Sulfonated Poly(arylene sulfide sulfone nitrile) Multiblock Copolymers with Ordered Morphology for Proton Exchange Membranes
- Authors
- Shin, Dong Won; Lee, So Young; Lee, Chang Hyun; Lee, Kwan-Soo; Park, Chi Hoon; McGrath, James E.; Zhang, Mingqiang; Moore, Robert B.; Lingwood, Mark D.; Madsen, Louis A.; Kim, Young Taek; Hwang, Inchul; Lee, Young Moo
- Issue Date
- Oct-2013
- Publisher
- AMER CHEMICAL SOC
- Citation
- MACROMOLECULES, v.46, no.19, pp.7797 - 7804
- Indexed
- SCIE
SCOPUS
- Journal Title
- MACROMOLECULES
- Volume
- 46
- Number
- 19
- Start Page
- 7797
- End Page
- 7804
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/133998
- DOI
- 10.1021/ma400889t
- ISSN
- 0024-9297
- Abstract
- 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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