22results about "Alginate artificial filaments" patented technology

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 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 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 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.

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.

The present application relates to a kind of heat preservation antibacterial graphene fabric and its preparation method, belong to the technical field of fabric.The textile line of heat preservation antibacterial graphene fabric disclosed in the present application uses graphene filament as the core of composite spinning, and the composite spinning is wrapped by layer, wherein the composite spinning is composed of seaweed fiber filament and modified pure cotton filament, the seaweed fiber filament has good hygroscopicity and antibacterial property, and the modified pure cotton filament is soaked with antibacterial agent and strengthened with curing agent to improve antibacterial time effectiveness, then the seaweed fiber filament and the modified pure cotton filament synergistically improve antibacterial effect, in addition, graphene also has antibacterial property, forming double-layer antibacterial effect inside and outside.When sweat is produced, the seaweed fiber on the inside side contacts water and forms gel layer quickly, effectively prevents the air outside environment from convection with the air inside clothes to reduce heat loss, and the core-spun structure reduces heat transfer, further enhances the heat preservation effect, and the gel layer evaporates with the effect of body temperature and the convection of external air, forming cold and hot dynamic balance.

The invention discloses an alginate aerogel fiber as well as a preparation method and application thereof. The method comprises the following steps: pre-mixing a coagulating bath solvent (such as ethanol) with a sodium alginate aqueous solution according to a specific mass ratio to prepare a uniform spinning solution, carrying out wet spinning, curing in a corresponding coagulating bath, and finally drying at normal temperature and normal pressure to directly obtain the alginate aerogel fiber. The core innovation of the invention lies in a'solvent premixing 'strategy, and the technical problem of collapse of an aerogel pore structure in a normal-temperature drying process is fundamentally solved by reducing the interfacial tension and capillary force of a system. The method is simple in process, low in cost, green, safe and easy for large-scale continuous production, and the obtained alginate aerogel fiber has high specific surface area and high porosity and has wide application prospects in the fields of adsorption, heat insulation, biomedicine and the like.

This invention belongs to the field of valuable metal recovery and water purification technology, and more specifically, relates to an organically covalently cross-linked alginate fiber, its preparation method, and its applications. This invention prepares alginate fibers with good water resistance through organic covalent cross-linking technology, which can be used for the recovery of valuable metals from aqueous solutions, the removal of heavy metals, the softening of drinking water, and the removal of cationic organic pollutants. It can solve the problem of calcium content in existing alginate fibers. 2+ The alginate adsorbent material prepared by ion crosslinking technology suffers from a large number of sacrificed adsorption sites, resulting in low adsorption capacity and limiting its widespread application. The organic covalently crosslinked alginate fiber designed and synthesized in this invention has the characteristics of fast adsorption rate, excellent adsorption performance, and easy solid-liquid separation. Moreover, the organic covalently crosslinked alginate fiber can be regenerated and reused.

This invention discloses a self-early warning fire extinguishing perfluorohexanone microcapsule composite fiber and its preparation method, belonging to the field of wearable smart device manufacturing technology. The composite fiber uses sodium alginate as a matrix, and forms a fiber skeleton by wet spinning to coat perfluorohexanone microcapsules. A carbon nanotube conductive layer is constructed on the fiber surface, forming a continuous and sensitive sensing network. When the ambient temperature is abnormal, the change in the resistance of the conductive layer can issue an early warning signal in real time; simultaneously, the microcapsules inside the fiber are triggered by heat to rapidly release perfluorohexanone fire extinguishing agent, achieving autonomous fire extinguishing. Compared with existing technologies, the composite fiber prepared by this invention has advantages such as intelligent sensing, rapid response, and integrated design. It is suitable for high-end protection fields such as intelligent fire suits, industrial special protective equipment, and individual soldier combat systems, realizing an intelligent upgrade from passive protection to active sensing and response, and promoting the development of intelligent safety wearable technology.

The invention belongs to the technical field of functional composite materials and electromagnetic shielding films, and particularly relates to an oriented layered porous composite film as well as a preparation method and application thereof. The spinning solution is continuously extruded through a mold with a rectangular slit outlet, and the formed jet flow directly enters a coagulating bath system and is cured through a gelation process to form a continuous gel film; and washing the gel film with water, and subsequently carrying out confinement pre-freezing shaping and freeze drying in sequence to obtain the oriented layered porous composite film. The oriented layered porous composite membrane is obtained on the basis of long runner shearing and confinement freeze drying, the preparation process is continuous, large-area preparation is facilitated, meanwhile, the obtained composite membrane shows a low-density, high-orientation and communicated layered pore structure, good mechanical strength is kept, and meanwhile, the oriented layered porous composite membrane has a good application prospect. Excellent electromagnetic shielding effectiveness and electric heating performance are shown, and a novel high-performance material choice is provided for the field of electromagnetic protection.

The electrospinning composition includes a first compound for electrospinning and an electrospinning facilitator intended to stabilize the electrospinning of the first compound. Also described is a method of preparing the composition, the method including mixing the components in water.

