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Preparation method of microalgae-based polymer composite thin film

A composite film and polymer technology, which is applied in the field of preparation of microalgae-based polymer composite films, can solve problems such as no research reports on composite materials, and achieve high breaking strength and elongation at break.

Inactive Publication Date: 2016-08-17
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the known microalgae-polymer composite materials all use polymer as the matrix material, and there is no research report on the preparation of composite materials using microalgae as the matrix material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In a 100ml single-necked flask, add 20g of spirulina homogeneous aqueous solution, 6g of polyvinyl alcohol homogeneous aqueous solution, and 0.6g of glycerol, that is, the dry weight ratio is 1:0.3:0.3, and stir at room temperature for 1 hour to obtain the pouring solution; The pouring liquid is placed in a vacuum drying oven until there are no obvious bubbles on the surface of the pouring liquid, and a foam-free pouring liquid is obtained. The foam-free pouring liquid is poured on a polycarbonate plate and leveled, and then the temperature is programmed to dry. The drying conditions are: initial drying temperature 50°C, 60°C / 1h, 70°C / 1h, 80°C / 1h, 90°C / 1h, 100°C / 1h and 110°C / 1h, starting from the initial drying temperature of 50°C and increasing the temperature by 10°C per hour until the temperature rises to 110°C. The dried film is removed and stored in a desiccator for future use.

[0025] Spirulina homogeneous aqueous solution is prepared by the following method:

...

Embodiment 2

[0030] The difference from Example 1 is that the dry weight ratio of spirulina homogeneous aqueous solution, polyvinyl alcohol homogeneous aqueous solution and glycerin is 1:0.7:0.3.

Embodiment 3

[0034] In a 100ml single-necked flask, add 20g of spirulina homogeneous aqueous solution, 14g of polyvinyl alcohol homogeneous aqueous solution, and 0.6g of glycerin, that is, the dry weight ratio is 1:0.7:0.3, and stir at room temperature for 1 hour to obtain the pouring solution; Add 50 μl of n-butanol to the pouring liquid and continue to stir until there are no obvious bubbles on the surface of the pouring liquid to obtain a foam-free pouring liquid. The foam-free pouring liquid is poured on a polycarbonate plate to be leveled and then dried by temperature programming. The drying conditions are the same as in Example 1. .

[0035] Wherein, the preparation of the polyvinyl alcohol homogeneous aqueous solution and the spirulina homogeneous aqueous solution is the same as in Example 1.

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Abstract

The invention relates to a preparation method of a microalgae-based polymer composite thin film. The preparation method comprises the following steps of mixing a microalgae homogeneous phase water solution, a water soluble polymer homogeneous phase water solution and a plasticizer according to the dry weight mass ratio of 1:(0.1-0.9):(0.1-0.3), so as to obtain a casting liquid; stirring for 0.8-1.2h, and defoaming the casting liquid, so as to obtain a foam-free casting liquid; casting the foam-free casting liquid to a flat plate, heating the cast flat plate according to programs, and drying, so as to obtain the microalgae-based polymer composite thin film. The microalgae-based polymer composite thin film prepared by the preparation method has the advantages that the environment-friendly effect is realized, the toxicity is low or avoided, and the degradability is realized.

Description

technical field [0001] The invention relates to a preparation method of a microalgae-based polymer composite film, in particular to a preparation method of a microalgae-based polymer composite film with high mechanical properties, and belongs to the research field of comprehensive utilization of natural biomass. Background technique [0002] Microalgae are a kind of autotrophic plants that are widely distributed on land and in the ocean, rich in nutrients and high in photosynthetic utilization. algae. According to literature reports, the crude protein content in spirulina is more than 50%, and the crude protein content in chlorella is more than 60%, which have been used as one of the main sources of protein; in addition, algae have a better adsorption effect on metal ions and Used for sewage treatment; microalgae such as spirulina and chlorella have high oil content, and Bioresource technology, 2011, 102, 11018 co-cracks them with polymers to increase the yield of biodiesel...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L89/00C08L29/04C08K5/053
CPCC08J5/18C08J2389/00C08J2429/04C08L89/00C08L2203/16C08L29/04C08K5/053
Inventor 史博梁亮郭永俊陈秋童
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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