CN112030236A - Method for preparing Xinjiang catalpa fruit fiber - Google Patents
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Abstract
The invention discloses a method for preparing Xinjiang catalpa fruit fiber, which takes Xinjiang catalpa fruit as a raw material and prepares the Xinjiang catalpa fruit fiber with the fracture strength of 40.76cN/dtex, the fineness of 75.05um and the length of 6.93cm through the processes of cleaning, airing, drying, pre-oxidation treatment, water washing, secondary bleaching treatment, boiling and bleaching treatment, drying and the like. The research and development of catalpa ovata fruits have great significance to the textile industry, a novel natural green raw material can be provided for the textile industry, and the problems that the raw material is in short supply and the novel variety is lacking in the textile industry are solved; meanwhile, the development of catalpa fruits has great economic significance and has positive significance for promoting the income-creating work of farmers.
Description
Technical Field
The invention belongs to the technical field of waste biomass resource recycling, and particularly relates to a Xinjiang catalpa fruit fiber method.
Technical Field
China is the largest textile production country and export country in the world, and the textile industry occupies a very important position in national economy in China. At present, some common natural fibers (such as cotton, wool, hemp, silk and the like) are continuously developed in China, a plurality of textile products are researched, and the textile products have a large share in the market. The development of new natural fibers is an inevitable trend. The natural plant fiber has excellent performances which are incomparable with various synthetic fibers, such as comfortable wearing, excellent air permeability, good moisture absorption and sweat releasing performance, high strength, easy degradation, no environmental pollution after being discarded, and the like. The natural plant fiber developed by utilizing agricultural wastes can save resources, change waste into valuable, protect the environment and meet the strategy of sustainable development.
Catalpa is also called as queen wood, is an ornamental tree and has certain medicinal value, the fruits are slender like cowpea, and the ripe fruits can be used as agricultural wastes to fall into the field for accumulation or incineration and can not be utilized, thereby not only wasting resources, but also polluting the environment. Therefore, the development and utilization of catalpa ovata fruits are of great significance, a novel natural green raw material can be provided for the textile industry, and the problems that the raw material is in short supply and the novel variety is lacking in the textile industry are solved; meanwhile, the method has great economic significance, can develop catalpa fruits from a new angle, can recycle the waste catalpa fruits, improves the use value of the catalpa fruits, and has certain positive influence on the income of farmers in Xinjiang area; meets the national green environment requirement and the national policy of sustainable development.
The soft and slender catalpa fruit fiber is firstly prepared for developing catalpa fruit resources, and the method for preparing the catalpa fruit fiber is degumming. Degumming is a preorder process of catalpa fruit processing, can provide excellent raw materials for the subsequent textile process of catalpa fruits, directly influences whether the subsequent processing can be smoothly carried out or not in good and bad degumming effect, and plays a vital role in the whole catalpa fruit fiber processing. In the prior art, relevant reports about the preparation of catalpa fruit fibers are not found, and if the catalpa fruit fibers are successfully prepared, a new way is opened for the development and utilization of waste catalpa fruit resources.
