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Nanofiber molecularly imprinted membrane with high selectivity for putrescine and preparation method thereof

A molecularly imprinted membrane and nanofiber technology, applied in the field of functional polymer materials, can solve the problems of low sensitivity and response rate, difficulty in obtaining accessibility and permeability, etc., and achieve simple preparation process, good selective adsorption capacity, no Effects of Poison and Potential Biological Traits

Inactive Publication Date: 2019-04-16
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most imprinted materials synthesized by molecular imprinting techniques exhibit low sensitivity and response rate due to the difficulty in obtaining accessibility and permeability

Method used

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  • Nanofiber molecularly imprinted membrane with high selectivity for putrescine and preparation method thereof
  • Nanofiber molecularly imprinted membrane with high selectivity for putrescine and preparation method thereof
  • Nanofiber molecularly imprinted membrane with high selectivity for putrescine and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Dissolve 3 g of polyvinyl alcohol (PVA) in 26.955 mL of deionized water at 90 °C, then add 0.045 mg of 1,4-butanediol (BDO) template at 70 °C, stir to dissolve, and obtain spinning liquid;

[0030] (2) Draw 5 mL of the spinning solution obtained in (1) with a 20 mL syringe, and put it on a 21 # Then put the syringe with the spinning solution in the electrospinning machine for spinning, the spinning conditions are: positive voltage: 15Kv; spinning distance: 15 cm; drum speed: 600 r / min; Filament temperature: 20-27 ℃, spinning humidity: 50-68% and spinning for 2 h to prepare nanofiber membrane material;

[0031] (3) Remove the nanofiber membrane obtained in (2), cut it into 3 mm×3 mm fiber blocks with a blade, and then dry them in an oven at 60°C;

[0032] (4) Add 10 mL of methanol to the dried fiber block for standing elution, change the eluent once, the first time for 6 hours, and then soak for 2 hours, finally take it out and let it dry at room temperature, then ...

Embodiment 2

[0046] (1) Dissolve 3 g of polyvinyl alcohol (PVA) in 26.925 mL of deionized water at 90 °C, then add 0.075 mg of 1,4-butanediol (BDO) template at 70 °C, stir to dissolve, and obtain spinning liquid;

[0047] (2) Draw 5 mL of the spinning solution obtained in (1) with a 20 mL syringe, and put it on a 21 # Then put the syringe with the spinning solution in the electrospinning machine for spinning. The spinning conditions are: positive voltage: 15Kv; spinning distance: 15 cm; drum speed: 600 r / min; Filament temperature: 20-27 ℃, spinning humidity: 50-68% and spinning for 2 h to prepare nanofiber membrane material;

[0048] (3) Remove the nanofiber membrane obtained in (2), cut it into 3 mm×3 mm fiber blocks with a blade, and then dry them in an oven at 60°C;

[0049] (4) Add 10 mL of methanol to the dried fiber block for static elution, change the eluent once for 6 hours, then soak for 2 hours, finally take it out and let it evaporate and dry at room temperature, then add 315 ...

Embodiment 3

[0052] (1) Dissolve 3 g of polyvinyl alcohol (PVA) in 26.925 mL of deionized water at 90 °C, then add 0.075 mg of 1,4-butanediol (BDO) template at 70 °C, stir to dissolve, and obtain spinning liquid;

[0053] (2) Draw 5 mL of the spinning solution obtained in (1) with a 20 mL syringe, and put it on a 21 # Then put the syringe with the spinning solution in the electrospinning machine for spinning. The spinning conditions are: positive voltage: 15Kv; spinning distance: 15 cm; drum speed: 600 r / min; Filament temperature: 20-27 ℃, spinning humidity: 50-68% and spinning for 2 h to prepare nanofiber membrane material;

[0054] (3) Remove the nanofiber membrane obtained in (2), cut it into 3 mm×3 mm fiber blocks with a blade, and then dry them in an oven at 60°C;

[0055] (4) Add 10 mL of methanol to the dried fiber block for standing elution, change the eluent once for 6 hours, then soak for 2 hours, take it out and let it dry at room temperature, then add 290 μL dropwise 0.984 m...

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Abstract

The invention discloses a nanofiber molecularly imprinted membrane with high selectivity for putrescine and a preparation method thereof. The preparation method comprises the steps that vinol is stirred and dissolved in deionized water at the temperature of 85-95 DEG C, then 1, 4-butanediol is added at the temperature of 65-75 DEG C, after stirring, a spinning solution is obtained and then put inan injector with a 12-21# needle head with the diameter of 0.51-0.60 mm, the injector is placed in an electrostatic spinning machine, and a nanofiber membrane material is prepared through spinning; methyl alcohol is adopted for elution, and then a ninhydrin solution is dropwise added to obtain the nanofiber molecularly imprinted membrane. The prepared nanofiber molecularly imprinted membrane material is a nanometer thin membrane and has good capacity of adsorbing putrescine and a certain regeneration using property. A raw material is a quite safe macromolecule organic matter material, has theadvantages that the raw material is non-toxic and has no side effects and good biocompatibility, and is widely applied to the field of biomedicine.

Description

technical field [0001] The invention designs a nanofibrous molecular imprinted membrane with high selectivity to putrescine, which belongs to the field of functional polymer materials. Background technique [0002] Putrescine is a malodorous toxic diamine produced from ornithine. Putrescine is ubiquitous in food, especially in fermented food (such as cheese, beer, wine, etc.), meat products and aquatic products. The amount of putrescine in food is considered an indicator of freshness. Putrescine has received extensive attention and research in the fields of agriculture, food safety testing, tumor and animal husbandry. Putrescine's potential to enhance human antibody levels and better nutrient absorption and utilization, reduced fruit drop rate and improved fruit quality, and detection of cancerous tissue have been well documented. However, excessive putrescine can also cause diseases such as hypotension, tetanus, and quadriplegia. It can also produce carcinogens by reacti...

Claims

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Application Information

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IPC IPC(8): B01J20/28B01J20/26B01J20/30B82Y40/00B01D15/08D01F6/50D01F1/10
CPCB01D15/08B01D2323/39B01D2323/46B01J20/268B01J20/28038B82Y40/00D01F1/10D01F6/50
Inventor 英晓光康安顺朱肖梅
Owner FUZHOU UNIVERSITY
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