86results about "Alginate artificial filaments" patented technology

The present invention provides a fiber aggregate with improved mouthfeel. A fiber aggregate according to the present invention comprises a plurality of fibers. The fiber aggregate includes a non-animal protein, and an alginic acid component including a divalent metal salt of alginic acid. In the fiber aggregate in a water-saturated state, the water content R1 is 71 wt% or more and the content R2 of the alginic acid component is 2.0 wt% or more in terms of sodium alginate. In the fiber aggregate, the water content R1 is, for example, 88 wt% or less. The content R2 of the alginic acid component in terms of sodium alginate is, for example, 10 wt% or less.

The present invention provides a fiber assembly having an improved texture. This fiber assembly includes a plurality of fibers. The fiber assembly has a non-animal protein and alginic acid containing a divalent metal salt of alginic acid. When the fiber assembly is saturated with water, the water content R1 is 71 wt% or more, and the alginic acid content R2, calculated as sodium alginate, is 2.0 wt% or more. In the fiber assembly, the water content R1 is, for example, 88 wt% or less. The alginic acid content R2, calculated as sodium alginate, is, for example, 10 wt% or less.

The invention discloses a special antibacterial and antioxidant biosensing nano-composite preservative film for fermented food in the technical field of biochemistry, GOx and Lac are synergistically loaded on a nano-carrier to construct a multifunctional composite film, the loading capacity and catalytic efficiency of enzyme are remarkably improved by the high specific surface area and surface active sites of the nano-carrier, and the antibacterial and antioxidant biosensing nano-composite preservative film can be applied to the field of biochemistry. Meanwhile, the synergistic effect of the two enzymes endows the composite membrane with multiple functions: GOx catalyzes glucose to oxidize into hydrogen peroxide (H2O2), Lac catalyzes and oxidizes polyphenol substances, and the combination of GOx and Lac can realize antibacterial, antioxidant and biosensing functions at the same time. In addition, due to the introduction of the porous structure and the matrix material of the nano composite membrane, the mechanical property and the biocompatibility of the membrane are further enhanced, and the application potential of the membrane in food packaging, medical dressing and biosensors is widened.

The present invention provides a hydrogel manufacturing apparatus capable of suppressing contamination of impurities from formation of a hydrogel until usage thereof. A hydrogel manufacturing apparatus (100) comprises: a first flow path (212) through which a hydrogel precursor flows; a second flow path (222) through which a gelling agent for gelling the hydrogel precursor flows; a first merging point (216) between the first flow path (212) and the second flow path (222); a housing container (400) for housing a hydrogel formed by contact between the hydrogel precursor and the gelling agent; and a hydrogel flow path (300) for connecting at least the housing container (400) and the first merging point (216) in a closed manner.

The invention discloses a preparation method of a composite hydrogel fiber for solar seawater desalination, which comprises the following steps: (1) putting sodium alginate powder into deionized water for 2-4 times, and mixing to obtain a mixed solution; (2) stirring until the sodium alginate powder is completely dissolved, and performing primary defoaming for 1 hour to obtain a sodium alginate solution; (3) adding the MXene suspension into the sodium alginate solution to obtain a sodium alginate / MXene mixed solution; (4) carrying out ultrasonic treatment for 30 minutes, and carrying out secondary defoaming, so as to obtain a sodium alginate / MXene spinning solution; (5) filling an injector with the sodium alginate / MXene spinning solution, enabling the injector to enter a CaCl2 coagulating bath to form uniform gel fibers, and collecting the generated gel fibers; and (6) carrying out secondary crosslinking for 6-10 hours by using glutaraldehyde, and then soaking and washing in deionized water. On the basis of an existing hydrogel evaporation material, the evaporation rate and the salt resistance durability of the evaporator are improved to the maximum extent, and the efficient water transmission rate and large-scale production are achieved.

