A kind of cationic nano particle surface modifier for cotton

Abstract

The invention relates to a surface modifier for cotton cationic-type nanoparticles. The nanoparticles can be absorbed on the surface of a cotton fiber by virtue of electrostatic attraction so as to change surface properties of the cotton fiber, so that the cotton fiber can be dyed by using anionic dye without influencing the hygroscopic property and air permeability of cotton fabrics.

Description

technical field

[0001] The invention discloses a cationic nano particle surface modifier for cotton, belongs to the field of textile printing and dyeing, and in particular relates to a preparation method of a cationic nano particle surface modifier for cotton. Background technique

[0002] Cotton is an important natural cellulose fiber, which has excellent wearing properties such as comfortable softness, good hygroscopicity, and not easy to generate static electricity. The dyes commonly used in cotton textile dyeing include reactive dyes, direct dyes, vat dyes, etc. However, due to the negative charge of cotton fibers under normal conditions, there is electrostatic repulsion with anionic dyes, resulting in low dye uptake and fixation rates, and fast dyeing. Poor degree. Therefore, in the traditional dyeing process, a large amount of salt must be added to promote dyeing, which will inevitably cause problems such as environmental pollution and high resource consumption. [0...

Examples

Embodiment 1

[0019] Nitrogen was passed into a four-necked flask with a stirring device, a condenser, and a nitrogen gas introduction device for 15 minutes, and a certain amount of deionized water and cetyltrimethylammonium chloride with a weight percentage of 1.2% were added to emulsify agent, stirred at a rotating speed of 300r / min for 5min to make the emulsifier evenly distributed in water; adding weight percentages were respectively 7.5% and 12.5%, 9.5% and 10.5%, 12% and 8%, 15% and 5%, 17.5% and 2.5%, 19.2% and 0.8% of styrene and butyl acrylate as comonomers, pre-emulsified for 30min; the reaction temperature was raised from room temperature to (80±1)°C, and 0.01% by weight of Azobisisobutylamidine hydrochloride (AIBA) initiator; heat preservation reaction at (80±1)°C for 3 hours, and naturally cool down to 40-50°C to make polymers with positively charged particles on the surface and a particle size of 20-200nm matter nanoparticles.

Embodiment 2

[0021] Nitrogen was passed into a four-necked flask equipped with a stirring device, a condenser, and a nitrogen gas introduction device for 15 minutes, and a certain amount of deionized water was added and the weight percentages were 0.2%, 0.4%, 0.6%, 0.8%, and 1.0% respectively. , 1.2% cetyl trimethyl ammonium chloride (bromide), ethylene bis (hexadecyl dimethyl chloride (bromide) ammonium), methacryloxyethyl hexadecyl di One of methyl ammonium chloride (bromide) and maleic acid diethylenyl bis(hexadecyl dimethyl bromide (chlor) ammonium) is an emulsifier, at a speed of 300r / min Stir for 5 minutes to make the emulsifier evenly distributed in water; add 19.2% and 0.8% by weight of styrene and butyl acrylate as comonomers, and pre-emulsify for 30 minutes; the reaction temperature rises from room temperature to (80±1)°C , add 0.01% by weight of azobisisobutylamidine hydrochloride (AIBA) initiator; keep the reaction at (80±1)°C for 3 hours, and naturally cool down to 40-50°C to ...

Embodiment 3

[0023] Nitrogen was passed into a four-necked flask with a stirring device, a condenser, and a nitrogen gas introduction device for 15 minutes, and a certain amount of deionized water and cetyltrimethylammonium chloride with a weight percentage of 1.2% were added to emulsify Stir for 5min at a rotating speed of 300r / min to make the emulsifier evenly distributed in water; add 19.2% and 0.8% styrene and butyl acrylate as comonomers, and pre-emulsify for 30min; When the temperature rises to (80±1)°C, add azobisisobutylamidine hydrochloride (AIBA ), azobisisobutylimidazoline hydrochloride (AIBA), azobiscyanovaleric acid (ACVA), azobisisopropylimidazoline (AIP) as the initiator; at (80± 1) Insulate and react at ℃ for 3 hours, then cool down naturally to 40-50 ℃ to make polymer nanoparticles with a positively charged surface and a particle size of 20-200nm.

