Modified cellulose fibers obtained through modification with modifiers

Abstract

The invention relates to modified cellulose fibers obtained through modification with modifiers, belonging to the technical field of textile dyeing. The modified cellulose fibers are obtained by carrying out modification treatment on cellulose fibers with low molecular quaternary ammonium salt cationic modifiers and a high molecular quaternary ammonium salt cationic modifier as cationic modifiers and have Zeta electrode potential values of 0-15mV when the pH values are 6.5-8.5, wherein the low molecular quaternary ammonium salt cationic modifiers are chlorotriazine quaternary ammonium salt compounds; the high molecular quaternary ammonium salt cationic modifier is polyepichlorohydrin dimethylamine. The modified cellulose fibers have the beneficial technical effects that the two kinds of specific modifiers are adopted and the synergistic effects of the modifiers are given play to, so that the modified cellulose fibers achieve salt-free low-alkali dyeing in subsequent dyeing, have the effects of reducing pollution, saving the cost, simplifying the process and reducing the difficulty, have good modification and subsequent dyeing effects, and are suitable for large-scale industrial production.

Description

technical field

[0001] The invention relates to a modified cellulose fiber, more specifically, the invention relates to a modified cellulose fiber modified by a modifier, and belongs to the technical field of textile dyeing. Background technique

[0002] The dye uptake rate of traditional cellulose fiber dyeing process is generally around 40-70%. The dye uptake rate is low and there are many floating colors. In order to achieve the purpose of color fixation, the hydroxyl groups on the cellulose need to be ionized under strong alkaline conditions, so a large amount of soda ash must be added to the dyeing solution in the later stage of dyeing. The treatment of inorganic salts and alkalis has always been a problem that plagues the industry. A large amount of inorganic salts that are neither recyclable nor degradable are discharged into rivers and lakes, seriously polluting water quality. Due to the high permeability of salt, the surrounding soil is salinized and becomes alkalin...

Examples

Embodiment 1

[0060] Modified cellulose fibers:

[0061] The modified cellulose fiber is modified by the cellulose fiber through the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier as the cationic modifier, and the obtained pH value is 6.5 When -8.5, the Zeta electrode potential value is the modified cellulose fiber of 0-15mV; The described small molecular quaternary ammonium salt cationic modifier is a chlorotriazine type quaternary ammonium salt compound, and the described polymer quaternary ammonium salt The cationic modifier is polyepichlorohydrin dimethylamine.

[0062] The above is the modified cellulose fiber of the present invention. Due to the small molecular weight of the small molecular quaternary ammonium salt cationic modifier, it can not only be adsorbed on the surface of the fiber but also diffuse into the fiber, while the high molecular weight quaternary ammonium salt cationic modifier has a large m...

Embodiment 2

[0064] Modified cellulose fibers:

[0065] The modified cellulose fiber is modified by the cellulose fiber through the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier as the cationic modifier, and the obtained pH value is 6.5 , the modified cellulose fiber whose Zeta electrode potential value is 15mV; the small molecule quaternary ammonium salt cationic modifier is a chlorotriazine type quaternary ammonium salt compound, and the high molecular quaternary ammonium salt cationic modifier Polyepichlorohydrin dimethylamine.

Embodiment 3

[0067] Modified cellulose fibers:

[0068] The modified cellulose fiber is modified by the cellulose fiber through the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier as the cationic modifier, and the obtained pH value is 8.5 When, the modified cellulose fiber whose Zeta electrode potential value is 0mV; the described small molecule quaternary ammonium salt cationic modifier is a chlorotriazine type quaternary ammonium salt compound, and the described polymer quaternary ammonium salt cationic modifier Polyepichlorohydrin dimethylamine.

technical field

[0001] The invention relates to a modified cellulose fiber, more specifically, the invention relates to a modified cellulose fiber modified by a modifier, and belongs to the technical field of textile dyeing. Background technique

[0002] The dye uptake rate of traditional cellulose fiber dyeing process is generally around 40-70%. The dye uptake rate is low and there are many floating colors. In order to achieve the purpose of color fixation, the hydroxyl groups on the cellulose need to be ionized under strong alkaline conditions, so a large amount of soda ash must be added to the dyeing solution in the later stage of dyeing. The treatment of inorganic salts and alkalis has always been a problem that plagues the industry. A large amount of inorganic salts that are neither recyclable nor degradable are discharged into rivers and lakes, seriously polluting water quality. Due to the high permeability of salt, the surrounding soil is salinized and becomes alkalin...

Examples

Embodiment 1

[0060] Modified cellulose fibers:

[0061] The modified cellulose fiber is modified by the cellulose fiber through the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier as the cationic modifier, and the obtained pH value is 6.5 When -8.5, the Zeta electrode potential value is the modified cellulose fiber of 0-15mV; The described small molecular quaternary ammonium salt cationic modifier is a chlorotriazine type quaternary ammonium salt compound, and the described polymer quaternary ammonium salt The cationic modifier is polyepichlorohydrin dimethylamine.

[0062] The above is the modified cellulose fiber of the present invention. Due to the small molecular weight of the small molecular quaternary ammonium salt cationic modifier, it can not only be adsorbed on the surface of the fiber but also diffuse into the fiber, while the high molecular weight quaternary ammonium salt cationic modifier has a large m...

Embodiment 2

[0064] Modified cellulose fibers:

[0065] The modified cellulose fiber is modified by the cellulose fiber through the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier as the cationic modifier, and the obtained pH value is 6.5 , the modified cellulose fiber whose Zeta electrode potential value is 15mV; the small molecule quaternary ammonium salt cationic modifier is a chlorotriazine type quaternary ammonium salt compound, and the high molecular quaternary ammonium salt cationic modifier Polyepichlorohydrin dimethylamine.

Embodiment 3

[0067] Modified cellulose fibers:

[0068] The modified cellulose fiber is modified by the cellulose fiber through the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier as the cationic modifier, and the obtained pH value is 8.5 When, the modified cellulose fiber whose Zeta electrode potential value is 0mV; the described small molecule quaternary ammonium salt cationic modifier is a chlorotriazine type quaternary ammonium salt compound, and the described polymer quaternary ammonium salt cationic modifier Polyepichlorohydrin dimethylamine.

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