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Preparation method for superabsorbent antibacterial fiber

A technology of water absorption and fiber, which is applied in fiber treatment, textiles and papermaking, etc., can solve the problems of low release rate, cytotoxicity, poor thermal stability, etc., and achieve the effect of good water absorption, good antibacterial property and high water absorption

Inactive Publication Date: 2014-04-23
FAR EASTERN NEW CENTURY COPRRATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of inorganic antibacterial materials on fibers is complicated and expensive (known from U.S. Patent No. 6,333,093, No. 6,451,003 and No. 6,267,782), and there are also problems such as cytotoxicity and low release rate, resulting in its overall antibacterial effect limited
In addition, in terms of organic antibacterial materials, it is well known in the art that quaternary ammonium salts are commonly used as disinfectants and antibacterial agents for fibers, which also have the advantage of long-lasting antibacterial effects, but they have poor thermal stability and cannot be used in plastics or fiber spinning. processing, so the application still has its limitations

Method used

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  • Preparation method for superabsorbent antibacterial fiber
  • Preparation method for superabsorbent antibacterial fiber
  • Preparation method for superabsorbent antibacterial fiber

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preparation example Construction

[0026] In order to make the preparation method of the present invention have a better preparation effect, the pH value of the aforementioned sodium hypochlorite aqueous solution is preferably in the range of 6-8; when the pH value is too high in an alkaline environment, it is easy to cause polyglutamic acid fibers. The reaction speed with sodium hypochlorite in sodium hypochlorite aqueous solution is slow, the degree of oxidation is poor and the effect is not good; when the pH is lower than 6, the reaction speed will increase, but at the same time, it will cause the breakage of the peptide bond (amide bond) and the decrease of the molecular weight, and the destruction The structure of polyglutamate fibers.

[0027] In order to control the pH value of the aforementioned sodium hypochlorite aqueous solution to be kept within a desired range during the reaction process, it is preferable to further add a pH value buffer to the sodium hypochlorite aqueous solution to adjust the pH v...

Embodiment 1

[0038] The polyglutamic acid fibers were soaked in a sodium hypochlorite aqueous solution with a concentration of 0.4 wt %, and the pH value was adjusted between 6-8 with a 0.5 N phosphoric acid aqueous solution, and the fibers were soaked for 40 seconds and taken out. The fibers were rinsed twice with water and left to dry.

Embodiment 2

[0040] The polyglutamic acid fibers were soaked in a sodium hypochlorite aqueous solution with a concentration of 0.3 wt %, and the pH value was adjusted between 6-8 with a 0.5 N phosphoric acid aqueous solution, and then taken out after soaking for 1 minute. The fibers were rinsed twice with water and left to dry.

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Abstract

The invention discloses a preparation method for an antibacterial and absorbent polyglutamic acid fiber. The preparation method comprises the following step of: soaking a polyglutamic acid fiber into an aqueous solution of sodium hypochlorite, wherein a relational expression I between the soaking time T of the polyglutamic acid fiber and the concentration X of the aqueous solution of the sodium hypochlorite is that: (T-64.55X<2>+50X) is more than or equal to 10.2 and is less than or equal to 15.2 (I), wherein X=0.006-0.4 percent by weight.

Description

technical field [0001] The present invention relates to a preparation method of an antibacterial fiber, in particular to a preparation method of a superabsorbent polyglutamic acid fiber with antibacterial properties. Background technique [0002] Super absorbent materials have a wide range of applications because they have the ability to absorb water and retain water that is tens to hundreds of times their own mass after absorbing water. The superabsorbent materials commonly used in this field can be mainly divided into two categories, one of which is based on carbohydrates, such as starch, chitosan, sodium alginate and carboxymethyl cellulose (CMC) and many others. Carbohydrates, which are natural materials, have good biodegradability, but their applicability is limited due to their low water absorption rate (usually no more than 10 times). The other type is chemically synthesized polymers, such as polyester materials such as acrylates or vinyl alcohol. Compared with the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/30D06M101/34
Inventor 黄若暐刘家昌蔡英男
Owner FAR EASTERN NEW CENTURY COPRRATION
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