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Guo Y, Li Y, Chen Y, Ali A, Yao S. A New Capillary-Channel Agarose Sponge Assembled with Deep Eutectic Solvent Based Magnetic Fluid for Rapid Hemostasis and Prevention of Bacterial Infection. ACS APPLIED MATERIALS & INTERFACES 2024; 16:30874-30889. [PMID: 38856922 DOI: 10.1021/acsami.4c04879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
A new composite sponge assisted by magnetic field-mediated guidance was developed for effective hemostasis. It was based on polydopamine capillary-channel agarose (PDA-CAGA) sponge as matrix; meanwhile, the combination of deep eutectic solvent (DES, choline chloride:glycerol = 1:1, M/M)-dispersed Fe3O4 nanoparticles after fabrication by tannic acid (DES-Fe3O4@TA) was applied as hemostatic magnetic fluid. This sponge had oriented and aligned capillary channels realized by a 3D printed pattern, which endowed them with obvious shape memory and liquid absorption performance. Computational simulation was performed to describe the fluid status in channels; DES-Fe3O4@TA exhibited good magnetic properties, fluidity, and stability. In addition, the sponge driven to react rapidly with the bleeding site under the effect of a magnetic field presented a shorter hemostasis time (reduced by 85.02% in the tail and 81.07% in the liver of rats) and less blood loss (reduced by 97.08% in the tail and 91.50% in the liver) than those of medical gelatin sponge (GS). Meanwhile, the multifunctional material also exhibited better biocompatibility, procoagulant performance, and significant inhibition on S. aureus and E. coli than GS. As a whole, this work proposed a new strategy for rapid hemostasis by designing a magnetic field assisted composite bacteriostatic material, which also expanded the applications of green solvents in the clinical management field.
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Affiliation(s)
- Yingying Guo
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, China
| | - Yueshan Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yu Chen
- South Sichuan Institute of Translational Medicine, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Ahmad Ali
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Shun Yao
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
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2
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Jia Y, Guan K, Mai Z, Fang S, Li Z, Zhang P, Zou D, Jiang X, He G, Matsuyama H. Thin continuous membrane coating with high surface energy for comprehensive antifouling seawater distillation. WATER RESEARCH 2023; 244:120439. [PMID: 37579566 DOI: 10.1016/j.watres.2023.120439] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/16/2023]
Abstract
Membrane distillation (MD) has prominent advantages such as treating high-salinity wastewater with a low-grade thermal energy, high salt rejection, and zero discharge. However, organic fouling and mineral scaling are two major challenges for hydrophobic MD membranes when used for practical applications. Commonly, improving organic fouling- and mineral scaling-resistance require oppositely enhanced wetting properties of membrane, thus is difficult to simultaneously realize dual resistance with one membrane. Here, we proposed to use underwater thermodynamically stable high-surface-energy coating to modify the hydrophobic membrane with Janus structures comprising different surface energy. The underlayered structure meets the hydrophobicity requirements of the MD membrane, while the coating layer realizes dual resistance to organic and inorganic foulants. Theoretical analysis and experimental proof reveal that the membrane with the high-surface-energy coating layer outperforms the pristine one with approximately 10 times of longevity. This strategy provides a new way for the use of high-surface-energy materials in versatilely fouling-resistant MD process.
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Affiliation(s)
- Yuandong Jia
- Research Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan; Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan; State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
| | - Kecheng Guan
- Research Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan.
| | - Zhaohuan Mai
- Research Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan.
| | - Shang Fang
- Research Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan; Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan
| | - Zhan Li
- Research Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan
| | - Pengfei Zhang
- Research Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan
| | - Dong Zou
- School of Environmental Science and Engineering, Nanjing Tech University, No.30 South Puzhu Road, Nanjing 211816, China
| | - Xiaobin Jiang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
| | - Gaohong He
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
| | - Hideto Matsuyama
- Research Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan; Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan.
