polyvinyl alcohol (PVA)/sodium carboxy methylated cellulose (Na-CMC) nanofiber, preparation method and application

A technology of sodium carboxymethyl cellulose and polyvinyl alcohol, which is applied in the fields of cellulose/protein conjugated rayon, fiber treatment, spinning solution preparation, etc., can solve the problems of small specific surface area of ​​materials and limited application range, etc. Achieve the effects of simple preparation process, good biocompatibility and good permeability

Inactive Publication Date: 2013-02-27
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area of ​​the materials prepared by the former two is small, and the application range is limited to a certain extent.

Method used

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  • polyvinyl alcohol (PVA)/sodium carboxy methylated cellulose (Na-CMC) nanofiber, preparation method and application
  • polyvinyl alcohol (PVA)/sodium carboxy methylated cellulose (Na-CMC) nanofiber, preparation method and application
  • polyvinyl alcohol (PVA)/sodium carboxy methylated cellulose (Na-CMC) nanofiber, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Preparation of spinning solution: ① Weigh 0.9g of PVA into a dry Erlenmeyer flask, add 10.35mL of deionized water, and stir at 90°C for 2h. ②Weigh 0.1g Na-CMC into a dry Erlenmeyer flask, add 19.9mL deionized water, and stir at 70°C for 4h. ③Add the prepared Na-CMC solution into the prepared PVA solution, stir at 70°C for 4 hours, and prepare a uniform PVA / Na-CMC blend as the spinning solution.

[0021] 2. Electrospinning: Pour the configured solution into the glass spinneret, and start to apply voltage after the spinning solution flows out of the plastic nozzle. The spinning voltage is 8KV, and the receiving distance is 15cm. After electrospinning, a Na - Polyvinyl alcohol / sodium carboxymethylcellulose nanofibers with a CMC content of 10%.

[0022] See attached figure 1 , it is the SEM photo of the PVA / Na-CMC fiber that the Na-CMC content provided by the present embodiment is 10%;

[0023] According to the method and process conditions of steps 1 and 2, PVA / Na...

Embodiment 2

[0027] 1. Preparation of spinning solution: ① Weigh 0.8 g of PVA into a dry Erlenmeyer flask, add 9.2 mL of deionized water, and stir at 90°C for 2 hours. ② Weigh 0.2g Na-CMC into a dry Erlenmeyer flask, add 9.8mL deionized water, and stir at 70°C for 4h. ③Add the prepared Na-CMC solution into the prepared PVA solution, stir at 70°C for 4 hours, and prepare a uniform PVA / Na-CMC blend as the spinning solution.

[0028] 2. Electrospinning: Pour the configured solution into the glass spinneret, and start to apply voltage after the spinning solution flows out of the plastic nozzle. The spinning voltage is 8KV, and the receiving distance is 15cm. After electrospinning, a Na - Polyvinyl alcohol / sodium carboxymethylcellulose nanofibers with a CMC content of 20%.

[0029] pH sensitivity test: Weigh 15 mg of the prepared polyvinyl alcohol / sodium carboxymethylcellulose nanofibers, first place them in HCl (pH = 1.2) for 2 hours, and then place them in a buffer solution (PBS, pH = 7.4). ...

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PUM

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Abstract

The invention discloses a PVA / Na-CMC nanofiber, a preparation method and an application. The nanofiber comprises, by mass, 10%-40% of Na-CMC and the balance PVA, and can be applied to the biomedical field as a pH-sensitive material. The preparation method includes blending PVA and Na-CMC solutions and preparing the nanofiber through an electrostatic spinning technique. The prepared nanofiber is high in porosity, good in biocompatibility and pH-sensitive; the preparation is simple in process and easy to handle; and the application of the nanofiber in tissue engineering is wide.

Description

technical field [0001] The invention relates to a polymer nanofiber, a preparation method and its application, in particular to a polyvinyl alcohol / sodium carboxymethyl cellulose blend nanofiber and a preparation method thereof, which is a polymer nanofiber with pH sensitivity Material. Background technique [0002] Nanofibers refer to wire-like materials with a diameter of nanoscale and a large length. In a broad sense, it includes ultrafine fibers with a fiber diameter of nanometers, and also includes fibers modified by filling nanoparticles into ordinary fibers. The main methods for fabricating nanofibers include stretching, template synthesis, self-assembly, microphase separation, and electrospinning. Among them, the electrospinning method is widely used due to its advantages of simple operation, wide application range and high production efficiency. [0003] Environmentally sensitive materials are polymer materials that have pH responsiveness, temperature sensitivity,...

Claims

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Application Information

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IPC IPC(8): D01F8/10D01F8/02D01D1/02D01D5/00
Inventor 戴礼兴张小雪张豆豆王一帆孙君王建军
Owner SUZHOU UNIV
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