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Anticoagulant fiber membrane and preparation method and application thereof

A fiber membrane and anti-coagulation technology, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, textiles and papermaking, etc., can solve the problems of reducing the stability of membrane materials and the stability of modifiers, and achieve anti-coagulation effects Good, good hydrophilic performance effect

Inactive Publication Date: 2018-11-27
GUIYANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the modified membrane material obtained by blending in the prior art, after using for a period of time, the stability of the modifier becomes worse, causing the modifier to separate out from the modified membrane material, such as the prior art (Polymers for Advanced Technologies, 2014 , 25,851) discloses the use of polyvinylpyrrolidone blended with polyethersulfone to improve the anticoagulant performance of polyethersulfone, although the anticoagulant performance of polyethersulfone after modification is improved, but the polyvinylpyrrolidone modifier It will gradually precipitate out during use, reducing the stability of the membrane material

Method used

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  • Anticoagulant fiber membrane and preparation method and application thereof
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  • Anticoagulant fiber membrane and preparation method and application thereof

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preparation example Construction

[0030] In the present invention, there is no special requirement on the source of the metal organic framework material with carboxyl groups, and the products well known to those skilled in the art are used or prepared by themselves. When the metal organic framework material with carboxyl group is obtained by self-preparation, the preparation method of the metal organic framework material with carboxyl group preferably includes the following steps:

[0031] (a) mixing monosodium 5-thioisophthalate, copper nitrate, N,N-dimethylformamide and water to obtain a mixed material liquid; then standing the mixed material liquid to precipitate precipitation;

[0032] (b) mixing the precipitate obtained in the step (a) with an aqueous ethanol solution, standing still, and depositing crystals to obtain a metal organic framework material with a carboxyl group.

[0033] In the present invention, it is preferred to mix monosodium 5-thioisophthalate, copper nitrate, N,N-dimethylformamide and w...

Embodiment 1

[0078] A metal-organic framework material Cu 2 (μ 2 -OH 2 ) 2 (HSIP) 2 (H 2 O) 6 Hybrid polyvinylidene fluoride membrane anticoagulant fiber membrane preparation method, the method steps are as follows:

[0079] (1) Dissolve monosodium 5-thioisophthalate (0.932 mmol) in 3 mL of deionized water and N,N-dimethylformamide (volume ratio 1:1) and stir at 70°C for 10 minutes. Add Cu(NO 3 ) 2 ·3H 2 O (0.340 mmol) aqueous solution 0.5 mL, stirred for 30 minutes. Filtration, the mother liquor was left standing for 4 weeks, precipitation occurred, and the precipitation was dissolved in a mixed solution of 2mL of deionized water and ethanol (volume ratio 1:1), and a blue-green solution was obtained at room temperature. After standing for 2 weeks, a blue-green solution was obtained. color crystals, washed with deionized water, dried and ground to obtain metal organic framework materials with carboxyl groups;

[0080] (2) Add 0.1 parts by mass of metal-organic framework material...

Embodiment 2

[0084] A metal-organic framework material Cu 2 (μ 2 -OH 2 ) 2 (HSIP) 2 (H 2 O) 6 Hybrid polyvinylidene fluoride membrane anticoagulant fiber membrane preparation method, the method steps are as follows:

[0085] (1) Dissolve monosodium 5-thioisophthalate (0.932 mmol) in 3 mL of deionized water and N,N-dimethylformamide (volume ratio 1:1) and stir at 70°C for 10 minutes. Add Cu(NO 3 ) 2 ·3H 2O (0.340 mmol) aqueous solution 0.5 mL, stirred for 30 minutes. Filtration, the mother liquor was left standing for 4 weeks, precipitation occurred, and the precipitation was dissolved in a mixed solution of 2mL of deionized water and ethanol (volume ratio 1:1), and a blue-green solution was obtained at room temperature. After standing for 2 weeks, a blue-green solution was obtained. color crystals, washed with deionized water, dried and ground to obtain metal organic framework materials with carboxyl groups;

[0086] (2) Add 4 parts by mass of metal-organic framework materials w...

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Abstract

The invention provides an anticoagulant fiber membrane and a preparation method and application thereof. The anticoagulant fiber membrane comprises a polyvinylidene fluoride membrane and a metal organic framework material with a carboxyl group, and the metal organic framework material with the carboxyl group is uniformly dispersed in the polyvinylidene fluoride membrane. The metal organic framework material in the anticoagulant fiber membrane can stably exist in a polyvinylidene fluoride membrane matrix. In addition, the anticoagulant fiber membrane has a good anticoagulant effect, and the result of the embodiment shows that the prothrombin time of the activated part of the anticoagulant fiber membrane is 42-60 seconds, and the anticoagulant effect is better. The anticoagulant fiber membrane has better hydrophilic properties, and the result of the embodiment shows that the contact angle between the anticoagulant fiber membrane and water is 50-80 degrees.

Description

technical field [0001] The invention relates to the field of functional polymer materials, in particular to an anticoagulant fiber membrane and its preparation method and application. Background technique [0002] Polyvinylidene fluoride membrane (PVDF for short) is an engineering plastic. Because of its good physical and chemical stability, it is often used as a functional polymer material with excellent performance to prepare flat membranes or hollow fiber membranes, which are used in blood purification and other fields. However, the polyvinylidene fluoride membrane does not have anticoagulant properties, and it is necessary to modify the polyvinylidene fluoride membrane to improve the application of the membrane in blood purification. [0003] At present, the commonly used modification method is the blending method. For example, Rahimpour et al. synthesized polyamino-imide by polycondensation method to blend the modified membrane material, so that the modified membrane ha...

Claims

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Application Information

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IPC IPC(8): D04H3/007D01F6/48D01F1/10
CPCD01F1/10D01F6/48D04H3/007D10B2321/042D10B2509/00
Inventor 聂胜强覃慧王壹罗军严伟成刚许晓璐张春梅曾嘉洲
Owner GUIYANG UNIV
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