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Preparation method of banana cellulose nanofiber grafted polycaprolactone composite material

A technology of nanofibers and polycaprolactone, which is applied in the field of preparation of banana cellulose nanofiber grafted polycaprolactone composite materials, can solve the problems of easy agglomeration and poor dispersion of banana cellulose nanofibers, and achieve softening Thorough and easier to remove and solve the effects of occupation and pollution

Active Publication Date: 2020-09-15
GUANGXI TEACHERS EDUCATION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, banana cellulose nanofibers have the disadvantages of easy agglomeration and poor dispersion, which is a technical problem that must be solved when using it

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of banana cellulose nanofiber graft polycaprolactone composite material, comprises the following steps:

[0028] S1. Slice the banana stems, dry them in the air for 6 days to obtain banana stem slices, put the banana stem slices into a container, add concentrated sulfuric acid, and soak at 45°C for 2 hours to obtain acidified products;

[0029] S2. The acidified product is boiled three times with lye to obtain the product of three lye boils, and the product is dried until the water content is 50%, and then spread on the table and beat for 0.5h , get banana cellulose;

[0030] S3. Put the banana cellulose into the mixed solution of toluene and ethanol, extract it under reflux at 120°C for 3 hours, after cooling, filter, wash and dry to obtain the banana fiber, put the banana fiber into sodium hydroxide and In the mixed solution of absolute ethanol, stir magnetically at 45°C for 3 hours, filter, wash with water until neutral and dry to obtain banan...

Embodiment 2

[0035] The preparation method of banana cellulose nanofiber graft polycaprolactone composite material, comprises the following steps:

[0036] S1. Slice the banana stems, air-dry them for 8 days to obtain banana stem slices, put the banana stem slices into a container, add concentrated sulfuric acid, soak at 45°C for 2 hours, and obtain an acidified product;

[0037] S2. The acidified product is boiled three times with lye to obtain the product of three lye boils, and the product is dried until the water content is 50%, and then spread on the table and beat for 0.8h , get banana cellulose;

[0038] S3. Put the banana cellulose into a mixed solution of toluene and ethanol, extract it under reflux at 120°C for 4 hours, after cooling, filter, wash and dry to obtain banana fiber, put the banana fiber into sodium hydroxide and In the mixed solution of absolute ethanol, stir magnetically at 45°C for 4 hours, filter, wash with water until neutral and dry to obtain banana fiber silk;...

Embodiment 3

[0045] The preparation method of banana cellulose nanofiber graft polycaprolactone composite material, comprises the following steps:

[0046] S1. Slice the banana stems, air-dry them for 10 days to obtain banana stem slices, put the banana stem slices into a container, add concentrated sulfuric acid, soak at 45°C for 2 hours, and obtain an acidified product;

[0047] S2. The acidified product is boiled three times with lye to obtain the product of three lye boils, and the product is dried until the water content is 50%, and then spread on the table, and beaten for 1 hour, get banana cellulose;

[0048] S3. Put the banana cellulose into the mixed solution of toluene and ethanol, extract it under reflux at 120°C for 5 hours, after cooling, filter, wash and dry to obtain the banana fiber, put the banana fiber into sodium hydroxide and In the mixed solution of absolute ethanol, stir magnetically at 45°C for 5 hours, filter, wash with water until neutral and dry to obtain banana ...

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Abstract

The invention discloses a preparation method of a banana cellulose nanofiber grafting polycaprolactone composite material. The method comprises the following steps: enabling a banana stem to be subjected to slicing, airing, acidification and three times of alkaline liquor boiling to prepare banana cellulose, enabling the banana cellulose to be processed to obtain banana cellulose microcrystal, enabling the banana cellulose microcrystal to be subjected to separation and purification by using activated cation exchange resin so as to obtain banana cellulose nanofiber, and enabling the banana cellulose nanofiber to react with epsilon-caprolactone to prepare the banana cellulose nanofiber grafting polycaprolactone composite material. According to the composite material, the banana stem is used as a raw material, wasted resources are utilized to realize 'turning waste into wealth', the composite material adapts to the vision that people aspire to green living, and a reproducible, natural and green alternate resource is provided, so that the composite material has excellent economic benefit and a broad market prospect.

Description

technical field [0001] The invention relates to the field of novel utilization of plant fibers. More specifically, the present invention relates to a preparation method of banana cellulose nanofiber grafted polycaprolactone composite material. Background technique [0002] Banana, as a large-scale economic crop cultivated in Guangxi Province, has a wide range of cultivated areas, with an annual output of more than 1.07 million tons. Each part of banana has good medicinal value and is rich in high-quality plant fiber, which has many advantages and wide application fields. At present, a variety of new natural plant fibers extracted from plants are green, high-strength, and easy to degrade. Although banana fiber is a promising new type of natural plant fiber, it is still not well developed and utilized at present. People seem to only know to eat the pulp of bananas, but ignore the utilization of the stems and leaves of bananas, banana trees, etc., and wantonly cut them down ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B15/02C08G63/08
CPCC08B15/02C08G63/08
Inventor 庞锦英谭登峰蓝春波莫羡忠刘钰馨李建鸣黄文华
Owner GUANGXI TEACHERS EDUCATION UNIV
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