The invention discloses an HOF-SA humidity-sensitive ion fiber, a preparation method and a self-powered humidity sensor. The preparation method comprises the following steps: preparing an HOF solution; preparing a spinning solution; preparing a solidification liquid; preparing an HOF (at) SA humidity-sensitive fiber; and preparing the HOF (at) SA humidity-sensitive ion fiber. The self-powered humidity sensor disclosed by the invention is small in size and can be made into a dimension specification of 3mm * 1mm * 1mm under a limiting condition; corresponding voltage can be output in an all-weather and static mode according to environment humidity; the preparation process is simple, low in cost and suitable for batch production; use is flexible, series connection and parallel connection are facilitated, and the circuit board can be directly mounted on a PCB in a surface mounting manner; the method has the advantage of short response / recovery time.

A gel fiber manufacturing apparatus includes: a first ejection portion configured to eject a main liquid containing a core liquid; a second ejection portion provided to surround a radially outer side of the first ejection portion and configured to eject a sheath fluid that hardens the core liquid; and a sheath fluid supply portion configured to alternately apply to the sheath fluid a constant pressure and a high pressure to supply the sheath fluid to the second ejection portion, the high pressure being higher than the constant pressure.

The invention discloses a solar interface evaporator with adjustable pores and vertical channels, which comprises a container for storing seawater to be evaporated, a heat absorption and heat conduction layer floating on the seawater to be evaporated is arranged in the container, a cylindrical three-dimensional evaporation part for continuously evaporating the seawater is arranged on the heat absorption and heat conduction layer, and the vertical channels are communicated with the cylindrical three-dimensional evaporation part. The cylindrical three-dimensional evaporation part downwards penetrates through the lower surface of the heat absorption and heat conduction layer and extends below the seawater surface, the fixing device is used for connecting the cylindrical three-dimensional evaporation part to the heat absorption and heat conduction layer, and heat insulation layers are arranged on the surfaces of the side wall and the bottom of the container respectively. The heat supply / heat insulation model is adopted, the'heat evaporation 'theory is used as the inventive concept, efficient water transmission, high evaporation rate and large-scale production are achieved, and the heat supply / heat insulation model is combined, so that popularization in practical application can be greatly promoted in the future.

The invention provides a deodorant bio-based wool blended yarn and a preparation method thereof, and belongs to the technical field of blended yarns. The deodorization bio-based wool blended yarn is prepared by modifying and assembling three bio-based materials; the method comprises the following steps: performing surface reconstruction on hemp fibers by using ionic liquid, and converting rigid surfaces of the hemp fibers into permanently soft and high-moisture-absorption structures; a tea polyphenol in-situ polymerization technology is adopted, so that a layer of durable anti-oxidation and odor-resistant nano coating is connected to the wool fiber; the preparation method comprises the following steps: physically locking antibacterial chitosan in an alginate network by adopting a wet spinning technology to prepare a non-dissolution functional core yarn; the three components are precisely combined through a core spinning technology to form a synergistic core-shell structure, a shell is responsible for resisting oxidation from the source and creating a dry and bacteriostatic microenvironment, and a core actively kills bacteria and performs humidity management, so that coexistence of comfort, lasting functionality and sustainability is realized.

The invention relates to the technical field of composite fiber preparation, and particularly discloses an anti-pilling textile composite fiber material and a preparation method thereof.The anti-pilling textile composite fiber material is prepared through the following steps that S1, functional fibers are prepared; s2, preparing modified covering yarn; s3, twisting and yarn manufacturing; s4, preparing a composite fiber material; according to the heat-resistant anti-pilling functional fiber, the heat-resistant anti-pilling component is added into the functional fiber, and a flexible long alkyl chain containing unsaturated double bonds on the heat-resistant anti-pilling component can be chemically crosslinked with sulfydryl on the modified sodium alginate to form a three-dimensional network structure; a rigid benzene ring structure contained in the functional fiber and a rigid pyrimidine ring structure contained in the modified sodium alginate can generate pi-pi interaction, and through the combined action of the rigid benzene ring structure and the rigid pyrimidine ring structure, the anti-pilling property, the ultraviolet resistance and the heat resistance of the composite fiber material are improved.

