阅读说明：本技术 一种富含矿物质维生素的海苔纤维及其制备方法 (Sea sedge fiber rich in mineral substances and vitamins and preparation method thereof ) 是由 刘翔鸥 于 2020-07-01 设计创作，主要内容包括：本发明属于纺织技术领域,更具体地,涉及一种富含矿物质维生素的海苔纤维及其制备方法。本发明提供了一种富含矿物质维生素的海苔纤维,其制备原料包括海苔纤维主体、纳米级纤维素、溶剂。本发明所述的一种富含矿物质维生素的海苔纤维,其富含多种维生素和矿物质,可以增强人体免疫力和促进人体新陈代谢。海苔纤维所织面料具有天然抑菌、吸湿透气和保湿润肤的效果。本申请在海苔纤维的制备过程中还加入了纳米级纤维素,增强了原有纤维的机械性能,由于纳米级纤维素的加入还使得海苔纤维的溶胀性能得到调节,改善了原有的极高溶胀性能,提高了海苔纤维用于高端纺织领域的价值。(The invention belongs to the technical field of textiles, and particularly relates to a seaweed fiber rich in mineral substances and vitamins and a preparation method thereof. The invention provides a seaweed fiber rich in mineral and vitamin, which is prepared from seaweed fiber main body, nano-level cellulose and solvent. The sea sedge fiber rich in mineral and vitamin is rich in various vitamins and minerals, and can enhance the immunity of a human body and promote the metabolism of the human body. The sea sedge fiber woven fabric has the effects of natural bacteriostasis, moisture absorption, ventilation, moisture preservation and skin moistening. The application also adds the nano-grade cellulose in the preparation process of the sea sedge fiber, so that the mechanical property of the original fiber is enhanced, the swelling property of the sea sedge fiber is adjusted due to the addition of the nano-grade cellulose, the original extremely high swelling property is improved, and the value of the sea sedge fiber in the high-end textile field is improved.)

1. A thallus Porphyrae fiber rich in minerals and vitamins is prepared from thallus Porphyrae fiber main body, nanometer level cellulose, and solvent.

2. The laver fiber according to claim 1, wherein the body of the laver fiber is extracted from laver.

3. The sea sedge fiber according to claim 1, wherein the nano-sized cellulose is a cellulose nanocrystal.

4. The sea sedge fiber according to claim 3, wherein the cellulose nanocrystals have an average aspect ratio of 10 to 40.

5. The laver fiber according to claim 1, wherein the solvent is one of N.N-dimethylformamide, dimethyl sulfoxide, paraformaldehyde, and N-methylmorpholine-N-oxide.

6. The laver fiber according to claim 1, wherein the extraction method of the main body of the laver fiber comprises the steps of:

(1) weighing unprocessed thallus Porphyrae, washing with distilled water, and oven drying at 40 deg.C;

(2) adding the dried sea sedge into a sodium hydroxide solution with the mass fraction of 1-5%, heating by using a water bath, and heating for 1-3 hours;

(3) washing the processed thallus Porphyrae with distilled water until pH is 6-8;

(4) freeze-drying cleaned thallus Porphyrae in culture dish for 12-24 hr;

(5) grinding freeze-dried thallus Porphyrae into powder to obtain thallus Porphyrae fiber main body, and storing in sealed bag.

7. The sea sedge fiber according to claim 6, wherein the temperature of the elevated temperature heating in the step (2) is 60 to 100 ℃.

8. A process for the preparation of sea sedge fibres according to any one of claims 1 to 7, comprising the following steps:

(1) weighing the extracted sea sedge fiber main body, and dissolving in a solvent to obtain a solution A;

(2) dissolving the nano-scale cellulose in the solution A to prepare a spinning solution;

(3) and (3) carrying out wet spinning in a coagulating bath at the spinning temperature of 40-80 ℃ to obtain the sea sedge fiber.

9. The process for preparing sea sedge fiber according to claim 8, wherein the spinning temperature in the step (3) is 50 ℃.

10. The method of preparing sea sedge fiber according to claim 8, wherein the coagulation bath in step (3) is at least one selected from the group consisting of barium chloride solution, sodium chloride solution, potassium chloride solution, sodium sulfate solution, zinc sulfate solution, dimethyl sulfoxide solution and nitric acid solution.

Technical Field

The invention belongs to the technical field of textiles, and particularly relates to a seaweed fiber rich in mineral substances and vitamins and a preparation method thereof.

Background

At present, as a textile raw material, people pay more attention to the characteristics of softness, comfort, stability and the like of fabrics, and neglect the important role of abrasion resistance and strength of the fibers. For a fiber with extremely high nutritive value and application value, how to improve the mechanical property and the service life of the fiber is the key of whether the fiber can be widely applied.

