Titanium-dioxide-fiber-modified blue-algae-base composite biological plastic and preparation method thereof

Abstract

The invention discloses a titanium-dioxide-fiber-modified blue-algae-base composite biological plastic which comprises the following components in parts by weight: 130-135 parts of blue algae, 9-10 parts of Lactobacillus helveticus, 7-8 parts of Pycnoporus sanguineus spore solution, 5-6 parts of nano titanium dioxide fiber, 6-7 parts of nano greystone fiber, 16-17 parts of soluble small-molecular chitosan, 21-23 parts of fructose, 22-24 parts of aluminum silicate fiber wool, 9-11 parts of pure acrylic emulsion, 1-2 parts of magnesium borate, 3-4 parts of antistatic smooth master batch, 2.3-2.5 parts of sodium alpha-alkenyl sulfonate, 8-9 parts of vinylmethoxysilane and a proper amount of water. By using the deep processing product of the aluminum silicate fiber wool and blue algae to prepare the blue-algae-base biological plastic, the plastic is biodegradable, and has the advantages of favorable fracture resistance, favorable tensile property and favorable antistatic property. The added nano titanium dioxide fibers and nano greystone fibers enhance the fracture resistance and tensile property of the plastic.

Description

technical field [0001] The invention relates to the technical field of cyanobacteria-based biodegradable plastics, in particular to a titanium dioxide fiber modified cyanobacteria-based composite bioplastic and a preparation method thereof. Background technique [0002] Lactic acid and polylactic acid are biochemical products, which use renewable biomaterials as raw materials and use bioengineering technology to make the products biodegradable. With the energy crisis caused by the depletion of petroleum resources and the increasingly serious environmental pollution caused by the chemical industry, it is of great significance to use biomass-based raw materials as substrates to produce lactic acid through microbial fermentation; Negative, without flagella, containing chlorophyll a, not forming chloroplasts, prokaryotes capable of oxygen-producing photosynthesis. Spirulina raw material fermentation has high value-added products such as lactic acid, L-lactic acid and other non-...

AI Technical Summary

Problems solved by technology

Spirulina raw material fermentation has high value-added products such as lactic acid, L-lactic acid and other non-food products. These products can greatly improve the utilization value of cyanobacteria resources and prepare bioplastics. Wuxi Delin Seaweed Water Separation Technology Development Co., Ltd. has developed algae mud Algae powder technology with a moisture content below 10%, these algae powders are exported to the United States to be made into bioplastics at a low cost, and they lack the corresponding technology to directly realize the processing of cyanobacteria into bioplastics. Although they have favorable resources, they are not Benefits cannot be maximized; the domestic use of cyanobacteria is mostly focused on preparing cyanobacteria extracts, cyanobacteria proteins, cyanobacteria fibers and other cyanobacteria and other biomass, and then using the excellent properties of these biomasses combined with other raw materials to prepare some biofilms, and for cyanobacteria directly There are not many reports on the development and utilization of cyanobacteria-based bioplastics

[0003] The direct development and utilization of cyanobacteria to prepare cyanobacteria-based bioplastics usually faces the following two problems: (1), the conversion rate of cyanobacteria to lactic acid through fermentation of cyanobacteria raw materials, which directly determines the utilization efficiency of raw materials; (2), The performance improvement of bioplastics produced by the polymerization of lactic acid, L-lactic acid and polylactic acid

Single modification methods such as plasticization, acid adjustment, cross-linking, filling or blending are often used. However, this single modification method is limited, and the fully degradable plastic film prepared has a single function and high cost, which cannot realize the high-value development of cyanobacteria.