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Preparation method of natural polymer-cationic polymer anti-alga coated glass and product thereof

A cationic polymer, natural polymer technology, applied in the direction of coating, can solve the problems of high cost, time-consuming and laborious regular cleaning, fish and aquatic plants damage, etc., to achieve the effect of less pollution, clear and beautiful water, and inhibiting the growth of algae

Active Publication Date: 2020-01-14
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical methods have been widely used because of their low price and simple operation. However, adding algaecide directly to the water body will cause harm to fish and aquatic plants in the water body at the same time, so it is not suitable for home use. Use in fish tanks or aquariums
However, the manual cleaning method has a high cost and a relatively short period of action, and regular cleaning is time-consuming and laborious.

Method used

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  • Preparation method of natural polymer-cationic polymer anti-alga coated glass and product thereof
  • Preparation method of natural polymer-cationic polymer anti-alga coated glass and product thereof
  • Preparation method of natural polymer-cationic polymer anti-alga coated glass and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) cleaning glass

[0025] ① Soak the glass piece in 5% v / v Decon90 solution for 2-12 hours;

[0026] ② Ultrasonic cleaning for 15 minutes, pour off the lotion;

[0027] ③ Rinse with deionized water 5 times, and ultrasonically in deionized water for 15 minutes;

[0028] ④Repeat ③, and then soak the slide in deionized water for later use.

[0029] (2) Amino modification of glass surface

[0030] ① Activate the hydroxyl groups on the surface of the glass sheet.

[0031] Put the glass sheet into the plasma cleaning machine for processing, the power is 90w, and the processing time is 2-5min;

[0032] ②The glass surface is modified with APTES (3-aminopropyltriethoxysilane).

[0033] APTES is dissolved in 90% ethanol solution to prepare a solution with a volume fraction of 5-10%. Then immerse the glass sheet treated with oxygen plasma into the solution, seal it and place it in a 60°C oven for 6-8 hours; then wash it with ethanol for 15 minutes, then wash it with deioni...

Embodiment 2

[0042] (1) cleaning glass

[0043] ① Soak the glass piece in 5% v / v Decon90 solution for 2-12 hours;

[0044] ② Ultrasonic cleaning for 15 minutes, pour off the lotion;

[0045] ③ Rinse with deionized water 5 times, and ultrasonically in deionized water for 15 minutes;

[0046] ④Repeat ③, and then soak the slide in deionized water for later use.

[0047] (2) Amino modification of glass surface

[0048] ① Activate the hydroxyl groups on the surface of the glass sheet.

[0049] Soak the glass sheet in a mixed solution of ammonia / hydrogen peroxide with a volume ratio of 3:1 for 30 minutes, rinse with deionized water, and then rinse with N 2 blow dry;

[0050] ②Glass sheet surface modification APTES (3-aminopropyltriethoxysilane)

[0051] APTES is dissolved in 90% ethanol solution to prepare a solution with a volume fraction of 5-10%. Then immerse the glass sheet treated with oxygen plasma into the solution, seal it and place it in a 60°C oven for 6-8 hours; then wash it with...

Embodiment 3

[0060] (1) Clean the glass container

[0061] ① Soak the glass container in 5% v / v Decon90 solution for 2-12 hours;

[0062] ② Ultrasonic cleaning for 15 minutes, pour off the lotion;

[0063] ③Rinse 5 times with deionized water, and sonicate in deionized water for 15 minutes; ④Repeat ③, and then soak the slide in deionized water for later use.

[0064] (2) Amino modification of the inner surface of the glass container

[0065] ① Activate the hydroxyl groups on the surface of the glass container.

[0066] Put the glass container into the plasma cleaning machine for processing, the power is 90w, and the processing time is 2-5min;

[0067] ② Surface modification of glass containers with APTMS (3-aminopropyltrimethoxysilane).

[0068] Dissolve APTMS in 90% ethanol solution to prepare a solution with a volume fraction of 5%. Then pour the solution into a glass container treated with oxygen plasma, seal it and put it in a 60°C oven to react for 6-8 hours; then wash it with eth...

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Abstract

The invention discloses a preparation method of natural polymer-cationic polymer anti-alga coated glass. The preparation method comprises the following steps: firstly activating hydroxyl groups on thesurface of glass; then sequentially reacting the activated surface of the glass with a silane coupling agent having an amino group at the tail end, negatively charged natural polysaccharide, a metalion solution and quaternized polyethyleneimine (QPEI); and repeating the previous step three times to obtain the glass with six layers of coating. According to the invention, lamination treatment is carried out through an amidation reaction of the hydroxyl groups of the natural polysaccharide with the amino groups of QPEI, cation replacement is carried out by utilizing divalent metal ions, and finally, the multi-layer anti-alga coating is successfully constructed on the surface of the glass. Meanwhile, the synergistic effect of the divalent metal ions and QPEI is utilized to achieve a better effect in inhibiting the growth of algae; pollution to the environment is small; and a water body can be continuously kept clear and attractive.

Description

technical field [0001] The invention belongs to the field of antibacterial materials, and relates to a preparation method of natural macromolecule and cationic polymer anti-algae coated glass and a product thereof. Background technique [0002] When the water body of aquatic animals and plants is small, the eutrophication of the water quality is very easy to occur. One of the obvious phenomena is the large-scale reproduction of certain algae in the water body, such as green algae and cyanobacteria, which cause the water body to appear algal blooms and water body eutrophication. change. The mass reproduction of certain green algae will cause obvious changes in the color of the water body, and some species will also attach to the glass wall, seriously affecting the viewing effect of aquariums and household fish tanks. When cyanobacteria multiply in large numbers in the water body, in addition to affecting the appearance, they will also compete with fish for sunlight and oxyge...

Claims

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Application Information

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IPC IPC(8): C03C23/00C03C17/34
CPCC03C17/3405C03C23/006C03C23/0075C03C2217/70C03C2218/111
Inventor 徐福建殷光明丁小康
Owner BEIJING UNIV OF CHEM TECH