Paper Title
Polysaccharides as Starting Materials For 100% Bio-Based Cryogels

Abstract
The ultra highly nanoporous cryogel is recognized as a state of matter rather than as a functional material, because of its qualitative differences in properties, transitional density and porosity, and diverse chemical compositions. Flax-based biocomposites from nature exhibit remarkable morphological properties which inspire to prepare synthetic porous biomaterials. Flax (Linum usitatissimum L.) is one of the most widely utilized lignocellulosic biomasse. Flax fibers are very promising because they show high mechanical strength, chemical stability, biodegradability, non-toxicity and are composed mostly of cellulose (70%). Ultra-light and highly porous lignocellulosic material is prepared via flax fibers dissolution in imidazolium-based ionic liquids, 1-ethyl-3 methylimidazolium acetate (EMIMAc). After washing, the wet Flax solution were dried with freeze drying. The influence of the regenration bath on the morphology and crystallinity of materials flax has been studied. Keywords- Biopolymer; Flax fibers cryogel; ionic liquid (IL), cristallinity, porosity.