Process for preparing modified cotton fibre

A technology for modifying cotton and fiber, which is applied in fiber processing, textiles and papermaking, etc. It can solve the problems of destroying the original appearance and being difficult to achieve, achieve good biocompatibility, expand application fields, improve wearability and added value Effect

Inactive Publication Date: 2006-06-28
SUZHOU UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

But this method also has a big problem, because a chemical crosslinking agent is used in the reaction process, a layer of chemical substances is inevitably attached to the surface of the cotton fiber, which destroys the green natural cellulose fiber of the cotton fiber. The original appearance of the natural cotton fiber causes the "chemical fiberization" of the surface, and has some adverse effects on the human body. It is difficult to meet the requirements of green production and green ecological textiles advocated today.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Process for preparing modified cotton fibre
  • Process for preparing modified cotton fibre
  • Process for preparing modified cotton fibre

Examples

Experimental program
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Embodiment 1

[0019] The twisted 50.5 Tex cotton yarn is scoured with caustic soda to remove impurities, and then bleached with hydrogen peroxide. Then put the cotton yarn into the sodium periodate solution with a concentration of 1g / L, keep the temperature of the reaction solution at 55°C, stir and treat it for 1 hour under the condition of bath ratio 1:200, take it out, and use 0.1mol / L glycerine Soak in alcohol solution for 30 minutes; soak in water at room temperature for 24 hours to remove the oxidant on the cotton fiber, dehydrate after washing with warm water for several times, you can get the oxidized cotton fiber that keeps a certain strength and elongation (breaking strength decreases by 14%, elongation rate decreased by 7%); before the above-mentioned selective oxidation reaction, the molecular structure of cotton fiber is

[0020]

[0021] , in C 2 and C 3 The position is the secondary hydroxyl group, in the selective oxidation reaction, the IO in the periodate 4 - C in t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a modified cotton fiber manufacturing method. It belongs to textile fiber material modification technique. It includes the following steps: boiling-off twisted cotton yarn and bleaching; processing selective oxidation reaction by putting the cotton yarn into periodate with 0.1-3g/L concentration at 30-60 centigrade degree for 1-2h; removing the oxidant; washing; dehydrating; drying; gaining oxidation cotton fiber with less than 25% strength stretch ratio; using the matter with -NH2, -OH active group to graft and cross link. Thus the cotton fiber is modified to gain multifunction composite cotton fiber. It can increase its wearability and addition value, expand application area, and solve the cotton fiber function in textile fiber material field.

Description

technical field [0001] The invention relates to a preparation method of modified cotton fiber, which belongs to the modification technology of textile fiber materials. Background technique [0002] Cotton fiber is one of the abundant renewable resources in nature, and its application involves various fields such as new materials, chemical raw materials, national defense, food, medicine, and environment. Cotton fiber is a linear semi-rigid natural polymer compound formed by D-glucopyranose anhydride linked by β-1,4-glycosidic bonds. There are 3 active hydroxyl groups on each glucosyl ring in its macromolecular chain ( two secondary hydroxyl groups and one primary hydroxyl group). As a natural cellulose fiber, cotton fiber has the characteristics of good hygroscopicity, air permeability, warmth retention, antistatic property and soft hand feeling, and plays an important role in the field of textile fiber materials. However, cotton fiber itself also ha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M14/22D06L4/00D06M11/30D06M15/15
Inventor 陈宇岳许云辉
Owner SUZHOU UNIV
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