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Multifunctional biodegradable composite material and preparation method of same

A biodegradable material and biodegradable technology, applied in the field of multifunctional biodegradable composite materials and their preparation, can solve the problems of short duration of drug effect, poor heat resistance, low toxicity, etc., and achieve excellent antibacterial properties and mechanical properties. Excellent, Inexpensive Effects

Active Publication Date: 2017-10-24
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, among the existing antibacterial agents, the carriers and metal ions of inorganic antibacterial agents have low toxicity, and the synthetic organic antibacterial agents have the disadvantages of high toxicity, poor heat resistance, and short duration of drug effect.

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0029] The preparation method of the natural biomass additive in the first step is as follows: the plants are washed, dried, and pulverized, and the pulverized plants are ultrasonically extracted with a solvent at 20-80° C. for 0.1-15 hours according to mass parts 1: (1-50) , cooled to room temperature, suction filtered, and the filtrate was concentrated by rotary evaporation and freeze-dried to obtain a plant extract. The extracted filter residue is dried and passed through a 10-120 mesh sieve, treated with 0.01-10% NaOH solution for 0-120 minutes under the combined action of an alkali treatment auxiliary agent, washed and dried with distilled water, and the plant fiber is obtained.

[0030] The waste plants containing effective dyeing and antibacterial components and rich in fiber in the first step of the present invention include: peanut shells, pomegranate peels, and orange peels.

[0031] The frequency of the ultrasonic waves in the first step is 10-100KHz, and the altern...

Embodiment 1

[0044]In the first step, the peanut shells are washed, dried, and crushed, and the crushed plants are extracted with 95% ethanol at 35°C, with an ultrasonic frequency of 10KHz-25KHz and alternately 30s for 1.6h. After cooling to room temperature, suction filtration, the filtrate was concentrated by rotary evaporation, and freeze-dried to obtain an orange-yellow powdery peanut extract; the extracted filter residue was dried and passed through a 20-mesh sieve, and 0.01% NaOH solution was used in a mass ratio of 1:0.01. Na 2 Under the combined action of S, treat for 30 minutes, wash and dry with distilled water, and make peanut shell plant fiber.

[0045] In the second step, use absolute ethanol to dilute the coupling agent KH-550 with a mass ratio of peanut shell extract and peanut shell fiber of 0.01:1 to a content of 1%, and then blend it with peanut shell extract and peanut shell fiber Dry, put the PBS-based biodegradable material into the internal mixer and heat it. After i...

Embodiment 2

[0048] The first step is to wash, dry and crush the pomegranate peel, and use 4% sodium carbonate to extract the crushed plants with 4% sodium carbonate at 55°C, ultrasonic frequency 40KHz-80KHz, and alternate 15s for 0.5h , after being cooled to room temperature, suction filtration, the filtrate was concentrated by rotary evaporation, and freeze-dried to obtain a yellow powdery pomegranate peel extract; the extracted filter residue was dried and passed through an 80 mesh sieve, and 3% NaOH solution was used in a mass ratio of 1:0.04 Na 2 SO 3 Treated together for 60 minutes, washed with distilled water and dried to obtain pomegranate peel plant fiber.

[0049] In the second step, use absolute ethanol to dilute the coupling agent TML-311 with a mass ratio of pomegranate peel extract and pomegranate peel fiber of 0.06:1 to a content of 1%, and then blend it with pomegranate peel extract and pomegranate peel fiber Dry, put the PBS-based biodegradable material into the internal...

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Abstract

The invention discloses a multifunctional biodegradable composite material and a preparation method of same. The composite material includes a biodegradable material substrate and a natural biomass additive dispersed therein. The preparation method includes preparation of the natural biomass additive and preparation of the multifunctional biodegradable composite material. The method is not depended on mineral resources, such as petroleum, natural gas and the like, so that the composite material is energy-saving and environment-friendly and has simple preparation process and low cost. According to different performances of different biodegradable material substrates, a series of the multifunctional biodegradable composite materials are applied to different fields, such as product packaging, biomedicine, water area environment, agriculture mulching films, stationery and sporting goods, mechanical appliances and the like. The composite material has excellent mechanical performances, can reach 4-5 level in color fastness to rubbing, can reach 90-99% in antibacterial ratio, and can reach 0-1 level in mildew-proofing capability.

Description

technical field [0001] The invention belongs to the technical field of biodegradable materials, and in particular relates to a multifunctional biodegradable composite material and a preparation method thereof. Background technique [0002] In recent years, the research on synthetic polymer materials has advanced by leaps and bounds, which has brought great convenience to people's lives. However, with the application of a large number of polymer materials in various fields, it has caused common hidden dangers to both human beings and the environment, and the pollution of waste polymer materials to the environment has become a worldwide public hazard. The control of white pollution and the search for new environmentally friendly non-petroleum-based polymers are current global concerns. Biodegradable materials are an effective way to treat both the symptoms and the root causes, and have become the needs of sustainable development in my country and the world. However, the devel...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08L3/02C08L1/10C08L5/08C08L89/00C08L97/02C08K9/06C08K9/04C08K5/00C08K5/098
CPCC08L1/10C08L3/02C08L5/08C08L67/02C08L67/04C08L89/00C08L2201/06C08L2205/16C08L97/02C08K9/06C08K9/04C08K5/0058C08K5/098
Inventor 宋洁延小雨骆筱
Owner SHAANXI UNIV OF SCI & TECH
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