Article
Biochemistry & Molecular Biology
Diana Serbezeanu, Corneliu Hamciuc, Tachita Vlad-Bubulac, Alina-Mirela Ipate, Gabriela Lisa, Ina Turcan, Marius Andrei Olariu, Ion Anghel, Dana Maria Preda
Summary: Flame-resistant polymer composites were prepared by incorporating flame retardant, cerium oxide, and graphene oxide into a polyvinyl alcohol (PVA) matrix. Thermogravimetric analysis and microscale combustion tests showed improved fire resistance properties due to the addition of these materials. Moreover, composites with LiClO4 exhibited higher electrical conductivity and enhanced electrical properties. Taking these findings into consideration, these improved polymer composites are intended for use in Li-ion battery manufacturing.
Article
Chemistry, Applied
Jheng-Yu Wu, Chien Wei Ooi, Cher Pin Song, Chi-Yun Wang, Bing-Lan Liu, Guan-Yu Lin, Chen-Yaw Chiu, Yu-Kaung Chang
Summary: HTCC, a chitosan derivative with quaternary ammonium groups, shows higher antibacterial activity but is unsuitable for electrospinning due to its hydrophilic nature. Adding PVA enhances its electrospinnability. Crosslinking PVA/HTCC/BI nanofiber membranes improves stability and antibacterial efficacy, making it a promising material for food packaging and wound dressing.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Physical
Yuhang Chen, Pan Li, Caili Yuan, Lingping Zeng, Jianchuan Wang, Baosheng Li, Zidong Wei
Summary: High-performance anion exchange membranes (AEMs) are crucial for the commercialization of alkaline AEM fuel cells. Modification of commercial polymers is an effective way to prepare AEMs with high ionic conductivity and excellent mechanical properties. In this study, a PVA-based AEM was successfully prepared, showing high OH- conductivity and peak power density.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Tsung-Rong Kuo, Lu -Yin Lin, Kuan-Yu Lin, Sibidou Yougbare
Summary: This study investigates the addition of TiO2 with different particle sizes and phases as an inorganic filler in gel electrolyte for FSC, aiming to enhance the ionic conductivity. Results show that using P25 TiO2 in gel electrolyte can achieve the best energy storage ability for FSC.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Composites
Linhong Li, Yue Qin, Hao Wang, Maohua Li, Guichen Song, Yuming Wu, Xianzhe Wei, Zulfiqar Ali, Jian Yi, Shulin Song, Cheng-Te Lin, Nan Jiang, Jinhong Yu
Summary: Highly thermal conductive polymer composites consisting of ND-OH and PVA were reported, with the interfacial properties influencing thermal conductivity. The interface strength between matrix and filler dominates thermal conductivity at low content, while filler-filler interaction dominates at high loadings. The PVA/ND-OH composite exhibited an ultrahigh thermal conductivity of 18.98 W m(-1) K-1 at 90 wt% ND-OH, showing potential for thermal management in next-generation electronic products.
COMPOSITES COMMUNICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Jheng-Yu Wu, Chi-Yun Wang, Kuei-Hsiang Chen, You-Ren Lai, Chen-Yaw Chiu, Hung-Che Lee, Yu-Kaung Chang
Summary: N-(2-hydroxy) propyl-3-trimethylammonium chitosan chloride (HTCC) is blended with polyvinyl alcohol (PVA) to improve the electrospinnability of nanofibers. The resulting PVA-HTCC nanofiber membranes exhibit excellent antibacterial activity and biocompatibility.
Article
Materials Science, Composites
Jitender Paul Sharma, Neelam Guleria
Summary: In this study, nanocomposite polymer electrolyte films were prepared using nanosized fumed silica and polyethylene oxide-based polymer electrolytes containing ammonium bifluoride. The addition of high dielectric constant plasticizer propylene carbonate (PC) increased the ionic conductivity. The research also investigated the temperature-dependent behavior, activation energy, and mechanical properties of the polymer electrolytes.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2022)
Article
Materials Science, Composites
Tingting Zhang, Xuhui Chen, Zhenyou Guo, Youbo Zhao, Hao Xiu, Hongwei Bai, Qin Zhang, Qiang Fu
Summary: This study demonstrates a novel route to control the distribution of hydrophilic silica in polymer blends by tailoring the silanol number of the silica, resulting in improved impact toughness and maintained strength and modulus of the blends.