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3
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Jiang X, Koike R. Numerical Study of the Effect of High Gravity in Material Extrusion System and Polymer Characteristics during Filament Fabrication. Polymers (Basel) 2023; 15:3037. [PMID: 37514426 PMCID: PMC10385754 DOI: 10.3390/polym15143037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/11/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Polymer science plays a crucial role in the understanding and numerical study of material extrusion processes that have revolutionized additive manufacturing (AM). This study investigated the impact of high-gravity conditions on material extrusion and conducted a numerical study by referring to the development of a high-gravity material extrusion system (HG-MEX). In this study, we evaluated the polymeric characteristics of HG-MEX. By analyzing the interplay between polymer behavior and gravity, we provide insights into the effects of high gravity on extrusion processes, including filament flow, material deposition, and the resulting fabrication characteristics. The established numerical study of high-gravity material extrusion in additive manufacturing is a meaningful and valuable approach for improving the quality and efficiency of the process. This study is unique in that it incorporates material surface characteristics to represent the performance and contact with polymer science in additive manufacturing. The findings presented herein contribute to a broader understanding of polymer science and its practical implications for HG-MEX under various gravitational conditions.
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Affiliation(s)
- Xin Jiang
- Research and Development Department, Kanagawa Institute of Industrial Science and Technology, 705-1 Shimoimaizumi, Ebina 243-0435, Kanagawa, Japan
- Department of System Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Kanagawa, Japan
| | - Ryo Koike
- Department of System Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Kanagawa, Japan
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Scalable and switchable CO 2-responsive membranes with high wettability for separation of various oil/water systems. Nat Commun 2023; 14:1108. [PMID: 36849553 PMCID: PMC9970982 DOI: 10.1038/s41467-023-36685-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 02/13/2023] [Indexed: 03/01/2023] Open
Abstract
Smart membranes with responsive wettability show promise for controllably separating oil/water mixtures, including immiscible oil-water mixtures and surfactant-stabilized oil/water emulsions. However, the membranes are challenged by unsatisfactory external stimuli, inadequate wettability responsiveness, difficulty in scalability and poor self-cleaning performance. Here, we develop a capillary force-driven confinement self-assembling strategy to construct a scalable and stable CO2-responsive membrane for the smart separation of various oil/water systems. In this process, the CO2-responsive copolymer can homogeneously adhere to the membrane surface by manipulating the capillary force, generating a membrane with a large area up to 3600 cm2 and excellent switching wettability between high hydrophobicity/underwater superoleophilicity and superhydrophilicity/underwater superoleophobicity under CO2/N2 stimulation. The membrane can be applied to various oil/water systems, including immiscible mixtures, surfactant-stabilized emulsions, multiphase emulsions and pollutant-containing emulsions, demonstrating high separation efficiency (>99.9%), recyclability, and self-cleaning performance. Due to robust separation properties coupled with the excellent scalability, the membrane shows great implications for smart liquid separation.
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5
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Identification of Implicit Dynamics of Supercritical CO2 Invasion in Sub-Regions of Bench Micromodels. J Supercrit Fluids 2023. [DOI: 10.1016/j.supflu.2023.105863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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6
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Li D, Wang M, Rong W, Yang L, Xu D, Zhang Y. Study on the Manipulation Strategy of Metallic Microstructures Based on Electrochemical-Assisted Method. MICROMACHINES 2022; 13:mi13122151. [PMID: 36557450 PMCID: PMC9782056 DOI: 10.3390/mi13122151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/16/2022] [Accepted: 11/22/2022] [Indexed: 05/29/2023]
Abstract
Microcomponent manipulation (MCM) technology plays a decisive role in assembling complex systems at the micro- and nanoscale. However, the existing micromanipulation methods are difficult to widely apply in the manufacturing of microelectromechanical systems (MEMSs) due to the limited manipulation space and complex application objects, and the manipulation efficiency is relatively low, which makes it difficult to industrialize these micromanipulating systems. To solve the above problems, this paper proposes an efficient metal MCM strategy based on the electrochemical method. To verify the feasibility and repeatability of the strategy, the finite element model (FEM) incorporating the hydrodynamic and electrochemical theories is used to calculate the local stress distribution of the contact position during the dynamic pick-up process. Based on the simulation results, we defined the relationship between the parameters, such as the optimal manipulating position and angle for picking, transferring and releasing. The failure behaviors of pick-up are built to realize the efficient three-dimensional manipulation of microcopper wire of 300 μm. By establishing a theoretical model and experimental verification, it was concluded that the middle point was the best manipulating position when picking up the microcopper wire, the most efficient picking angle was between 45 and 60 degrees for the pipette, and the average time was 480 s in three sets of picking-release manipulation experiments. This paper provides an achievable idea for different types of micro-object manipulations and promotes the rapid application of micromanipulation techniques in MEMSs.