The invention aims to invent the seaweed fiber rich in mineral and vitamin, and the use value and market value of the seaweed fiber are increased by improving the mechanical strength of the seaweed fiber. The invention provides the following technical scheme.

Disclosure of Invention

In order to solve the technical problems, the invention provides a seaweed fiber rich in mineral and vitamin, which is prepared from the following raw materials of a seaweed fiber main body, nano-scale cellulose and a solvent; wherein, the seaweed fiber comprises 1.9 parts by weight of seaweed fiber main body, 2.1 parts by weight of nano-grade cellulose and 8 parts by weight of solvent.

As a preferable technical scheme, the sea sedge fiber body is extracted from sea sedge.

As a preferred technical scheme, the nano-scale cellulose is cellulose nanocrystal.

As a preferable technical scheme, the average length-diameter ratio of the cellulose nanocrystal is 10-70.

As a preferable technical scheme, the solvent is one of N.N-dimethylformamide, dimethyl sulfoxide, paraformaldehyde and N-methylmorpholine-N-oxide.

As a preferable technical scheme, the extraction method of the seaweed fiber main body comprises the following steps: (1) weighing unprocessed thallus Porphyrae, washing with distilled water, and oven drying at 40 deg.C; (2) adding the dried sea sedge into a sodium hydroxide solution with the mass fraction of 1-5%, heating by using a water bath, and heating for 1-3 hours; (3) washing the processed thallus Porphyrae with distilled water until pH is 6-8; (4) freeze-drying cleaned thallus Porphyrae in culture dish for 12-24 hr; (5) grinding freeze-dried thallus Porphyrae into powder to obtain thallus Porphyrae fiber main body, and storing in sealed bag.

As a preferable technical scheme, the temperature for raising the temperature and heating in the step (2) is 60-100 ℃.

As a preferred technical scheme, the preparation method of the sea sedge fiber comprises the following steps: (1) weighing the extracted sea sedge fiber main body, and dissolving in a solvent to obtain a solution A; (2) dissolving the nano-scale cellulose in the solution A to prepare a spinning solution; (3) and (3) carrying out wet spinning in a coagulating bath at the spinning temperature of 40-80 ℃ to obtain the sea sedge fiber.

As a preferred technical scheme, the spinning temperature in the step (3) is 50 ℃.

As a preferable technical scheme, the coagulating bath in the step (3) is at least one selected from the group consisting of a barium chloride solution, a sodium chloride solution, a potassium chloride solution, a sodium sulfate solution, a zinc sulfate solution, a dimethyl sulfoxide solution and a nitric acid solution.

Has the advantages that: the seaweed fiber rich in mineral and vitamin is rich in various vitamins and minerals. Can enhance immunity and promote metabolism. The sea sedge fiber woven fabric has the effects of natural bacteriostasis, moisture absorption, ventilation, moisture preservation and skin moistening. The application also adds the nano-grade cellulose in the preparation process of the sea sedge fiber, so that the mechanical property of the original fiber is enhanced, the swelling property of the sea sedge fiber is adjusted due to the addition of the nano-grade cellulose, the original extremely high swelling property is improved, and the value of the sea sedge fiber in the high-end textile field is improved.

Detailed Description

The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.

The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and or interchanged, if not otherwise stated to include all the sub-ranges contained therein.

In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.

In order to solve the technical problems, the invention provides a seaweed fiber rich in mineral and vitamin, which is prepared from the following raw materials of a seaweed fiber main body, nano-scale cellulose and a solvent; wherein, the seaweed fiber comprises 1.9 parts by weight of seaweed fiber main body, 2.1 parts by weight of nano-grade cellulose and 8 parts by weight of solvent.

Preferably, said body of laver fiber is extracted from laver, e.g. from Tochang Yu seaweed Co.

Sea sedge

The thallus Porphyrae is also called Porphyra yezoensis, Rhodophyceae. The algae body is bright purple red or slightly bluish green, oval or long oval, generally over 12-70CM high. The base is round or heart-shaped, the edge is provided with folds, and the cells are arranged orderly, smooth and without sawteeth. The chromoplast star, located in the center, extends in an ovoid or long rod shape. The same male and female plants. The fronds can form monospores for vegetative reproduction. Is a common species along the bank in the north of China, and is the main cultivation algae in the north of the Yangtze river. Is rich in protein, polysaccharide and vitamins, and can be used for food or medicine.

Preferably, the nano-scale cellulose is cellulose nanocrystals, the cellulose nanocrystals exist in the form of a dispersion, and the cellulose nanocrystal dispersion is added to the sea sedge fibers.

Preferably, the average length-diameter ratio of the cellulose nanocrystal is 10-40.

