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1

Mardle, Peter, Zhengming Jiang, Zhiqing Shi, and Steven Holdcroft. "(Invited) Anion Exchange Membrane and Ionomer Development for Electrochemical CO2 Reduction." ECS Meeting Abstracts MA2022-01, no. 39 (2022): 1767. http://dx.doi.org/10.1149/ma2022-01391767mtgabs.

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Recent developments have proven the economic potential of electrochemical reduction of CO2 to value added chemicals, where single cells are now capable of achieving high energetic efficiencies at industrially relevant current densities. 1 These advances are in no small part due to the increased ionic conductivity, hydroxide stability and commercial availability of anion exchange membranes (AEMs). However, there currently exists little understanding as to how these materials affect the efficiency of CO2 conversion devices because the research community is only now beginning to understand the va
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2

Eitzen, Jasper, Jake Mouallem, Scott Storbakken, Andrea Quintero, and Marc Secanell. "Experimental and Numerical Analysis of Alkaline Exchange Membrane Water Electrolyzers." ECS Meeting Abstracts MA2024-02, no. 45 (2024): 3168. https://doi.org/10.1149/ma2024-02453168mtgabs.

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The operation of fuel cells and electrolyzers in alkaline conditions allows for the use of: i) less expensive electrocatalyst, such as nickel alloys and silver, ii) cheaper metals for porous layers and bipolar plates due to the less corrosive environment at high pH, e.g., nickel and stainless steel compared to titanium in PEMWE; and, iii) seawater for electrolysis [1]. However, it is only in the past decade that remarkable strides in polymer synthesis and stabilization techniques have enabled the fabrication of AEMs and ionomers that are stable at high pH and above 80oC, and have ionic conduct
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3

Biancolli, Ana Laura Gonçalves, Binyu Chen, Alessandra Stacchini Menandro, Fabio Coral Fonseca, Elisabete Inacio Santiago, and Steven Holdcroft. "Anion-Exchange Membrane Water Electrolysis: Key Membrane Features for Enhanced Performance." ECS Meeting Abstracts MA2025-01, no. 47 (2025): 3153. https://doi.org/10.1149/ma2025-01473153mtgabs.

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Hydrogen production via water electrolysis powered by renewable energy presents a promising route to sustainable fuel generation. Traditional alkaline water electrolysis operates within a limited current density range of 0.2–0.4 A cm⁻² at 60–80 ℃, with cell voltages between 1.8–2.4 V, primarily constrained by high internal resistance1. Anion-exchange membrane water electrolyzers (AEMWE) offer an attractive alternative, combining the advantages of alkaline operation – such as compatibility with non-noble metal catalysts – with the enhanced performance of zero-gap cell configurations. Radiation-
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4

Liu, Jiafei, and Marc Secanell. "Exploring the Impact of Cathode Ionomer Content on Alkaline Exchange Membrane Fuel Cells (AEMFCs) Using Inkjet Printing Technique." ECS Meeting Abstracts MA2024-02, no. 44 (2024): 3019. https://doi.org/10.1149/ma2024-02443019mtgabs.

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Hydrogen proton exchange membrane fuel cells (PEMFCs) typically rely on expensive platinum group metals (PGMs) as catalysts. A promising strategy to eliminate the need for PGM catalysts is to operate the cell under alkaline conditions. Non-PGM based AEMFCs have achieved power densities exceeding 1 W/cm2, and various commercial electrolytes, such as Tokuyama A201/A901/AS-4, FumaTech Fumasep, Ionomr Aemion, and Versogen PiperION, have been developed and are available for researchers to explore and enhance AEMFC performance. Unfortunately, AEMFCs using commercial materials have not yet demonstrat
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5

Chuluunbandi, Khajidkhand, Simon Thiele, and Anna T. S. Freiberg. "Comparison of Different Ionomers for the Anode Catalyst Layer of Anion Exchange Membrane Water Electrolysis." ECS Meeting Abstracts MA2024-02, no. 45 (2024): 3148. https://doi.org/10.1149/ma2024-02453148mtgabs.

