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Liu N, Yang Z, Sun Y, Shan L, Li H, Wang Z. Slippery Mechanism for Enhancing Separation and Anti-fouling of the Superhydrophobic Membrane in a Water-in-Oil Emulsion: Evaluating Water Adhesion of the Membrane Surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8312-8323. [PMID: 35767278 DOI: 10.1021/acs.langmuir.2c00767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Water removal from water-in-oil emulsions with superhydrophobic microporous membranes is an important industrial process, where the interface property between the membrane and feed becomes critical. Here, superhydrophobic isotactic polypropylene (iPP) microporous membranes with the "lotus effect" and "rose-petal effect" were prepared via utilizing micromolding phase separation, where the former surface exhibited a water contact angle of 153° and a sliding angle of 3.2°, while the latter surface exhibited a water contact angle of 151° and adhesive characteristics. Surface topography and wettability analysis revealed that surface hydrophobicity and water adhesion could be improved by reducing the periodic distance and diameter and increasing the height of the micron-scale structure. When treating both water-in-oil emulsions and water-in-oil emulsions containing BSA pollutants, the iPP membrane with the "lotus effect" was superior to that with the "rose-petal effect" in terms of oil permeate flux, separation efficiency, anti-fouling ability, and recyclability (20 cycles). To explain this phenomenon, a "slippery" mechanism was introduced that correlated the sliding angle to the slippery surface of the iPP membrane with the "lotus effect" and its anti-water adhesion property. This work proposed a theoretical platform for investigating the effect of water adhesion on superhydrophobic membranes in terms of oil-water separation efficiency and anti-fouling ability, thereby providing a definite basis for preparing superhydrophobic membranes with efficient separation and fouling resistance capabilities.
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Affiliation(s)
- Ning Liu
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Zhensheng Yang
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Yue Sun
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Linna Shan
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Hao Li
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Zhiying Wang
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
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Chen J, Chen J, Li L, Wang S, Xie Y. Droplet rolling angle model of micro-nanostructure superhydrophobic coating surface. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2021; 44:25. [PMID: 33751249 DOI: 10.1140/epje/s10189-021-00036-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
The droplet rolling angle is one of the important indicators to measure the coating's hydrophobic performance, but the specific factors affecting the droplet rolling angle on the micro-nanostructured superhydrophobic coating surface are not yet known. Based on the rolling mechanism of droplets on rough surfaces, and from the perspective of coating microscopic energy conservation, this paper points out that the micron-scale morphology and the nanoscale morphology can comprehensively affect the droplet rolling angle. From the above perspective, a mathematical model of the droplet rolling angle on the micro-nanostructure superhydrophobic coating surface was established. The model shows that the droplet rolling angle is positively correlated with the ratio of nano-sized pillar width to spacing, the ratio of micron-sized papilla radius to spacing, and the liquid-gas interfacial tension, and is negatively correlated to the droplet intrinsic contact angle, droplet volume and droplet density. The droplet rolling angle calculated by the presented model is in good agreement with the experimentally tested results. This model can provide good accuracy in predicting the droplet rolling angle on the micro-nanostructured superhydrophobic coating surface.
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Affiliation(s)
- Jinyu Chen
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Junwu Chen
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China.
| | - Lee Li
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China.
| | - Shengwu Wang
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Yi Xie
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology (WUT), Wuhan, 430074, China
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Qin J, Li Z, Song B. Bioinspired design of amphiphilic particles with tailored compartments for dual-drug controlled release. J Mater Chem B 2021; 8:1682-1691. [PMID: 32016233 DOI: 10.1039/c9tb02540e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Inspired by the phenomenon of water droplets hanging over rose petals, we propose a green interfacial self-assembly strategy to construct amphiphilic particles with controllable compartments for dual-drug encapsulation and controlled release. The method involves fabrication of "sticky" superhydrophobic materials, assembling superhydrophilic hydrogel beads with "sticky" superhydrophobic material into an amphiphilic particle, and amphiphilicity induced self-organization of several small amphiphilic particles into a large-sized amphiphilic multicompartmental particle. With the employment of this approach, amphiphilic particles with tailored sizes, controllable morphology, and tunable numbers of compartments are successfully constructed. The formation process and the underlying principle are further clarified. We finally investigate the potential application of the amphiphilic multicompartmental particles to load both hydrophilic and hydrophobic species in separated domains and release them in a controllable manner without interference. This novel approach may offer a new route to generate amphiphilic materials for the purpose of multidrug combination therapy, multiple-cell encapsulation, and so on.
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Affiliation(s)
- Juanrong Qin
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, Shaanxi, People's Republic of China.
| | - Zeke Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, Shaanxi, People's Republic of China.
| | - Botao Song
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, Shaanxi, People's Republic of China.
