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Cheng X, Bae J. Recent Advancements in Fabrication, Separation, and Purification of Hierarchically Porous Polymer Membranes and Their Applications in Next-Generation Electrochemical Energy Storage Devices. Polymers (Basel) 2024; 16:3269. [PMID: 39684015 DOI: 10.3390/polym16233269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2024] [Revised: 11/18/2024] [Accepted: 11/20/2024] [Indexed: 12/18/2024] Open
Abstract
In recent years, hierarchically porous polymer membranes (HPPMs) have emerged as promising materials for a wide range of applications, including filtration, separation, and energy storage. These membranes are distinguished by their multiscale porous structures, comprising macro-, meso-, and micropores. The multiscale structure enables optimizing the fluid dynamics and maximizing the surface areas, thereby improving the membrane performance. Advances in fabrication techniques such as electrospinning, phase separation, and templating have contributed to achieving precise control over pore size and distribution, enabling the creation of membranes with properties tailored to specific uses. In filtration systems, these membranes offer high selectivity and permeability, making them highly effective for the removal of contaminants in environmental and industrial processes. In electrochemical energy storage systems, the porous membrane architecture enhances ion transport and charge storage capabilities, leading to improved performance in batteries and supercapacitors. This review highlights the recent advances in the preparation methods for hierarchically porous structures and their progress in electrochemical energy storage applications. It offers valuable insights and references for future research in this field.
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Affiliation(s)
- Xiong Cheng
- Department of Physics, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of Korea
| | - Joonho Bae
- Department of Physics, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of Korea
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2
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Zhang L, Chai W, Zhang J, Chen Z, Yue Z, Wang J, Yu J. Switchable surface and loading/release of target molecules in hierarchically porous PLA nonwovens based on shape memory effect. RSC Adv 2024; 14:6199-6204. [PMID: 38375019 PMCID: PMC10875605 DOI: 10.1039/d3ra08411f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 02/09/2024] [Indexed: 02/21/2024] Open
Abstract
In this work, hierarchically porous PLA (polylactic acid) shape memory nonwovens were prepared by electrospinning its blend solution with PEO (polyethylene oxide) and subsequent water etching. Based on shape memory effect resulting from tiny crystals and the amorphous matrix of PLA, the switch between compact and porous surfaces has been achieved via cyclical hot-pressing and recovery in a hot water bath. After hot-pressing, the disappearance of hierarchical pores contributes to compact surface, enabling embedding of the target molecule in PLA nonwoven (i.e., CLOSE state). Upon exposure to heat, PLA nonwoven recovers to its permanent shape and exhibits a porous surface, providing a penetrative diffusion pathway for small molecules (i.e., OPEN state). The hierarchically porous structure and shape memory effect endow PLA nonwoven with the capability of rapid release. Our results provide a good candidate for some potential applications, such as temperature-controlled quick-release of catalysts and drugs.
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Affiliation(s)
- Lishuo Zhang
- College of Safety Science and Engineering, Liaoning Technical University Huludao 125105 China
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University Hangzhou 311121 China
| | - Wenqiang Chai
- Tongxiang Jianmin Filter Material Product Co. LTD. 314511 Jiaxing China
| | - Jiaru Zhang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University Hangzhou 311121 China
| | - Zhouli Chen
- Zhejiang Institute of Mechanical & Electrical Engineering Hangzhou 311203 China
| | - Ziyang Yue
- College of Science, Liaoning Technical University Fuxin 123000 China
| | - Jiayao Wang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University Hangzhou 311121 China
| | - Jiankang Yu
- College of Safety Science and Engineering, Liaoning Technical University Huludao 125105 China
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3
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Synergism effect between internal and surface cubic-large-pores in the enhancement of separation performance in hierarchically porous membranes. POLYMER 2023. [DOI: 10.1016/j.polymer.2022.125601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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4
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Wang J, Shen J, Shi J, Li Y, You J, Bian F. Crystallization-templated high-performance PVDF separator used in lithium-ion batteries. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2023.121359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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5
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Shi J, Zhou J, Fan D, Lin T, Wang J, Zhao J, Ronen A, Li M, You J. Enhanced Separation Performance of Hierarchically Porous Membranes Fabricated via the Combination of Crystallization Template and Foaming. Polymers (Basel) 2022; 14:5160. [PMID: 36501557 PMCID: PMC9736639 DOI: 10.3390/polym14235160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/16/2022] [Accepted: 11/18/2022] [Indexed: 11/30/2022] Open
Abstract
In this work, poly (vinylidene fluoride) (PVDF) hierarchically porous membranes (HPMs) with isolated large pores and continuous narrow nano-pores have been fabricated from its blend with poly (methyl methacrylate) (PMMA) based on the combination of crystallization template with chemical or supercritical CO2 foaming. On the one hand, the decomposition of azodicarbonamide (ADC, chemical foaming agent) or the release of CO2 can produce isolated large pores. On the other hand, PMMA is expelled during the isothermal crystallization of PVDF in their miscible blend, yielding narrow nano-pores upon etching with a selective solvent. In the case of supercritical CO2, the attained PVDF HPMs fail to improve separation performance because of the compact wall of isolated-large-pore and consequent poor connectivity of hierarchical pores. In the case of ADC, the optimal HPM exhibits much higher flux (up to 20 times) without any loss of selectivity compared with the reference only with nano-pores. The enhanced permeability can be attributed to the shorter diffusion length and lower diffusion barrier from isolated large pores, while the comparable selectivity is determined by narrow nano-pores in THE matrix.