The present application belongs to the technical field of hydrogel fibers, and relates to a SA / RGO hollow double-helix hydrogel fiber as well as a preparation method and application thereof. The present application adopts sodium alginate and reduced graphene oxide as main raw materials, mixes the sodium alginate and the reduced graphene oxide (RGO) to prepare a sodium alginate / reduced graphene oxide (SA / RGO) hydrogel fiber with a hollow structure, so that the required water amount of the hydrogel fiber is reduced and high-efficiency response is achieved when the hydrogel fiber is stimulated by an external stimulus, then the spiral structure is controlled and shaping is realized through twisting and re-spiraling, and energy storage is simultaneously performed. In addition, the prepared SA / RGO hydrogel fiber has good cycle stability in application. The SA / RGO hollow hydrogel fiber provided by the present application can be applied to smart windows as a flexible driver, or applied to seawater desalination, and has a wide industrial application prospect.

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.

A polymer comprising alginate, products including such a polymer and methods of making the same are provided, wherein the alginate is ionically crosslinked with a multivalent cation bridged hetero-substituted dicarboxylate salt.

The invention relates to a directional moisture-conducting phase-change temperature-adjusting composite aerogel fiber and a preparation method thereof. The fiber comprises a porous aerogel fiber matrix and a copper-based chalcogenide which is loaded in a pore channel in the aerogel fiber matrix and has photo-thermal capacity and solid-solid phase change capacity; the aerogel fiber is internally provided with an axial moisture conduction channel which is through along the axial direction of the aerogel fiber; the copper-based chalcogenide comprises at least one of a copper-based oxide, a copper-based sulfide and a copper-based selenide with the solid-solid phase transition temperature of 30-80 DEG C. The composite fiber has good photo-thermal and phase change functions, retains the porous structure and mechanical integrity of the aerogel matrix to the greatest extent, has a good directional moisture conduction effect and a stable thermal management effect, can effectively improve the comfort of a human body when being used for manufacturing a wearable article, and has a good application prospect. The technical problems that in the prior art, a composite aerogel material is poor in ventilation and moisture conduction effect, low in durability and unstable in temperature adjusting effect are solved.

The present application discloses seaweed fibers and a method for producing the same, which belongs to the technical field of textile dyeing. The method includes the steps of: producing a spinning solution using a raw material containing sodium alginate; The spinning solution obtained in step S10 is extruded into a coagulation bath to be coagulated and molded to obtain a primary fiber. Step S20, and step S3 of drawing and washing the primary fiber obtained in S20 to obtain seaweed fiber. 0, and step S40 of immersing the seaweed fiber obtained in S30 in a treatment agent for post-treatment. At least one or all of the raw materials in S10, the coagulation bath in S20, and the treatment agent in S30 are The seaweed fiber obtained by the present invention has a high dyeing rate, There is little serious fiber damage and high fastness to soap washing.

This invention discloses a novel gas-phase confinement method for the mass production of alginate-based hydrogel fibers, relating to the field of anionic polysaccharide hydrogel composite fiberization. The hydrogel fibers comprise a hydrogel fiber shell and a powder coating covering the surface of the hydrogel shell. The hydrogel fiber shell is formed in the gas phase by contacting anionic alginate and a crosslinking agent, and comprises the following components by mass percentage: 0.5%–10% anionic alginate solute; 0.5%–20% cationic crosslinking agent; 0.2%–5% aqueous toughening agent; 0.1%–5% outer powder coating; and the balance being water. The method involves a hydrogel gas-phase confinement step, a hydrogel curing step, and a hydrogel mass collection step. This invention solves the problem that alginate-based filamentous hydrogels cannot be rapidly mass-produced due to the depletion of the interfacial crosslinking agent and the long natural curing time, making it suitable for the continuous large-scale production of alginate-based filamentous hydrogels.

The preparation method comprises the following steps: S1, dissolving LiCl in deionized water to prepare a LiCl solution with a certain mass fraction, then slowly adding sodium alginate powder into the LiCl solution, and mechanically stirring at 50-60 DEG C until the mixture is uniform to prepare a sodium alginate solution with a certain concentration; s2, adding a certain amount of a porous material MIL-101 (Cr) and an inorganic pigment into the sodium alginate solution prepared in the step S1, mechanically stirring to obtain a uniform spinning solution, and standing in a refrigerator for defoaming for later use; s3, injecting the spinning solution obtained in the step S2 into a wet spinning machine, extruding the spinning solution through a spinning nozzle, enabling the spinning solution to sequentially pass through a coagulating bath A, a washing tank and a post-treatment tank B, and then drafting and winding the spinning solution to obtain the plant leaf imitating hyperspectral camouflage fiber. The color fastness to washing, dry friction and wet friction reaches grade 4 or above, the humidity and heat resistance reaches grade 1, the phenomena of embrittlement, stickiness or shedding are avoided in the environment of-20 DEG C to 50 DEG C, and the visible light 60-degree glossiness is smaller than or equal to 5.

This invention relates to the fields of bio-fiber materials and stimulus-responsive materials, primarily to a photoresponsive high-strength, high-toughness sodium alginate fiber material and its preparation method. The photoresponsive high-strength, high-toughness sodium alginate fiber material of this invention is prepared by first injecting an aqueous solution of sodium alginate and a double-chain azobenzene surfactant into an aqueous solution of calcium chloride to obtain a wet fiber material. Then, the wet fiber material is stretched and dried to obtain a sodium alginate fiber material with the double-chain azobenzene surfactant and calcium ions as crosslinking points. The photoresponsive high-strength, high-toughness sodium alginate fiber material prepared by this invention possesses both high strength and high toughness, and its strength and toughness can be rapidly and efficiently changed under light irradiation. The photoresponsive high-strength, high-toughness sodium alginate fiber material prepared by this invention can be applied as a smart, high-strength material in the fields of biomedicine and medical materials.