Article
Chemistry, Physical
Bapun Barik, Yejin Yun, Aniket Kumar, Hohan Bae, Yeon Namgung, Jun-Young Park, Sun-Ju Song
Summary: Acidic group functionalized graphene oxide (GO) is used to improve the quality of state-of-the-art Nafion electrolytes for next-generation fuel cell application. Single-step-phosphorylated graphene oxide (sPGO) modified Nafion (sPGO/NF) achieves high proton conductivity, chemical durability, and power density under actual fuel cell conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Yiqin Liu, Xunli Mao, Hong Wu, Xiaoyao Wang, Benbing Shi, Chunyang Fan, Yan Kong, Zhongyi Jiang
Summary: By incorporating sulfonated lignin as an intercalator, highly conductive graphene oxide/sulfonated lignin membranes were prepared. These membranes exhibited high proton conductivity and maximum power density, attributed to the abundant sulfonic acid groups and ether bonds providing additional proton transfer sites, as well as the continuous proton transfer network.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Physical
Nisar Ali, Farman Ali, Saboor Khan, Zeshan Ali Sheikh, Amir Said, Zahid Nawaz, Ihsanullah Ihsanullah, Muhammad Bilal
Summary: Nafion/sulfonated polyimide (SPI-x) composite membranes were fabricated by incorporating SPI with different ratios of Nafion, demonstrating improved physicochemical properties such as ion exchange capacity and thermal stability. Various analytical techniques confirmed the structure and performance of the composite membranes, with the morphology closely related to the SPI content.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Nanoscience & Nanotechnology
Mohammad Atiqur Rahman, Junya Yagyu, Md. Saidul Islam, Masahiro Fukuda, Sora Wakamatsu, Ryuta Tagawa, Zhiqing Feng, Yoshihiro Sekine, Junya Ohyama, Shinya Hayami
Summary: Graphene oxide (GO)-based materials have been extensively studied as low-cost efficient solid electrolytes for fuel-cell application. However, the limited proton conductivity of GO in the out-of-plane directions and associated lower fuel-cell performance restrict their practical application. In this study, a sulfate ion-intercalated three-dimensional graphene oxide (3DSGO) with exceptionally high out-of-plane proton conductivity and improved fuel-cell performance was demonstrated.
ACS APPLIED NANO MATERIALS
(2023)
Article
Energy & Fuels
S. A. Gokulakrishnan, Vikas Kumar, G. Arthanareeswaran, A. F. Ismail, Juhana Jaafar
Summary: By adding halloysite nanoclay and f-GO to SPEEK membrane, the thermal stability, proton conductivity, and hydrophilicity can be improved, making it an excellent membrane material for direct methanol fuel cell applications.
Article
Polymer Science
Tushar Kanti Maiti, Jitendra Singh, Subrata Kumar Maiti, Jagannath Majhi, Arihant Ahuja, Manjinder Singh, Anasuya Bandyopadhyay, Gaurav Manik, Sujay Chattopadhyay
Summary: In this study, the introduction of sulfonic acid functionalized graphene oxide (SGO) into Perfluorosulfonic acid (PFSA) membranes improved the glass transition temperature (Tg), mechanical properties, proton conductivity, and single-cell performance. The loading of SGO increased the Tg and modulus of PFSA composite membranes, leading to enhanced proton conductivity and fuel cell performance.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Andrea Basso Peressut, Saverio Latorrata, Paola Gallo Stampino, Giovanni Dotelli
Summary: This study presents a simple method for preparing self-assembling sulfonated graphene oxide membranes, investigating the effect of different sulfuric acid-to-graphene oxide ratios to find an optimal sulfonation interval. The membranes exhibit notable water-retaining and proton-exchanging properties, making them worthy of further optimization for potential use as electrolytes in PEM fuel cells.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Green & Sustainable Science & Technology
Fatima C. Teixeira, Antonio P. S. Teixeira, C. M. Rangel
Summary: In this study, new doped Nafion membranes were prepared by casting with AzBPs as dopants. The proton conduction properties of the modified membranes were significantly improved compared to the reference Nafion membrane. The membrane with AzBP1 as dopant showed the best proton conductivity.
Article
Materials Science, Multidisciplinary
Arijit Ghorai, Sambit Roy, Sovik Das, Hartmut Komber, Makarand M. Ghangrekar, Brigitte Voit, Susanta Banerjee
Summary: A series of sulfonated polytriazoles were synthesized via copper-induced click polymerization, demonstrating high molecular weight, thermal stability, and proton conductivity, with balanced water management and high oxidative stability. Additionally, the membranes showed a hydrophilic-hydrophobic phase-segregated morphology and comparable performance to Nafion 117 in microbial fuel cells.