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Affiliation(s)
- Jiahui Shi
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiahai Zhou
- Zhejiang Chuanhua Chemical Group Co., Ltd., Hangzhou 311215, China
| | - Donglei Fan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Taotao Lin
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiayao Wang
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiaqi Zhao
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Avner Ronen
- Jacob Blaustein Inst Desert Res, Zuckerberg Inst Water Res, Sede Boqer Campus, Ben Gurion Univ Negev, Beer Sheva IL-84990, Israel
| | - Minggang Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jichun You
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
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6
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Inclusion/Exclusion Behaviors of Small Molecules during Crystallization of Polymers in Miscible PLLA/TAIC Blend. Polymers (Basel) 2022; 14:polym14132737. [PMID: 35808781 PMCID: PMC9269167 DOI: 10.3390/polym14132737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/15/2022] [Accepted: 06/29/2022] [Indexed: 11/29/2022] Open
Abstract
In this work, PLLA/TAIC has been taken as a model system to investigate the inclusion and exclusion of small molecules during the crystallization of polymers in their miscible blend. Our results indicate that it is the growth rate and diameter of PLLA spherulites that dominate the localization of TAIC. On the one hand, crystallization temperature plays an important role. Crystallization at higher temperature corresponds to higher growth rates and a greater diameter of PLLA spherulites. The former improves the ability of PLLA crystals to trap TAIC while the latter leads to a lower volume fraction of space among neighboring PLLA spherulites. The combination of the two contributes to the enhanced inclusion behaviors. On the other hand, when compared to melt crystallization, cold crystallization results in much smaller spherulites (from higher nucleation density) and sufficient space among spherulites, which accounts for the enrichment of TAIC in interspherulitic regions and for its enhanced exclusion. In the adopted polymer–small molecule blend, TAIC can enrich in interspherulitic regions even in its miscible blend with PLLA, which can be attributed to its stronger diffusion ability.
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Hierarchically porous membranes with multiple channels: Fabrications in PVDF/PMMA/PLLA blend and enhanced separation performance. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120065] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Zhao J, Zhang L, Cheng X, Wang J, Li Y, You J. Programmable Transition between Adhesive/Anti-Adhesive Performances on Porous PVDF Spheres Supported by Shape Memory PLLA. Polymers (Basel) 2022; 14:polym14030374. [PMID: 35160365 PMCID: PMC8839783 DOI: 10.3390/polym14030374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 01/07/2022] [Accepted: 01/13/2022] [Indexed: 02/05/2023] Open
Abstract
Superhydrophobic surfaces with switchable adhesive/anti-adhesive performances are highly desired but still challenging. Herein, by loading porous poly (vinylidene fluoride) (PVDF) spheres on a shape memory polylactic acid (PLLA) film, a quasi-superhydrophobic surface of composite film (PVDF@PLLA) with the ability to tailor its surface structures/composition and related adhesive behaviors was fabricated. The as-prepared surface is covered by porous PVDF spheres. The combination of hydrophobicity of PVDF and hierarchical roughness resulted from porous spheres contributing to the high contact angle and low sliding angle, corresponding to Cassie state and lotus leaves effect. Upon uniaxial or biaxial tension, the distance among hydrophobic spheres is so high that more and more hydrophilic defects (PLLA film) have been exposed to water droplets, accounting for the quasi-superhydrophobic surface with a higher sliding angle. This is the reason for the Wenzel state and rose petals effect. After heating, PLLA film recovers to its original state. The porous PVDF spheres cover the whole film again, leading to the enhanced mobility of water droplets on the surface. The transition between the rose petals effect and the lotus leaves effect is programmable and reversible. Our result provides a novel strategy to tailor adhesive behaviors by combining (quasi-)superhydrophobic surface with shape memory effect.
