Article
Polymer Science
Kajari Mazumder, Hartmut Komber, Eva Bittrich, Brigitte Voit, Susanta Banerjee
Summary: A series of novel sulfur containing high refractive index polymers were synthesized and their physico-chemical properties were investigated. The polymers showed high transparency and refractive index, along with high thermal stability and excellent mechanical properties, making them promising candidates for opto-electronic devices.
Review
Chemistry, Physical
Minghan Xu, Hao Xue, Qingfu Wang, Lichao Jia
Summary: Proton exchange membrane fuel cells (PEMFCs) are potential clean energy sources attracting attention, with a focus on developing high-performance, low-cost PEMs to replace benchmark Nafion membranes. Sulfonated poly(arylene ether ketone)s (SPAEKs) and sulfonated poly(arylene ether sulfone)s (SPAESs) are promising candidates due to their performance and cost advantages. Efforts are classified and introduced in developing SPAEK and SPAES membranes for promising research directions in the field.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Multidisciplinary
Ermelinda Bloise, Maria Rosaria Lazzoi, Lucia Mergola, Roberta Del Sole, Giuseppe Mele
Summary: Cashew nut shell liquid (CNSL), a byproduct of the cashew industry, is an important natural source of phenolic compounds that can be used as an alternative to synthetic substances in various industrial applications. The unique functional groups of CNSL components allow for the design of interesting nanostructures with tunable properties for bioactive applications.
Article
Chemistry, Physical
Ao Nan Lai, Pei Zhi Zheng, Shu Chun Li, Yi Fei Zhu, Peng Cheng Hu, Shu Feng Zhou
Summary: This study presents a new approach for constructing higher-performance anion exchange membranes (AEMs) by combining block-type and comb-shaped architectures. The synthesized quaternization fluorene-containing block poly (arylene ether nitrile ketone)s exhibit efficient ion-transport channels and high hydroxide conductivities. The AEMs also demonstrate excellent anti-swelling property, mechanical properties, thermal and oxidative stability, and alkaline stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Electrochemistry
Jiaqi Xu, Zongcai Deng, Bo Wu, Meijin Lin, Dongyang Chen
Summary: Organic polymers with redox-active moieties have gained attention as sustainable, flexible, environmentally benign, and highly stable electrode materials for high-performance rechargeable batteries. By synthesizing viologen functionalized fluorene-containing poly(arylene ether ketone)s (MV-FPAEKs) and using MV-FPAEK-96 with a DF of 96% as the active material for the polymer cathode, it was found that the stability in the electrolyte can be increased while maintaining rechargeability.
ELECTROCHIMICA ACTA
(2022)
Article
Energy & Fuels
Adama Coulibaly, Mohamed K. Sako, Doudjo Soro, Sayon Sidibe, Richardson Yohan
Summary: This study investigates the valuation of cashew nut shell liquid (CNSL) mixed with diesel fuel as an energy source, and verifies its feasibility through combustion tests on a diesel engine. The results indicate that using purified CNSL as fuel up to 60% is possible, but improvement in purification techniques is still needed.
Article
Green & Sustainable Science & Technology
Kelson de Sousa Leite, Antonio Alves de Carvalho, Paulo Ronaldo Sousa Teixeira, Jose Milton Elias de Matos
Summary: One challenge faced by the ceramics industry is to enhance the corrosion resistance of ceramic materials, requiring detailed investigation using various characterization methods and understanding of technological properties. A protective coating, such as cashew nut shell liquid (CNSL), can improve the corrosion resistance of ceramic materials. This study explored the inhibitory action of CNSL on corrosion.