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Affiliation(s)
- Dongjie Li
- Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education, School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
- Heilongjiang Key Laboratory of Complex Intelligent System and Integration, School of Automation, Harbin University of Science and Technology, Harbin 150080, China
| | - Mingrui Wang
- Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education, School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
- Heilongjiang Key Laboratory of Complex Intelligent System and Integration, School of Automation, Harbin University of Science and Technology, Harbin 150080, China
| | - Weibin Rong
- State Key Laboratory of Robotics and System, School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Liu Yang
- Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education, School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
- Heilongjiang Key Laboratory of Complex Intelligent System and Integration, School of Automation, Harbin University of Science and Technology, Harbin 150080, China
| | - Donghao Xu
- Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education, School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
- Heilongjiang Key Laboratory of Complex Intelligent System and Integration, School of Automation, Harbin University of Science and Technology, Harbin 150080, China
| | - Yu Zhang
- Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education, School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
- Heilongjiang Key Laboratory of Complex Intelligent System and Integration, School of Automation, Harbin University of Science and Technology, Harbin 150080, China
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7
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Feng D, Li X, Wang Z. Comparison of omniphobic membranes and Janus membranes with a dense hydrophilic surface layer for robust membrane distillation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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8
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Huang S, Colosqui CE, Young YN, Stone HA. The effects of surface hydration on capillary adhesion under nanoscale confinement. SOFT MATTER 2022; 18:4786-4791. [PMID: 35708007 DOI: 10.1039/d2sm00473a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nanoscale phenomena such as surface hydration and the molecular layering of liquids under strong nanoscale confinement play a critical role in liquid-mediated surface adhesion that is not accounted for by available models, which assume a uniform liquid density with or without considering surface forces and associated disjoining pressure effects. This work introduces an alternative theoretical description that via the potential of mean force (PMF) considers the strong spatial variation of the liquid number density under nanoscale confinement. This alternative description based on the PMF predicts a dual effect of surface hydration by producing: (i) strong spatial oscillations of the local liquid density and pressure and, more importantly, (ii) a configuration-dependent liquid-solid surface energy under nanoscale confinement. Theoretical analysis and molecular dynamics simulations for the case of an axisymmetric water bridge with nanoscale heights show that the latter hydration effect is critical for the accurate prediction of the surface energy and adhesion forces when a small volume of liquid is nanoscopically confined by two surfaces approaching contact.
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Affiliation(s)
- Sijia Huang
- Applied Mathematics & Statistics Department, Stony Brook University, Stony Brook, NY 11794, USA
| | - Carlos E Colosqui
- Applied Mathematics & Statistics Department, Stony Brook University, Stony Brook, NY 11794, USA
- Mechanical Engineering Department, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Y-N Young
- Department of Mathematical Sciences, New Jersey Institute of Technology, Newark, NJ 07102, USA
| | - Howard A Stone
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
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9
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Mo J, Wang C, Zeng J, Sha J, Li Z, Chen Y. Directional passive transport of nanodroplets on general axisymmetric surfaces. Phys Chem Chem Phys 2022; 24:9727-9734. [PMID: 35412533 DOI: 10.1039/d1cp05905j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Rapid removal of small-sized droplets passively using fixed structures is a key challenge for various applications including anti-icing, rapid cooling, and water harvesting. In this work, we investigate the directional motion of nanodroplets on axisymmetric surfaces with curvature gradient through molecular dynamics (MD) simulations. It is found that as the shape of the axisymmetric surface is changed from a dome to a trumpet, the droplet velocity is greatly enhanced, by a factor of ∼14. Such an increase is mainly caused by the increment in the driving force. The droplet velocity changes nonlinearly as the surface wettability is varied and assumes the maximum at the contact angle of ∼75°. We derive a formula for the driving force of nanodroplets on general axisymmetric surfaces by evaluating the pressure gradient inside the droplet induced by the curvature gradient. Molecular dynamics simulations are performed to directly measure the driving force and confirm that the theoretical formula works well. By illustrating the reduced initial velocity of droplets as a function of a dimensionless number, which represents the ratio of the driving force to the retentive force due to contact angle hysteresis, we show that the onset of droplet motion on axisymmetric surfaces occurs when the dimensionless number is above a critical value. The dimensionless number reveals the effects of surface geometry, surface wettability, and droplet size on the droplet motion.