Disclosure of Invention
The invention aims to provide a method for preparing catalpa fruit fibers, which makes full use of waste catalpa fruit resources, avoids resource waste and environmental pollution caused by burning and accumulation, improves the economic value of the waste catalpa fruits, and provides a novel natural green raw material for the textile industry. The utilization value of catalpa ovata fruits is improved, and the social and economic benefits are increased.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a method for preparing Xinjiang catalpa fruit fiber is characterized by comprising the following steps: the Xinjiang catalpa fruit is used as a raw material, and the Xinjiang catalpa fruit fiber is prepared by a degumming method; the method comprises the following steps:
(1) cleaning: selecting fresh Xinjiang catalpa fruits as raw materials, washing the raw materials, and removing dust, microorganisms and partial pesticide residues on the inner seeds and surfaces of the catalpa fruits to ensure the stability of product quality;
(2) and (3) airing: airing the Xinjiang catalpa fruit cleaned in the step (1) in a ventilated place;
(3) and (3) drying: cutting the aired Xinjiang catalpa fruit into about 10cm for vacuum drying;
(4) pre-oxygen treatment: placing the dried Xinjiang catalpa fruit in the step (3) in a pre-oxidation treatment solution for 60min-120min, and heating to 80-90 ℃;
(5) washing with water: placing the obtained Xinjiang catalpa fruit subjected to pre-oxidation treatment in the step (4) in hot water for repeatedly cleaning to remove surface colloid and impurities;
(6) and (3) secondary bleaching treatment: placing the washed Xinjiang catalpa fruit in the step (5) into a secondary bleaching treatment solution, heating to 50-60 ℃, treating for 45-60 min, and further removing lignin in the catalpa fruit;
(7) acid washing: acid-washing Xinjiang catalpa fruits obtained in the step (6) after the secondary bleaching treatment with 1g/L sulfuric acid to remove residual effective chlorine on the catalpa fruits;
(8) washing with water: repeatedly washing the catalpa ovata fruits subjected to acid washing in the step (7) in water to be neutral;
(9) alkali oxygen treatment: placing the Xinjiang catalpa fruit subjected to the water washing treatment in the step (8) into an alkaline oxidation treatment solution, heating to 80-90 ℃, treating for 60-90 min, and removing redundant colloid and pigment;
(10) washing with water: repeatedly washing the Xinjiang catalpa fruit fibers obtained in the step (9) in hot water to remove redundant impurities and medicines;
(11) drying: and (3) drying the Xinjiang catalpa fruit fiber obtained in the step (10) in a vacuum oven to obtain the finished Xinjiang catalpa fruit fiber.
Preferably, the vacuum drying conditions in step (3) are 60 ℃ for 120 min.
Under the preferable condition, the bath ratio of the Xinjiang catalpa fruit to the pre-oxidation treatment liquid in the step (4) is 1g:15-20ml, wherein 15g/L-25g/L of sodium hydroxide, 15g/L-25g/L of hydrogen peroxide and 2g/L-4g/L of sodium carbonate are added, and the pre-oxidation treatment condition is 80-90 ℃ and 60-120 min.
In a preferred case, the scrubbing in step (5) is repeated 3 times with hot water at 80 ℃.
Under the preferable condition, the bath ratio of the Xinjiang catalpa fruit bleaching treatment liquid in the step (6) is 1g:15-20ml, the sodium hypochlorite concentration is 10g/L-20g/L, the sodium carbonate concentration is 2g/L-6g/L, and the bleaching condition is 50-60 ℃ and 45-60 min.
In a preferred case, the washing in step (7) is carried out for 5min with 1g/L sulfuric acid.
In a preferred case, the step (8) is repeated 3 times with tap water.
Under the preferable condition, the bath ratio of the Xinjiang catalpa fruit to the alkaline oxygen treatment solution in the step (9) is 1g:15-20ml, the sodium hydroxide concentration is 6g/L-18g/L, the hydrogen peroxide concentration is 6g/L-18g/L, the sodium carbonate concentration is 2g/L-4g/L, and the alkaline oxygen condition is 80-90 ℃ and 60-90 min.
In a preferable case, the rubbing is repeated 3 times with hot water of 80 ℃ in the step (10), and then the washing is repeated 2 times with tap water.
Preferably, the vacuum drying conditions in step (11) are 80 ℃ for 120 min.
The Xinjiang catalpa fruit fiber is prepared by the method.
The Xinjiang catalpa fruit fiber prepared by the method has the advantages of simple process, high production efficiency, low cost and good quality, the fracture strength of the Xinjiang catalpa fruit fiber prepared by the method is 40.76cN/dtex, the fineness of 75.05um, the length of 4.89cm and the whiteness of 49.2 percent, excellent raw materials are provided for subsequent textile processes, meanwhile, the pollution caused by stacking and burning of waste catalpa fruits is reduced, the utilization value of the catalpa fruits is improved, and the social and economic benefits are increased.
