Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of electrospinning method of sodium alginate nanofiber

A sodium alginate, electrospinning technology, applied in electrospinning, alginate man-made filament, fiber processing and other directions, can solve the problems of continuous electrospinning and forming difficulties, and achieve a uniform degree of crosslinking and product The effect of good quality and low price

Active Publication Date: 2018-02-27
QINGDAO UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem that the present invention needs to solve for realizing above-mentioned object is, how to obtain the idealized molecular chain of sodium alginate and between the molecular chains firmly, stable, uniform effective entanglement (degree), to stabilize the spinning solution Viscosity performance index, and then effectively solve the technical problem of continuous electrospinning forming difficulties

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of electrospinning method of sodium alginate nanofiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The electrospinning method of sodium alginate nanofibers comprises the following steps:

[0058] The first step, raw material preparation

[0059] In parts by mass, take 4 parts of anhydrous sodium sulfate, 1 part of acetic anhydride and adipic acid mixed anhydride, and 6 parts of sodium alginate;

[0060] The obtained anhydrous sodium sulfate is dissolved in water to prepare a saturated solution, and the obtained mixed acid anhydride is added to the saturated sodium sulfate solution, and the pH value is adjusted to 1-2 to prepare a coagulation bath for subsequent use;

[0061] The second step, the preparation of spinning solution

[0062] (1), the sodium alginate is added deionized water to dissolve, and the sodium alginate solution that is mixed with mass percent concentration is 6%;

[0063] Then, slowly add the prepared sodium alginate solution to the coagulation bath while stirring, and continue stirring for 3 hours until chemically cross-linked sodium alginate g...

Embodiment 2

[0078] Except "the first step, preparation of raw materials: take 5 parts of anhydrous sodium sulfate, 5 parts of acetic anhydride and adipic acid mixed anhydride, and 12 parts of sodium alginate respectively by mass parts;

[0079] The rest are the same as in Example 1.

[0080] After testing, the diameter of the prepared sodium alginate nanofibers is: 145nm±20nm.

Embodiment 3

[0082] In addition to "the first step, preparation of raw materials: in parts by mass, take 4.5 parts of anhydrous sodium sulfate, 3 parts of acetic anhydride and adipic acid mixed anhydride, and 10 parts of sodium alginate.

[0083] Others are the same as in Example 1.

[0084] After testing, the obtained sodium alginate nanofibers have a diameter of 125nm±13nm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses an electrostatic spinning method for sodium alginate nano fibers. Based on the prior art, sodium alginate is chemically cross-linked by using acetic anhydride and adipic acid mixed anhydride as a chemical cross-linker, and the cross-linked sodium alginate gel is dried by combining liquid nitrogen quick freezing with freeze drying to control the direction of reversible reaction and further strengthen the cross-linking effect, thereby well solving a series of problems of low degree and instability of cross-linking of molecular chains, poor spinnability, poor uniformity of spun internal fiber microstructure and the like in the prior art. More importantly, the viscosity of the spinning solution as an important spinning index can be effectively guaranteed to be stabilized within a narrow ideal range all the time, so that a continuous production process is guaranteed. The production process is continuous and stable, the process control is simple, the thickness of fibers is uniform, the product quality is guaranteed and the stability is good.

Description

technical field [0001] The invention relates to a production method of sodium alginate nanofibers, in particular to an electrospinning method of sodium alginate nanofibers. Background technique [0002] Electrospinning has the advantages of simple manufacturing device, low spinning cost, wide variety of spinnable materials, and controllable process. It is an efficient nanofiber preparation method, which can spin tens to hundreds of nanofibers in diameter. [0003] Nanofibers prepared by electrospinning process have high specific surface area, high porosity and good ductility. At present, many polymers have successfully prepared nanofibers by electrospinning. [0004] However, existing research shows that it is very difficult to prepare pure sodium alginate nanofibers by electrospinning (see: Carbohydr Polym, 2011, 85(1):276-279). The reason is that the molecular segments of sodium alginate are rigid, and the molecular chains are always closely overlapped together, which ca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/04C08J3/24D01D5/00C08L5/04
CPCC08J3/24C08J2305/04D01D5/003D01F9/04
Inventor 谭业强隋坤艳张文谦夏延致吴淑贤桑震于梦婕
Owner QINGDAO UNIV