Sulfonated polyether ether ketone-amino acid modified graphene oxide hybrid membrane and its preparation and application
A technology for sulfonating polyether ether ketone and amino acid is applied in the field of membrane separation, which can solve the problems of gas separation that have not been reported in literature, and achieve the effects of excellent gas separation performance, improved strength, and simple and controllable preparation process.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0025] Prepare a sulfonated polyether ether ketone-amino acid modified graphene oxide hybrid film, the thickness of the film is 60 microns, the mass ratio of sulfonated polyether ether ketone to amino acid modified graphene oxide is 0.02:0.98, and the sulfonated The degree of sulfonation of PEEK is 69%; the preparation method of the hybrid membrane comprises the following steps:
[0026] Step 1. Use the Hummer method to prepare graphene oxide. The flask is dry and anhydrous, put in a magnet, add 115mL of 98% concentrated sulfuric acid, put the flask in an ice bath and stir vigorously, add 5g of graphite flakes and 2.5g of nitric acid during the stirring process Sodium: Stir vigorously, slowly add 15g of potassium permanganate mixture A in batches, during the process of adding potassium permanganate, the system temperature does not exceed 20°C, and the mixture A is continuously stirred at 274K for 2h. Move mixture A to a constant temperature water bath, and keep stirring for 30...
Embodiment 2
[0031] Prepare a sulfonated polyether ether ketone-amino acid modified graphene oxide hybrid membrane, the thickness of the membrane is 70 microns, the mass ratio of sulfonated polyether ether ketone to amino acid modified graphene oxide is 0.96:0.04, and the sulfonated The degree of sulfonation of PEEK is 69%; the difference between the preparation method of this hybrid membrane and the preparation method of Example 1 is that the amino acid modified graphene oxide weighed in step 3 is 0.024g, and finally A homogeneous sulfonated polyether ether ketone-amino acid modified graphene oxide hybrid membrane with a thickness of 70 μm. figure 2 SEM sectional view of the sulfonated polyether ether ketone-amino acid modified graphene oxide hybrid membrane prepared in Example 2.
[0032] The hybrid membrane was subjected to pure CO at room temperature and 1 bar. 2 Penetration Testing, CO 2 The permeability coefficients are 2071barrer (1barrer=10 -10 cm 3 (STP)cm / (cm 2 s cmHg)), CO...
Embodiment 3
[0034] Prepare a sulfonated polyether ether ketone-amino acid modified graphene oxide hybrid membrane, the thickness of the membrane is 70 microns, the mass ratio of sulfonated polyether ether ketone to amino acid modified graphene oxide is 0.96:0.06, and the sulfonated The degree of sulfonation of polyetheretherketone is 69%; the difference between the preparation method of the hybrid membrane and the preparation method of Example 1 is that the amino acid-modified graphene oxide weighed in step 3 is 0.036g, and finally A homogeneous sulfonated polyether ether ketone-amino acid modified graphene oxide hybrid membrane with a thickness of 70 μm. image 3 SEM sectional view of the sulfonated polyether ether ketone-amino acid modified graphene oxide hybrid membrane prepared in Example 3.
[0035] The hybrid membrane was subjected to pure CO at room temperature and 1 bar. 2 Penetration Testing, CO 2 The permeability coefficients are 1857barrer (1barrer=10 -10 cm 3 (STP)cm / (cm ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| Degree of sulfonation | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More