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Enhanced permeability and stability of PVDF hollow fiber membrane in DCMD via heat-stretching treatment. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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2
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Ma W, Zhou Z, Ismail N, Tocci E, Figoli A, Khayet M, Matsuura T, Cui Z, Tavajohi N. Membrane formation by thermally induced phase separation: Materials, involved parameters, modeling, current efforts and future directions. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Tang Y, Lin Y, Ma W, Wang X. A review on microporous polyvinylidene fluoride membranes fabricated via thermally induced phase separation for MF/UF application. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119759] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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4
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Zhao J, Chong JY, Shi L, Wang R. PTFE-assisted immobilization of Pluronic F127 in PVDF hollow fiber membranes with enhanced hydrophilicity through nonsolvent-thermally induced phase separation method. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118914] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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5
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Tomietto P, Carré M, Loulergue P, Paugam L, Audic JL. Polyhydroxyalkanoate (PHA) based microfiltration membranes: Tailoring the structure by the non-solvent induced phase separation (NIPS) process. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122813] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Remanan S, Ghosh S, Das TK, Sharma M, Bose M, Bose S, Das AK, Das NC. Gradient crystallinity and its influence on the poly(vinylidene fluoride)/poly(methyl methacrylate) membrane‐derived by immersion precipitation method. J Appl Polym Sci 2020. [DOI: 10.1002/app.48677] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Sanjay Remanan
- Rubber Technology Centre Indian Institute of Technology Kharagpur 721302 India
| | - Sabyasachi Ghosh
- Rubber Technology Centre Indian Institute of Technology Kharagpur 721302 India
| | - Tushar Kanti Das
- Rubber Technology Centre Indian Institute of Technology Kharagpur 721302 India
| | - Maya Sharma
- Soft Matter Rheology and Technology Division, Department of Chemical Engineering KU Leuven Leuven 3001 Belgium
| | - Madhuparna Bose
- Department of Biotechnology Indian Institute of Technology Kharagpur 721302 India
| | - Suryasarathi Bose
- Department of Materials Engineering Indian Institute of Science Bangalore 560012 India
| | - Amit Kumar Das
- Department of Biotechnology Indian Institute of Technology Kharagpur 721302 India
| | - Narayan Chandra Das
- Rubber Technology Centre Indian Institute of Technology Kharagpur 721302 India
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Effects of Room Temperature Stretching and Annealing on the Crystallization Behavior and Performance of Polyvinylidene Fluoride Hollow Fiber Membranes. MEMBRANES 2020; 10:membranes10030038. [PMID: 32121401 PMCID: PMC7142550 DOI: 10.3390/membranes10030038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 02/28/2020] [Accepted: 02/28/2020] [Indexed: 12/30/2022]
Abstract
A treatment consisting of room temperature stretching and subsequent annealing was utilized to regulate the morphology and performance of polyvinylidene fluoride (PVDF) hollow fiber membranes. The effects of stretching ratios and stretching rates on the crystallization behavior, morphology, and performance of the PVDF membranes were investigated. The results showed that the treatment resulted in generation of the β crystalline phase PVDF and increased the crystallinity of the membrane materials. The treatment also brought about the orientation of the membrane pores along the stretching direction and led to an increase in the mean pore size of the membranes. In addition, as the stretching ratio increased, the tensile strength and permeation flux were improved while the elongation at break was depressed. However, compared to the stretching ratio, the stretching rate had less influence on the membrane structure and performance. In general, as the stretching ratio was 50% and the stretching rate was 20 mm/min, the tensile strength was increased by 36% to 7.47 MPa, and the pure water flux was as high as 776.28 L/(m2·h·0.1bar), while the mean pore size was not changed significantly. This research proved that the room temperature stretching and subsequent annealing was a simple but effective method for regulating the structure and the performance of the PVDF porous membranes.
