http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112452168-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-39 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-027 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 |
| filingDate | 2020-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112452168-B |
| titleOfInvention | Polyimide nano-fiber composite membrane, preparation method and application thereof in organic solvent nanofiltration process |
| abstract | The invention relates to a polyimide nano-fiber composite membrane, a preparation method and application thereof in an organic solvent nanofiltration process, belonging to the technical field of separation membranes. The invention provides an effective manufacturing technology for producing a nanofiber-based membrane based on insoluble polyimide, and provides a method for carrying out one-step post-treatment on a PI nanofiber-based membrane through hot pressing. A hydrophilic interlayer having a high positive charge density is prepared to facilitate formation of a skin layer by interfacial polymerization. The PIP-PEI-TFNC membrane provided by the invention shows better polar solvent permeability and dye retention rate, shows excellent stability for 48 hours in aprotic solvents (such as DMSO and DMF), and highlights the potential application of organic solvent recovery in the pharmaceutical and food industries. |
| priorityDate | 2020-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 69.