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In water electrolysis cells, optimizing the anode electrode where the oxygen evolution reaction takes place is crucial for high performance and durability. The ionomer is an essential part of the catalyst layer (CL). It provides ionic conductivity, enabling ions to move to the catalyst sites where the electrochemical reaction occurs. Additionally, ionomers contribute to tuning the hydrophobicity and hydrophilicity of the CL, which influences water availability at catalyst sites and gas removal. Moreover, ionomers ought to help to maintain optimal pH levels, an important factor for catalyst sta
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6

Britton, Benjamin, Andrew M. Baker, and Santiago Rojas-Carbonell. "(Invited) Mechanical Properties in the Design of Hydrocarbon Catalyst Layers for Electrolyzer, Fuel Cell, and Other Electrochemical Applications with Pemion® and Aemion®." ECS Meeting Abstracts MA2025-01, no. 7 (2025): 759. https://doi.org/10.1149/ma2025-017759mtgabs.

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Water electrolysis for the production of green hydrogen is a critical technology for the renewable energy transition, representing the most economic and scalable technology for multi-day energy and inter-regional energy storage, and in pure or in derivative forms is essential to the decarbonization of ammonia, steel, ‘heavy duty’ transportation such as commercial trucking, aviation, shipping, remote operations, the replacement of diesel generators, and other ‘difficult to abate’ sectors. Where practical, hydrogen fuel cells represent the most efficient use of hydrogen. Commercial electrochemic
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7

Nallayagari, Ashwini Reddy, Frédéric Murphy, Maria Luisa Di Vona, and Elena Baranova. "Investigation of Electrocatalyst and Ionomer Interaction in Anion Exchange Membrane Water Electrolysis." ECS Meeting Abstracts MA2023-02, no. 42 (2023): 2067. http://dx.doi.org/10.1149/ma2023-02422067mtgabs.

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Anion exchange membrane water electrolysis (AEMWE) is a type of electrolysis that involves the use of an anion exchange membrane (AEM) to separate the anode and cathode compartments. During the electrolysis process, water is split into hydrogen gas (H2) at the cathode and oxygen gas (O2) at the anode. AEMWE is an emerging technology that has the potential to play a significant role in the production of green hydrogen, which is a promising energy carrier for a variety of applications, including fuel cells and transportation. One of the benefits of AEMWE is that it can be used with a variety of
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8

Britton, Benjamin, Andrew M. Baker, and Santiago Rojas-Carbonell. "(Invited) Design Considerations for Hydrocarbon Catalyst Layers in Proton- and Alkaline Anion-Exchange Membrane Water Electrolysis." ECS Meeting Abstracts MA2025-01, no. 38 (2025): 1851. https://doi.org/10.1149/ma2025-01381851mtgabs.

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Water electrolysis for the production of green hydrogen is a critical technology for the renewable energy transition, representing the most economic and scalable technology for multi-day energy and inter-regional energy storage, and in pure or in derivative forms is essential to the decarbonization of ammonia, steel, ‘heavy duty’ transportation, and other ‘difficult to abate’ sectors. Commercial electrochemical systems overwhelmingly rely on perfluorosulfonic acids (PFSAs). With respect to electrodes, balancing high conductivity with mechanical properties when fully hydrated provides a key des
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9

Jansonius, Ryan, Marta Moreno, and Benjamin Britton. "High Performance AEM Water Electrolysis with Aemion® Membranes." ECS Meeting Abstracts MA2022-01, no. 39 (2022): 1723. http://dx.doi.org/10.1149/ma2022-01391723mtgabs.

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By 2030 up to 50% of energy is expected to be carried in the bonds of H2. Global electrolysis capacity must increase from the current 240 MW to an anticipated 300 GW in 2030 and 3500 GW in 2050 to enable this transition. Alkaline and PEM electrolyzers are commercially mature with the currently market share of new installations roughly an equal split between these technologies. However, each of these electrolyzers are associated with challenges – alkaline electrolyzers operate at low current density, and require high concentration electrolytes (30 wt% KOH) to conduct hydroxides through the poro
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10

Turtayeva, Zarina, Feina Xu, Régis Peignier, Alain Celzard, and Gael Maranzana. "Optimization of Ionomer Content in Membrane Electrode Assemblies and Its Impact on the Performance in Anion Exchange Membrane Fuel Cells." ECS Meeting Abstracts MA2022-02, no. 43 (2022): 1624. http://dx.doi.org/10.1149/ma2022-02431624mtgabs.

