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Title: Molecular Structure of Aromatic Reverse Osmosis Polyamide Barrier Layers

Abstract

The molecular structures of polyamide barrier layers in reverse osmosis membranes, made by interfacial polymerization of m-phenylenediamine and trimesoyl chloride under different reaction and post-treatment conditions, were characterized by grazing incidence wide-angle X-ray scattering (GIWAXS). Thus, the molecular backbone packing is consistent with two different aromatic molecular packing motifs (parallel and perpendicular) with preferential surface-induced orientation. The results imply that the perpendicular, T-shaped, packing motif (5 Å spacing) might be associated with optimal membrane permeance, compared with the parallel packings (3.5–4.0 Å spacings).

Authors:
ORCiD logo [1];  [1];  [2];  [3];  [4];  [4]; ORCiD logo [5]; ORCiD logo [1]; ORCiD logo [4]
  1. Stony Brook Univ., Stony Brook, NY (United States). Dept. of Chemistry
  2. Stony Brook Univ., Stony Brook, NY (United States). Dept. of Chemistry; Beijing Univ. of Chemical Technology, Beijing (China)
  3. Stony Brook Univ., Stony Brook, NY (United States). Dept. of Chemistry; Autonomous Univ. of San Luis Potosí, San Luis Potosí (Mexico)
  4. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  5. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1502806
Report Number(s):
BNL-211434-2019-JAAM
Journal ID: ISSN 2161-1653
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
ACS Macro Letters
Additional Journal Information:
Journal Volume: 8; Journal ID: ISSN 2161-1653
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Fu, Qinyi, Verma, Nisha, Ma, Hongyang, Medellin-Rodriguez, Francisco J., Li, Ruipeng, Fukuto, Masafumi, Stafford, Christopher M., Hsiao, Benjamin S., and Ocko, Benjamin M. Molecular Structure of Aromatic Reverse Osmosis Polyamide Barrier Layers. United States: N. p., 2019. Web. doi:10.1021/acsmacrolett.9b00077.
Fu, Qinyi, Verma, Nisha, Ma, Hongyang, Medellin-Rodriguez, Francisco J., Li, Ruipeng, Fukuto, Masafumi, Stafford, Christopher M., Hsiao, Benjamin S., & Ocko, Benjamin M. Molecular Structure of Aromatic Reverse Osmosis Polyamide Barrier Layers. United States. doi:10.1021/acsmacrolett.9b00077.
Fu, Qinyi, Verma, Nisha, Ma, Hongyang, Medellin-Rodriguez, Francisco J., Li, Ruipeng, Fukuto, Masafumi, Stafford, Christopher M., Hsiao, Benjamin S., and Ocko, Benjamin M. Thu . "Molecular Structure of Aromatic Reverse Osmosis Polyamide Barrier Layers". United States. doi:10.1021/acsmacrolett.9b00077.
@article{osti_1502806,
title = {Molecular Structure of Aromatic Reverse Osmosis Polyamide Barrier Layers},
author = {Fu, Qinyi and Verma, Nisha and Ma, Hongyang and Medellin-Rodriguez, Francisco J. and Li, Ruipeng and Fukuto, Masafumi and Stafford, Christopher M. and Hsiao, Benjamin S. and Ocko, Benjamin M.},
abstractNote = {The molecular structures of polyamide barrier layers in reverse osmosis membranes, made by interfacial polymerization of m-phenylenediamine and trimesoyl chloride under different reaction and post-treatment conditions, were characterized by grazing incidence wide-angle X-ray scattering (GIWAXS). Thus, the molecular backbone packing is consistent with two different aromatic molecular packing motifs (parallel and perpendicular) with preferential surface-induced orientation. The results imply that the perpendicular, T-shaped, packing motif (5 Å spacing) might be associated with optimal membrane permeance, compared with the parallel packings (3.5–4.0 Å spacings).},
doi = {10.1021/acsmacrolett.9b00077},
journal = {ACS Macro Letters},
number = ,
volume = 8,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
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This content will become publicly available on March 14, 2020
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