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Fang C, Rajabzadeh S, Wu HC, Zhang X, Kato N, Kunimatsu M, Yoshioka T, Matsuyama H. Effect of mass transfer at the interface of the polymer solution and extruded solvent during the air gap on membrane structures and performances in TIPS process using triple-orifice spinneret. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117513] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Mei X, Lu L, Xie Y, Wang W, Tang Y, Teh KS. An ultra-thin carbon-fabric/graphene/poly(vinylidene fluoride) film for enhanced electromagnetic interference shielding. NANOSCALE 2019; 11:13587-13599. [PMID: 31290898 DOI: 10.1039/c9nr03603b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Highly conductive carbon-based fibrous composites have become one of the most sought-after components in the field of electromagnetic interference (EMI) shielding due to their excellent comprehensive performance. In this work, a flexible nonwoven fabric consisting of carbon fibers (CFs) and polypropylene/polyethylene (PP/PE) core/sheath bicomponent fibers (ESFs), known as CEF-NF, is introduced into the graphene (GE)/poly(vinylidene fluoride) (PVDF) nanocomposite obtained by a solution casting method to fabricate a CEF-NF/GE/PVDF film. Disparate microstructures can be clearly observed in CEF-NF/GE/PVDF films with different graphene contents. Thanks to an internal porous network structure formed when the graphene content is high, this film exhibits better electrical conductivity. In the frequency range of 30-1500 MHz, this film can achieve a significantly high EMI shielding effectiveness (EMI-SE) value of about 48.5 dB at tiny thickness and density (1731.40 dB cm2 g-1), which are far better than many competitive materials. Moreover, this film exhibits adequate tensile strength and excellent flexibility, as the film's structural form can be retained even after multiple folding processes. In addition, by combining two-dimensional (2D) graphene and one-dimensional (1D) CF, the CEF-NF/GE/PVDF film achieves a remarkable in-plane thermal conductivity of 25.702 W m-1 K-1, making it an exceptional heat conductor. In summary, our results demonstrate that CEF-NF/GE/PVDF film is an excellent EMI shielding material that is light weight, highly flexible, and mechanically robust with outstanding thermal conductivity, which positions it superbly for applications in next-generation commercial portable electronics.
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Affiliation(s)
- Xiaokang Mei
- School of Mechanical & Automotive Engineering, South China University of Technology, 381#Wushan Road, Guangzhou, 510641, China.
| | - Longsheng Lu
- School of Mechanical & Automotive Engineering, South China University of Technology, 381#Wushan Road, Guangzhou, 510641, China.
| | - Yingxi Xie
- School of Mechanical & Automotive Engineering, South China University of Technology, 381#Wushan Road, Guangzhou, 510641, China.
| | - Wentao Wang
- School of Mechanical & Automotive Engineering, South China University of Technology, 381#Wushan Road, Guangzhou, 510641, China.
| | - Yong Tang
- School of Mechanical & Automotive Engineering, South China University of Technology, 381#Wushan Road, Guangzhou, 510641, China.
| | - Kwok Siong Teh
- School of Engineering, San Francisco State University, San Francisco, CA 94132, USA
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10
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Jin YT, Hu D, Lin YK, Shi L. Hydrophilic modification of polyvinylidene fluoride membrane by blending amphiphilic copolymer via thermally induced phase separation. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4449] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yu-tao Jin
- The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
- Beijing Scinor Membrane Technology Co., Ltd; Beijing 100083 People's Republic of China
| | - Dan Hu
- Beijing Key Laboratory of Membrane Materials and Engineering, Department of Chemical Engineering; Tsinghua University; Beijing 100084 People's Republic of China
| | - Ya-kai Lin
- Beijing Scinor Membrane Technology Co., Ltd; Beijing 100083 People's Republic of China
| | - Ling Shi
- The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
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11
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Yu Y, Wu QY, Liang HQ, Gu L, Xu ZK. Preparation and characterization of cellulose triacetate membranes via thermally induced phase separation. J Appl Polym Sci 2016. [DOI: 10.1002/app.44454] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yuan Yu
- Department of Polymer Science and Engineering, Faculty of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 People's Republic of China
| | - Qing-Yun Wu
- Department of Polymer Science and Engineering, Faculty of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 People's Republic of China
| | - Hong-Qing Liang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Lin Gu
- Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; People's Republic of China
| | - Zhi-Kang Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
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12