ACS APPLIED POLYMER MATERIALS
(2021)
Review
Biochemistry & Molecular Biology
Gorkem Memisoglu, Raghavan Chinnambedu Murugesan, Joseba Zubia, Aleksey G. Rozhin
Summary: Graphene, a two-dimensional hexagonal honeycomb carbon structure, is widely used in membrane technologies due to its unique properties. Incorporating nanoparticles like carbon nanotubes and metal oxide into graphene membranes can improve photocatalysis in water treatment systems. Developing sustainable and environmentally friendly applications is crucial for new and groundbreaking water treatment systems.
Article
Biochemistry & Molecular Biology
Takeru Wakiya, Manabu Tanaka, Hiroyoshi Kawakami
Summary: Novel nanofiber framework (NfF)-based composite membranes composed of phytic acid (Phy)-doped polybenzimidazole nanofibers (PBINf) and Nafion matrix electrolyte were fabricated through the compression process, showing higher proton conductivity and lower activation energy at low relative humidity.
Article
Engineering, Chemical
Md Shahjahan Kabir Chowdury, Young Jin Cho, Sung Bum Park, Yong-il Park
Summary: This study focuses on improving the proton conductivity of graphene oxide (GO) by modifying its surface with a silane compound. The modified GO showed enhanced proton conductivity and improved properties such as water uptake and dimensional stability. The findings suggest that the modified GO could be a promising material for proton exchange, gas permeation, and fuel cell applications.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Md Shahjahan Kabir Chowdury, Young Jin Cho, Sung Bum Park, Yong-il Park
Summary: By modifying graphene oxide, a high-speed proton conduction path was formed, which significantly improved proton conductivity in fuel cells. Further enhancement in proton conductivity was achieved by controlling the addition amount, optimizing fuel cell performance.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Applied
Shamim Roshan, Ali Asghar Sarabi, Reza Jafari, Gelareh Momen
Summary: Thin anticorrosive superhydrophobic coatings were prepared using a scalable, simple, and inexpensive spraying method. The coatings demonstrated excellent corrosion protection and self-cleaning ability. The performance of the coatings was affected by the concentration of silica nanoparticles, with the best results achieved at 4 wt% nanoparticles.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Multidisciplinary
Zhiyang Zeng, Ruiyang Song, Shengping Zhang, Xiao Han, Zhen Zhu, Xiaobo Chen, Luda Wang
Summary: The introduction of N-doped graphene membranes (NGMs) in the study increased the permeance and selectivity of protons, showing significant advantages over commercial PEMs and providing a high-performance solution for practical applications.
Article
Materials Science, Multidisciplinary
Santosh Khanal, Yunhua Lu, Dandan Jin, Shiai Xu
Summary: In this study, LDHs were combined with IFR to prepare flame retardant high density polyethylene composites, showing improved thermal and flame retardant properties. The LDHs resulted in reduced PHRR in the composites, compact char residue with high graphitic degree, but no significant increase in tensile strength.
FIRE AND MATERIALS
(2022)
Article
Polymer Science
Ran Wang, Shiai Xu
Summary: In this study, transparent powder with a refractive index similar to PVC was used as filler to prepare PVC composite film with high transparency. The modified powder significantly improved the mechanical properties and transparency of the PVC composite film, with optimal loading at 7.5 phr.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Santosh Khanal, Yunhua Lu, Li Dang, Shiai Xu
Summary: The use of layered nanomaterials in combination with intumescent flame retardant provides an excellent means of preparing high-performance flame retardant composites, with P-MMT showing better performance in reducing peak heat release rate compared to A-MMT.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Applied
Li Gao, Dandan Jin, Yunhua Lu, Santosh Khanal, Shiai Xu
Summary: In this study, titanium dioxide-loaded layered double hydroxides were synthesized and used as thermal and light stabilizers for PVC. The resulting composite exhibited excellent thermal stability and UV-shielding property, significantly improving the thermal stability and anti-UV aging performance of PVC.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2022)
Article
Chemistry, Applied
Jinzhi Han, Mucun Zhang, Haiqi Zhang, Hongming Liu, Shiai Xu
Summary: In this study, a novel environmentally friendly plasticizer AETBC was synthesized and used to plasticize PVC. The plasticized PVC showed improved mechanical properties and migration stability compared to commonly used plasticizers like DOP, TBC, and ATBC. AETBC also enhanced the thermal stability of PVC.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2022)
Article
Chemistry, Applied
Li Gao, Dandan Jin, Yunhua Lu, Shiai Xu
Summary: By incorporating nanomaterials loaded with TiO2@ZnAlSn and PETMP into plasticized PVC composites, this study successfully improved the mechanical properties, thermal stability, flame retardancy, and smoke suppression of the composites. Experimental and theoretical investigations provided evidence for the effectiveness of this approach.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2022)
Article
Polymer Science
Guoliang Pang, Miao Yi, Xin Yin, Wenliang Wu, Shiai Xu
Summary: In this study, ultraviolet-induced graft polymerization combined with wet chemical treatment was used to immobilize chitosan (CS) onto the surface of polyether ether ketone (PEEK). The grafting degree of CS could be controlled by adjusting the CS solution concentration, and CS-grafted PEEK exhibited higher hydrophilicity compared to unmodified PEEK. Furthermore, the CS-grafted PEEK demonstrated good antibacterial activity.