The specific implementation mode is as follows:
the following non-limiting examples will provide those of ordinary skill in the art with a more complete understanding of the present invention, but are not intended to be in any way limiting
Formula (iv) limits the invention.
Example 1
The preparation method of the Xinjiang catalpa fruit fiber comprises the following steps:
(1) cleaning: selecting fresh Xinjiang catalpa fruits as raw materials, washing the raw materials, and removing dust, microorganisms and partial pesticide residues on the inner seeds and surfaces of the catalpa fruits to ensure the stability of product quality;
(2) and (3) airing: airing the cleaned Xinjiang catalpa fruit in a ventilated place;
(3) and (3) drying: cutting the aired Xinjiang catalpa fruit into about 10cm, and vacuum drying at 60 ℃ for 120 min;
(4) pre-oxygen treatment: placing the dried Xinjiang catalpa fruit obtained in the step (3) in a bath ratio of 1:20, heating the pre-oxidized treatment solution with 15g/L of hydrogen peroxide, 15g/L of sodium hydroxide and 4g/L of sodium carbonate to 90 ℃ for 90 min;
(5) washing with water: repeatedly washing the catalpa ovata fruits subjected to the pre-oxidation treatment in the step (4) in hot water at 80 ℃ for 3 times to remove surface colloid and impurities;
(6) and (3) secondary bleaching treatment: placing the washed Xinjiang catalpa fruit in the step (5) into a secondary bleaching treatment solution, wherein the bath ratio is 1:15, the concentration of sodium hypochlorite is 20g/L, the concentration of sodium carbonate is 6g/L, the temperature is 60 ℃, and the time is 60min, so as to further remove lignin in the catalpa fruit;
(7) acid washing: washing the Xinjiang catalpa fruits obtained in the step (6) after the secondary bleaching treatment with 1g/L sulfuric acid for 5min to remove residual effective chlorine on the catalpa fruits;
(8) washing with water: repeatedly washing the catalpa ovata fruits subjected to acid washing in the step (7) in water to be neutral;
(9) alkali oxygen treatment: placing the Xinjiang catalpa fruit subjected to the water washing treatment in the step (8) into an alkaline oxidation treatment solution, wherein the bath ratio is 1:20, the concentration of sodium hydroxide is 15g/L, the concentration of hydrogen peroxide is 12g/L, the concentration of sodium carbonate is 4g/L, the temperature is 90 ℃, and the time is 60min to remove redundant impurities and pigments;
(10) washing with water: repeatedly washing the Xinjiang catalpa fruit fibers obtained in the step (9) in hot water at 80 ℃ for 3 times, and washing with tap water for 2 times to remove redundant impurities and medicines;
(11) drying: drying the Xinjiang catalpa fruit fibers obtained in the step (10) in a vacuum oven at the temperature of 80 ℃ for 120min to obtain finished Xinjiang catalpa fruit fibers;
the Xinjiang catalpa fruit fiber is prepared by the method. The fiber breaking strength of the catalpa fruit obtained in the case is 40.76cN/dtex, the fineness is 75.05um, the length is 4.89cm, and the whiteness is 49.2%.