Article
Agricultural Engineering
Hongwei Wu, Qing Li, Haolin Yu, Minmin Gu, Yudie Wang, Chensen Xu, Zhixin Liao
Summary: This work explores an eco-friendly approach to extracting cashew nut shell liquid (CNSL) and refining cardanol from cashew nuts produced in Hainan, China. CNS, which is usually considered waste from agricultural processing, can be extracted into valuable CNSL using solvent extraction or supercritical CO2 extraction. The composition of extracted CNSL varies with different conditions, and less polar solvents extract more CNSL. Supercritical CO2 extraction also shows superior performance in CNSL extraction as an environmentally friendly method. CNSL from Hainan cashew nuts contains a high amount of anacardic acid. The extracted CNSL can be decarboxylated and separated to obtain a mixture of cardanol consisting of four olefins with different numbers of double bonds. Cardanol can be converted to saturated cardanol and high purity cardanol monoene through catalytic hydrogenation and catalytic transfer hydrogenation, respectively. Both saturated cardanol and cardanol monoene have promising prospects due to their chemical structure.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Physical
Yunji Xie, Di Liu, Anna Ringuette, Jinhui Pang, Hatice Mutlu, Dominik Voll, Patrick Theato
Summary: This study reports the synthesis of highly branched sulfonated poly(arylene ether ketone sulfone) copolymers as proton exchange membranes (PEMs), and explores the effects of different branching agent ratios on the membrane properties. Among the fabricated membranes, a 12.5% branching agent ratio PEM exhibited comparable proton conductivity and swelling change to Nafion 117, achieving a balance between proton conductivity and dimensional stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sheng Guo, Timothy M. Swager
Summary: POPs and PAEs are versatile polymer materials with porous properties and high performance characteristics. A new synthetic method has been developed for the preparation of PAEs, allowing for a wider range of compositions and architectures. These porous PAEs are solution processable and have potential applications in heavy-metal-ion sensing and capture.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Materials Science, Ceramics
Yinan Zhang
Summary: In this study, a new nanocrystal composite material was developed by introducing hyperbranched polymer, cadmium acetate, and selenourea into the synthesis process. The obtained CdSe/PAEK nanocomposite exhibited excellent optical and thermal properties.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Merve G. Seden, Emre Basturk, Tulay Y. Inan, Nilhan K. Apohan, Atilla Gungor
Summary: In this study, molecular weight-controlled and fluorine-containing polyarylethers (MWCPAEs) were synthesized and blend membranes with excellent properties were prepared through sulfonation and blending. The chemical, mechanical, thermal, and hydrolytic properties of the blend membranes are comparable to or better than Nafion.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Polymer Science
Zhen Wang, Shu Feng Zhou, Yi Zhi Zhuo, Ao Nan Lai, You Zhong Lu, Xiao Bin Wu
Summary: In this study, adamantane groups were introduced into the anion exchange membranes for fuel cells, resulting in a comb-shaped structure. By adjusting the ratio of hydrophobic to hydrophilic segments, the membranes exhibited improved mechanical properties and ionic conductivity. The resulting membranes showed well-defined microphase separation between the hydrophilic and hydrophobic segments, leading to high ionic conductivity and excellent mechanical properties. Therefore, these membranes have great potential for application in fuel cells.
Article
Chemistry, Physical
Zhenguo Zhang, Jiahui Ren, Mengchi Ju, Xuan Chen, Jingmei Xu, Zhe Wang, Lingxin Meng, Pengyun Zhao, Hao Wang
Summary: Metal-organic frameworks (MOFs) are new porous crystalline materials, and Zr-based MOF-801 with structural defects can achieve high surface area and water absorption capacity. Hybrid membranes combining structural-defect MOF-801 and C-SPAEKS show promising proton conductivity under high temperature and humidity conditions, comparable to Nafion 117.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Fei Xu, Si Chen, Meng You, Jianqiang Meng
Summary: A series of novel poly (arylene ether ketone) with pendant zwitterion groups were designed and the water and salt transport properties were characterized. The study showed that the zwitterionic polymers exhibited higher water/salt permeability selectivity compared to sulfonated polymers.
JOURNAL OF MEMBRANE SCIENCE
(2023)