A kind of multifunctional cotton fabric with reproducible antibacterial performance and its preparation method

A dual-function, antibacterial agent technology, applied in plant fibers, wear-resistant fibers, textiles, and papermaking, can solve the problems of inability to exert antibacterial and reproducible halide amines, and unknown antibacterial performance, so as to achieve repeated and efficient utilization, slow down Bacterial growth rate and the effect of increasing the contact angle

Active Publication Date: 2021-11-02
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The antibacterial performance of the existing haloamine antibacterial finishing fabrics cannot be known in the actual use process, so antibacterial and renewable treatment cannot be carried out according to the existence of antibacterial performance, that is, the advantages of haloamine antibacterial and renewable can not be exerted

Method used

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  • A kind of multifunctional cotton fabric with reproducible antibacterial performance and its preparation method
  • A kind of multifunctional cotton fabric with reproducible antibacterial performance and its preparation method
  • A kind of multifunctional cotton fabric with reproducible antibacterial performance and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Take 10g of PHMS (dimethylmethylhydrogen (siloxane and polysiloxane), the relative molecular mass is 2000g / mol, and the contained CH 3 OSiH repeating unit accounted for 30% of the total Si-O repeating unit quantity) into a 100mL three-necked flask, and then added 40g isopropanol, 4.56g TEVS (vinyltriethoxysilane), 1.34g AH (1-allyl Hydantoin) and 4.88g SMA (stearyl methacrylate) (the molar ratio of alkenyl monomers is 5:2:3), and the above mixture was blown with nitrogen at room temperature for 10 minutes to remove the air in the bottle. Then add a certain amount of chloroplatinic acid hexahydrate catalyst (the content of Pt is 50ppm) in the bottle, under nitrogen protection, react at 85 ℃ of conditions, adopt infrared spectrum monitoring reaction progress, until Si-H characteristic peak disappears in the infrared spectrum, Total reaction 6h. Finally decompression distillation removes solvent and unnecessary TEVS and leaves standstill, after superfluous AH and SMA soli...

Embodiment 2

[0064] The multifunctional cotton fabric is prepared with reference to the method in Example 1, the difference is that the ethylenic monomers added in the adjustment Example 1 are respectively 5.47g TEVS (vinyltriethoxysilane), 1.34g AH (1-allyl Hydantoin) and 3.25gSMA (stearyl methacrylate) (alkenyl monomer molar ratio is 6:2:2), other conditions or parameters are consistent with Example 1.

[0065] The prepared cotton fabric also has excellent antibacterial properties, hydrophobic properties and anti-wrinkle properties. In addition, the contact angle of the finished cotton fabric after chlorination is significantly improved compared with that before chlorination. In addition, the relationship between the chlorine content and the contact angle of the cotton fabric under water washing, rubbing, and ultraviolet light is also consistent with that in Example 1. Therefore, the finishing agent prepared in this example can also achieve the effects described in Example 1, that is, i...

Embodiment 3

[0067] Take 10g of PHMS (dimethylmethylhydrogen (siloxane and polysiloxane), the relative molecular mass is 8000g / mol, and the contained CH 3 The OSiH repeating unit accounts for 20% of the entire Si-O repeating unit) into a 100mL three-necked flask, and then 40g of isopropanol, 2.22g of vinyltrimethoxysilane, 1.01g of 5,5-dimethyl-3-( 1-allyl)hydantoin and 2.27g (1-octadecene) (the molar ratio of alkenyl monomers is 5:2:3), and the above mixture was blown with nitrogen at room temperature for 10 minutes to remove the air in the bottle. Then add a certain amount of palladium catalyst (the content of palladium is 80ppm) in the bottle, react at 90°C for 8h under the protection of nitrogen, and finally remove the solvent and excess vinyltrimethoxysilane by distillation under reduced pressure and let it stand until the excess After the 5,5-dimethyl-3-(1-allyl)hydantoin and 1-alkenyl octadecane solids are precipitated, the upper transparent viscous liquid is taken to prepare a mult...

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 discloses a multifunctional cotton fabric with reproducible antibacterial properties and a preparation method thereof, belonging to the technical field of textile finishing. In the present invention, firstly, a haloamine antibacterial agent and a long-chain hydrophobic alkane are connected to the hydrogen-containing silicone oil PHMS through a hydrosilylation reaction, and a finishing agent with antibacterial and hydrophobic dual functions is successfully synthesized. The cotton fabric with antibacterial and hydrophobic dual functions was successfully prepared by chemical impregnation by co-bathing with nano-titanium dioxide to prepare a finishing solution (nano-titanium dioxide can improve the UV resistance of haloamine antibacterial agents). The method is easy to operate, short in preparation time and low in cost, and can judge whether there is active bactericidal chlorine on the surface of cotton fabric by simply observing the shape of water droplets or measuring the contact angle, so as to determine whether to rechlorinate the cotton fabric to obtain antibacterial properties again, which has great advantages. great application potential.

Description

technical field [0001] The invention relates to a multifunctional cotton fabric with reproducible antibacterial properties and a preparation method thereof, belonging to the technical field of textile finishing. Background technique [0002] In practical application, cotton fabric is easily wetted by water and thus provides a breeding ground for bacteria. Giving antibacterial cotton fabric hydrophobic function will greatly reduce the bacteria on the surface of cotton fabric. At present, research on the preparation of antibacterial hydrophobic cotton fabrics is relatively rare, and most of the existing preparation methods use fluorine-containing compounds or siloxane long-chain hydrophobic agents combined with antibacterial metal ions (such as Ag + , Cu 2+ ) for step-by-step finishing, the prepared cotton fabric has the disadvantages of poor antibacterial stability and high cost of antibacterial agents. In addition, the existing antibacterial hydrophobic finishing process is...

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 Patents(China)
IPC IPC(8): D06M15/643D06M11/46C08G77/388D06M101/06
CPCC08G77/388D06M11/46D06M15/643D06M15/6436D06M16/00D06M2101/06D06M2200/12D06M2200/20D06M2200/35
Inventor 李蓉钱逢宜任学宏
Owner JIANGNAN UNIV
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