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A kind of cross-linked pectin fiber and preparation method thereof

A pectin and fiber technology, which is applied in fiber treatment, fiber chemical characteristics, rayon chemical post-treatment, etc., can solve the problems of non-crosslinked and water-soluble, etc., to achieve rich biological activity, broad application prospects, good biophase Capacitance and water resistance effects

Active Publication Date: 2017-04-19
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a cross-linked pectin fiber and a preparation method thereof in order to solve the problem that the existing pectin nanofibers are not cross-linked and dissolve in water

Method used

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  • A kind of cross-linked pectin fiber and preparation method thereof
  • A kind of cross-linked pectin fiber and preparation method thereof
  • A kind of cross-linked pectin fiber and preparation method thereof

Examples

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preparation example Construction

[0033] The invention provides a kind of preparation method of cross-linked pectin fiber, the method comprises:

[0034] Step 1: mixing the pectin aqueous solution and the polyethylene oxide aqueous solution, then adding a surfactant and a co-solvent to obtain a mixed solution, and spinning the mixed solution to obtain electrospun nanofibers;

[0035] Step 2: Crosslinking the electrospun nanofibers obtained in Step 1 to obtain crosslinked nanofibers;

[0036] Step 3: washing the cross-linked nanofibers obtained in Step 2 to obtain cross-linked pectin fibers.

[0037] According to the present invention, pectin and polyoxyethylene are formulated into pectin aqueous solution and polyoxyethylene aqueous solution respectively first, the mass percent concentration of described pectin aqueous solution is preferably 2%~10%, according to the present invention, described pectin The source of pectin is not particularly limited, and is preferably citrus, lemon, apple, sunflower, beet or g...

Embodiment 1

[0057] Example 1: Ca 2+ Ionically cross-linked low-ester sunflower pectin fiber

[0058] 1) Electrospinning: first prepare respectively 5% low-ester sunflower pectin aqueous solution (molecular weight is 210,000, degree of esterification 44%) and 5% polyoxyethylene (molecular weight is 5,000,000) aqueous solution, then according to pectin and The mass ratio of polyoxyethylene is 95:5. The low-ester sunflower pectin aqueous solution and polyoxyethylene aqueous solution are mixed, and adding mass percentage concentration is 1% triton 100 and mass percentage concentration is 5% dimethyl sulfoxide , the mixed solution was stirred at room temperature for 3 hours and then stood overnight to obtain a uniform mixed solution without bubbles. The above mixed solution was spun under a high-voltage electric field of 10kV, and the fibers were collected at a distance of 15cm from the spinneret to obtain electrospun nanofibers. fiber;

[0059] 2) Ca 2+ Ionic physical cross-linking: soak 2...

Embodiment 2

[0064] Embodiment 2: through Zn successively 2+ Low-ester amidated apple pectin fiber with ionic physical crosslinking and glutaraldehyde chemical crosslinking

[0065] 1) Electrospinning: first prepare respectively 4% low-ester amidated apple pectin aqueous solution (molecular weight is 300,000, degree of esterification 27%, degree of amidation 23%) and 4% polyethylene oxide (molecular weight is 2,000,000 ) aqueous solution, according to the mass ratio of pectin and polyethylene oxide, the low-ester amidated apple pectin aqueous solution and polyethylene oxide aqueous solution are mixed according to the mass ratio of pectin and polyethylene oxide, and the addition of poloxamer 127 and mass percentage concentration of 0.5% The concentration is 10% dimethylformamide, the mixed solution is stirred at room temperature for 5 hours, and left standing overnight to obtain a uniform mixed solution without bubbles. The above mixed solution is spun under a high-voltage electric field of...

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Abstract

The invention provides a crosslinked pectin fiber and a preparation method thereof, and belongs to the field of macromolecular fiber. The method comprises the steps: firstly, mixing a pectin aqueous solution and a polyoxyethylene aqueous solution, then adding a surfactant and a cosolvent, to obtain a mixed solution, and spinning the mixed solution, to obtain an electrospinned nanofiber; and then crosslinking the obtained electrospinned nanofiber, to obtain a crosslinked nanofiber; and finally, washing the obtained crosslinked nanofiber, and thus obtaining the crosslinked pectin fiber. The invention also provides the crosslinked pectin fiber obtained by the preparation method. The pectin nanofiber contains no other chemical components and enables a stable nanofiber structure to be kept under a condition of water phase, so that the crosslinked pectin fiber has better biocompatibility and water resistance, has relatively high mechanical strength, and can meet a lot of biomedical requirements.

Description

technical field [0001] The invention belongs to the field of polymer fibers, and in particular relates to a cross-linked pectin fiber and a preparation method thereof. Background technique [0002] Pectin (pectin) is a kind of polyanionic natural heteropolysaccharide derived from plants. Based on its good gelling properties, it is widely used as gelling agent and thickener in the food industry. Due to its good biocompatibility, water absorption, and antibacterial properties, pectin has also been gradually applied to hygiene and medical products. In addition, pectin itself has a variety of intrinsic biological activities, including anti-inflammatory, anti-tumor, regulation of complement system, support for bone cell growth, etc., which has attracted extensive attention in recent years and has been prepared into nano / micro particles, hydrogel , porous three-dimensional scaffolds, etc., used in biomedical fields such as cancer treatment, colon drug delivery, bone tissue engine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F11/00D01F9/00D01F1/10D01D5/00
Inventor 胡俊丽刘益春姚冰崔思思周义发孙雪张昕彤
Owner NORTHEAST NORMAL UNIVERSITY
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