Gelatin bacteriostatic fiber modified by trivalent cerium and preparation method and application thereof

A technology of trivalent cerium and gelatin, which is applied in the field of polymer chemical materials, can solve the problems of fibers being easily attacked by bacteria and poor stability, and achieve the effects of low cost, high strength and wide application

Active Publication Date: 2010-09-15
吉林添正生物科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of gelatin antibacterial fiber modified by trivalent cerium and its preparation method and application, adopt trivalent cerium to modify gelatin fiber, to improve the mechanical strength of gelatin fiber, improve its poor stability in water deficiencies, and address issues such as fiber susceptibility to bacterial attack in wet environments

Method used

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  • Gelatin bacteriostatic fiber modified by trivalent cerium and preparation method and application thereof
  • Gelatin bacteriostatic fiber modified by trivalent cerium and preparation method and application thereof
  • Gelatin bacteriostatic fiber modified by trivalent cerium and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Dissolve 0.4g of cerium nitrate in 10mL of water to obtain a cerium nitrate solution; weigh 20g of gelatin and dissolve in 100mL of water to obtain a gelatin solution. The cerium nitrate solution was added into the gelatin solution (the volume ratio of the cerium salt solution to the gelatin solution was 1 / 10), and stirred at 40° C. for 1 h to prepare a mixed solution. After the above solution was filtered and degassed under reduced pressure, it was wet-spun at 40°C and the spinning speed was controlled at 50mL / h to prepare trivalent cerium-modified gelatin antibacterial fibers in room temperature coagulation solution. The coagulant used was ethanol solution with a volume concentration of 60%, and the fiber was thermally cross-linked at 150° C. for 1 hour in vacuum. Wherein the mass percent content of trivalent cerium in the fiber is 0.65%. Used in surgical sutures, it was found to have antibacterial and anticoagulant functions within 36 hours.

Embodiment 2

[0025] Dissolve 0.4g of cerium nitrate in 20mL of water to obtain a cerium nitrate solution; weigh 40g of gelatin and dissolve in 80mL of water to obtain a gelatin solution. The cerium nitrate solution was added into the gelatin solution (the volume ratio of the cerium salt solution to the gelatin solution was 1 / 4), and stirred at 60° C. for 5 hours to prepare a mixed solution. After the above solution was filtered, degassed under reduced pressure, it was wet-spun at 60°C, the spinning speed was controlled at 50mL / h, and coagulated in the coagulation solution at room temperature to prepare trivalent cerium-modified gelatin fibers. The coagulant used is an ethanol solution with a volume concentration of 80%. The fibers were thermally crosslinked at 200°C for 3 h in vacuum. Wherein the mass percent content of trivalent cerium in the fiber is 0.32%. Used in tissue engineering materials, it has been found to have antibacterial and anticoagulant functions.

Embodiment 3

[0027] Dissolve 0.2 cerium chloride in 10 mL of water to obtain a cerium chloride solution; weigh 50 g of gelatin and dissolve in 100 mL of water to obtain a gelatin solution. The cerium chloride solution was added into the gelatin solution (the volume ratio of the cerium salt solution to the gelatin solution was 1 / 10), and stirred at 60° C. for 3 h to prepare a mixed solution. After filtering the above solution and defoaming under reduced pressure, wet spinning at 60° C. and controlling the spinning speed to 50 mL / h, prepared trivalent cerium-modified gelatin fibers in room temperature coagulation solution. The coagulant used was absolute ethanol. The fibers were thermally crosslinked at 180 °C for 4 h in vacuum. Wherein the mass percent content of trivalent cerium in the fiber is 0.23%. Can be used in the textile field.

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Abstract

The invention relates to gelatin bacteriostatic fiber modified by trivalent cerium and a preparation method and application thereof. The gelatin bacteriostatic fiber is prepared by a method of blending trivalent cerium solution and gelatin solution, performing solution spinning and heating and drying in vacuum. The gelatin bacteriostatic fiber is characterized in that: due to the adoption of the trivalent cerium, the gelatin bacteriostatic fiber not only has the effect of antibacterium and anticoagulation but also has improved strength and water resistance. As the fiber has high mechanical property, biocompatibility and the effect of antibacterium and anticoagulation, the fiber has a wide application prospect in the field of medicament, spinning and the like.

Description

Technical field: [0001] The invention relates to a trivalent cerium-modified gelatin antibacterial fiber, a preparation method and application thereof, and belongs to the field of polymer chemical materials. Background technique: [0002] Regenerated protein fibers are spun from protein solutions extracted from natural milk or plants. The protein resources on the earth are very rich, and many proteins are renewable resources. Therefore, the development of regenerated protein fibers is sustainable and sustainable. circularity. Regenerated protein fiber belongs to green fiber. It is non-toxic, non-polluting, degradable and environmentally friendly in the production process. It is one of the main directions of fiber development in the 21st century. [0003] Gelatin is a macromolecular protein obtained by partial hydrolysis of collagen. Similar to collagen, it has biocompatibility, biodegradability and biological activity unmatched by other synthetic materials, such as: low ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F4/00D01F1/10D01D5/06
Inventor 黄雅钦殷瑞贤
Owner 吉林添正生物科技股份有限公司
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