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Synthesis, self-assembly of perfluoropolyether based ABA-triblock copolymers for superhydrophobic surface applications. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122732] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Zhang Y, Bi J, Wang S, Cao Q, Li Y, Zhou J, Zhu BW. Functional food packaging for reducing residual liquid food: Thermo-resistant edible super-hydrophobic coating from coffee and beeswax. J Colloid Interface Sci 2019; 533:742-749. [DOI: 10.1016/j.jcis.2018.09.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/01/2018] [Accepted: 09/03/2018] [Indexed: 12/24/2022]
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Rima S, Lattuada M. Protein Amyloid Fibrils as Template for the Synthesis of Silica Nanofibers, and Their Use to Prepare Superhydrophobic, Lotus-Like Surfaces. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1802854. [PMID: 30350472 DOI: 10.1002/smll.201802854] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 09/28/2018] [Indexed: 06/08/2023]
Abstract
In this work, amyloid fibrils are used as a template for the preparation of long silica fibers, with a variety of aspect ratios and surface roughness. Starting with β-lactoglobulin fibrils with typical diameters of about 20 nm and a length of several micrometers, two different strategies are followed to grow silica: either in water at acidic pH values, or in ethanol-water mixtures under Stöber conditions and an excellent control of both the thickness and the roughness of the silica layer has been achieved. Silica nanofibers with a thickness ranging from a few nanometers to hundreds of nanometers are prepared. As an application, the rough silica nanotubes are used to create superhydrophobic surfaces by mimicking the structure of the lotus leaf. The papillary structure of the lotus leaf is replicated by depositing 10 μm colloidal particles in either a single colloidal crystal, or in a binary colloidal crystal made with smaller sub-micrometer particles. Then, silica nanofibers are deposited on the binary colloidal crystal surfaces through a layer-by-layer deposition procedure to replicate the nanoscale roughness provided by wax nanotubes. Upon hydrophobization of the silica nanotubes, the final surfaces are highly superhydrophobic, with a water contact angle of 165.5°.
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Affiliation(s)
- Simonetta Rima
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
| | - Marco Lattuada
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700, Fribourg, Switzerland
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Li Y, Bi J, Wang S, Zhang T, Xu X, Wang H, Cheng S, Zhu BW, Tan M. Bio-inspired Edible Superhydrophobic Interface for Reducing Residual Liquid Food. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:2143-2150. [PMID: 29444564 DOI: 10.1021/acs.jafc.7b05915] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Significant wastage of residual liquid food, such as milk, yogurt, and honey, in food containers has attracted great attention. In this work, a bio-inspired edible superhydrophobic interface was fabricated using U.S. Food and Drug Administration-approved and edible honeycomb wax, arabic gum, and gelatin by a simple and low-cost method. The bio-inspired edible superhydrophobic interface showed multiscale structures, which were similar to that of a lotus leaf surface. This bio-inspired edible superhydrophobic interface displayed high contact angles for a variety of liquid foods, and the residue of liquid foods could be effectively reduced using the bio-inspired interface. To improve the adhesive force of the superhydrophobic interface, a flexible edible elastic film was fabricated between the interface and substrate material. After repeated folding and flushing for a long time, the interface still maintained excellent superhydrophobic property. The bio-inspired edible superhydrophobic interface showed good biocompatibility, which may have potential applications as a functional packaging interface material.
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Affiliation(s)
- Yao Li
- School of Food Science and Technology , Dalian Polytechnic University , 1 Qinggongyuan , Ganjingzi District, Dalian , Liaoning 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian , Liaoning 116034 , People's Republic of China
- State Key Laboratory of Bioactive Seaweed Substances , Huangdao District, Qingdao , Shandong 266000 , People's Republic of China
| | - Jingran Bi
- School of Food Science and Technology , Dalian Polytechnic University , 1 Qinggongyuan , Ganjingzi District, Dalian , Liaoning 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian , Liaoning 116034 , People's Republic of China
| | - Siqi Wang
- School of Food Science and Technology , Dalian Polytechnic University , 1 Qinggongyuan , Ganjingzi District, Dalian , Liaoning 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian , Liaoning 116034 , People's Republic of China
| | - Tan Zhang
- School of Food Science and Technology , Dalian Polytechnic University , 1 Qinggongyuan , Ganjingzi District, Dalian , Liaoning 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian , Liaoning 116034 , People's Republic of China
| | - Xiaomeng Xu
- School of Food Science and Technology , Dalian Polytechnic University , 1 Qinggongyuan , Ganjingzi District, Dalian , Liaoning 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian , Liaoning 116034 , People's Republic of China
| | - Haitao Wang
- School of Food Science and Technology , Dalian Polytechnic University , 1 Qinggongyuan , Ganjingzi District, Dalian , Liaoning 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian , Liaoning 116034 , People's Republic of China