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Affiliation(s)
- Jingwen Mo
- Jiangsu Key Laboratory for Design & Manufacture of Micro/Nano Biomedical Instruments and School of Mechanical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Chen Wang
- Jiangsu Key Laboratory for Design & Manufacture of Micro/Nano Biomedical Instruments and School of Mechanical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Jiaying Zeng
- Jiangsu Key Laboratory for Design & Manufacture of Micro/Nano Biomedical Instruments and School of Mechanical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Jingjie Sha
- Jiangsu Key Laboratory for Design & Manufacture of Micro/Nano Biomedical Instruments and School of Mechanical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Zhigang Li
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Yunfei Chen
- Jiangsu Key Laboratory for Design & Manufacture of Micro/Nano Biomedical Instruments and School of Mechanical Engineering, Southeast University, Nanjing 210096, P. R. China.
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10
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Fu Q, Shi H, Zhou L, Li P, Wang R. Effects of ultrasound power on the properties of non‐salt chicken myofibrillar protein emulsions. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Qing‐quan Fu
- School of Food Science Nanjing Xiaozhuang University Nanjing Jiangsu 211171 China
| | - Hai‐bo Shi
- School of Food Science and Engineering South China University of Technology Guangzhou Guangdong 510641 China
| | - Lei Zhou
- College of Food Science and Technology Nanjing Agricultural University Nanjing 210095 China
- Key Laboratory of Meat Processing, Ministry of Agriculture Nanjing Agricultural University Nanjing 210095 China
- Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control Nanjing Agricultural University Nanjing 210095 China
| | - Pan‐pan Li
- School of Food Science Nanjing Xiaozhuang University Nanjing Jiangsu 211171 China
| | - Rong‐rong Wang
- School of Food Science Nanjing Xiaozhuang University Nanjing Jiangsu 211171 China
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11
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Zhao Z, Zhang Y, He H, Pan L, Yu D, Egun I, Wan J, Chen W, Fan HJ. Bamboo Weaving Inspired Design of a Carbonaceous Electrode with Exceptionally High Volumetric Capacity. NANO LETTERS 2022; 22:954-962. [PMID: 35080402 DOI: 10.1021/acs.nanolett.1c03765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A highly densified electrode material is desirable to achieve large volumetric capacity. However, pores acting as ion transport channels are critical for high utilization of active material. Achieving a balance between high volume density and pore utilization remains a challenge particularly for hollow materials. Herein, capillary force is employed to convert hollow fibers to a bamboo-weaving-like flexible electrode (BWFE), in which the shrinkage of hollow space results in high compactness of the electrode. The volume of the electrode can be decreased by 96% without sacrificing the gravimetric capacity. Importantly, the conductivity of BWFE after thermal treatment can reach up to 50,500 S/m which exceeds that for most other carbon materials. Detailed mechanical analysis reveals that, due to the strong interaction between nanoribbons, Young's modulus of the electrode increases by 105 times. After SnO2 active materials is impregnated, the BWFE/SnO2 electrode exhibits an exceptionally ultrahigh volumetric capacity of 2000 mAh/cm3.
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Affiliation(s)
- Zehua Zhao
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Yuting Zhang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Haiyong He
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Linhai Pan
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Dongdong Yu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Ishioma Egun
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Jia Wan
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Weilin Chen
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Hong Jin Fan
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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12
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Feng D, Chen Y, Wang Z, Lin S. Janus Membrane with a Dense Hydrophilic Surface Layer for Robust Fouling and Wetting Resistance in Membrane Distillation: New Insights into Wetting Resistance. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:14156-14164. [PMID: 34597031 DOI: 10.1021/acs.est.1c04443] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Although membrane distillation (MD) has been identified as a promising technology to treat hypersaline wastewaters, its practical applications face two prominent challenges: membrane wetting and fouling. Herein, we report a facile and scalable approach for fabricating a Janus MD membrane comprising a dense polyvinyl alcohol (PVA) surface layer and a hydrophobic polyvinylidene fluoride (PVDF) membrane substrate. By testing the Janus membrane in direct contact MD experiments using feeds containing a sodium dodecyl sulfate (SDS) surfactant or/and mineral oil, we demonstrated that the dense Janus membrane can simultaneously resist wetting and fouling. This method represents the simplest approach to date for fabricating MD membranes with simultaneous wetting and fouling resistance. Importantly, we also unveil the mechanism of wetting resistance by measuring the breakthrough pressure and surfactant permeation (through the PVA layer) and found that wetting resistance imparted by a dense hydrophilic layer is attributable to capillary pressure. This new insight will potentially change the paradigm of fabricating wetting-resistant membranes and enable robust applications of MD and other membrane contactor processes facing challenges of pore wetting or/and membrane fouling.
