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

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

Active Publication Date: 2012-11-14
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

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Effect test

Embodiment 1

[0046] Embodiment 1. has the preparation of the water-collecting fiber of the imitation spider silk structure of PMMA spindle knot

[0047] (1) preparation contains the mass fraction of ultraviolet stabilizer two (2,2,6,6-tetramethylpiperidinyl) sebacate as the mixed solution of the DMF of 3% PMMA and water, wherein ultraviolet stabilizer bis (2,2,6,6-tetramethylpiperidinyl) the massfraction of sebacate in the DMF of PMMA and the mixed solution of water is 0.8wt%, the water in the DMF of PMMA and the mixed solution of water The mass fraction is 0.5wt%, and the balance is DMF;

[0048] (2) The man-made nylon fiber that is 10 μm in diameter is completely submerged into the mass fraction containing ultraviolet stabilizer bis(2,2,6,6-tetramethylpiperidinyl) sebacate obtained in step (1) is 3 In the mixed solution of DMF and water of PMMA, adjust the rotation speed of the motor connected to one end of the nylon fiber, so that the nylon fiber can be leveled from the above mixed sol...

Embodiment 2

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

[0053] (1) preparation contains the massfraction of antioxidant 2,6-di-tert-butyl-4-methylphenol as the mixed solution of DMAc and ethanol of 15% PS, wherein antioxidant 2,6-di-tert-butyl-4 -The addition 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 man-made polypropylene fiber that is 1000 μ m is immersed in the DMAc and ethanol that the massfraction of the PS that contains antioxidant 2,6-di-tert-butyl-4-methylphenol that the diameter is 1000 μm is completely immersed in step (1) In the mixed solution, adjust the rotational speed of the motor connected to one end of the polypropylene fiber, so that the polypropylene fiber is pulled out horizontally from the above mixed solution at a uniform speed a...

Embodiment 3

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

[0059] (1) preparation contains antioxidant 2,6-di-tert-butyl-4-methylphenol, and the mass fraction of ultraviolet absorber 2-cyano-3,3-diphenylacrylate 2-ethylhexyl is 9% A mixed solution of THF and acetone of PVDF, wherein the addition of antioxidant 2,6-di-tert-butyl-4-methylphenol is 0.8% of the weight of the mixed solution of THF and acetone of PVDF, and the ultraviolet absorber 2-cyanide The addition of 2-ethylhexyl-3,3-diphenylacrylate is 0.2% of the mixed solution weight 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) The man-made spandex fibers with a diameter of 200 μm are completely submerged into the obtained step (1) containing antioxidant 2,6-di-tert-butyl-4-methylphenol, ultraviolet absorber 2-cyano-3,3- The mass fraction of 2-ethylhexyl diph...

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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 bionic water-collecting fiber and a preparation method thereof, in particular to a water-collecting polymer silk imitating a spider silk structure and a large-scale continuous preparation method of the polymer silk. Background technique [0002] The scarcity 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 the United Nations Environment Programme, drylands cover about 41% of the total land area globally. In my country, the area of ​​arid regions has reached 2.5×106km 2 , accounting for about 1 / 4 of the country's land area. Moreover, with the climate anomalies caused by global warming, the problem of water scarcity has intensified in some places. In addition, some coastal areas also have to spend a lot of energy for desalination because of the shortage of fresh water resources. At...

Claims

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Application Information

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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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