The present application discloses an alginate fiber and a preparation method thereof, and belongs to the technical field of textile fabric dyeing. The preparation method of the alginate fiber includes: S10: preparing a spinning solution with a raw material including sodium alginate; S20: extruding the spinning solution obtained in S10 into a solidification bath to allow solidification molding to obtain a primary fiber; S30: drawing and water-washing the primary fiber obtained in S20 to obtain an alginate fiber; and S40: soaking the alginate fiber obtained in S30 in a finishing agent to allow a post-treatment, where at least one or all of the raw material in S10, the solidification bath in S20, and the finishing agent in S30 include(s) a five-membered cyclic quaternary ammonium salt polymer. The alginate fiber obtained above has a high dye uptake, a small fiber strength loss, and a high soaping fastness.

The invention discloses a host-guest supermolecule dynamically linked alginate fiber and a preparation method and application thereof, alginate is used as a substrate, and the surface of the alginate is dynamically linked with a three-dimensional network structure formed by a beta-cyclodextrin polymer and an adamantane polymer through host-guest interaction. The fiber has excellent hydrogen peroxide selectivity and stability, not only can effectively produce hydrogen peroxide, but also is expected to be applied to multiple fields due to the unique fiber structure.

The invention discloses a metal ion induced alginate aerogel fiber as well as preparation and application thereof. The method comprises the following steps: pre-mixing a sodium alginate solution with a coagulating bath solvent to obtain a uniform spinning solution; extruding the spinning solution into an alcohol coagulating bath through wet spinning to form sodium alginate primary gel fibers; then, introducing the nascent fiber into a calcium ion cross-linking solution with a specific concentration for cross-linking and curing; and finally, drying at normal temperature and normal pressure to obtain the calcium alginate aerogel fiber. The method is simple in process and low in cost, and the obtained fiber has wide application prospects in the fields of adsorption separation, heat insulation, tissue engineering and the like.

The invention provides an anti-infection healing-promoting alginate dressing, and belongs to the technical field of medical dressings. The dressing comprises an antibacterial barrier layer, an alginate multifunctional layer and a one-way moisture conducting layer which are sequentially arranged, the antibacterial barrier layer is a PCL / alginate (SA) film, the alginate multifunctional layer contains bioactive glass, nano ZnO, alginate dressing and other components, the one-way moisture conducting layer is a PCL film, and all the surface layers are compounded into a whole through a hot pressing process. According to the invention, a formula of the multifunctional alginate dressing with excellent performance is constructed, a compounding process of each layer of material is designed, and meanwhile, pores of the antibacterial barrier film are controlled. The alginate dressing and the bioactive glass are combined, the double functions of healing promotion and infection resistance are achieved, the effect is outstanding, the dressing body is free of medicine components, and use is safe and reliable.

The invention discloses a preparation method of alginate fibers and the alginate fibers, the preparation method comprises the following steps: (1) taking seaweed raw materials, crushing, pickling, adjusting the pH value to 5.5-8.5 after pickling, and adjusting the viscosity to obtain a seaweed solution; (2) mixing the seaweed solution with the sodium alginate solution to obtain a spinning solution; and (3) taking the spinning solution for spinning, drafting and post-processing to prepare the alginate fiber. According to the method, the seaweed raw materials are crushed and then subjected to acid treatment, components not suitable for spinning can be efficiently separated out, main spinning components and a plurality of bioactive factors in the components can be reserved, the process for preparing the seaweed fiber is continuous, simple and efficient, and the method has the outstanding characteristics of energy conservation and consumption reduction and the advantage of reducing the production cost; low-cost and large-scale fibrosis application of seaweed resources is facilitated; the alginate fiber prepared by the invention not only has excellent antibacterial and flame-retardant properties, but also is rich in seaweed bioactive factors, and green, safe, environment-friendly and healthy production and life are promoted.

