Nano gold-silver alloy solution having affinity for fibers and preparing method thereof

Abstract

The invention relates to a nano gold-silver alloy solution having affinity for fibers and a preparing method thereof. The preparing method comprises the steps that silver ions and gold ions are addedinto a deionized aqueous solution of amino end group hyperbranched polymer, stirring heating is carried out, a nano silver solution and a nano gold solution are made, and are mixed according to the proportion, a high-temperature hydrothermal reaction is carried out, cooling is carried out, and the nano gold-silver alloy solution of a core-shell structure is made; the nano gold-silver alloy is torispherical, and the grain size ranges from 2 to 30 nm; the nano gold-silver alloy solution can be completely absorbed on the fiber surface at the high temperature, in the use process, silver ions are not released, good biosecurity is achieved, the solution has the strong molecular recognition and combining capacity for fibers such as cotton, silk, wool, calcium alginate fiber, and chitin, through normal temperature or high-temperature water bath, the solution can be completely assembled on the fiber surface, and the problems that the nano material and the fibers are poor in affinity, load efficiency is low, and environment is polluted are solved.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a nanometer gold-silver alloy solution with affinity to fibers and a preparation method thereof. Background technique [0002] With the continuous development of nanotechnology, the synthesis and development of nano-noble metals are also progressing. Nano-metal materials have a series of excellent physical and chemical properties, which are very important to modern industry. For example, noble metals such as nano-gold, silver, and platinum have extremely strong surface Raman enhancement effects, which can be widely used in the detection of trace elements, replacing traditional ICP detection, reducing costs and realizing online rapid detection. Nano-noble metals also have excellent catalytic effects and are the most important reagents in chemical engineering. Among them, nano-platinum is the leader among noble metal catalysts. Nano-platinum can catalyze hydrogen...

AI Technical Summary

Problems solved by technology

[0004] Nevertheless, the application of nano-gold-silver alloys in the antibacterial field also has many insurmountable problems.

First, the stability of high-concentration nano-gold-silver alloy solution; nano-alloy agglomeration, oxidation, etc. will directly affect the antibacterial effect and antibacterial durability of the alloy, and the shelf life of the product will decrease, which is not good for industrial production

Second, nano-alloys lack the necessary active groups, and it is difficult to firmly bond to the surface of organic fibers. During the dyeing process, there are also problems such as low dyeing rate and high content of nano-waste water; this not only reduces the efficiency of functional finishing, but also increases the cost. Cause waste of precious metals and related environmental pollution problems

Third, the safety of nano-alloys

Although the above-mentioned patents have achieved antibacterial effects, the antibacterial effects are limited, and the adsorption to biological fibers such as cotton, hemp, silk, and wool is limited, and there are environmental pollution problems at the same time.

Images