Example 2
The preparation method of the Xinjiang catalpa fruit fiber comprises the following steps:
(1) cleaning: selecting fresh Xinjiang catalpa fruits as raw materials, washing the raw materials, and removing dust, microorganisms and partial pesticide residues on the inner seeds and surfaces of the catalpa fruits to ensure the stability of product quality;
(2) and (3) airing: airing the cleaned Xinjiang catalpa fruit in a ventilated place;
(3) and (3) drying: cutting the aired Xinjiang catalpa fruit into about 10cm, and vacuum drying at 60 ℃ for 120 min;
(4) pre-oxygen treatment: placing the dried Xinjiang catalpa fruit obtained in the step (3) in a bath ratio of 1:15, heating the pre-oxidized treatment solution with the concentration of 20g/L of hydrogen peroxide, the concentration of 15g/L of sodium hydroxide and the concentration of 4g/L of sodium carbonate to 80 ℃ for 120 min;
(5) washing with water: repeatedly washing the catalpa ovata fruits subjected to the pre-oxidation treatment in the step (4) in hot water at 80 ℃ for 3 times to remove surface colloid and impurities;
(6) and (3) secondary bleaching treatment: placing the washed Xinjiang catalpa fruit in the step (5) into a secondary bleaching treatment solution, wherein the bath ratio is 1:20, the concentration of sodium hypochlorite is 15g/L, the concentration of sodium carbonate is 4g/L, the temperature is 60 ℃, and the time is 60min, so as to further remove lignin in the catalpa fruit;
(7) acid washing: washing the Xinjiang catalpa fruits obtained in the step (6) after the secondary bleaching treatment with 1g/L sulfuric acid for 5min to remove residual effective chlorine on the catalpa fruits;
(8) washing with water: repeatedly washing the catalpa ovata fruits subjected to acid washing in the step (7) in water to be neutral;
(9) alkali oxygen treatment: placing the Xinjiang catalpa fruit subjected to the water washing treatment in the step (8) into an alkaline oxidation treatment solution, wherein the bath ratio is 1:20, the concentration of sodium hydroxide is 15g/L, the concentration of hydrogen peroxide is 12g/L, the concentration of sodium carbonate is 4g/L, the temperature is 90 ℃, and the time is 60min to remove redundant impurities and pigments;
(10) washing with water: repeatedly washing the Xinjiang catalpa fruit fibers obtained in the step (9) in hot water at 80 ℃ for 3 times, and washing with tap water for 2 times to remove redundant impurities and medicines;
(11) drying: drying the Xinjiang catalpa fruit fibers obtained in the step (10) in a vacuum oven at the temperature of 80 ℃ for 120min to obtain finished Xinjiang catalpa fruit fibers;
the Xinjiang catalpa fruit fiber is prepared by the method. The fiber breaking strength of the catalpa fruit obtained in the case is 38.89cN/dtex, the fineness is 75.52um, the length is 4.42cm, and the whiteness is 40.8%.
Example 3
The preparation method of the Xinjiang catalpa fruit fiber comprises the following steps:
(1) cleaning: selecting fresh Xinjiang catalpa fruits as raw materials, washing the raw materials, and removing dust, microorganisms and partial pesticide residues on the inner seeds and surfaces of the catalpa fruits to ensure the stability of product quality;
(2) and (3) airing: airing the cleaned Xinjiang catalpa fruit in a ventilated place;
(3) and (3) drying: cutting the aired Xinjiang catalpa fruit into about 10cm, and vacuum drying at 60 ℃ for 120 min;
(4) pre-oxygen treatment: placing the dried Xinjiang catalpa fruit obtained in the step (3) in a bath ratio of 1:20, heating the pre-oxidized treatment solution with 15g/L of hydrogen peroxide, 15g/L of sodium hydroxide and 4g/L of sodium carbonate to 90 ℃ for 90 min;
(5) washing with water: repeatedly washing the catalpa ovata fruits subjected to the pre-oxidation treatment in the step (4) in hot water at 80 ℃ for 3 times to remove surface colloid and impurities;
(6) and (3) secondary bleaching treatment: placing the washed Xinjiang catalpa fruit in the step (5) into a secondary bleaching treatment solution, wherein the bath ratio is 1:20, the concentration of sodium hypochlorite is 20g/L, the concentration of sodium carbonate is 4g/L, the temperature is 60 ℃, and the time is 60min, so as to further remove lignin in the catalpa fruit;
