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Modified gelatin fiber

A technology of gelatin and fiber, which is applied in the field of fiber manufacturing, can solve the problems of limiting the application of gelatin, failing to fully reflect the excellent properties of gelatin materials, and adding a large amount of modifiers, so as to achieve simple process, low requirements for production equipment, and improve mechanical properties Effect

Active Publication Date: 2017-04-26
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of modifier added in the blended modified macromolecular material is large (as described in CN 105001463A), so that the excellent performance of the gelatin material itself cannot be fully reflected
The cross-linking agents commonly used in cross-linking modification generally have strong toxicity, such as metal ions, formaldehyde, glutaraldehyde, epoxy compounds, etc., which limit the application of gelatin in the biological and medical fields, so looking for new non-toxic Cross-linking agent becomes a new research direction

Method used

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  • Modified gelatin fiber
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Examples

Experimental program
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Effect test

Embodiment 1

[0077] Step 1, weigh 220 g of gelatin and add it to a beaker filled with 380 mL of water, let it swell in a water bath at 60° C. for 1 h, then stir for 3 h to obtain a gelatin solution; add 0.44 g of TGase enzyme (0.2% gelatin mass) to the gelatin solution %), stirred at 60°C for 1h to obtain spinning dope;

[0078] Step 2, the spinning stock solution is added to the spinning machine, and after vacuum degassing for 2h, enter the coagulation bath from the spinneret with a micropore diameter of 0.09mm to solidify to obtain the primary fiber fiber, and the coagulation bath is 430g of TGase enzyme containing 5% (weight). / L of sodium sulfate aqueous solution, the temperature of the coagulation bath is 40°C, and the spinning speed is 80 m / min;

[0079] Step 3, the as-spun fiber is drawn 3 times at 25°C, and the drawing speed is 180m / min, to obtain the drawn gelatin fiber;

[0080] In step 4, the cross-linking treatment of the stretched gelatin fiber at a cross-linking solution con...

Embodiment 2～4

[0082] The operation steps are the same as in Example 1, the difference is only to change the amount of TGase enzyme added in the cross-linking bath in step 4, the mass concentration of TGase enzyme in the cross-linking bath is respectively 3%, 4% and 5%, and the obtained The finished product gelatin fiber is numbered successively as 2# (embodiment 2), 3# (embodiment 3) and 4# (embodiment 4).

Embodiment 5～7

[0084] Operation steps are identical with embodiment 2, and difference is only to change the cross-linking time in step 4 to be respectively 0.5h, 1.5h and 2.0h, and the finished product gelatin fiber that obtains is numbered successively as 5# (embodiment 5), 6# (implementation) Example 6) and 7# (embodiment 7).

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Abstract

The invention discloses a modified gelatin fiber. Characteristic absorption peaks appear nearby 3290 cm<->, 1628 cm<->, 1527 cm<-> and 1230 cm<-> in the infrared spectrum of the gelatin fiber. The gelatin fiber is prepared by dissolving gelatin in a solvent for swelling and then to mixing with a cross-linking agent, then adding a mixed material obtained in the previous step into spinning equipment so as to obtain nascent fiber, and subjecting the nascent fiber to aftertreatment. According to the invention, transglutaminase is used as the cross-linking agent which is safe to use; and the prepared gelatin fiber has good stability in water and improved mechanical properties and is applicable to the fields of biology and medicine.

Description

technical field [0001] The invention relates to the field of fiber manufacturing, in particular to a modified gelatin fiber prepared by a non-toxic and safe cross-linking agent. Background technique [0002] Gelatin is a kind of peptide molecular polymer, which is obtained by partial hydrolysis of collagen. It has good biocompatibility and degradability and is widely used in food, medicine and other fields. Gelatin fiber is mainly prepared by electrospinning method. Because of its low production efficiency, domestic scholars focus on wet spinning method, but the pure gelatin fiber produced by wet method has low mechanical strength and is easily soluble in water at room temperature. , limiting the scope of application of gelatin. [0003] In order to improve these properties of gelatin, methods such as blending modification or cross-linking modification are usually required. The amount of modifier added in the blended modified macromolecular material is relatively large (as...

Claims

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Application Information

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IPC IPC(8): D01F4/00D01F1/10D01F11/02D01D5/12
CPCD01D5/12D01F1/10D01F4/00D01F11/02
Inventor 王锐董振峰杨憬张秀芹朱志国刘继广张文娟
Owner BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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