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 modifi

Method used

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  • Modified gelatin fiber
  • Modified gelatin fiber
  • Modified gelatin fiber

Examples

Experimental program
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Effect test

Example Embodiment

[0076] Example 1

[0077] Step 1. Weigh 220 g of gelatin into a beaker containing 380 mL of water, let stand in a 60℃ water bath to swell for 1 hour, then stir for 3 hours to obtain a gelatin solution; add 0.44g of TGase enzyme (0.2% of the mass of gelatin) to the gelatin solution. %), stirred at 60°C for 1h to obtain spinning dope;

[0078] Step 2. Add the spinning dope to the spinning machine, and after vacuum degassing for 2 hours, the spinneret with a micropore diameter of 0.09 mm enters the coagulation bath to obtain nascent fiber fibers. The coagulation bath is 430 g containing 5% (weight) TGase enzyme. / L sodium sulfate aqueous solution, coagulation bath temperature is 40℃, spinning speed is 80 m / min;

[0079] Step 3, the nascent fiber is drafted 3 times at 25°C, the drafting speed is 180m / min, to obtain the drafted gelatin fiber;

[0080] Step 4. Put the drawn gelatin fiber in the cross-linking solution (mass fraction of TGase enzyme) 2%, temperature 25°C, cross-linking treat...

Example

[0081] Examples 2~4

[0082] The operation steps are the same as in Example 1, except that the amount of TGase enzyme added to the cross-linking bath in step 4 is changed. The mass concentrations of TGase enzyme in the cross-linking bath are 3%, 4%, and 5%, respectively. The finished gelatin fibers are sequentially numbered 2# (Example 2), 3# (Example 3) and 4# (Example 4).

Example

[0083] Examples 5-7

[0084] The operation steps are the same as in Example 2, except that the cross-linking time in step 4 is changed to 0.5h, 1.5h and 2.0h respectively, and the finished gelatin fibers obtained are sequentially numbered 5# (Example 5), 6# (implementation) Example 6) and 7# (Example 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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