http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108159892-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-442 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-125 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-44 |
| filingDate | 2018-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108159892-B |
| titleOfInvention | Preparation method of nanofiber-based nanofiltration composite membrane containing gelatin transition layer |
| abstract | The invention relates to a preparation method of a nanofiber-based nanofiltration composite membrane containing a gelatin transition layer, which is characterized by comprising the following steps of: carrying out electrostatic spinning on the polymer solution to obtain a nanofiber non-woven fabric, and carrying out cold pressing treatment to obtain a nanofiber porous supporting layer; performing electrostatic spinning on the obtained nanofiber porous supporting layer by using a gelatin solution to obtain a double-layer nanofiber composite membrane; pouring oil phase monomer solution for crosslinking; pouring water phase monomer solution for interfacial polymerization reaction; and (4) carrying out heat treatment to obtain the nanofiber-based nanofiltration composite membrane containing the gelatin transition layer. The invention takes the biomaterial gelatin which is low in price, wide in source and rich in functional groups as the intermediate transition layer, thereby adsorbing oil phase monomers, overcoming the problem of the skin layer defect caused by rapid volatilization of the oil phase inherent in reverse interfacial polymerization, and optimizing the thickness, uniformity and density of the functional barrier layer by controlling the transition layer and the polymerization parameters of the reverse interface, thereby strengthening the nanofiltration performance of the composite membrane. |
| priorityDate | 2018-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 100.