A kind of hydrolysis-resistant electrospun PVA/glycerol crosslinked nanofiber membrane and preparation method thereof
A nanofiber membrane, anti-hydrolysis technology, applied in fiber processing, filament/thread forming, textiles and papermaking, etc., can solve problems such as water swelling, electrospun membrane filtration effect, etc., to increase hydrolysis resistance, mechanical High performance and improved mechanical properties
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0025] A preparation method of an anti-hydrolysis electrospun PVA / glycerol crosslinked nanofiber membrane, comprising the steps:
[0026] The first step is to prepare the PVA aqueous solution: accurately weigh 1.0 g of PVA (molecular weight: 70,000, degree of alcoholysis 89%) and dissolve it in 9.0 g of deionized water, stir magnetically for 3 hours in a water bath at 80°C, and then in a water bath at 20°C Under the condition of magnetic stirring for 30 minutes, the stirring speed is 200r / min, and the uniform and transparent PVA aqueous solution with a mass fraction of 10% is prepared.
[0027] The second step is to add the crosslinking agent glycerin: accurately weigh 1.0 g of glycerin (analytical grade) and 9.0 g of deionized water, add it to the PVA aqueous solution described in the first step, and magnetically stir for 5 h under the condition of a water bath at 20 ° C. The magnetic stirring speed is 80r / min, and a uniform and transparent PVA / glycerol spinning solution with...
Embodiment 2
[0032] A preparation method of an anti-hydrolysis electrospun PVA / glycerol crosslinked nanofiber membrane, comprising the steps:
[0033] Step 1: Accurately weigh 1.5g of PVA (molecular weight 80,000, degree of alcoholysis 77%) and dissolve it in 8.5g of deionized water, stir magnetically for 4 hours in a water bath at 85°C, and stir magnetically for 30 minutes in a water bath at 25°C , the stirring speed is 100r / min, and the uniform transparent PVA aqueous solution with a mass fraction of 15% is prepared.
[0034] The second step is to add the crosslinking agent glycerin: accurately weigh 1.5g of glycerin (analytical grade) and 8.5g of deionized water, add it to the PVA aqueous solution described in the first step, and magnetically stir for 4 hours under the condition of 25°C water bath, The magnetic stirring speed is 100r / min, and a uniform transparent PVA / glycerol spinning solution with a total mass fraction of 15% is prepared.
[0035] Step 3: Prepare the prepared spinnin...
Embodiment 3
[0039] A preparation method of an anti-hydrolysis electrospun PVA / glycerol crosslinked nanofiber membrane, comprising the steps:
[0040] The first step is to prepare the PVA aqueous solution: accurately weigh 2g of PVA (molecular weight 74800, degree of alcoholysis 98%) and dissolve it in 8g of deionized water, stir magnetically for 4 hours in a water bath at 90°C, and stir magnetically in a water bath at 30°C For 30 minutes, the stirring speed was 300r / min, and a uniform transparent PVA aqueous solution with a mass fraction of 20% was prepared.
[0041] The second step is to add a cross-linking agent: accurately weigh 2g of glycerin (analytical grade) and 8g of deionized water, add it to the PVA aqueous solution described in the first step, and stir magnetically for 2 hours in a water bath at 30°C. The speed is 120r / min, and a uniform transparent PVA / glycerin spinning solution with a mass fraction of 20% is prepared.
[0042]The third step, electrospinning: the prepared spi...
PUM
| Property | Measurement | Unit |
|---|---|---|
| alcoholysis degree | aaaaa | aaaaa |
| quality score | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More