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Affiliation(s)
- Dejun Feng
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Yuanmiaoliang Chen
- NUS Graduate School for Integrative Science and Engineering, National University of Singapore, Singapore 119077, Singapore
| | - Zhangxin Wang
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watershed, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Shihong Lin
- Department of Civil and Environmental Engineering, Vanderbilt University, Nashville, Tennessee 37235-1831, United States
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235-1831, United States
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13
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Ultra-strong polymeric hollow fiber membranes for saline dewatering and desalination. Nat Commun 2021; 12:2338. [PMID: 33879779 PMCID: PMC8058345 DOI: 10.1038/s41467-021-22684-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 03/23/2021] [Indexed: 12/16/2022] Open
Abstract
Osmotically assisted reverse osmosis (OARO) has become an emerging membrane technology to tackle the limitations of a reverse osmosis (RO) process for water desalination. A strong membrane that can withstand a high hydraulic pressure is crucial for the OARO process. Here, we develop ultra-strong polymeric thin film composite (TFC) hollow fiber membranes with exceptionally high hydraulic burst pressures of up to 110 bar, while maintaining high pure water permeance of around 3 litre/(m2 h bar) and a NaCl rejection of about 98%. The ultra-strong TFC hollow fiber membranes are achieved mainly by tuning the concentration of the host polymer in spinning dopes and engineering the fiber dimension and morphology. The optimal TFC membranes display promising water permeance under the OR and OARO operation modes. This work may shed new light on the fabrication of ultra-strong TFC hollow fiber membranes for water treatments and desalination. Osmotically assisted reverse osmosis can overcome limitations of the reverse osmosis process but a strong membrane which can withstand a high hydraulic pressure is crucial. Here, the authors develop strong polymer thin film composite hollow fiber membranes with exceptionally high hydraulic burst pressures of up to 110 bar, while maintaining high water permeance and salt rejection.
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14
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Liu Y, Wei Y, Liu M, Bai Y, Wang X, Shang S, Du C, Gao W, Chen J, Liu Y. Face-to-Face Growth of Wafer-Scale 2D Semiconducting MOF Films on Dielectric Substrates. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2007741. [PMID: 33599039 DOI: 10.1002/adma.202007741] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/21/2020] [Indexed: 06/12/2023]
Abstract
The preparation of large-area 2D conductive metal-organic framework (MOF) films remains highly desirable but challenging. Here, inspired by the capillary phenomenon, a face-to-face confinement growth method to grow conductive 2D Cu2 (TCPP) (TCPP = meso-tetra(4-carboxyphenyl)porphine) MOF films on dielectric substrates is developed. Trace amounts of solutions containing low-concentration Cu2+ and TCPP are pumped cyclically into a micropore interface to produce this growth. The crystal structures are confirmed with various characterization techniques, which include high-resolution atomic force microscopy and cryogenic transmission electron microscopy (Cryo-TEM). The Cu2 (TCPP) MOF film exhibit an electrical conductivity of ≈0.007 S cm-1 , which is approximately four orders of magnitude higher than other carboxylic-acid-based MOF materials (10-6 S cm-1 ). Other wafer-scale conductive MOF films such as M3 (HHTP)2 (M = Cu, Co, and Ni; HHTP = 2,3,6,7,10,11-triphenylenehexol) can be produced utilizing this strategy and suggests this method has widescale applicability potential.