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Effect of PMMA Molecular Weight on Its Localization during Crystallization of PVDF in Their Blends. Polymers (Basel) 2021; 13:polym13234138. [PMID: 34883641 PMCID: PMC8659426 DOI: 10.3390/polym13234138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/11/2021] [Accepted: 11/14/2021] [Indexed: 11/16/2022] Open
Abstract
In miscible crystalline/amorphous polymer blends, the exclusion behaviors of the latter with various molecular weights during the crystallization of the former were investigated by the combination of SAXS and DSC by taking a PVDF/PMMA blend as an example. The ratio between internal crystallinity from SAXS and overall crystallinity of the entire blend from DSC was employed to characterize the exclusion of PMMA. Our results indicate that the molecular weight of the amorphous component produces a remarkable influence on the diffusion coefficient (D) and the crystal growth rate (G) of the crystalline component. There are both inter-lamellar and inter-fibrillar structures when PVDF blended with lower-molecular-weight PMMA. With increasing molecular weight of PMMA, the decrease in crystal growth rate (G) dominates the enhanced exclusion behaviors of PMMA, resulting in bigger pores after extraction. Our results are significant not only for the basic understanding of crystallization in polymer blends, but also for the fabrication and structure control of porous structures based on crystallization templates.
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Shirahase T, Akasaka S, Asai S. Organic solvent-free fabrication of mesoporous polymer monolith from miscible PLLA/PMMA blend. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122742] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wang J, Ding M, Cheng X, Ye C, Li F, Li Y, You J. Hierarchically porous membranes with isolated-round-pores connected by narrow-nanopores: A novel solution for trade-off effect in separation. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118040] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Yang Y, Wu G, Ding C, Zhang Y, Yang W, Yang M. Formation of oriented β‐transcrystals induced by self‐assembly of nucleating agent and its micropores formation during uniaxial stretching. POLYMER CRYSTALLIZATION 2020. [DOI: 10.1002/pcr2.10129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yu Yang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Gao‐Gao Wu
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Chao Ding
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Ya Zhang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Wei Yang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Ming‐Bo Yang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
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Ye C, Cao X, Wang H, Wang J, Wang T, Wang Z, Li Y, You J. Inter‐spherulitic/inner‐spherulitic localization of
PBSU
during crystallization of
PVDF
in
PVDF
/
PBSU
blend. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20190232] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Cuicui Ye
- College of Material, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou People's Republic of China
| | - Xiaojun Cao
- College of Material, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou People's Republic of China
| | - Hengti Wang
- College of Material, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou People's Republic of China
| | - Jiayao Wang
- College of Material, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou People's Republic of China
| | - Tao Wang
- College of Material, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou People's Republic of China
| | - Zongbao Wang
- School of Material Science and Chemical EngineeringNingbo University Ningbo People's Republic of China
| | - Yongjin Li
- College of Material, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou People's Republic of China
| | - Jichun You
- College of Material, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou People's Republic of China
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Multiple-Step Melting/Irradiation: A Strategy to Fabricate Thermoplastic Polymers with Improved Mechanical Performance. Polymers (Basel) 2019; 11:polym11111812. [PMID: 31694160 PMCID: PMC6918411 DOI: 10.3390/polym11111812] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 10/29/2019] [Accepted: 10/29/2019] [Indexed: 01/23/2023] Open
Abstract
To fabricate thermoplastic polymers exhibiting improved ductility without the loss of strength, a novel multiple-step melting/irradiation (MUSMI) strategy was developed by taking poly(vinylidene fluoride)/triallyl isocyanate (PVDF/TAIC) as an example, in which alternate melting and irradiation were adopted and repeated for several times. The initial irradiation with a low dose produced some local crosslinked points (not 3-dimensional network). When the specimen was reheated above the melting temperature, they redistributed in the PVDF matrix, which is an efficient way to avoid the high crosslinking density at certain positions and the disappearance of thermoplastic properties. During the subsequent cooling process, the crosslinked domains in the thermoplastic polymer matrix is expected to play double roles in turning crystal structures for enhancing the ductility without reducing strength. On one hand, they can act as heterogeneous nucleation agents, resulting in higher nucleation density and smaller spherulites; on the other hand, the existence of crosslinked structures restricts the lamellar thickening, accounting for the thinner crystal lamellae. Both smaller spherulites and thinner lamellae contribute to better ductility. At the same time, these local crosslinked points enhance the connectivity of crystal structures (including lamellae and spherulites), which is beneficial to the improvement of strength. Based on the influence of local crosslinked points on the ductility and strength, thermoplastic PVDF with much higher elongation at break and comparable yielding stress (relative to the reference specimen upon strong irradiation only once) was prepared via MUSMI successfully.
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Wu GG, Chen WB, Ding C, Xu LY, Liu ZY, Yang W, Yang MB. Pore formation mechanism of oriented β polypropylene cast films during stretching and optimization of stretching methods: In-situ SAXS and WAXD studies. POLYMER 2019. [DOI: 10.1016/j.polymer.2018.12.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Gravity-driven ultrafast separation of water-in-oil emulsion by hierarchically porous electrospun Poly(L-lactide) fabrics. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.06.053] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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