COMPOSITES COMMUNICATIONS
(2021)
Article
Polymer Science
Seong Baek Yang, Mohammad Rezaul Karim, Jungeon Lee, Jeong Hyun Yeum, Sabina Yeasmin
Summary: Novel poly(vinyl alcohol)/poly(vinyl butyral-vinyl alcohol) films with improved hydrophobicity were prepared by saponification of poly(vinyl acetate)/poly(vinyl butyral) blend films. The saponification process was confirmed by various analysis techniques. The hydrophobicity of the films increased with increasing poly(vinyl butyral) content. The saponified films exhibited improved mechanical properties and unique surface characteristics. These films have potential applications in biomaterials, filters, and medical devices.
Article
Chemistry, Physical
Nur Adiera Hanna Rosli, Kee Shyuan Loh, Wai Yin Wong, Tian Khoon Lee, Azizan Ahmad
Summary: This study investigated the effects of propylammonium nitrate (PAN) ionic liquid and/or silicon dioxide (SiO2) filler on the morphology and physical properties of phosphorylated chitosan/poly(vinyl alcohol) (NMPC/PVA) composite membranes. The results showed that increasing the loading of PAN ionic liquid improved the ionic conductivity and water uptake of the composite membranes, while the addition of SiO2 filler enhanced the power density of the membranes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Polymer Science
Dan Zhao, Meisheng Li, Mingmin Jia, Shouyong Zhou, Yijiang Zhao, Wenbo Peng, Weihong Xing
Summary: By incorporating a low-density Schiff base network framework into a high-density poly(vinyl alcohol) matrix, asymmetric pervaporation mixed matrix membranes exhibit improved hydrophilicity, mechanical stability, and separation performance.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Manawwer Alam, Mohammad Altaf, Naushad Ahmad
Summary: The researchers have developed a nanocomposite coating material using vegetable oil as a renewable resource, which exhibits excellent scratch resistance, corrosion protection, and high-temperature stability; this material is significant for eco-friendly and renewable resource alternatives to petro-based chemicals.
Article
Thermodynamics
R. A. Mironov, O. V. Tomchani, V. O. Guydenko, M. O. Zabezhailov
Summary: A thermal insulation material composed of fiber-reinforced fumed silica with various opacifiers was produced and analyzed in terms of optical and thermal properties. The addition of silicon carbide opacifier was found to affect the optical properties and thermal conductivity of the material. The study compared experimental results with theoretical calculations based on Mie theory and measured data, highlighting the importance of opacifier composition in influencing the material's performance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Physical
Zulfiqar Ali Raza, Asma Iftikhar, Muhammad Aslam, Muhammad Shoaib ur Rehman, Abdul Lateef
Summary: This study focused on the production and characterization of silica nanoparticles (SNPs) incorporated polyvinyl alcohol (PVA)-based nanocomposite films. SEM, FTIR, XRD, and WCA were used for characterization, while UV visible spectroscopy was utilized for determining the optical parameters. The results showed that the prepared nanocomposite films exhibited surface non-wetting and enhanced mechanical properties, making them potentially useful for optoelectronic devices even in humid environments.
Article
Biochemistry & Molecular Biology
Patrycja Glinska, Andrzej Wolan, Wojciech Kujawski, Edyta Rynkowska, Joanna Kujawa
Summary: The study elaborated a novel synthesis route of grafting PVA with fluorinated protic ionic liquids bearing sulfo groups, achieving functionalization of PVA with proton character. This approach provides a new perspective for the development of high-performance PEMs.
Article
Engineering, Chemical
Thi Tuong Van Tran, Selvaraj Rajesh Kumar, Chi Hieu Nguyen, Jing Wen Lee, Hui-An Tsai, Chia-Hsun Hsieh, Shingjiang Jessie Lue
Summary: The study demonstrated that the introduction of GO and PVP additives in PVDF membranes significantly improved the physicochemical properties of the membranes, enhancing permeance and dye removal efficiency. The membranes showed high stability in filtration performance and promising potential for actual dye wastewater treatment.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Electrochemistry
Manojkumar Seenivasan, Chun-Chen Yang, She-huang Wu, Ying-Jeng Jame Li, Wen-Chen Chien, Shakkthivel Piraman, Shingjiang Jessie Lue
Summary: In this study, Ni-rich Li[Ni0.8Co0.15Al0.05]O-2 (NCA) was prepared as a cathode material for lithium-ion batteries and coated with LiAlSiO4 (LASO) to improve cycling stability, electrical conductivity, and Li+ ion diffusivity. Among the samples, NCA coated with 1 wt.% LASO exhibited optimal electrochemical performance, with high columbic efficiencies and capacity retention. The LASO coating effectively decreased anisotropic mechanical stress, enhanced Li+ ion diffusion, and provided stable protective barriers against morphological changes.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Selvaraj Rajesh Kumar, Ya-Hui Hsu, Truong Thi Tuong Vi, Jong-Hwei Su Pang, Yao-Chang Lee, Chia-Hsun Hsieh, Shingjiang Jessie Lue
Summary: This work aimed to investigate the interaction and cytotoxicity of nanometric graphene oxide (GO) with nasopharyngeal carcinoma cells, as well as its potential application in photon therapy. The findings showed that GO had limited cytotoxic effects on cells and no significant size changes, but did alter secondary protein structures in the treated cells. Additionally, low doses of photon radiation did not have significant effects on cell mortality, but higher doses accelerated cell apoptosis, especially in GO-treated cells.