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Affiliation(s)
- Youxing Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yanan Wei
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Minghui Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yichao Bai
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xinyu Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Shengcong Shang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Changsheng Du
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wenqiang Gao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jianyi Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yunqi Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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15
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Chen W, Zhu P, Liang H, Wang W. Molecular Dynamics Simulations of Lubricant Recycling in Porous Polyimide Retainers of Bearing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:2426-2435. [PMID: 33560132 DOI: 10.1021/acs.langmuir.0c03468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Porous polyimide (PI) materials are one of important bearing retainer materials in space applications due to the storage and continuous supply of a lubricant through the porous structure. Understanding the lubricant recycling process in porous polyimide retainers is of vital importance to improve lubricant supply performance of bearing. In this work, through molecular dynamic simulations, coarse-grained models are built to study lubricant recycling processes on porous and solid surfaces. A spontaneous imbibition behavior is observed when the lubricant is present on the porous surface. The dynamic change in the contact angle in this process and the deviation of the effective radius from the volumetric radius because of the molecular structure of polyimide causes the classical Lucas-Washburn (L-W) equation fail to describe the process. By fitting dynamic contact angle and effective radius, a modified L-W equation is developed, which well predicts the process of imbibition. Furthermore, it is found that the lubricants between the porous polyimide surface and the solid surface are recycled by extrusion, and spontaneous imbibition does not occur. In this case, the accumulation of lubricant pressure and weak interfacial interaction between the lubricant and the solid surface are also the main factors that promote lubricant recycling.
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Affiliation(s)
- Wenbin Chen
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 10081, PR China
| | - Pengzhe Zhu
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 10081, PR China
| | - He Liang
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 10081, PR China
| | - Wenzhong Wang
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 10081, PR China
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16
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Wang L, Zhong Y, Qian C, Yang D, Nie J, Ma G. A natural polymer-based porous sponge with capillary-mimicking microchannels for rapid hemostasis. Acta Biomater 2020; 114:193-205. [PMID: 32717330 DOI: 10.1016/j.actbio.2020.07.043] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/09/2020] [Accepted: 07/21/2020] [Indexed: 02/06/2023]
Abstract
Natural polymer materials have attracted great attention in the field of hemostasis because of their wide range of source, nontoxicity, hydrophilicity, and air permeability. In the present study, two natural polymers composed of carboxymethyl chitosan (CMCS) and sodium carboxymethylcellulose (CMCNa) plus γ-(2,3-epoxypropoxy) propytrimethoxysilane (KH560) that serves as a crosslinking agent were selected to synthesize a capillary-mimicking composite hemostatic (CCK) sponge with a low density, interconnected microchannel architecture, suitable mechanical strength, high resilience, and ultrastrong liquid absorption capacity. The introduction of a large number of hydrophilic carboxymethyl functional groups and the design of capillary-mimicking structures formed by the ice segregation-induced self-assembly (ISISA) process endowed the CCK sponges with an ultrastrong liquid absorption capacity, which significantly enhanced the hemostatic ability of the materials. Both in vivo and in vitro hemostatic experiments confirmed the potential of the CCK sponges to achieve rapid hemostasis. Additionally, cytotoxicity and hemolysis assays showed that the CCK sponges exhibited good biocompatibility and hemocompatibility. The possible hemostatic mechanism was also discussed in this study. In conclusion, the capillary-mimicking hemostatic sponge exhibits a high potential to induce rapid hemostasis in prehospital emergency and clinical settings. STATEMENT OF SIGNIFICANCE: In the present study, an oriented composite hemostatic (CCK) sponge with a capillary-mimicking structure formed by the ice segregation-induced self-assembly (ISISA) process was designed and used to achieve rapid hemostasis. The unique aligned microchannel structure of the sponge exhibited an ultrastrong capillary-mimicking action and endowed the prepared CCK hemostatic sponge with a strong liquid absorption capacity. By changing the proportion of raw materials, we could modify the unique capillary-mimicking structure with aligned microchannels. Two natural polymer-based materials with abundant hydrophilic groups were chosen to prepare the CCK sponge to fully utilize the characteristics of this structure. The oriented natural polymer-based porous sponge with capillary-mimicking microchannels exhibited a strong hemostatic ability in both in vivo and in vitro tests. The results showed that the CCK sponge with the capillary-mimicking structure has a high potential to achieve rapid hemostasis.