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Understanding the non-solvent induced phase separation (NIPS) effect during the fabrication of microporous PVDF membranes via thermally induced phase separation (TIPS). J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.04.069] [Citation(s) in RCA: 247] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Formation of microporous polymeric membranes via thermally induced phase separation: A review. Front Chem Sci Eng 2016. [DOI: 10.1007/s11705-016-1561-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Xiao T, Wang P, Yang X, Cai X, Lu J. Fabrication and characterization of novel asymmetric polyvinylidene fluoride (PVDF) membranes by the nonsolvent thermally induced phase separation (NTIPS) method for membrane distillation applications. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.03.081] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Ma W, Cao Y, Gong F, Liu C, Tao G, Wang X. Poly(vinylidene fluoride) membranes prepared via nonsolvent induced phase separation combined with the gelation. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.04.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Zhou B, Tang Y, Li Q, Lin Y, Yu M, Xiong Y, Wang X. Preparation of polypropylene microfiltration membranes via thermally induced (solid-liquid or liquid-liquid) phase separation method. J Appl Polym Sci 2015. [DOI: 10.1002/app.42490] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bo Zhou
- Beijing Key Laboratory of Membrane Materials and Engineering; Department of Chemical Engineering; Tsinghua University; Beijing 10084 People's Republic of China
| | - Yuanhui Tang
- Beijing Key Laboratory of Membrane Materials and Engineering; Department of Chemical Engineering; Tsinghua University; Beijing 10084 People's Republic of China
| | - Qian Li
- Beijing Key Laboratory of Membrane Materials and Engineering; Department of Chemical Engineering; Tsinghua University; Beijing 10084 People's Republic of China
| | - Yakai Lin
- Beijing Key Laboratory of Membrane Materials and Engineering; Department of Chemical Engineering; Tsinghua University; Beijing 10084 People's Republic of China
| | - Miao Yu
- Beijing Key Laboratory of Membrane Materials and Engineering; Department of Chemical Engineering; Tsinghua University; Beijing 10084 People's Republic of China
| | - Yan Xiong
- Beijing Key Laboratory of Membrane Materials and Engineering; Department of Chemical Engineering; Tsinghua University; Beijing 10084 People's Republic of China
| | - Xiaolin Wang
- Beijing Key Laboratory of Membrane Materials and Engineering; Department of Chemical Engineering; Tsinghua University; Beijing 10084 People's Republic of China
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17
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Wang Z, Yu W, Zhou C. Preparation of polyethylene microporous membranes with high water permeability from thermally induced multiple phase transitions. POLYMER 2015. [DOI: 10.1016/j.polymer.2014.11.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Ma W, Yuan H, Wang X. The effect of chain structures on the crystallization behavior and membrane formation of poly(vinylidene fluoride) copolymers. MEMBRANES 2014; 4:243-56. [PMID: 24957175 PMCID: PMC4085623 DOI: 10.3390/membranes4020243] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 04/23/2014] [Accepted: 05/13/2014] [Indexed: 11/16/2022]
Abstract
The crystallization behaviors of two copolymers of PVDF were studied, and the effect of copolymerized chains on the crystallization behavior was investigated. The results indicated that both copolymers had a lowered crystallization temperature and crystallinity. The crystallization rate was improved by the copolymer with symmetrical units in PVDF chains, but hindered by asymmetrical units, compared with the neat PVDF. The symmetrical units in PVDF chains favored the β-crystals with fiber-like structures. According to the solubility parameter rule, methyl salicylate (MS) can be chosen as a diluent for PVDF copolymers. Both diluted systems had liquid-liquid (L-L) regions in the phase diagrams, which was due to the lowered crystallization temperature.
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Affiliation(s)
- Wenzhong Ma
- Beijing Key Laboratory of Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 1 Tsinghuayuan, Beijing 100084, China.
| | - Haoge Yuan
- Beijing Key Laboratory of Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 1 Tsinghuayuan, Beijing 100084, China.
| | - Xiaolin Wang
- Beijing Key Laboratory of Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 1 Tsinghuayuan, Beijing 100084, China.
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19
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Zhang C, Xia Y, Zuo K, Zeng YP. The effect of silica addition on the microstructure and properties of polyethylene separators prepared by thermally induced phase separation. J Appl Polym Sci 2014. [DOI: 10.1002/app.40724] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chunjiang Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Shanghai 200050 China
- Graduate School of Chinese Academy of Sciences; Beijing 100039 China
| | - Yongfeng Xia
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Shanghai 200050 China
| | - Kaihui Zuo
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Shanghai 200050 China
| | - Yu-Ping Zeng
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Shanghai 200050 China
- Graduate School of Chinese Academy of Sciences; Beijing 100039 China
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