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Anion exchange membrane fuel cells (AEMFCs) have recently attracted significant attention as low-cost alternative fuel cells to traditional proton exchange membrane fuel cells due to the possible use of platinum-group metal-free electrocatalysts [1]. Over the past decade, new materials dedicated to the alkaline medium, such as anion exchange membranes (AEMs) and anion exchange ionomers (AEIs), have been developed and studied in AEMFCs [2, 3]. However, only a few AEMs and AEIs are commercially available, and there are not ready to use catalyst coated membranes (CCMs) and/or gas diffusion electr
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11

Koch, Susanne, Philipp A. Heizmann, Sophia K. Kilian, et al. "The effect of ionomer content in catalyst layers in anion-exchange membrane water electrolyzers prepared with reinforced membranes (Aemion+™)." Journal of Materials Chemistry A 9, no. 28 (2021): 15744–54. http://dx.doi.org/10.1039/d1ta01861b.

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12

Fell, Eric M., Benjamin Britton, Ian Kendrick, and Santiago Rojas-Carbonell. "High-Throughput Electrochemical Impedance Spectroscopy for Anion Exchange Membrane Water Electrolyzers." ECS Meeting Abstracts MA2025-01, no. 38 (2025): 1879. https://doi.org/10.1149/ma2025-01381879mtgabs.

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Anion exchange membrane water electrolyzers (AEMWE) have emerged as promising and potentially disruptive technologies for the production of hydrogen via electrolysis. AEMWE operate under alkaline conditions, enabling high hydrogen production rates per stack at high efficiencies without the need for scarce noble metals such as iridium in oxygen evolution catalysts. Consequently, AEMWE offer an opportunity for the optimization of both cost and performance, out-pacing incumbent technologies (proton exchange membrane/alkaline water electrolyzers) after further development. The stability and conduc
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13

Britton, Benjamin, and Marta Moreno. "(Invited) Aemion+® AEM Water Electrolysis with Excellent Iridium-Free Performance and Industrially Relevant Stability in Hot, Caustic Electrolyte." ECS Meeting Abstracts MA2023-01, no. 36 (2023): 2031. http://dx.doi.org/10.1149/ma2023-01362031mtgabs.

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Hydrogen has a unique ability to maximize the utility of and enable new business models for intermittent renewable deployment. It can be stored cost-effectively in geological storage, transported between regions to suit geographic needs and bridge Dunkelflautes. Global electrolysis capacity must increase from the current <2 GW to 850 GW in 2030 (IEA Net Zero 2050) and in excess of 3500 GW in 2050 to enable this transition. Both traditional Alkaline (AWE) and proton-exchange membrane electrolyzers (PEMWE) are mature technologies that are anticipated to split the overall market share. However
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14

Hagner, Luis, Lukas Metzler, Susanne Koch, et al. "AEM Water Electrolysis with Ni-Based Catalysts and Tailored Poly(arylene piperidinium) Materials for Improved Stability." ECS Meeting Abstracts MA2024-01, no. 40 (2024): 3097. http://dx.doi.org/10.1149/ma2024-01403097mtgabs.

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Anion-exchange membrane water electrolysis (AEMWE) is a promising low-temperature technology for hydrogen production. It leverages the advantages of the currently dominant technologies (alkaline water electrolysis and proton-exchange membrane water electrolysis) by using transition metal group based catalysts and a zero-gap configuration, enabling high efficiency. However, current AEMWE systems show a limited stability and efficiency. In this work, commercial and non-commercial polymers are used to fabricate catalyst-coated membranes with a production method oriented towards scalable productio
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15

Yang, Zezhou, Ryszard Wycisk, and Peter N. Pintauro. "(Invited) Bipolar Membranes with a 3D Junction of Interlocking Electrospun Fibers." ECS Meeting Abstracts MA2022-02, no. 44 (2022): 1661. http://dx.doi.org/10.1149/ma2022-02441661mtgabs.

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Bipolar membranes (BPMs), typically laminated layers of anion-exchange and cation-exchange polymers, have the unique capability of splitting water at a potential near 0.83 V. Such membranes are used in electrodialysis membrane separation processes. They also have applications in water electrolyzers, CO2 electrolysis cells, and self-humidifying fuel cells. We report here on recent developments regarding BPMs with a high interfacial area, 3D nanofiber junction. Membranes were prepared by first creating a bipolar junction layer, by the simultaneous electrospinning of anion-exchange and cation-exc
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16

Amirsalehi, Mahmoud, K. Hari Gopi, Pongsarun Satjaritanun, Marta Moreno, Benjamin Britton, and William Earl Mustain. "Evaluating the Impact of Cell Assembly and Operating Conditions on the Performance of Anion Exchange Membrane Electrolyzers." ECS Meeting Abstracts MA2024-01, no. 34 (2024): 1709. http://dx.doi.org/10.1149/ma2024-01341709mtgabs.

