Preparation method of sodium-alginate-based nano colloid functional modifier for alginate fibers

Abstract

The invention provides a preparation method of a sodium-alginate-based nano colloid functional modifier for alginate fibers, which comprises the following steps: mixing a sodium alginate water solution with a certain mass percentage and a 0.13-5.2 mol / L soluble metal salt complex solution in a volume ratio of (10-100):1; adding a certain amount of reducer into the mixed solution, and carrying out complete reaction under stirring conditions for 10-160 minutes while controlling the reaction temperature at 10-85 DEG C, thereby obtaining the sodium-alginate-based nano colloid functional modifier. The modifier prepared by the method provided by the invention has the advantages of uniform particle size distribution and low aggregation tendency, and has long-term stability without aggregation and favorable compatibility with a seaweed spinning solution, and the average particle size can be controlled at 25 nm or so; and the method has the advantages of no pollution, low carbon and energy saving; the metal nanoparticles can not aggregate or block the spinneret orifices in the spinning process; and thus, the invention completely implements continuous industrial production of functional alginate fibers.

Description

technical field [0001] The invention relates to the field of preparation of a nano-colloid functional modifier, in particular to the field of preparation of a sodium alginate-based nano-colloid functional modifier for seaweed fibers. Background technique [0002] The 21st century is the century of the ocean. The development and utilization of marine resources is a hot spot that countries are competing to develop. As a marine plant, kelp has an annual regeneration capacity of more than 15 million tons. my country's total seaweed production in 2011 was more than 1 million tons, of which kelp production exceeded 400,000 tons, accounting for more than 90% of the world's total production. China is the country with the largest amount of kelp cultured in the world and has a huge resource advantage. But at present, the utilization of kelp is mainly used directly as food or to extract food additives, and the price per ton varies from 4,000 yuan to tens of thousands of yuan, and the a...

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Problems solved by technology

[0006] It can be seen from the above-mentioned patented method that the current preparation technology of nano-metal powder has high energy consumption, serious pollution, difficult control of nano-particle size, and easy aggregation. It is very difficult to add it to seaweed fiber, especially the lack of a nano Metal modifier and its preparation and application method