Journal
MACROMOLECULES
Volume 46, Issue 19, Pages 7797-7804Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ma400889t
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Funding
- National Research Foundation, Ministry of Science and Technology of Korea [2008-N-FC12-J-01-2-100, 2012M3A7B4049745]
- US National Science Foundation [CHE 1057797, DMR 0844933]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [W-31-109-Eng-38]
- E.I. DuPont de Nemours Co.
- U.S. National Science Foundation [DMR-9304725]
- State of Illinois through the Department of Commerce
- Board of Higher Education [IBHE HECA NWU 96]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1057797] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0844933] Funding Source: National Science Foundation
- Korea Evaluation Institute of Industrial Technology (KEIT) [2008-N-FC12-J-01-2-100] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Korea Institute of Industrial Technology(KITECH) [2008-N-FC12-J-01] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2012M3A7B4049745] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Ordered morphologies in disulfonated poly(arylene sulfide sulfone nitrile) (SPSN) copolymers were generated via thermal annealing followed by multiblock copolymer synthesis. While SPSN random copolymers (R-SPSN) showed featureless morphologies, the SPSN multiblock copolymers (B-SPSN) exhibited cocontinuous lamellar morphologies with a center-to-center interdomain size of up to 40 nm. In spite of the well-ordered, interconnected hydrophilic domains, the water self-diffusion coefficient (e.g., D = (0.7-2.0) x 10(-10) m(2) s(-1)) and proton conductivity (e.g., sigma = 0.16-0.20 S cm(-1) in deionized water at 30 degrees C) through B-SPSN were lower than those of the corresponding R-SPSN (e.g., D = (3.5-3.9) x 10(-10) m(2) s(-1) and sigma = 0.21 S cm(-1)) due to the relatively lower water uptake of the B-SPSN after thermal annealing. The reduced water uptake of B-SPSN was beneficial to reduction of peroxide degradation rate. Thermal annealing produced significant gains in morphological ordering and finer control over desired membrane properties for proton conduction applications.
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