(7) acid washing: washing the Xinjiang catalpa fruits obtained in the step (6) after the secondary bleaching treatment with 1g/L sulfuric acid for 5min to remove residual effective chlorine on the catalpa fruits;
(8) washing with water: repeatedly washing the catalpa ovata fruits subjected to acid washing in the step (7) in water to be neutral;
(9) alkali oxygen treatment: placing the Xinjiang catalpa fruit subjected to the water washing treatment in the step (8) into an alkaline oxidation treatment solution, wherein the bath ratio is 1:20, the concentration of sodium hydroxide is 15g/L, the concentration of hydrogen peroxide is 15g/L, the concentration of sodium carbonate is 4g/L, the temperature is 90 ℃, and the time is 60min to remove redundant impurities and pigments;
(10) washing with water: repeatedly washing the Xinjiang catalpa fruit fibers obtained in the step (9) in hot water at 80 ℃ for 3 times, and washing with tap water for 2 times to remove redundant impurities and medicines;
(11) drying: drying the Xinjiang catalpa fruit fibers obtained in the step (10) in a vacuum oven at the temperature of 80 ℃ for 120min to obtain finished Xinjiang catalpa fruit fibers;
the Xinjiang catalpa fruit fiber is prepared by the method. The fiber breaking strength of the catalpa fruit obtained in the case is 36.35cN/dtex, the fineness is 79.63um, the length is 3.96cm, and the whiteness is 47.4%.
Example 4
The preparation method of the Xinjiang catalpa fruit fiber comprises the following steps:
(1) cleaning: selecting fresh Xinjiang catalpa fruits as raw materials, washing the raw materials, and removing dust, microorganisms and partial pesticide residues on the inner seeds and surfaces of the catalpa fruits to ensure the stability of product quality;
(2) and (3) airing: airing the cleaned Xinjiang catalpa fruit in a ventilated place;
(3) and (3) drying: cutting the aired Xinjiang catalpa fruit into about 10cm, and vacuum drying at 60 ℃ for 120 min;
(4) pre-oxygen treatment: placing the dried Xinjiang catalpa fruit obtained in the step (3) in a bath ratio of 1:20, heating the pre-oxidized treatment liquid with 15g/L of hydrogen peroxide, 15g/L of sodium hydroxide and 0.2g/L of sodium carbonate to 90 ℃ for 90 min;
(5) washing with water: repeatedly washing the catalpa ovata fruits subjected to the pre-oxidation treatment in the step (4) in hot water at 80 ℃ for 3 times to remove surface colloid and impurities;
(6) and (3) secondary bleaching treatment: placing the washed Xinjiang catalpa fruit in the step (5) into a secondary bleaching treatment solution, wherein the bath ratio is 1:20, the concentration of sodium hypochlorite is 17.5g/L, the concentration of sodium carbonate is 4g/L, the temperature is 60 ℃, the time is 60min, and further removing lignin in the catalpa fruit;
(7) acid washing: washing the Xinjiang catalpa fruits obtained in the step (6) after the secondary bleaching treatment with 1g/L sulfuric acid for 5min to remove residual effective chlorine on the catalpa fruits;
(8) washing with water: repeatedly washing the catalpa ovata fruits subjected to acid washing in the step (7) in water to be neutral;
(9) alkali oxygen treatment: putting the Xinjiang catalpa fruit subjected to acid washing in the step (6) into an alkaline oxidation treatment solution, wherein the bath ratio is 1:20, the concentration of sodium hydroxide is 15g/L, the concentration of hydrogen peroxide is 10g/L, the concentration of sodium carbonate is 5g/L, the temperature is 90 ℃, and the time is 60min to remove redundant impurities and pigments;
(10) washing with water: repeatedly washing the Xinjiang catalpa fruit fibers obtained in the step (9) in hot water at 80 ℃ for 3 times, and washing with tap water for 2 times to remove redundant impurities and medicines;
(11) drying: drying the Xinjiang catalpa fruit fibers obtained in the step (10) in a vacuum oven at the temperature of 80 ℃ for 120min to obtain finished Xinjiang catalpa fruit fibers;
the Xinjiang catalpa fruit fiber is prepared by the method. The fiber breaking strength of the catalpa fruit obtained in the case is 39.78cN/dtex, the fineness is 89.17um, the length is 5.32cm, and the whiteness is 44.1%.