The invention discloses a bio-based cool fabric and a preparation method thereof, and relates to the technical field of functional textile materials. When the bio-based cool fabric is prepared, firstly, furandicarboxylic acid, octafluoro-1, 6-hexanediol and itaconic acid are subjected to copolycondensation and then react with gamma-mercaptopropyltrimethoxysilane modified boron nitride, melt spinning is conducted, and heat conduction type hydrophobic fibers are prepared; secondly, extruding the sodium alginate spinning solution containing silver nitrate into a calcium chloride composite solution containing ascorbic acid, and performing in-situ reduction to obtain nano-silver particle loaded alginate fibers; and finally, performing rib-type composite weaving on the heat-conducting hydrophobic fibers and the nano-silver particle loaded alginate fibers according to a specific mass ratio to obtain the bio-based cool fabric. The bio-based cool fabric prepared by the invention has excellent heat-conducting property, moisture-conducting property and antibacterial property.

The application discloses a kind of immobilized fluorescent encoding microspheres hydrogel fiber and its preparation method and application, belong to biomedical technology field, the method is: with water-soluble polymer solution as shell solution, with the water-soluble polymer solution containing fluorescent encoding microspheres as core solution, shell solution and core solution are injected into rotating coagulation bath by coaxial needle, solidified as immobilized fluorescent encoding microspheres hydrogel fiber, or, the water-soluble polymer solution containing fluorescent encoding microspheres is injected into rotating coagulation bath by injection needle, solidified as immobilized fluorescent encoding microspheres hydrogel fiber.The method process is simple, can realize the quick immobilization of fluorescent encoding microspheres, and the hydrogel fiber prepared by the method can be repeatedly observed under fluorescence imaging microscope, can be long-term preserved, has good application prospect in detection field.

The application discloses a preparation method of a composite hydrogel fiber for solar seawater desalination, and comprises the following steps: (1) sodium alginate powder is put into deionized water in 2-4 times for mixing to obtain a mixed solution; (2) the sodium alginate powder is completely dissolved by stirring, and primary defoaming is carried out for 1 h to obtain a sodium alginate solution; (3) MXene suspension is added into the sodium alginate solution to obtain a sodium alginate / MXene mixed solution; (4) secondary defoaming is carried out by ultrasonic for 30 min to obtain a sodium alginate / MXene spinning solution; (5) the sodium alginate / MXene spinning solution is loaded into a syringe and enters a CaCl2 coagulation bath to form uniform gel fibers, and the generated gel fibers are collected; and (6) glutaraldehyde is used for secondary crosslinking for 6-10 h, and then the gel fibers are soaked and washed in deionized water. On the basis of existing hydrogel evaporation materials, the evaporation rate and salt resistance and durability of the evaporator are maximally improved, and high-efficiency water transmission rate is realized and large-scale production is realized.

The invention relates to the technical field of biology, in particular to a recombinant coral-spider silk fusion protein and functional alginate fiber and application thereof. The recombinant coral-spider silk fusion protein provided by the invention comprises the recombinant coral-spider silk fusion protein formed by fusing spider silk protein or rattan silk protein and coral protein. The invention designs a fusion protein only containing spider silk protein and coral protein. The recombinant coral-spider silk fusion protein is applied to alginate fibers, colored spinning of the alginate fibers can be achieved, and the spun fibers are high in color fastness, superior to original fibers in strength and elongation and bright and stable in color.

