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Synthetic method of flax fabric finishing agent

A technology of flax fabric and synthesis method, applied in the direction of fiber processing, plant fiber, textile and paper making, etc., to achieve the effect of mild reaction conditions and easy operation

Inactive Publication Date: 2008-12-24
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But as a kind of finishing agent with antibacterial performance and anti-wrinkle performance group, it has not been reported so far

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 2g of degraded chitosan and 40mL of anhydrous ether and add it to a 100mL three-necked bottle, start mechanical stirring, about 0.5h, after the degraded chitosan is completely swollen, add 4g of citric anhydride and 0.06g of sodium hypophosphite in sequence, Stir for 16 hours, adjust the pH value to neutral, filter with suction, concentrate under reduced pressure, add about 60 mL of ethanol and leave overnight, filter with suction, and dry in vacuum to obtain citricated degraded chitosan with a molecular weight of 1246 and a degree of substitution of 0.612. IR (KBr, cm -1 ): 1736, 1634, 1593, 1381, 809; 13CNMR (d, ppm): 177.7, 168.5.

[0017] Example 2

[0018] Take 2g of degraded chitosan and 40mL of absolute ethanol and add them to a 100mL three-neck bottle, start mechanical stirring, about 0.5h, after the degraded chitosan is completely swollen, add 8g of citric anhydride and 0.01g of trisodium phosphate in sequence, and stir at a constant temperature After 16...

Embodiment 3

[0020] Take 2g of degraded chitosan and 40mL of anhydrous ether and add it to a 100mL three-necked bottle, start mechanical stirring, about 0.5h, after the degraded chitosan is completely swollen, add 10g of citric anhydride and 0.12g of sodium tartrate in turn, and stir at a constant temperature for 20h , adjust the pH value to neutral, filter with suction, concentrate under reduced pressure, add about 60mL of ethanol and place overnight, filter with suction, and dry in vacuum to obtain citricated degraded chitosan with a molecular weight of 2590 and a degree of substitution of 1.303.

Embodiment 4

[0022] Take 2g of degraded chitosan and 40mL of anhydrous acetic acid and add them to a 100mL three-neck bottle, start mechanical stirring, about 0.5h, after the degraded chitosan is completely swollen, add 4g of citric anhydride and 0.06g of sodium hypophosphite in sequence, Stir for 24 hours, adjust the pH value to neutral, filter with suction, concentrate under reduced pressure, add about 60mL of ethanol and leave overnight, filter with suction, and dry in vacuum to obtain citricated degraded chitosan with a molecular weight of 1392 and a degree of substitution of 0.756.

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 method for synthesizing a linen cloth finishing agent. The method takes citric anhydride as a modified compound for degraded chitosan and comprises the following steps: firstly, the degraded chitosan is added into a medium according to a certain proportion and then stirred and swelled for 0.5 hour; secondly, the citric anhydride is added into the mixture according to the mass ratio of the degraded chitosan to the citric anhydride is 1 to 2-5; thirdly, a catalyst of 1 to 2 percent against the total mass is added into the mixture and reacted for 16 to 24 hours at a normal temperature; and fourthly, after the reaction is stopped, the pH value is adjusted to neutrality and the mixture undergoes pump filtration and decompression concentration, is added with 60 milliliters of ethanol, stands overnight, and then undergoes pump filtration and vacuum drying. The method has the advantages that: the synthesis method has mild reaction condition and simple and convenient operation; and the synthesized citric acylated degraded chitosan is an environment-friendly product, not only contains chitosan molecules with the antibacterial performance but also contains polybasic carboxylic acid radicals with wrinkle resistance, can simultaneously give play to the dual function of antibacterium and wrinkle resistance when used for linen cloth finishing, and is a multifunctional environment-friendly linen cloth finishing agent.

Description

technical field [0001] The invention relates to a method for synthesizing a finishing agent for linen fabrics. The finishing agent synthesized by the method is suitable for finishing of linen fabrics. Background technique [0002] The finishing of linen fabrics emerged in the 1960s and 1970s, and its main means are divided into two categories: mechanical finishing and chemical finishing. In our country, the technology related to mechanical finishing is relatively mature, and industrialization has been realized in the 1980s. Compared with the pace of mechanical finishing, the development of chemical finishing is relatively slow, and as the key technology of chemical finishing of flax - the research progress of linen fabric finishing agent has a great influence on it. [0003] At present, the known finishing agents used for finishing linen fabrics mainly include formaldehyde resin, epoxy resin, organosilicon and polyolefin series, etc. For related content, please refer to pat...

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): D06M15/03C08B37/08D06M101/06
Inventor 邓启刚周德瑞陈朝晖赵冰
Owner HARBIN INST OF TECH
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