Cellulose nanocrystals

The cellulose nanocrystal is a rod-shaped crystal extracted from cellulose, the diameter of the rod-shaped crystal is 5-20nm, and the length of the rod-shaped crystal is 100nm to a plurality of micrometers. The cellulose nanocrystal is a high-crystallinity nanometer material, and has the characteristics of reproducibility, availability, high strength and the like. Cellulose nanocrystals are generally prepared by acid hydrolysis and oxidation. According to the application, the cellulose nanocrystals are prepared by an acidolysis method, and the prepared cellulose nanocrystals are applied to the reinforcement of the seaweed fiber material, and experiments show that different length-diameter ratios of the cellulose nanocrystals have different fiber reinforcement effects, and the breaking strength of the seaweed fibers reinforced by the cellulose nanocrystals is higher when the average length-diameter ratio is 20. Probably, when the cellulose nanocrystals are dispersed in the seaweed extract, the cellulose nanocrystals with the average length-diameter ratio of less than 20 can be well dispersed in a solvent, so that the rigidity and the toughness of the seaweed fibers are improved, and when the cellulose nanocrystals with the average length-diameter ratio of more than 20 exist in a seaweed fiber spinning solution system, the dispersion performance of the cellulose nanocrystals in the solvent is weakened due to the growth of rod-shaped particles, the hydrogen bonding capability between numerous hydroxyl groups carried on molecules and solvent molecules is weakened, so that the binding capacity of the whole system is reduced, and the average length-diameter ratio of the cellulose nanocrystals for effectively enhancing the mechanical performance is fixed to be 20.

The preparation method of the cellulose nanocrystalline dispersion comprises the following steps: the first step is as follows: weighing 5g of cellulose pulp, and crushing the cellulose pulp under mechanical stirring at 300 rpm; the second step is that: adding the crushed pulp into 200-300 ml of concentrated sulfuric acid solution with the mass fraction of 50-80%, and reacting for 30-90 minutes at 40-100 ℃; the third step: after the reaction is finished, adding the mixed reaction solution into purified water with the volume of 10 times, standing and precipitating completely, and removing supernatant; the fourth step: centrifuging the lower-layer turbid solution at 9000-12000rpm, and gradually washing and centrifuging to neutrality by using distilled water; the fifth step: centrifuging to obtain upper white liquid, i.e. cellulose nanocrystalline dispersion, performing ultrasonic dispersion for 10 minutes, and storing the obtained cellulose nanocrystalline dispersion at 5 ℃ for later use.

Preferably, the solvent is one of N.N-dimethylformamide, dimethyl sulfoxide, paraformaldehyde and N-methylmorpholine-N-oxide.

More preferably, the solvent is dimethyl sulfoxide (CAS number: 67-68-5), available from Shanghai Aladdin Biotechnology Ltd.

Preferably, the method for extracting the main fiber body from the sea sedge comprises the following steps: (1) weighing unprocessed thallus Porphyrae, washing with distilled water, and oven drying at 40 deg.C; (2) adding the dried sea sedge into a sodium hydroxide solution with the mass fraction of 1-5%, heating by using a water bath, and heating for 1-3 hours; (3) washing the processed thallus Porphyrae with distilled water until pH is 6-8; (4) freeze-drying cleaned thallus Porphyrae in culture dish for 12-24 hr; (5) grinding freeze-dried thallus Porphyrae into powder to obtain thallus Porphyrae fiber main body, and storing in sealed bag.

More preferably, the mass fraction of the sodium hydroxide solution in the step (2) is 3%;

further preferably, the temperature rise temperature in the step (2) is 75 ℃;

further preferably, the heating time in the step (2) is 1 hour.

Further preferably, the processed laver of step (3) is washed with distilled water to a pH of 7.

Further preferably, in the step (4), the washed laver is placed in a petri dish and freeze-dried for 12 hours.

Preferably, the preparation method of the sea sedge fiber comprises the following steps: (1) weighing the extracted sea sedge fiber main body, and dissolving in a solvent to obtain a solution A; (2) dissolving the nano-scale cellulose in the solution A to prepare a spinning solution; (3) and (3) carrying out wet spinning in a coagulating bath at the spinning temperature of 40-80 ℃ to obtain the sea sedge fiber.

Further preferably, the spinning temperature in the step (3) is 50 ℃.

Further preferably, the coagulating bath in step (3) is at least one selected from the group consisting of a barium chloride solution, a sodium chloride solution, a potassium chloride solution, a sodium sulfate solution, a zinc sulfate solution, a dimethyl sulfoxide solution and a nitric acid solution; more preferably, the coagulation bath in step (3) is selected from a dimethyl sulfoxide solution.

The wet spinning is commonly used in the art, and is not particularly limited.

The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.

In addition, all the starting materials used are commercially available, unless otherwise specified.