The invention discloses a preparation method of a composite phase change fiber, the composite phase change fiber and application of the composite phase change fiber, and the preparation method comprises the following steps: (1) adding octadecane microcapsules into an aqueous solution containing sodium alginate, and stirring I to obtain a solution I; (2) adding graphene nanosheets into the solution I obtained in the step (1), stirring II to obtain a spinning solution, and standing; and (3) putting the standing spinning solution obtained in the step (2) into a wet spinning device for wet spinning, and drying to obtain the composite phase change fiber, wherein in the wet spinning device, an outlet at the tail end of a spinning head is arranged in a coagulating bath. The process condition requirement is low, and the prepared phase change fiber is linear, has the characteristics of no leakage, high heat storage density, no toxicity, good flexibility, excellent light absorption performance and the like, can adjust the enthalpy value, and has a great prospect in the field of human body heat management.

The present application relates to the technical field of biological fiber materials and stimuli-responsive materials, and mainly relates to a sodium alginate strong fiber material with light regulation performance and a preparation method thereof.The sodium alginate strong fiber material with light regulation performance is prepared by first injecting a water solution of sodium alginate and a double-chain spiropyran surfactant into a water solution of calcium chloride to obtain a fiber material, and then soaking, stretching and drying the obtained fiber material to obtain a sodium alginate fiber material with double-chain spiropyran surfactant and calcium ions as crosslinking points.The sodium alginate strong fiber material with light regulation performance prepared by the present application is a high-strength and high-toughness material with strength and toughness comparable to spider dragline silk, and can realize efficient regulation of strength and toughness under light conditions.The sodium alginate strong fiber material with light regulation performance prepared by the present application can be applied to the fields of biology, medicine and medical materials as an intelligent strong material.

The invention discloses an inorganic particle embedded spinning method for improving the performance of organic fibers, and belongs to the technical field of functional fiber preparation. According to the method, inorganic powder particles are embedded into a spinning solution of organic fibers, and the composite fibers with remarkably improved acid and alkali resistance are prepared by utilizing a wet spinning process. The method comprises the following specific steps: mixing an organic fiber raw material and inorganic powder, and stirring at high speed to form a uniform spinning solution; defoaming the spinning solution, then carrying out wet spinning, stretching the extruded fiber, and immersing into a coagulating bath to form the fiber; and finally, carrying out post-treatment to obtain the dried composite fiber. Compared with the prior art, by introducing the ultrasonic vibration device, the heating device and the magnetic stirring device, the layering problem during mixing of inorganic powder and organic fibers is solved, it is ensured that inorganic particles are evenly distributed on the surfaces of the fibers, the acid and alkali resistance of the fibers is remarkably improved, meanwhile, the mechanical property and the dyeing property of the fibers are kept, and the application prospect is wide. Wide application prospects are realized.

The invention discloses a novel gas phase confinement method for batch preparation of alginate hydrogel fibers, and relates to the field of anionic polysaccharide hydrogel composite fibrosis, and the hydrogel fibers comprise hydrogel fiber shells and powder coatings coating the surfaces of the hydrogel shells; the hydrogel fiber shell is a hydrogel fiber formed in a gas phase after anionic alginate and a cross-linking agent are in contact, and the hydrogel fiber shell comprises the following components in percentage by mass: 0.5-10% of anionic alginate solute; 0.5%-20% of a cationic cross-linking agent; 0.2%-5% of a water-based toughening agent; 0.1%-5% of an outer layer powder coating; and the balance of water. The hydrogel is prepared through a hydrogel gas phase confinement step, a hydrogel curing step and a hydrogel batch collection step. The method solves the problem that the alginate filamentous hydrogel is limited by depletion of an interface cross-linking agent and cannot be quickly batched due to long natural curing time, and is suitable for continuous large-scale production of the alginate filamentous hydrogel.

Provided is a method for enhancing anti-oxidative ability, anti-bacterial ability, anti-inflammatory ability and / or anti-allergic ability of a textile. The method comprises adding a cannabidiol in an alginate fiber comprising cannabidiol, wherein the textile comprises a yarn comprising the alginate fiber comprising cannabidiol, the alginate fiber comprising cannabidiol comprises the cannabidiol and an alginate, and the cannabidiol disperses in the alginate fiber comprising cannabidiol.