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17
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Liu J, Li S, Liu L, Zhu Z. A fluorous biphase drug delivery system triggered by low frequency ultrasound: controlled release from perfluorous discoidal porous silicon particles. NANOSCALE ADVANCES 2020; 2:3561-3569. [PMID: 36134262 PMCID: PMC9419597 DOI: 10.1039/d0na00324g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 06/25/2020] [Indexed: 06/01/2023]
Abstract
Conventional drug delivery systems face unsatisfactory loading efficiency, poor biological bypass, and uncontrollable release, which are great barriers for improving the treatment of many diseases. Herein, a proof-of-concept of a fluorous biphase drug delivery system (FB-DDS) trigged by low frequency ultrasound (LFUS) is proposed for the first time, where promoted incorporation and stabilization of therapeutic agents in nanocarriers was achieved through fluorine-fluorine interactions, and the encapsulated drugs were controllably released by external sources, resulting in minimized nonspecific toxicity and enhanced therapeutic efficacy. The FB-DDS was constructed from monodisperse, discoidal porous silicon particles (PSP) and was functionalized with 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (FAS17) for loading perfluoropentane (PFP) and fluorinated drugs through fluorine-fluorine interactions. This delivery system was demonstrated by utilizing model compounds including a fluorous-tagged fluorescein and a fluorine containing antibiotic ciprofloxacin. Loading of the model molecules into fluorocarbon-coated carriers was facilitated by fluorous interactions, whereas ejection of the model molecules was promoted by applying LFUS to rapidly evaporate PFP. In the in vitro test, these carriers loaded with fluorine containing ciprofloxacin exhibited excellent antimicrobial activity against Pseudomonas aeruginosa biofilm formation. Overall, this innovative stimulus-responsive fluorous biphase drug delivery system will be a promising candidate for practical applications as well as encouraging further investigation of drug delivery and controlled release strategies.
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Affiliation(s)
- Jing Liu
- College of Materials Science and Engineering, Qingdao University of Science and Technology Qingdao Shandong China 266042
| | - Shuo Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology Qingdao Shandong China 266042
| | - Lina Liu
- College of Materials Science and Engineering, Qingdao University of Science and Technology Qingdao Shandong China 266042
| | - Zhiling Zhu
- College of Materials Science and Engineering, Qingdao University of Science and Technology Qingdao Shandong China 266042
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18
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Yin Q, Sun F, Wang X, Gao S, Zhang S, Qi J, Wang K, Qi D. Suppressing the Ring Stain Effect with Superhydrophilic/Superhydrophobic Patterned Surfaces. ACS OMEGA 2020; 5:11235-11240. [PMID: 32455248 PMCID: PMC7241024 DOI: 10.1021/acsomega.0c01568] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
The ring stain phenomenon is a critical hindrance to the distribution of the solute during drying for biochemical assays and materials deposition. Herein, we developed a substrate, characterized with hydrophilic spots surrounded by hydrophobic areas, to suppress the ring stain effect, and fabricated four kinds of patterned surfaces to investigate the relationship between the surface free energy and ring-suppressing performance. We found that during the evaporation process, a drop was constrained on the hydrophilic spot with a pinned contact line, and the ring stain effect was suppressed significantly. The suppressing performance of the ring stain effect increases with surface free energy differences between the hydrophilic and hydrophobic regions.
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Affiliation(s)
- Qiming Yin
- The
Experiment Center, Shandong University of
Traditional Chinese Medicine, Jinan 250355, China
| | - Fengzhi Sun
- Shandong
Cancer Hospital, Jinan 250117, China
| | - Xiaolong Wang
- The
Experiment Center, Shandong University of
Traditional Chinese Medicine, Jinan 250355, China
| | - Shijie Gao
- The
Experiment Center, Shandong University of
Traditional Chinese Medicine, Jinan 250355, China
| | - Shanyu Zhang
- The
Experiment Center, Shandong University of
Traditional Chinese Medicine, Jinan 250355, China
| | - Jianhong Qi
- The
Experiment Center, Shandong University of
Traditional Chinese Medicine, Jinan 250355, China
| | - Ke Wang
- The
Experiment Center, Shandong University of
Traditional Chinese Medicine, Jinan 250355, China
| | - Dongmei Qi
- The
Experiment Center, Shandong University of
Traditional Chinese Medicine, Jinan 250355, China
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19
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Marchio S, Meloni S, Giacomello A, Casciola CM. Wetting and recovery of nano-patterned surfaces beyond the classical picture. NANOSCALE 2019; 11:21458-21470. [PMID: 31686077 DOI: 10.1039/c9nr05105h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hydrophobic (nano)textured surfaces, also known as superhydrophobic surfaces, have a wide range of technological applications, including in the self-cleaning, anti-moisture, anti-icing, anti-fogging and friction/drag reduction fields, and many more. The accidental complete wetting of surface textures, which destroys superhydrophobicity, and the opposite process of recovery are two crucial processes that can prevent or enable the technological applications mentioned before. Understanding these processes is key to designing surfaces with tailored wetting and recovery properties. However, recent experiments have suggested that the currently available theories are insufficient for describing the observed phenomena. In this work we offer a dynamic picture of these processes beyond the state of the art showing that the key ingredient determining the experimental behavior is the inertia of the liquid in the wetting and dewetting processes, which is neglected in microscopic and macroscopic quasi-static theories inspired by the classical nucleation theory. The present findings are also important for other related phenomena, such as heterogeneous cavitation, where vapor/gas bubbles form at surface asperities, condensation, dynamics of the triple line, micelle formation, etc.
