In this section
@article{Foglia:2017:10.1002/adfm.201701738,
author = {Foglia, F and Karan, S and Nania, M and Jiang, Z and Porter, AE and Barker, R and Livingston, AG and Cabral, JT},
doi = {10.1002/adfm.201701738},
journal = {ADVANCED FUNCTIONAL MATERIALS},
title = {Neutron Reflectivity and Performance of Polyamide Nanofilms for Water Desalination},
url = {http://dx.doi.org/10.1002/adfm.201701738},
volume = {27},
year = {2017}
}
TY - JOUR
AB - The structure and hydration of polyamide (PA) membranes are investigated with a combination of neutron and X-ray reflectivity, and their performance is benchmarked in reverse osmosis water desalination. PA membranes are synthesized by the interfacial polymerization of m-phenylenediamine (MPD) and trimesoyl chloride (TMC), varying systematically reaction time, concentration, and stoichiometry, to yield large-area exceptionally planar films of ≈10 nm thickness. Reflectivity is employed to precisely determine membrane thickness and roughness, as well as the (TMC/MPD) concentration profile, and response to hydration in the vapor phase. PA film thickness is found to increase linearly with reaction time, albeit with a nonzero intercept, and the composition cross-sectional profile is found to be uniform, at the conditions investigated. Vapor hydration with H2O and D2O from 0 to 100% relative humidity results in considerable swelling (up to 20%), but also yields uniform cross-sectional profiles. The resulting film thickness is found to be predominantly set by the MPD concentration, while TMC regulates water uptake. A favorable correlation is found between higher swelling and water uptake with permeance. The data provide quantitative insight into the film formation mechanisms and correlate reaction conditions, cross-sectional nanostructure, and performance of the PA active layer in RO membranes for desalination.
AU - Foglia,F
AU - Karan,S
AU - Nania,M
AU - Jiang,Z
AU - Porter,AE
AU - Barker,R
AU - Livingston,AG
AU - Cabral,JT
DO - 10.1002/adfm.201701738
PY - 2017///
SN - 1616-301X
TI - Neutron Reflectivity and Performance of Polyamide Nanofilms for Water Desalination
T2 - ADVANCED FUNCTIONAL MATERIALS
UR - http://dx.doi.org/10.1002/adfm.201701738
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000412324200005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/52217
VL - 27
ER -