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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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the specific surface area of ​​the materials prepared by the form

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
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Example Embodiment

[0019] Example 1:

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

[0021] 2. Electrospinning: pour the prepared solution into the glass spinneret, and start applying a 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 kind of Na is obtained. - Polyvinyl alcohol / sodium carboxymethylcellulose nanofibers with 10% CMC content.

[0022] see attached figure 1 , which is the SEM photo of the PVA / Na-CMC fiber with a Na-CMC content of 10% provided in this example;

[0023] According to the ...

Example Embodiment

[0026] Example 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 0.2 g of Na-CMC into a dry Erlenmeyer flask, add 9.8 mL of deionized water, and stir at 70 °C for 4 h. ③ Add the prepared Na-CMC solution to the prepared PVA solution, stir at 70°C for 4 hours, and prepare a uniform PVA / Na-CMC blend solution as the spinning solution.

[0028] 2. Electrospinning: pour the prepared solution into the glass spinneret, and start applying a 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 kind of Na is obtained. - Polyvinyl alcohol / sodium carboxymethyl cellulose nanofibers with 20% CMC content.

[0029] pH sensitivity test: weigh 15 mg of the obtained polyvinyl alcohol / sodium carboxymethyl cellulose nanofibers, place first in HCl (pH=1.2) for 2h, then place in...

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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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