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Water-collecting polymer filament imitating spider silk structure and preparation method thereof

A technology of polymer silk and spider silk is applied in the field of bionic water-collecting fiber and its preparation, which can solve the problems of high water-collecting cost, inability to meet water demand, low water-collecting efficiency, etc., and achieve the effect of high collection efficiency

Active Publication Date: 2014-08-13
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to overcome the low water collection efficiency of the existing water collection methods, which cannot meet the water needs of people in vast water-shortage areas, and also have the high cost of water collection and the defects of being unfriendly to the environment. The research on the water collection phenomenon of natural spider silk in nature, imitating the periodic spindle knot structure of spider silk, providing a kind of water collection polymer silk with high water collection efficiency, low cost and simple preparation of spider silk structure

Method used

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  • Water-collecting polymer filament imitating spider silk structure and preparation method thereof
  • Water-collecting polymer filament imitating spider silk structure and preparation method thereof
  • Water-collecting polymer filament imitating spider silk structure and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Example 1. Preparation of water-collecting fiber with PMMA spindle knot imitating spider silk structure

[0047] (1) Prepare a mixed solution of 3% PMMA in DMF and water containing the UV stabilizer bis(2,2,6,6-tetramethylpiperidinyl) sebacate, wherein the UV stabilizer double The mass fraction of (2,2,6,6-tetramethylpiperidinyl) sebacate in the mixed solution of PMMA DMF and water is 0.8wt%, and the content of water in the mixed solution of PMMA DMF and water The mass fraction is 0.5wt%, the balance is DMF;

[0048] (2) The man-made nylon fiber with a diameter of 10μm is completely immersed into the UV stabilizer bis(2,2,6,6-tetramethylpiperidinyl) sebacate obtained in step (1), and the mass fraction is 3 % PMMA in a mixed solution of DMF and water, adjust the rotation speed of the motor connected to one end of the nylon fiber, so that the nylon fiber is leveled from the above mixed solution at a speed of 1mm / s along the axial direction of the nylon fiber. Pull out (e.g. ...

Embodiment 2

[0052] Example 2. Preparation of water-collecting fiber with PS spindle knot imitating spider silk structure

[0053] (1) Prepare a mixed solution of DMAc and ethanol containing 15% PS of the antioxidant 2,6-di-tert-butyl-4-methylphenol, wherein the antioxidant 2,6-di-tert-butyl-4 -The added amount of methylphenol is 1.2% of the weight of the mixed solution of DMAc and ethanol of PS, the mass fraction of ethanol in the mixed solution of DMAc and ethanol of PS is 3wt%, and the balance is DMAc;

[0054] (2) The artificial polypropylene fiber with a diameter of 1000μm is completely immersed in step (1) containing the antioxidant 2,6-di-tert-butyl-4-methylphenol with a mass fraction of 15% PS, DMAc and ethanol In the mixed solution, adjust the rotation speed of the motor connected to one end of the polypropylene fiber, so that the polypropylene fiber is pulled horizontally and steadily from the above mixed solution at a speed of 14mm / s along the axial direction of the polypropylene fib...

Embodiment 3

[0058] Example 3. Preparation of water-collecting fiber with PVDF spindle knot imitating spider silk structure

[0059] (1) The preparation contains antioxidant 2,6-di-tert-butyl-4-methylphenol, and the mass fraction of the ultraviolet absorber 2-cyano-3,3-diphenyl acrylate 2-ethylhexyl is 9% The mixed solution of PVDF in THF and acetone, where the antioxidant 2,6-di-tert-butyl-4-methylphenol is 0.8% of the weight of the mixed solution of PVDF in THF and acetone, and the ultraviolet absorber 2-cyanide The added amount of 2-ethylhexyl 3-diphenyl acrylate is 0.2% of the weight of the mixed solution of THF and acetone of PVDF, and the mass fraction of acetone in the mixed solution of THF and acetone of PVDF is 1.5wt %, the balance is THF;

[0060] (2) Completely immerse the artificial spandex fiber with a diameter of 200μm into the step (1) containing the antioxidant 2,6-di-tert-butyl-4-methylphenol and the ultraviolet absorber 2-cyano-3,3- Adjust the rotation speed of the motor con...

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Abstract

The invention relates to water-collecting polymer filament imitating the spider silk structure and a preparation method thereof. The preparation method comprises the following steps of: immersing common artificial silks into polymer solution mixed by a good solvent and a poor solvent containing polymer, then horizontally pulling out the artificial silks from the polymer solution along the axial direction of the artificial silks, and further enabling the polymer solution to wrap the surfaces of the artificial silks to form a liquid film; then due to Rayleigh instability, causing that the liquid film of the polymer solution on the surfaces of the artificial silks evolutes (break) into a string of liquid drops hung on the artificial silks; by adjusting the humidity and the temperature of the environment, drying the polymer liquid drops hung on the artificial silks so as to form spindle knots with periodic arrangement and a spindle-shaped structure on the surfaces of the artificial silks; and enabling the spindle knots which are in alignment along the axial direction of the artificial silks to form a coarse structure on the surfaces of the artificial silks, and further obtaining the water collecting polymer silks with the similar spider-silk structure by biomimetic synthesis.

Description

Technical field [0001] The invention relates to a biomimetic water-collecting fiber and a preparation method thereof, in particular to a water-collecting polymer yarn with a spider silk structure and a large-scale continuous preparation method of the polymer yarn. Background technique [0002] The lack of water resources not only seriously affects the sustainable development of the national economy and national ecological security, but also poses a great threat to human survival. According to data from the United Nations Environment Programme, the world’s arid regions account for about 41% of the total land area. In my country, the area of ​​arid areas has reached 2.5×106km. 2 , Accounting for about 1 / 4 of the country's area. Moreover, with the abnormal climate caused by global warming, the problem of water scarcity has become more and more serious in some places. In addition, some coastal areas have to consume a lot of energy for desalination because of the shortage of fresh w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/263D06M15/233D06M15/256D06M15/333D06M15/513D06M15/356D06M13/355D06M13/345D06M13/358D06M13/152C03C25/26
Inventor 柏浩鞠婕孙瑞泽徐国栋郑咏梅江雷
Owner INST OF CHEM CHINESE ACAD OF SCI
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