Article
Biochemistry & Molecular Biology
Chih-Chien Hu, Selvaraj Rajesh Kumar, Truong Thi Tuong Vi, Yu-Tzu Huang, Dave W. Chen, Shingjiang Jessie Lue
Summary: In this study, the antimicrobial peptide GL13K was coated onto a PEEK substrate, resulting in significant antibacterial and biofilm-inhibitory effects against Staphylococcus aureus bacteria. The coating technique used in this study holds promise for providing bactericidal activity and biofilm resistance to medical implantable devices.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Po-Ya Hsu, Ting-Yu Hu, Selvaraj Rajesh Kumar, Kevin C. -W. Wu, Shingjiang Jessie Lue
Summary: This study successfully prepared composite membranes with swelling-resistant and stability for alkaline fuel cell applications by incorporating nanofillers without drying. The composites with high ZIF-8 content exhibited high selectivity and excellent performance, showing promise for alkaline fuel cell applications.
Article
Pharmacology & Pharmacy
Thi Tuong Vi Truong, Chien-Chang Chen, Selvaraj Rajesh Kumar, Chih-Chien Hu, Dave W. Chen, Yu-Kuo Liu, Shingjiang Jessie Lue
Summary: Spherical silver nanoparticles and silver nanoprisms were synthesized and decorated on graphene oxide nanosheets, showing promising antibacterial properties against Gram-positive bacteria, especially at high concentrations. The levels of reactive oxygen species produced in the bacteria-nanomaterial mixtures were highly correlated to the antibacterial efficacy values.
Article
Chemistry, Physical
Ting -Nan Hsia, Hsin-Chun Lu, Yu-Chih Hsueh, Selvaraj Rajesh Kumar, Chien-Sheng Yen, Chun-Chen Yang, Shingjiang Jessie Lue
Summary: In this study, a dense PVDF-HFP coating was fabricated as a protective layer and electrolyte separator for Li-O-2 batteries. The coating demonstrated improved power density, capacity, and cycling lifetime, indicating its potential for enhancing the performance of Li-O-2 batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Li-Ting Wang, Yu-Han Chen, Wei-Ting Chang, Selvaraj Rajesh Kumar, Chien-Chang Chen, Shingjiang Jessie Lue
Summary: This study demonstrated the fabrication of composite membranes containing graphene oxide (GO) and investigated their separation mechanisms for salts and bovine serum albumin (BSA) solutions. The incorporation of GO resulted in an enlarged pore size and reduced zeta potential of the composite membranes. The membranes exhibited improved water permeability and reduced BSA adhesion, highlighting the potential for GO in enhancing membrane performance for protein separation.
Article
Polymer Science
Si-Han Peng, Yen-Hsiang Yu, Hsin-Chun Lu, Shingjiang Jessie Lue
Summary: The aim of this research is to investigate a flexible composite lithium-ion-conducting membrane (FC-LICM) made of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and titanium dioxide (TiO2) nanoparticles. The addition of TiO2 improved the charge transfer resistance values and enhanced the ionic transport of the FC-LICM. The FC-LICM with 50 wt% TiO2 loading was assembled into a Li-air battery, showing a reduction in overpotential and improved performance compared to the bare polymer.
Article
Chemistry, Physical
Selvaraj Rajesh Kumar, Jia-Jie Wang, Shingjiang Jessie Lue
Summary: Alkaline-doped PBI/Fe3O4-GO nanocomposite membranes were synthesized for improved ion conduction and reduced alcohol permeation in DMAFCs. The alignment of Fe3O4-GO nanofillers in a PBI matrix using a magnetic field resulted in a significant increase in hydroxide conductivity and a decrease in fuel permeability compared to other samples.
JOURNAL OF POWER SOURCES
(2023)
Article
Infectious Diseases
Selvaraj Rajesh Kumar, Chih-Chien Hu, Truong Thi Tuong Vi, Dave W. Chen, Shingjiang Jessie Lue
Summary: In this study, the antimicrobial peptide nisin was successfully conjugated onto the surface of sulfonated polyetheretherketone (SPEEK), which was decorated with graphene oxide (GO). The results showed that both nisin and GO had bactericidal effects, and the SPEEK-GO-nisin sample exhibited the highest antibacterial activity.