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The alkaline water electrolyzer (AWE) and proton exchange membrane water electrolyzer (PEMWE) are the two dominant commercial platforms to produce hydrogen through electrolysis. Recent efforts have focused on combining the benefits of the two technologies, leading to the creation of the anion exchange membrane water electrolyzer (AEMWE). AEMWEs operate under high pH conditions, like AWEs, enabling the use of cost-effective materials as cell components and non-noble electrocatalysts. AEMWEs also utilize the same high-performance zero-gap design PEMWEs and also have the ability to operate at hig
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17

Wei, Fei, Aslan Kosakian, Jiafei Liu, and Marc Secanell. "Water Transport Characterization of Anion and Proton Exchange Membranes." ECS Meeting Abstracts MA2022-02, no. 50 (2022): 2620. http://dx.doi.org/10.1149/ma2022-02502620mtgabs.

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Proton exchange membrane (PEM) and anion exchange membrane (AEM) fuel cells (FCs) are the two types of fuel cell devices that electrochemically convert the chemical energy of hydrogen into electricity and heat with water as the only by-product. Due to no requirement of precious and non-renewable platinum as the catalyst material, AEMFCs have attracted great attention in recent years [1,2]. However, water balance between anode and cathode in AEMFCs is more crucial than in PEMFCs, as water not only is produced in the anode, hindering hydrogen transport to the anode catalyst layer, but also funct
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18

Mar, Harrison, Peter Mardle, Ken Tsay, Wei Qu, Guangyu Wang, and Zhong Xie. "Reference-Electrode Configuration in CO2 Electrolysis (CO2E) and Anion-Exchange Membrane Water Electrolysis (AEMWE) Cells for Degradation and Stability Evaluation." ECS Meeting Abstracts MA2024-01, no. 37 (2024): 2207. http://dx.doi.org/10.1149/ma2024-01372207mtgabs.

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CO2 electrolysis (CO2E) and anion-exchange membrane water electrolysis (AEMWE) have both been identified as promising technologies for reducing emissions from the industrial and energy sectors in pursuit of achieving net-zero goals.1,2,3,4 Recent developments of electrocatalysts, membranes, and electrolyser cell design have resulted in rapid progress of CO2E and AEMWE, achieving high current densities and faradaic efficiencies at the laboratory scale.1,2 However, the long-term stability of these technologies requires improvement if they are to be deployed at commercially relevant scales.2,5 Un
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19

Witte, Jan, Patrick Trinke, Mareike Benecke, et al. "Unveiling the Impact of CCS Properties on Hydrogen Crossover and Cell Performance in AEM Water Electrolysis." ECS Meeting Abstracts MA2025-01, no. 38 (2025): 1955. https://doi.org/10.1149/ma2025-01381955mtgabs.

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Industrially applied water electrolysis technologies to produce green hydrogen for a sustainable and clean energy future are proton exchange membrane water electrolysis (PEMWE) and alkaline water electrolysis (AWE). To combine the advantages of PEMWE, such as compact cell design and low cell voltages at high production rates, with those of AWE, such as the use of non-noble catalyst materials, anion exchange membrane water electrolysis (AEMWE) is currently under rapid development. While Pt/C can be considered as state-of-the-art catalyst on the cathode, NiFe-based catalysts are predominantly em
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20

Baranton, Steve, Robin Hu, Shazam Williams, et al. "Catalysts and Electrode Development for AEM Water Electrolysis." ECS Meeting Abstracts MA2024-02, no. 42 (2024): 2819. https://doi.org/10.1149/ma2024-02422819mtgabs.

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Water electrolysis is a promising technology that can use renewable energies (solar and wind) to produce green hydrogen [1]. In particular, Anion Exchange Membrane Water Electrolysis (AEMWE) offers the combined advantages of the mature Alkaline Water Electrolysis technology and the high efficiency and high dynamic range of the Proton Exchange Membrane Water Electrolysis [2]. This combination of advantages allows the AEMWE technology to be operated with non-PGM electrodes [3], non-perfluorinated membrane with a high dynamic range favoring its use with intermittent renewable energy for the produ
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21

Henkensmeier, Dirk, Malikah Najibah, Corinna Harms, Jan Žitka, Jaromír Hnát, and Karel Bouzek. "Overview: State-of-the Art Commercial Membranes for Anion Exchange Membrane Water Electrolysis." Journal of Electrochemical Energy Conversion and Storage 18, no. 2 (2020). http://dx.doi.org/10.1115/1.4047963.

