, which have bee n treated by a novel treatment process for improved moisture and rot sensit ivity, were studied. Results showed that upgraded Duralin flax fibers absor bed less moisture than untreated Green flax fibers, whereas the mechanical properties of the upgraded fibers were retained with moisture absorption, i f not improved. In addition electrochemical studies were conducted on these fibers. These data agreed well with conventional moisture absorption data. Zeta (zeta)-potential measurements at different pH-levels showed differenc es for Duralin fibers, which can be attributed to differences in morphologi cal features. (C) 2001 Elsevier Science Ltd. All rights reserved.