1
|
Nayak S, Sahoo B, Rout TK, Bhagat AN. Dielectric and Mechanical Properties of PDMS-La 2Ba 2XZn 2Ti 3O 14 (X = Mg/Ca/Sr) Nanocomposites. ACS OMEGA 2023; 8:37090-37097. [PMID: 37841148 PMCID: PMC10569002 DOI: 10.1021/acsomega.3c04538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 08/02/2023] [Indexed: 10/17/2023]
Abstract
Flexible polydimethylsiloxane-La2Ba2XZn2Ti3O14 (X = Mg/Ca/Sr) [PDMS-LBT] nanocomposites with high permittivity (dielectric constant, k) are prepared through a room-temperature mixing process. The LBT nanoparticles used in this study are prepared through a high-temperature solid-state reaction. It is observed that LBT (X = Mg/Ca) nanoparticles are spherical in nature, with particle size ∼20 nm, as observed from the HRTEM images, whereas LBT (X = Sr) nanoparticles are cubical in nature with particle size ≥100 nm. These LBT (X = Mg/Ca/Sr) nanoparticles are crystalline in nature, as apparent from the XRD analysis and SAED patterns. The permittivity of LBT nanoparticles is higher when "Ca" is present in place of "X". These three oxides show a temperature-dependent dielectric behavior, where LBT nanoparticles with "Sr" show a sharp change in permittivity at a temperature of ∼105 °C. These kinds of oxide materials, especially LBT (X = Sr) nanoparticles/oxides, can be used in dielectric/resistive switching devices. The effect of LBT nanoparticle concentration on the dielectric and mechanical properties of PDMS-LBT nanocomposites is widely studied and found that there is a significant increase in dielectric constant with an increase in the concentration of LBT nanoparticles. There is a decrease in the volume resistivity with the increase in the LBT nanoparticle concentration. All the PDMS-LBT nanocomposites have low dielectric loss (ε″) compared to the dielectric constant value. It is found that both permittivity (ε') and AC conductivity (σac) of PDMS-LBT composites are increased with the temperature at a frequency of 1 Hz. The % elongation at break (% EB) and tensile strength (TS) decrease with the LBT nanoparticle concentration in the matrix PDMS, which is due to the non-reinforcing behavior of LBT nanoparticles. The distribution and dispersion of LBT nanoparticles in the matrix PDMS are observed through HRTEM and AFM/SPM.
Collapse
Affiliation(s)
- Suryakanta Nayak
- Rubber
Technology Centre, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
- Department
of Mechanical Engineering, National University
of Singapore, 9 Engineering
Drive 1, Singapore 117575, Singapore
- Department
of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore
- R&D,
Surface Engineering Research Group, Tata
Steel Limited, Jamshedpur 831001, India
| | - Banalata Sahoo
- Department
of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
- Department
of Chemistry, Regional Institute of Education, Bhubaneswar, Odisha 751022, India
| | - Tapan Kumar Rout
- R&D,
Surface Engineering Research Group, Tata
Steel Limited, Jamshedpur 831001, India
| | - Amar Nath Bhagat
- R&D,
Surface Engineering Research Group, Tata
Steel Limited, Jamshedpur 831001, India
| |
Collapse
|
2
|
Arcanjo Gonçalves BJ, de Souza Figueiredo KC. Developments in downstream butanol separation from ABE fermentation. Chem Eng Technol 2022. [DOI: 10.1002/ceat.202200241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Bruno José Arcanjo Gonçalves
- Department of Chemical Engineering Universidade Federal de Minas Gerais Av. Antonio Carlos, 6627 Pampulha, Belo Horizonte CEP 31270-901 Brazil
| | - Kátia Cecília de Souza Figueiredo
- Department of Chemical Engineering Universidade Federal de Minas Gerais Av. Antonio Carlos, 6627 Pampulha, Belo Horizonte CEP 31270-901 Brazil
| |
Collapse
|
3
|
Xu S, Zuo C, Sun X, Ding X, Zhong Z, Xing W, Jin W. Enriching volatile aromatic compounds of lavender hydrolats by PDMS/ceramic composite membranes. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
4
|
Xu Q, Wang H, Zhang M, Wang J, An X, Hao X, Du X, Zhang Z, Li Y. Pervaporation Removal of Pyridine from Saline Pyridine/Water Effluents Using PEBA-2533 Membranes: Experiment and Simulation. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qian Xu
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Hongyun Wang
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Meng Zhang
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Jie Wang
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xiaowei An
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xiaogang Hao
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xiao Du
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Zhonglin Zhang
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Yongguo Li
- China Institute for Radiation Protection, Taiyuan 030006, P. R. China
| |
Collapse
|
5
|
Ren C, Si Z, Qu Y, Li S, Wu H, Meng F, Zhang X, Wang Y, Liu C, Qin P. CF3-MOF enhanced pervaporation selectivity of PDMS membranes for butanol separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120255] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