| | - Shasha Cheng
- School of Food Science and Technology , Dalian Polytechnic University , 1 Qinggongyuan , Ganjingzi District, Dalian , Liaoning 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian , Liaoning 116034 , People's Republic of China
| | - Bei-Wei Zhu
- School of Food Science and Technology , Dalian Polytechnic University , 1 Qinggongyuan , Ganjingzi District, Dalian , Liaoning 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian , Liaoning 116034 , People's Republic of China
- State Key Laboratory of Bioactive Seaweed Substances , Huangdao District, Qingdao , Shandong 266000 , People's Republic of China
| | - Mingqian Tan
- School of Food Science and Technology , Dalian Polytechnic University , 1 Qinggongyuan , Ganjingzi District, Dalian , Liaoning 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian , Liaoning 116034 , People's Republic of China
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Wan S, Cong Y, Jiang D, Dong ZH. Weathering barrier enhancement of printed circuit board by fluorinated silica based superhydrophobic coating. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.11.056] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Huynh SH, Chung DCK, Muradoglu M, Liew OW, Ng TW. Millimeter-Sized Hole Damming. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13892-13898. [PMID: 29116806 DOI: 10.1021/acs.langmuir.7b03290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Valves used to control liquid filling and draining processes from storage typically need to be actuated. Here, we show that similar flow enabling and restricting operations can be achieved through millimeter scale holes that function according to the amount of hydrostatic pressure applied without any other intervention. This phenomena is exhibited using receptacles where the base is made of either a hydrophilic or superhydrophobic substrate with hole sizes ranging from 1.0-2.0 mm. The construction is such that the drainage flow velocities are of the same order in both substrates and follow Torricelli's law trends. Nevertheless, the primary mechanisms responsible for resisting the onset of flow in each substrate are different; nonbreaching of the advancing contact angle threshold in the former, and stable maintenance of an elastic-like deformation of the liquid-gas interface that is connected to the surrounding plastron in the latter. These differences are demonstrated using an upward jet of water delivered to the orifice, where a discharging flow from the hydrophilic base occurred before the threshold hydrostatic pressure condition was attained, while liquid from the jet is subsumed into the liquid body of the receptacle with the superhydrophobic base without any leakage. These findings portend advantages in simplicity and robustness for a myriad of liquid-related processes.
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Affiliation(s)
- So Hung Huynh
- Laboratory for Optics and Applied Mechanics, Department of Mechanical & Aerospace Engineering, Monash University , Clayton, Victoria 3800, Australia
| | - Dwayne Chung Kim Chung
- Laboratory for Optics and Applied Mechanics, Department of Mechanical & Aerospace Engineering, Monash University , Clayton, Victoria 3800, Australia
| | - Murat Muradoglu
- Laboratory for Optics and Applied Mechanics, Department of Mechanical & Aerospace Engineering, Monash University , Clayton, Victoria 3800, Australia
| | - Oi Wah Liew
- Cardiovascular Research Institute, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Centre for Translational Medicine , 14 Medical Drive, Singapore 117599
| | - Tuck Wah Ng
- Laboratory for Optics and Applied Mechanics, Department of Mechanical & Aerospace Engineering, Monash University , Clayton, Victoria 3800, Australia
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Dong J, Jin Y, Dong H, Sun L. Numerical Calculation Method of Apparent Contact Angles on Heterogeneous Double-Roughness Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10411-10418. [PMID: 28885028 DOI: 10.1021/acs.langmuir.7b02564] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Double-roughness surfaces can be used to mimic lotus surfaces. The apparent contact angles (ACAs) of droplets on these surfaces were first calculated by Herminghaus. Then Patankar utilized the pillar model to improve the Herminghaus approach and put forward the formulas for ACAs calculation of the homogeneous double-roughness surfaces where the dual-scale structures and the bases were the same wettable materials. In this paper, we propose a numerical calculation method of ACAs on the heterogeneous double-roughness surfaces where the dual-scale structures and the bases are made of different wettable materials. This numerical calculation method has successfully enhanced the Herminghaus approach. It is promising to become a novel design approach of heterogeneous superhydrophobic surfaces, which are frequently applied in technical fields of self-cleaning, anti-icing, antifogging, and enhancing condensation heat transfer.
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Affiliation(s)
- Jian Dong
- Key Laboratory of E&M, Zhejiang University of Technology, Ministry of Education & Zhejiang Province , Hangzhou, 310014, China
| | - Yanli Jin
- Key Laboratory of E&M, Zhejiang University of Technology, Ministry of Education & Zhejiang Province , Hangzhou, 310014, China
| | - He Dong
- Key Laboratory of E&M, Zhejiang University of Technology, Ministry of Education & Zhejiang Province , Hangzhou, 310014, China
| | - Li Sun
- Key Laboratory of E&M, Zhejiang University of Technology, Ministry of Education & Zhejiang Province , Hangzhou, 310014, China
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