Among the bast fibers, flax fibers have been widely used as reinforcing material for polymer composites with good mechanical properties, low abrasion, environmental friendliness, and low cost. In general, flax straw consists of a composite of technical fibers (TF) and binder based on pectin, lignin and hemicelluloses. One TF is composed of several so-called elementary fibers (EF), bundled together by pectin and lignin substances [1]. The process to remove the binding (non-fiber stem) tissues, such as pectin and lignin from the fiber bundle to release the individual fibers is, called retting. The retting process can involve water treatment, dew, or enzyme treatment [2]. Recently, enzyme retting has been demonstrated as a promising replacement for traditional retting. methods for its environmental friendliness and quality of fibers that can be produced.
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