6
|
Recycle of ceramic substrate of PDMS/ceramic composite membranes towards alcohol-permselective pervaporation. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119835] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
7
|
Process optimization of acetone-butanol-ethanol fermentation integrated with pervaporation for enhanced butanol production. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.108070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
8
|
Methoxy terminated poly dimethylsiloxane bonded stationary phase for reversed-phase liquid chromatography. J Chromatogr A 2021; 1652:462348. [PMID: 34174717 DOI: 10.1016/j.chroma.2021.462348] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 06/07/2021] [Accepted: 06/09/2021] [Indexed: 02/08/2023]
Abstract
In this work, a methoxy terminated poly dimethylsiloxane modified silica gel material was proposed as a novel stationary phase for reversed-phase liquid chromatography. With 5 μm silica gel as matrix, methoxy terminated poly dimethylsiloxane polymer was grafted by one step chemical bonding reaction. The obtained stationary phase was characterized by scanning electron microscopy, fourier transform infrared spectroscopy and element analysis. To our knowledge, this is the novel methoxy terminated poly dimethylsiloxane bonded stationary phase with good separation efficiency (42107-46988 plates/m for benzene homologues) and high stability (RSD is 0.08-5.09%). Comparing to other traditional columns of the same type, the proposed stationary phase has a wider polarity separation scale and shorter analysis time. In addition to the rapid separation of hydrophobic compound, such column also exhibited great potential in the separation of hydrophilic analytes.
Collapse
|
9
|
Zhu H, Li X, Pan Y, Liu G, Wu H, Jiang M, Jin W. Fluorinated PDMS membrane with anti-biofouling property for in-situ biobutanol recovery from fermentation-pervaporation coupled process. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118225] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
10
|
Rahim SANM, Lee CS, Abnisa F, Aroua MK, Daud WAW, Cognet P, Pérès Y. A review of recent developments on kinetics parameters for glycerol electrochemical conversion - A by-product of biodiesel. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 705:135137. [PMID: 31846815 DOI: 10.1016/j.scitotenv.2019.135137] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/20/2019] [Accepted: 10/21/2019] [Indexed: 06/10/2023]
Abstract
Glycerol is a by-product produced from biodiesel, fatty acid, soap and bioethanol industries. Today, the value of glycerol is decreasing in the global market due to glycerol surplus, which primarily resulted from the speedy expansion of biodiesel producers around the world. Numerous studies have proposed ways of managing and treating glycerol, as well as converting it into value-added compounds. The electrochemical conversion method is preferred for this transformation due to its simplicity and hence, it is discussed in detail. Additionally, the factors that could affect the process mechanisms and products distribution in the electrochemical process, including electrodes materials, pH of electrolyte, applied potential, current density, temperature and additives are also thoroughly explained. Value-added compounds that can be produced from the electrochemical conversion of glycerol include glyceraldehyde, dihydroxyacetone, glycolic acid, glyceric acid, lactic acid, 1,2-propanediol, 1,3-propanediol, tartronic acid and mesoxalic acid. These compounds are found to have broad applications in cosmetics, pharmaceutical, food and polymer industries are also described. This review will be devoted to a comprehensive overview of the current scenario in the glycerol electrochemical conversion, the factors affecting the mechanism pathways, reaction rates, product selectivity and yield. Possible outcomes obtained from the process and their benefits to the industries are discussed. The utilization of solid acid catalysts as additives for future studies is also suggested.
Collapse
Affiliation(s)
| | - Ching Shya Lee
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Faisal Abnisa
- Department of Chemical and Materials Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohamed Kheireddine Aroua
- Centre for Carbon Dioxide Capture and Utilization (CCDCU), School of Science and Technology, Sunway University, Bandar Sunway 47500. Malaysia; Department of Engineering, Lancaster University, Lancaster LA14YW, UK
| | - Wan Ashri Wan Daud
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Patrick Cognet
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INP, UPS, Toulouse, France
| | - Yolande Pérès
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INP, UPS, Toulouse, France
| |
Collapse
|