The invention relates to a sodium alginate fiber, a preparation method thereof and reconstituted tobacco. Wherein the surface of the sodium alginate fiber is provided with a groove structure. The groove structure obviously increases the specific surface area of the fiber, provides more adsorption sites, can more effectively adsorb more smoke agents and improve the load rate of the smoke agents, and is beneficial to locking the smoke agents and reducing the volatilization loss of the smoke agents in the processing and storage processes; the combustion characteristic of the reconstituted tobacco can be optimized through the groove structure, and more smoke is generated in the combustion process of the reconstituted tobacco; in the smoking process, the groove structure can better release spice components, so that the cigarette shows richer aroma levels, and the sensory smoking quality of the cigarette is improved.

An alginate-based fiber is made of a composition comprising an alginate, a cellulose and a polyol plasticizer, such as glycerol. The fiber is produced through extrusion in a curing bath containing calcium. The fiber provides excellent strength and flexibility in its unhydrated state for textile applications. The fiber can be used to produce textiles as compostable alternatives to petrochemical based polymers.

Described is a method for preparing microfibres (6) containing living microalgae (1), comprising the steps of: preparing and mixing microalgae (1) and a biological material (2) in a nutrient medium (4); performing microfluid spinning (5) on the polymerized microalgae mixture (1) and the biological material (2); wherein the microfluidic spinning (5) is carried out in a microfluidic spinning chip (11) equipped with a spinning die (13) having a "fluted" cross-section, such that a fluted cross-section (14) is obtained.

A process is described for preparing a microfibre (6) with living microalgae (1) inside, including the steps of: preparing and mixing micro-algae (1) and a biomaterial (2) in a nutritional medium (4 ); and micro-fluidic spinning (5) of the micro-algae mixture (1) and the biomaterial (2) which is polymerized; wherein the micro-fluidic spinning (5) is carried out in a micro- fluidic spinning chip (11), provided with a spinning die (13) having a "grooves" section, so as to obtain a grooved section (14).

The invention belongs to the technical field of functional composite material preparation, and particularly relates to a preparation method of buoyancy-oriented continuous spinning hydrogel ultralight fiber, the ultralight fiber is composed of a hydrogel matrix and a lightweight filler, and the buoyancy-oriented continuous spinning hydrogel ultralight fiber is prepared by adjusting the hydrophilic / hydrophobic property, the cross-linked network and the density of a lightweight functional microphase and the gel matrix. The interface interaction among multiple phases can be optimized, so that the overall mechanical property and the buoyancy orientation degree of the fiber are enhanced. Besides, continuous preparation of the composite fiber can be realized by skillfully using a buoyancy drafting orientation technology generated by density difference between a gel precursor and a coagulating bath, the method is lower in consumption and more efficient, and does not have complicated post-treatment procedures, and the hydrogel fiber prepared by the method has the characteristics of being ultra-light, high in orientation, continuous, low in consumption and efficient, and does not have complicated post-treatment procedures.

This invention provides an anti-infective and healing-promoting alginate dressing, belonging to the field of medical dressing technology. The dressing comprises an antibacterial barrier layer, an alginate multifunctional layer, and a one-way moisture-wicking layer arranged sequentially. The antibacterial barrier layer is a PCL / alginate (SA) membrane. The alginate multifunctional layer contains bioactive glass, nano-ZnO, and alginate dressing components. The one-way moisture-wicking layer is a PCL membrane. All layers are composited using a hot-pressing process. This invention constructs a high-performance alginate multifunctional dressing formulation and designs the composite process for each layer, while controlling the porosity of the antibacterial barrier membrane. This invention combines alginate dressing with bioactive glass to achieve dual functions of promoting healing and anti-infection, resulting in outstanding efficacy. Furthermore, the main body of the dressing contains no drug components, making it safe and reliable to use.