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Abstract One promising way to store and distribute large amounts of renewable energy is water electrolysis, coupled with transport of hydrogen in the gas grid and storage in tanks and caverns. The intermittent availability of renewal energy makes it difficult to integrate it with established alkaline water electrolysis technology. Proton exchange membrane (PEM) water electrolysis (PEMEC) is promising, but limited by the necessity to use expensive platinum and iridium catalysts. The expected solution is anion exchange membrane (AEM) water electrolysis, which combines the use of cheap and abunda
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22

Henkensmeier, Dirk, Najibah Malikah, Corinna Harms, Jan Žitka, Jaromír Hnát, and Karel Bouzek. "Overview: State-of-the art commercial membranes for anion exchange membrane water electrolysis." Journal of Electrochemical Energy Conversion and Storage 18 (August 24, 2020). https://doi.org/10.1115/1.4047963.

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Review Paper, published in Journal of Electrochemical Energy Conversion and Storage Link to fully edited paper (published open access): https://asmedigitalcollection.asme.org/electrochemical/article/18/2/024001/1085903 of-the-Art-Commercial-Membranes-for DOI: 10.1115/1.4047963 Funding: This project has received funding from NRF and the Fuel Cells and Hydrogen 2 Joint Undertaking under grant agreement No (875118). This Joint Undertaking receives support from the European Union’s Horizon 2020 research and innovation programme, Hydrogen Europe and Hydrogen Europe research.
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23

"Ionomr's Aemion+ membrane released for industrial electrolysis." Fuel Cells Bulletin 2021, no. 7 (2021): 11. http://dx.doi.org/10.1016/s1464-2859(21)00398-9.

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24

Cossar, Emily, Frédéric Murphy, Jaspreet Walia, Arnaud Weck, and Elena A. Baranova. "Role of Ionomers in Anion Exchange Membrane Water Electrolysis: Is Aemion the Answer for Nickel-Based Anodes?" ACS Applied Energy Materials, August 8, 2022. http://dx.doi.org/10.1021/acsaem.2c01604.

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25

Grimler, Henrik, Nikola Nikolić, Henrik Ekström, Carina Lagergren, Rakel Wreland Lindström, and Göran Lindbergh. "Water Diffusion, Drag and Absorption in an Anion-Exchange Membrane Fuel Cell." Journal of The Electrochemical Society, February 6, 2025. https://doi.org/10.1149/1945-7111/adb33b.

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Abstract Water is a key factor in anion-exchange membrane fuel cells, since it is both a product and a reactant, and humidifies the membrane and the ionomer phase. To optimise the operation conditions preventing cathode drying and anode flooding, better knowledge on the water transport is needed. In this work, the water transport across an Aemion™ membrane is quantified for different applied water partial pressure differences and current densities. Two membrane thicknesses, 25 and 50 μm, are studied, as well as two gas diffusion layers (GDLs) of different hydrophobicity: hydrophobic Sigracet 2
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26

Hou, Liutong, Jean‐François Gérard, Sébastien Livi, and Jannick Duchet‐Rumeau. "From the Design of LIonomers to the Development of Maleic Anhydride‐Grafted‐Polypropylene (PPgMA) Microcellular Foams." Journal of Applied Polymer Science, February 13, 2025. https://doi.org/10.1002/app.56825.

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ABSTRACTIn this paper, a new route is reported to design ionic liquid branched polypropylene (PP) from the reaction of 1‐aminoethyl‐3‐methylimidazolium bromide ([AEMIM] Br) and maleic anhydride grafted‐PP (PPgMA). Therefore, LIonomers, the 2.0 generation of ionomers, have been obtained. Series of LIonomers with different structures and morphologies are prepared via (i) tuning maleic anhydride (MA) and [AEMIM] Br contents, (ii) dispersion of ionic liquid, and (iii) the ionic liquids branches assembling. The microstructure especially the location and assembling of grafted [AEMIM] Br is determine
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