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Affiliation(s)
- Sara Marchio
- Dipartimento di Ingegneria Meccanica e Aerospaziale, Università di Roma Sapienza, Via Eudossiana 18, 00184 Roma, Italy.
| | - Simone Meloni
- Dipartimento di Ingegneria Meccanica e Aerospaziale, Università di Roma Sapienza, Via Eudossiana 18, 00184 Roma, Italy. and Dipartimento di Scienze Chimiche e Farmaceutiche (DipSCF), Universitá degli Studi di Ferrara (Unife), Via Luigi Borsari 46, I-44121, Ferrara, Italy.
| | - Alberto Giacomello
- Dipartimento di Ingegneria Meccanica e Aerospaziale, Università di Roma Sapienza, Via Eudossiana 18, 00184 Roma, Italy.
| | - Carlo Massimo Casciola
- Dipartimento di Ingegneria Meccanica e Aerospaziale, Università di Roma Sapienza, Via Eudossiana 18, 00184 Roma, Italy.
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20
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Yu X, Li Y, Yin X, Wang X, Han Y, Si Y, Yu J, Ding B. Corncoblike, Superhydrophobic, and Phase-Changeable Nanofibers for Intelligent Thermoregulating and Water-Repellent Fabrics. ACS APPLIED MATERIALS & INTERFACES 2019; 11:39324-39333. [PMID: 31566350 DOI: 10.1021/acsami.9b12934] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The comfort and protection of clothes are critically important for human well-being in life; however, constructing multifunctional fabrics with excellent thermoregulating and water-repellent performance still presents an exciting scientific challenge and a significant technological advancement. Therefore, we report a novel and straightforward methodology to fabricate corncoblike and phase-changeable nanofibers by incorporating n-octadecane phase change capsules (PCCs) for creating water-repellent and thermoregulating nanofibrous membranes. This strategy causes PCC to be uniformly distributed on the nanofibers to form a unique corncoblike structure, preventing the abscission of PCC and the leakage of the phase change ingredient (n-octadecane). Besides, the resultant nanofibrous membranes are endowed with hierarchical roughness, small pore size, and energy storage/release capacity in response to environmental changes. As a consequence, the nanofibrous membranes present prominent water repellence with superhydrophobicity (a water contact angle of 153°) and a high hydrostatic pressure of 84 kPa, robust mechanical properties with a tensile strength of 9.2 MPa, as well as excellent hybrid active-passive thermal regulation with a water vapor transmittance rate of 11.4 kg m-2 d-1 and a high phase change enthalpy of 74 J g-1 after 50 heating/cooling cycles, indicating them to be an exceptional candidate for personal protection and thermal management.
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Affiliation(s)
- Xi Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles , Donghua University , Shanghai 201620 , China
| | - Yang Li
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
| | - Xia Yin
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles , Donghua University , Shanghai 201620 , China
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
| | - Xianfeng Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles , Donghua University , Shanghai 201620 , China
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
| | - Yuhao Han
- China University of Geosciences , Wuhan 430074 , China
| | - Yang Si
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles , Donghua University , Shanghai 201620 , China
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
| | - Jianyong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles , Donghua University , Shanghai 201620 , China
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
| | - Bin Ding
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles , Donghua University , Shanghai 201620 , China
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
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