Fpinnovations

Lakehead University

Md Nur Alam

Zohreh Sabzalian

Theo Van De Ven

Alois Vanerek

Lew Christopher

Jessica Carette

We have developed an environmentally-friendly new process for producing textile yarns. The process involves chemical modification of cellulose with subsequent dissolution of the chemically modified cellulose with chitosan or other amine group-containing compounds which yields a highly viscous gel. The chemical modification of cellulose employs a known process of periodate oxidation which we have modified to obtain fibers with a low degree of aldehyde groups (&#x2dc;2 mmol/g cellulose) that still remain insoluble in water. After washing, the chemically modified fibers can be cross-linked with chitosan or other amine group-containing compounds to produce the viscous gel. The viscous gel can then be extruded through a syringe nozzle in the form of textile yarns.

Method for production of man-made textile yarns from wood fibers

The invention relates to novel absorbent fibres/filaments from low-substituted carboxymethyl cellulose and the method of producing same. The filaments are produced by wet spinning, wherein the spinning dope is entirely comprised of low-substituted carboxymethyl cellulose dissolved in sodium hydroxide. The resulting CMC filaments have degree of substitution ranging from 0.10-0.35 and degree of polymerization ranging from 250-650 with the CMC uniformly distributed throughout the filament. The absorbency in deionized water and saline (0.9% NaCl) solution is 120 g/g and 30 g/g, respectively. The retention of deionized water and saline (0.9% NaCl) solution within the fibres is 48 g/g and 25 g/g, respectively.

Absorbent fibres produced from low-substituted carboxymethyl cellulose and the process thereof

Growing community of inventors

Thunder Bay, Canada

Md Nur Alam