IRANIAN POLYMER JOURNAL
(2022)
Article
Chemistry, Analytical
Lei Ma, Qiuyan Bi, Yuanhui Tang, Chao Zhang, Fuju Qi, Hao Zhang, Yifan Gao, Shiai Xu
Summary: A positively charged nanofiltration (NF) membrane was prepared by depositing polydopamine-coated graphitic carbon nitride as the interlayer and carrying out interfacial polymerization. This membrane showed good separation performance and fouling resistance for lithium recovery from brine.
Article
Polymer Science
Jiajun Xu, Shiai Xu
Summary: This study developed a chromate-free method for surface modification of aluminum foil using polydopamine functionalization after titanium chemical conversion in response to the need for increased adhesive strength and durability of the adhesive joint in the Al/polymer laminated film of soft package lithium-ion battery. The results showed that the amine and catechol groups of the polydopamine improved the interfacial adhesion between the adhesive and aluminum foil by enhancing wettability and interfacial interaction.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Jiyuan Liu, Rui Yuan, Qi Sang, Li Dang, Li Gao, Benhua Xu, Shiai Xu
Summary: This study investigates the effects of acetylation modification on the plasticization properties of citrates and provides insights into the underlying mechanisms using experimental and molecular dynamics simulation approaches. The results show that acetylated citrates have better plasticizing efficiency compared to non-acetylated citrates. The study also explores the toxicity of acetylated citrates. Overall, this research contributes to a better understanding of the plasticizing mechanisms of citrates and proposes an optimized citrate structure with higher performance.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Polymer Science
Rujie Li, Shiai Xu, Jiajun Xu, Tongtong Pan, Beibei Sun, Li Dang
Summary: The poor processing and rheological properties of highly filled composites caused by the high loading of fillers can be improved with the use of maleic anhydride grafted polyethylene wax (PEWM) as compatibilizer and lubricant. Two PEWMs with different molecular weights were synthesized and characterized. The addition of PEWM significantly improved the processability and fluidity of the composites, while reducing viscosity. However, both PEWM and polyethylene wax (PEW) had adverse effects on flame retardancy.
Article
Polymer Science
Rujie Li, Beibei Sun, Li Dang, Tongtong Pan, Jiajun Xu, Shiai Xu
Summary: The addition of maleic anhydride grafted polypropylene (MAPP) with high melt flow index (MFI) improves the processability and flowability of magnesium hydroxide (MH)/linear low-density polyethylene (LLDPE) composites, leading to a reduction in viscosity and the formation of a transition layer. In addition, the simultaneous addition of MH and MAPP has a synergistic smoke suppression effect.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Xiao-Tong Su, Guo-Cheng Jin, Shi-Ai Xu
Summary: In this study, a tissue adhesive with excellent mechanical properties, tissue affinity, antibacterial properties, and coagulation performances was prepared by incorporating MPEG-co-PCL and SNPs into BCA. The optimal formulation showed significantly improved adhesion strength, flexibility, and antibacterial properties compared to BCA alone. This work provides an effective strategy for developing adhesives with potential clinical applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Xiaofei Sun, Mucun Zhang, Haiqi Zhang, Hongming Liu, Shiai Xu
Summary: In this study, the mechanical properties of PVC gloves were improved by incorporating modified fillers. The n-Octadecyl mercaptan-modified CaCO3/PVC composite films showed higher light transmittance, lower moisture permeability, and higher tensile properties, making them suitable for low-temperature conditions.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Beibei Sun, Li Dang, Qiuyan Bi, Rujie Li, Qiuhui Gong, Zhihao Wan, Shiai Xu
Summary: In this study, maleic anhydride-modified polymers were used as bulking agents to improve the processing and mechanical properties of highly filled composites. The addition of the compatibilizer significantly enhanced the mechanical properties of the composites, but had a negative impact on their flame retardancy.