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Modified biomass fiber and preparation method thereof

A biomass fiber and modification technology, applied in the fiber field, can solve the problems of low breaking strength, low elongation at break, and limit industrial application, and achieve the effect of improving the force, increasing the breaking strength and elongation at break

Inactive Publication Date: 2015-10-07
厦门百美特生物材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current new biomass fibers include seaweed fiber, chitosan / chitin fiber, regenerated silk, regenerated keratin protein, etc., which have low breaking strength, low elongation at break, and poor spinnability, which limits industrial applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: the preparation of nano activated carbon modified seaweed fiber

[0023] Stock solution preparation: Add nano-activated carbon powder accounting for 0.1 mass fraction% of the total fiber solid content into water and stir to disperse. After the dispersion is uniform, add sodium alginate powder with a mass fraction of spinning stock solution of 4% and an intrinsic viscosity of 285mPa.S while stirring. , stir to dissolve, filter, defoam, and stand still to obtain spinning stock solution.

[0024] Spinning: The spinning stock solution is metered by a metering pump, and then enters the spinneret (cap) through a candle filter and a connecting pipe; the stock solution squeezed out from the holes on the spinneret enters the calcium chloride coagulation solution for coagulation , precipitated in the coagulation solution to form fibers; hot water drafting, washing and drying.

[0025] Effect verification: According to the national standard "GB / T 14337 Test methods...

Embodiment 2

[0026] Embodiment 2: porous nano-SiO2 preparation of modified chitosan fiber

[0027] Stock solution preparation: the gas-phase nano-SiO 2 Add it into the acetic acid solution with a concentration of 2% by volume and stir to disperse. After the dispersion is uniform, add chitosan powder with a deacetylation degree of 90%, an intrinsic viscosity of 350mPa.S, and a mass fraction of 3.6% of the spinning stock solution while stirring, and stir to dissolve. , filtered, defoamed, and left to stand to obtain the spinning stock solution;

[0028] Spinning: The spinning stock solution is metered by a metering pump, and then enters the spinneret (cap) through a candle filter and a connecting pipe; the stock solution squeezed out from the holes on the spinneret enters the sodium hydroxide coagulation solution for coagulation , precipitated in the coagulation solution to form fibers; hot water drafting, washing and drying.

[0029] Effect verification: Compared with the unmodified chi...

Embodiment 3

[0030] Embodiment 3: the preparation of porous nano-SiO2 modified CMC blended seaweed fiber

[0031] Stock solution preparation: the gas phase SiO2 which accounts for 5 mass fraction of the total solid content of the fiber 2 Add it into water and stir to disperse. After the dispersion is uniform, add sodium alginate and CMC mixed powder (85% and 15% ratio) with a mass fraction of 3.6% of the spinning stock solution while stirring, stir to dissolve, filter, defoam, and stand still. Obtain spinning dope;

[0032] Spinning: The spinning stock solution is metered by a metering pump, and then enters the spinneret (cap) through a candle filter and a connecting pipe; the stock solution squeezed out from the holes on the spinneret enters the chlorinated solution with a concentration of 4%. The calcium coagulation solution is used for coagulation, and the primary fibers are formed by precipitation in the coagulation solution; hot water drawing, washing and drying are all required. ...

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Abstract

The invention discloses a modified biomass fiber and a preparation method thereof. The modified biomass fiber is prepared by adding a porous nano-material to a biomass fiber material for a modifying purpose; the biomass fiber material is of one or more co-dissolvable components; the intrinsic viscosity of the biomass fiber material is larger than 200mpa.s; the porous nano-material is activated carbon having the particle size being 5-170nm and the specific surface area being not less than 50m<2> / g, or gaseous SiO2 having the particle size being 5-170nm and the specific surface area being not less than 50m<2> / g. When the modified biomass fiber is prepared, the porous nano-material is added to a solvent first, then sufficiently stirred and uniformly dispersed, then added with biomass fiber material powder while stirring and sufficiently stirred for dispersion and homogenization. According to the modified biomass fiber, the breaking strength and the elongation at break are improved, and thus the spinnability is enhanced.

Description

technical field [0001] The invention relates to the field of fibers, in particular to a modified biomass fiber and a preparation method thereof. Background technique [0002] The current new biomass fibers include seaweed fiber, chitosan / chitin fiber, regenerated silk, regenerated keratin protein, etc., which have low breaking strength, low elongation at break, and poor spinnability, which limit industrial applications. Contents of the invention [0003] The purpose of the present invention is to provide a novel modified biomass fiber with good spinnability and spun by wet spinning technology. [0004] In order to achieve the above purpose, the present invention provides a modified biomass fiber, which is characterized in that it is prepared by adding porous nanomaterials to the biomass fiber material; the biomass fiber material is one or more than one soluble The composition; the intrinsic viscosity of the biomass fiber material is greater than 200mpa.s. [0005] Furthe...

Claims

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Application Information

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IPC IPC(8): D01F9/04D01F4/02D01F4/00D01F9/00D01F1/10
Inventor 黄福龙刘松林邱东刘澄胜林丽雯蓝煌琴吴晓玲
Owner 厦门百美特生物材料科技有限公司
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