Claims (5)
1. A method for preparing Xinjiang catalpa fruit fiber is characterized by comprising the following steps:
(1) cleaning: selecting fresh Xinjiang catalpa fruits as raw materials, washing the raw materials, and removing dust, microorganisms and partial pesticide residues on the inner seeds and surfaces of the catalpa fruits to ensure the stability of product quality;
(2) and (3) airing: airing the Xinjiang catalpa fruit cleaned in the step (1) in a ventilated place;
(3) and (3) drying: cutting the aired Xinjiang catalpa fruit into about 10cm for vacuum drying;
(4) pre-oxygen treatment: placing the dried Xinjiang catalpa fruit in the step (3) in a pre-oxidation treatment solution for 60min-120min, and heating to 80-90 ℃;
(5) washing with water: placing the obtained Xinjiang catalpa fruit subjected to pre-oxidation treatment in the step (4) in hot water for repeatedly cleaning to remove surface colloid and impurities;
(6) and (3) secondary bleaching treatment: placing the washed Xinjiang catalpa fruit in the step (5) into a secondary bleaching treatment solution, heating to 50-60 ℃, treating for 45-60 min, and further removing lignin in the catalpa fruit;
(7) acid washing: acid-washing Xinjiang catalpa fruits obtained in the step (6) after the secondary bleaching treatment with 1g/L sulfuric acid to remove residual effective chlorine on the catalpa fruits;
(8) washing with water: repeatedly washing the catalpa ovata fruits subjected to acid washing in the step (7) in water to be neutral;
(9) alkali oxygen treatment: placing the Xinjiang catalpa fruit subjected to the water washing treatment in the step (8) into an alkaline oxidation treatment solution, heating to 80-90 ℃, treating for 60-90 min, and removing redundant colloid and pigment;
(10) washing with water: repeatedly washing the Xinjiang catalpa fruit fibers obtained in the step (9) in hot water to remove redundant impurities and medicines;
(11) drying: and (3) drying the Xinjiang catalpa fruit fiber obtained in the step (10) in a vacuum oven to obtain a Xinjiang catalpa fruit fiber finished product.
2. The method for preparing Xinjiang catalpa fruit fiber as recited in claim 1, wherein the catalpa fruit is washed in step (1), and the seeds inside the catalpa fruit are removed in addition to removing the impurities and dust on the surface of the catalpa fruit.
3. The preparation method of Xinjiang catalpa fruit fiber according to claim 1, wherein the bath ratio of the pre-oxidation treatment liquid prepared in the step (4) is 1g:15-20ml, and 15g/L-25g/L sodium hydroxide, 15g/L-25g/L hydrogen peroxide and 2g/L-4g/L sodium carbonate are added.
4. The preparation method of Xinjiang catalpa fruit fiber according to claim 1, wherein the bath ratio of the prepared bleaching treatment solution in the step (6) is 1 g/15-20 ml, the concentration of sodium hypochlorite is 10g/L-20g/L, and the concentration of sodium carbonate is 2g/L-6 g/L.
5. The preparation method of Xinjiang catalpa fruit fiber according to claim 1, wherein the bath ratio of the alkali oxygen treatment solution prepared in the step (9) is 1g:15-20ml, the sodium hydroxide concentration is 6g/L-18g/L, the hydrogen peroxide concentration is 6g/L-18g/L, and the sodium carbonate concentration is 2g/L-4 g/L.
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