Investigation of fine-structure of polyamide thin-film composite membrane under swelling effect by positron annihilation lifetime spectroscopy and molecular dynamics simulation

Huang Y.-H.Chao W.-C.Hung W.-S.An Q.-F.Chang K.-S.Huang S.-H.Tung K.-L.Lee K.-R.Lai J.-Y.2019-05-242019-05-24201203767388https://scholars.lib.ntu.edu.tw/handle/123456789/410445Positron annihilation lifetime spectroscopy (PALS) and molecular dynamics (MD) simulation analyses were adopted for an in-depth understanding at the molecular scale of the variation in the fine-structure of polyamide active layers of thin-film composite (TFC) membranes in the dry or the wet condition. The interfacial polymerization reaction between 1,3-diaminopropane (DAPE) and succinyl chloride (SCC) or between DAPE and trans-3,6-endomethylene-1,2,3,6-tetrahydrophthaloyl chloride (tNBDC) on the surface of a modified polyacrylonitrile (mPAN) membrane was carried out to fabricate DAPE-SCC/mPAN or DAPE-tNBDC/mPAN TFC membranes. PALS and MD simulation experimental results were highly consistent with each other. ? 2012 Elsevier B.V.Interfacial polymerizationMolecular dynamics (MD) simulationPositron annihilation lifetime spectroscopy (PALS)Swelling effectTFC membraneInvestigation of fine-structure of polyamide thin-film composite membrane under swelling effect by positron annihilation lifetime spectroscopy and molecular dynamics simulationjournal article10.1016/j.memsci.2012.06.0362-s2.0-84864810965https://www.scopus.com/inward/record.uri?eid=2-s2.0-84864810965&doi=10.1016%2fj.memsci.2012.06.036&partnerID=40&md5=7b00e647fff2f6647d0f19ef5c092a07