technical field

[0001] The invention discloses a cationic nano particle surface modifier for cotton, belongs to the field of textile printing and dyeing, and in particular relates to a preparation method of a cationic nano particle surface modifier for cotton. Background technique

[0002] Cotton is an important natural cellulose fiber, which has excellent wearing properties such as comfortable softness, good hygroscopicity, and not easy to generate static electricity. The dyes commonly used in cotton textile dyeing include reactive dyes, direct dyes, vat dyes, etc. However, due to the negative charge of cotton fibers under normal conditions, there is electrostatic repulsion with anionic dyes, resulting in low dye uptake and fixation rates, and fast dyeing. Poor degree. Therefore, in the traditional dyeing process, a large amount of salt must be added to promote dyeing, which will inevitably cause problems such as environmental pollution and high resource consumption. [0...

Examples

Embodiment 1

[0019] Nitrogen was passed into a four-necked flask with a stirring device, a condenser, and a nitrogen gas introduction device for 15 minutes, and a certain amount of deionized water and cetyltrimethylammonium chloride with a weight percentage of 1.2% were added to emulsify agent, stirred at a rotating speed of 300r / min for 5min to make the emulsifier evenly distributed in water; adding weight percentages were respectively 7.5% and 12.5%, 9.5% and 10.5%, 12% and 8%, 15% and 5%, 17.5% and 2.5%, 19.2% and 0.8% of styrene and butyl acrylate as comonomers, pre-emulsified for 30min; the reaction temperature was raised from room temperature to (80±1)°C, and 0.01% by weight of Azobisisobutylamidine hydrochloride (AIBA) initiator; heat preservation reaction at (80±1)°C for 3 hours, and naturally cool down to 40-50°C to make polymers with positively charged particles on the surface and a particle size of 20-200nm matter nanoparticles.

Embodiment 2

[0021] Nitrogen was passed into a four-necked flask equipped with a stirring device, a condenser, and a nitrogen gas introduction device for 15 minutes, and a certain amount of deionized water was added and the weight percentages were 0.2%, 0.4%, 0.6%, 0.8%, and 1.0% respectively. , 1.2% cetyl trimethyl ammonium chloride (bromide), ethylene bis (hexadecyl dimethyl chloride (bromide) ammonium), methacryloxyethyl hexadecyl di One of methyl ammonium chloride (bromide) and maleic acid diethylenyl bis(hexadecyl dimethyl bromide (chlor) ammonium) is an emulsifier, at a speed of 300r / min Stir for 5 minutes to make the emulsifier evenly distributed in water; add 19.2% and 0.8% by weight of styrene and butyl acrylate as comonomers, and pre-emulsify for 30 minutes; the reaction temperature rises from room temperature to (80±1)°C , add 0.01% by weight of azobisisobutylamidine hydrochloride (AIBA) initiator; keep the reaction at (80±1)°C for 3 hours, and naturally cool down to 40-50°C to ...

Embodiment 3

[0023] Nitrogen was passed into a four-necked flask with a stirring device, a condenser, and a nitrogen gas introduction device for 15 minutes, and a certain amount of deionized water and cetyltrimethylammonium chloride with a weight percentage of 1.2% were added to emulsify Stir for 5min at a rotating speed of 300r / min to make the emulsifier evenly distributed in water; add 19.2% and 0.8% styrene and butyl acrylate as comonomers, and pre-emulsify for 30min; When the temperature rises to (80±1)°C, add azobisisobutylamidine hydrochloride (AIBA ), azobisisobutylimidazoline hydrochloride (AIBA), azobiscyanovaleric acid (ACVA), azobisisopropylimidazoline (AIP) as the initiator; at (80± 1) Insulate and react at ℃ for 3 hours, then cool down naturally to 40-50 ℃ to make polymer nanoparticles with a positively charged surface and a particle size of 20-200nm.

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