Membrane paving method for lignin phenol and formed lignin phenol membrane

A lignin phenol and film-laying technology, which is applied in the fields of chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve problems such as damage to the gold sheet substrate and cumbersome film-laying process, and achieve recycling The effect of increasing the number of times of use, good repeatability, and even surface

Active Publication Date: 2019-04-26
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first purpose of the present invention is to provide a film-laying method for lignin phenol to solve the technical problems in the prior art that the film-laying process is cumbersome and will damage the gold sheet substrate

Method used

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  • Membrane paving method for lignin phenol and formed lignin phenol membrane
  • Membrane paving method for lignin phenol and formed lignin phenol membrane
  • Membrane paving method for lignin phenol and formed lignin phenol membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0045] The coating method for lignin phenol of the present embodiment comprises the following steps:

[0046] (1) Prepare a 10 mg / mL acetone solution of poplar lignin phenol, centrifuge at 3500 rpm for 10 min at 5° C., collect the supernatant, and obtain the treated poplar lignin phenol acetone solution;

[0047] (2) After soaking and cleaning the QCM-D gold flakes with ethanol first, rinse them with distilled water, dry them with nitrogen, and then perform UV cleaning; On the spin coater, centrifuge at 3000rpm for 30s to obtain pretreated QCM-D gold flakes;

[0048] (3) Draw the acetone solution of poplar lignin phenol prepared in 0.15mL step (1) with a pipette, and add it dropwise to the pretreated QCM-D gold sheet obtained in step (2), 1.5 Turn on the spin coater after 1 min, set the spin coating program, the initial spin coating speed is 500r / min, after spinning for 5s, adjust the spin coating speed to 4000r / min, spin coating for 55s;

[0049] (4) After the spin coater i...

Embodiment 2

[0055] The coating method for lignin phenol of the present embodiment comprises the following steps:

[0056] (1) Prepare a 10 mg / mL acetone solution of masson pine ligninphenol, centrifuge at 3500 rpm for 10 minutes at 5°C, remove a very small amount of insoluble matter to obtain a supernatant, and use it as the acetone solution of masson pine ligninphenol after treatment;

[0057] (2) After soaking and cleaning the QCM-D gold flakes with ethanol first, rinse them with distilled water, dry them with nitrogen, and then perform UV cleaning; On the spin coater, centrifuge at 3000rpm for 30s to obtain pretreated QCM-D gold flakes;

[0058] (3) Draw the acetone solution of the processed masson pine ligninol prepared in 0.15mL step (1) with a pipette gun, add dropwise to the pretreated QCM-D gold sheet obtained in step (2), 1.5 Turn on the spin coater after 1 min, set the spin coating program, the initial spin coating speed is 500r / min, after spinning for 5s, adjust the spin coati...

Embodiment 3

[0063] The coating method for lignin phenol of the present embodiment comprises the following steps:

[0064] (1) Prepare an acetone solution of 8 mg / mL poplar lignin phenol, centrifuge at 3500 rpm for 10 min at 5° C., collect the supernatant, and obtain the treated poplar lignin phenol acetone solution;

[0065] (2) After soaking and cleaning the QCM-D gold flakes with ethanol first, rinse them with distilled water, dry them with nitrogen, and then perform UV cleaning; On the spin coater, centrifuge at 3000rpm for 30s to obtain pretreated QCM-D gold flakes;

[0066] (3) Draw the acetone solution of poplar lignin phenol prepared in 0.15mL step (1) with a pipette, and add it dropwise to the pretreated QCM-D gold sheet obtained in step (2), 1.5 Turn on the spin coater after 1 min, set the spin coating program, the initial spin coating speed is 500r / min, after spinning for 5s, adjust the spin coating speed to 4000r / min, spin coating for 55s;

[0067] (4) After the spin coater i...

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Abstract

The invention relates to the technical field of membrane paving, in particular to a membrane paving method for lignin phenol and formed lignin phenol membrane. The method comprises the following steps: dropwise adding a lignin phenol solution to the surface of a QCM-D gold sheet, performing spin coating, dropwise adding the lignin phenol solution to the surface of the QCM-D gold sheet on which lignin phenol is coated 1 to 2min later, performing spin coating, and drying, so as to obtain a lignin phenol membrane. The method has the advantages that the a large amount of hydroxyl (17 to 30wt percent) is contained in the lignin phenol, the content of phenolic hydroxyl is 8 to 17wt percent, the hydroxyl can be completely dissolved in an organic solvent, the surface of the formed lignin phenol membrane is uniform during spin coating on the surface of the QCM-D gold sheet, the lignin phenol can be guaranteed to be completely paved to the QCM-D gold sheet, further the membrane paving mode can ensure that the gold sheet is not damaged, and the gold sheet can be infinitely recycled without man-made scratches.

Description

technical field [0001] The invention relates to the technical field of film laying, in particular to a film laying method for lignophenol and the prepared lignophenol film. Background technique [0002] In the existing related technologies, in order to study the adsorption process of lignin and protein or metal ions, etc., it is necessary to spread lignin into a film for adsorption experiments. However, the three-dimensional structure of lignin makes it difficult to form a uniform film without relying on other media. In order to solve this problem, researchers usually use other synthetic polymers with good affinity with lignin to lay a film first, and then lay a lignin film based on this synthetic polymer film. Commonly used synthetic polymers are polystyrene polymers of different molecular weights. Moreover, the gold flakes need to be treated with ammonia, hydrogen peroxide or sulfuric acid and hydrogen peroxide before laying polystyrene film. [0003] Therefore, it is o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C08H7/00
CPCB01J20/24B01J20/28033C08H6/00
Inventor 任浩冯璋徐栋梁翟华敏
Owner NANJING FORESTRY UNIV
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