| Study on Remote Grafting of Quaternary Ammonium Cation SEBS-based Anion Exchange Membranes |
| Authors： LI Jing, LI Conghui, WANG Fanghui |
| Units： 1. College of Science and Technology, Beijing Open University，Beijing，100081，China;2. College of Chemistry, Beijing University of Chemical Technology, Beijing，100029, China； |
| KeyWords： SEBS; Friedel-Crafts acylation; remote grafting; OH-conductivity; alkali resistance |
| ClassificationCode：O632.1，TK91 |
| year,volume(issue):pagination： 2023,43(2):95-103 |
|
Abstract： |
| Bromohexylated SEBS polymer (SEBS-C6-Br) with a purity of 95% was obtained on hydrogenated styrene-butadiene block copolymer (SEBS) by trimethylamine acylation and carbonyl reduction. The SEBS-C6-TAM membrane was prepared by quaternization reaction with trimethylamine. The structure and properties of polymers and membranes were characterized. The results show that SEBS-C6-TAM can reach an OH-conductivity of 110.4 mS/cm at 80 °C, and after soaking in 4 M NaOH solution for 1800 h, the OH-conductivity is only degraded by 14.72%. The phenomenon of gelation was reduced during the preparation of bromohexylated SEBS, which provided another effective way for SEBS polymer modification. |
|
Funds： |
| 科技部重点研发计划(2019YFA0210300)，国家自然科学基金（21975017，51961145107） |
|
AuthorIntro： |
| 李京(1964.11-)，女，北京人，硕士，副教授，1987年7月起在北京开放大学工作，研究方向为化学类，lij@bjou.edu.cn |
|
Reference： |
|
[1] RAN J, WU L, HE Y, et al. Ion exchange membranes: New developments and applications [J]. Journal of Membrane Science, 2017, 522: 267-91. [2] DEKEL D R, WILLDORF S, ASH U, et al. The critical relation between chemical stability of cations and water in anion exchange membrane fuel cells environment [J]. Journal of Power Sources, 2018, 375: 351-60. [3] WANG C, MO B, HE Z, et al. Crosslinked norbornene copolymer anion exchange membrane for fuel cells [J]. Journal of Membrane Science, 2018, 556: 118-25. [4] ZHU L, YU X, HICKNER M A. Exploring backbone-cation alkyl spacers for multi-cation side chain anion exchange membranes [J]. Journal of Power Sources, 2018, 375: 433-41. [5] CHEN N, LU C, LI Y, et al. Robust poly(aryl piperidinium)/N-spirocyclic poly(2,6-dimethyl-1,4-phenyl) for hydroxide-exchange membranes [J]. Journal of Membrane Science, 2019, 572: 246-54. [6] ZIV N, DEKEL D R. A practical method for measuring the true hydroxide conductivity of anion exchange membranes [J]. Electrochemistry Communications, 2018, 88: 109-13. [7] MOHANTY A D, TIGNOR S E, KRAUSE J A, et al. Systematic Alkaline Stability Study of Polymer Backbones for Anion Exchange Membrane Applications [J]. Macromolecules, 2016, 49(9): 3361-72. [8] JEON J Y, PARK S, HAN J, et al. Synthesis of Aromatic Anion Exchange Membranes by Friedel–Crafts Bromoalkylation and Cross-Linking of Polystyrene Block Copolymers [J]. Macromolecules, 2019, 52(5): 2139-47. [9] LI Z, LI C, LONG C, et al. Elastic and durable multi‐cation‐crosslinked anion exchange membrane based on poly(styrene‐b‐(ethylene‐co‐butylene)‐b‐styrene) [J]. Journal of Polymer Science, 2020, 58(16): 2181-96. [10] AL MUNSUR A Z, HOSSAIN I, NAM S Y, et al. Hydrophobic-hydrophilic comb-type quaternary ammonium-functionalized SEBS copolymers for high performance anion exchange membranes [J]. Journal of Membrane Science, 2020, 599: 117829. [11] AL MUNSUR A Z, HOSSAIN I, NAM S Y, et al. Quaternary ammonium-functionalized hexyl bis(quaternary ammonium)-mediated partially crosslinked SEBSs as highly conductive and stable anion exchange membranes [J]. International Journal of Hydrogen Energy, 2020, 45(31): 15658-71. [12] XIAO Y, ZHANG M, DONG D, et al. Preparation of Branch Polyethyleneimine (BPEI) Crosslinked Anion Exchange Membrane Based on Poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) [J]. Macromolecular Materials and Engineering, 2021, 306(3): 2000693. [13] SU X, GAO L, HU L, et al. Novel piperidinium functionalized anionic membrane for alkaline polymer electrolysis with excellent electrochemical properties [J]. Journal of Membrane Science, 2019, 581: 283-92. [14] HAO J, GAO X, JIANG Y, et al. Crosslinked high-performance anion exchange membranes based on poly(styrene-b-(ethylene-co-butylene)-b-styrene) [J]. Journal of Membrane Science, 2018, 551: 66-75. [15] AL MUNSUR A Z, LEE J, CHAE J E, et al. Hexyl quaternary ammonium- and fluorobenzoyl-grafted SEBS as hydrophilic–hydrophobic comb-type anion exchange membranes [J]. Journal of Membrane Science, 2022, 643: 120029 [16] SUN L, GUO J, ZHOU J, et al. Novel nanostructured high-performance anion exchange ionomers for anion exchange membrane fuel cells [J]. Journal of Power Sources, 2012, 202: 70-7. [17] WANG L, YOU R, LING Y, et al. Covalent cross-linked anion exchange membrane based on poly(biphenyl piperidine) and poly(styrene-b-(ethylene-co-butylene)-b-styrene): preparation and properties [J]. Polymer-Plastics Technology and Materials, 2021, 60(11): 1233-46. [18] WANG F, LI C, SANG J, et al. Synthesis and characterization of a long side-chain double-cation crosslinked anion-exchange membrane based on poly(styrene-b-(ethylene-co-butylene)-b-styrene) [J]. International Journal of Hydrogen Energy, 2021, 46(73): 36301-13. [19] SANG J, YANG L, LI Z, et al. Comb-shaped SEBS-based anion exchange membranes with obvious microphase separation morphology [J]. Electrochimica Acta, 2021.402: 139500 [20] WANG F, LI C, SANG J, et al.,Poly(terphenylene) and Bromohexylated Polystyrene-b-poly(ethylene-co-butene)-b-polystyrene Cross-Linked Anion Exchange Membrane with Excellent Comprehensive Performance, Energy & Fuels,2022, https://doi.org/10.1021/acs.energyfuels.2c01670 [21] MOHANTY A D, RYU C Y, KIM Y S, et al. Stable Elastomeric Anion Exchange Membranes Based on Quaternary Ammonium-Tethered Polystyrene-b-poly(ethylene-co-butylene)-b-polystyrene Triblock Copolymers [J]. Macromolecules, 2015, 48(19): 7085-95. [22] WANG F H, CUI Y H, SANG J, Zhang H F, ZHU H,Cross-linked of poly(biphenyl pyridine) and poly(styrene-b-(ethylene-co-butylene)-b-styrene) grafted with double cations for anion exchange membrane，Electrochimica Acta,2022, 405, 139770 |
|
Service： |
| 【Download】【Collect】 |
《膜科学与技术》编辑部 Address: Bluestar building, 19 east beisanhuan road, chaoyang district, Beijing; 100029 Postal code; Telephone：010-80492417/010-80485372; Fax：010-80485372 ; Email：mkxyjs@163.com
京公网安备11011302000819号