A kind of preparation method and application of carbon quantum dot light stabilizer

Abstract

The invention discloses a preparation method and application of a carbon quantum dot light stabilizer. Cheap organic carboxylic acid is adopted as a carbon source, piperylhydrazine is adopted as a modifier, and a carbon quantum dot is synthesized and modified to obtain a nitrogen-doped carbon quantum dot containing a radical scavenger fragment by hydrothermal reaction. The prepared carbon quantum dot light stabilizer is light in color and high in water solubility and light fastness, and has broad application prospect, and when the carbon quantum dot light stabilizer is applied to paper pattern coating as a high-yield pulp paper light stabilizer, a result shows that the carbon quantum dot light stabilizer has a certain inhibition effect on light-induced color reversion of paper and the initial whiteness of the paper can be improved.

Description

technical field

[0001] The invention relates to the field of high-yield pulp light stabilizers, in particular to a method and application of a carbon quantum dot light stabilizer for paper prepared by a hydrothermal method. Background technique

[0002] With the improvement of people's living standards, the demand for paper products continues to rise. At the same time, the area of ​​forests used for papermaking is constantly shrinking, and the problem of shortage of raw materials has become increasingly prominent, which has become one of the important factors restricting the sustainable development of the global papermaking industry. For this reason, how to make full use of forest resources to obtain low-cost, high-brightness, good-quality high-yield pulp has been paid more and more attention by papermaking researchers.

[0003] High-yield mechanical pulp has the advantages of high yield, less environmental pollution, and low cost. However, high-yield pulp retains a large a...

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