1
|
Sun J, Dai L, Lv K, Wen Z, Li Y, Yang D, Yan H, Liu X, Liu C, Li MC. Recent advances in nanomaterial-stabilized pickering foam: Mechanism, classification, properties, and applications. Adv Colloid Interface Sci 2024; 328:103177. [PMID: 38759448 DOI: 10.1016/j.cis.2024.103177] [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: 10/06/2023] [Revised: 04/07/2024] [Accepted: 05/03/2024] [Indexed: 05/19/2024]
Abstract
Pickering foam is a type of foam stabilized by solid particles known as Pickering stabilizers. These solid stabilizers adsorb at the liquid-gas interface, providing superior stability to the foam. Because of its high stability, controllability, versatility, and minimal environmental impact, nanomaterial-stabilized Pickering foam has opened up new possibilities and development prospects for foam applications. This review provides an overview of the current state of development of Pickering foam stabilized by a wide range of nanomaterials, including cellulose nanomaterials, chitin nanomaterials, silica nanoparticles, protein nanoparticles, clay mineral, carbon nanotubes, calcium carbonate nanoparticles, MXene, and graphene oxide nanosheets. Particularly, the preparation and surface modification methods of various nanoparticles, the fundamental properties of nanomaterial-stabilized Pickering foam, and the synergistic effects between nanoparticles and surfactants, functional polymers, and other additives are systematically introduced. In addition, the latest progress in the application of nanomaterial-stabilized Pickering foam in the oil industry, food industry, porous functional material, and foam flotation field is highlighted. Finally, the future prospects of nanomaterial-stabilized Pickering foam in different fields, along with directions for further research and development directions, are outlined.
Collapse
Affiliation(s)
- Jinsheng Sun
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China; Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao, Shandong 266580, China
| | - Liyao Dai
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Kaihe Lv
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China; Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao, Shandong 266580, China
| | - Zhibo Wen
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Yecheng Li
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Dongqing Yang
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Hao Yan
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Xinyue Liu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Chaozheng Liu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Mei-Chun Li
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao, Shandong 266580, China.
| |
Collapse
|
2
|
Sheng Y, Zhang H, Song X, Wang Z, Wang X, Li Y. Comparative study on foaming and foam stability of multiple mixed systems of fluorocarbon, hydrocarbon, and amino acid surfactants. J SURFACTANTS DETERG 2023. [DOI: 10.1002/jsde.12669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Affiliation(s)
- Youjie Sheng
- College of Safety Science and Engineering Xi'an University of Science and Technology Xi'an China
| | - Hanling Zhang
- College of Safety Science and Engineering Xi'an University of Science and Technology Xi'an China
| | | | - Zhenping Wang
- College of Safety Science and Engineering Xi'an University of Science and Technology Xi'an China
| | - Xu Wang
- Yankuang Energy Mine Rescue Brigade Jining China
| | - Yang Li
- College of Safety Science and Engineering Xi'an University of Science and Technology Xi'an China
| |
Collapse
|
3
|
Gupta R, Saini R, Parmar R. Analysis of stability of silica nano-particle-laden microbubble dispersion. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:24899-24906. [PMID: 35113375 DOI: 10.1007/s11356-021-18019-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 12/02/2021] [Indexed: 06/14/2023]
Abstract
Microbubbles are small gas-filled bubbles which have wide application in various industries. The stability of microbubble is of primary concern for the application of microbubble. In this research, the stability of microbubble dispersion generated using CTAB surfactant is analyzed by drainage mechanism. The stability of microbubble dispersion is studied on the basis of the half-life of microbubble dispersion. Microbubble dispersion gas fraction and apparent rise velocity of interface of microbubble dispersion are also calculated. The size of microbubble is estimated from the apparent rise velocity of interface of microbubble dispersion. Further, silica nano-particles are added to the surfactants to study their effect on the stability of microbubble dispersion. The observed results clearly indicate that the stability of microbubble dispersion is significantly affected by the surfactant concentration and the weight of silica nano-particle in the liquid. Similar results were observed for the apparent rise velocity of interface and bubble size of dispersion. The present work may be beneficial for the application of microbubble in various chemical and biochemical industries and scientific community.
Collapse
Affiliation(s)
- Rashi Gupta
- Department of Chemical Engineering, Maulana Azad National Institute of Technology, Bhopal, 462003, M.P, India
| | - Roshan Saini
- Department of Chemical Engineering, Maulana Azad National Institute of Technology, Bhopal, 462003, M.P, India
| | - Rajeev Parmar
- Department of Chemical Engineering, Maulana Azad National Institute of Technology, Bhopal, 462003, M.P, India.
| |
Collapse
|
4
|
Sheng Y, Peng Y, Zhang S, Guo Y, Ma L, Zhang H. Thermal stability of foams stabilized by fluorocarbon and hydrocarbon surfactants in presence of nanoparticles with different specific surface areas. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
5
|
Li S, Li S, Du K, Zhu J, Shang L, Zhang K. Synthesis and stability of switchable CO 2-responsive foaming coupled with nanoparticles. iScience 2022; 25:105091. [PMID: 36164653 PMCID: PMC9508482 DOI: 10.1016/j.isci.2022.105091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/03/2022] [Accepted: 09/01/2022] [Indexed: 11/29/2022] Open
Abstract
CO2-responsive foaming has been drawing huge attention due to its unique switching characteristics in academic research and industrial practices, whereas its stability remains questionable for further applications. In this paper, a new CO2-switchable foam was synthesized by adding the preferably selected hydrophilic nanoparticle N20 into the foaming agent C12A, through a series of analytical experiments. Overall, the synergy between cationic surfactants and nanoparticles with a contact angle of 37.83° is the best. More specifically, after adding 1.5 wt% N20, the half-life of foam is 14 times longer than that of pure C12A foam. What’s more, the C12A-N20 solution is validated to own distinctive CO2-N2 switching features because very slight foaming degradations are observed in terms of the foaming volume and half-life time even after three cycles of CO2-N2 injections. This study is of paramount importance pertaining to future CO2 foam research and applications in energy and environmental practices. Cationic surfactants have the best synergy with NPs with a contact angle of 37.83° The foam stability increased with the increase of NPs concentration CO2/N2 can control the foaming properties of C12A-N20 solution and are reversible
Collapse
Affiliation(s)
- Songyan Li
- Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, P. R. China.,School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Shaopeng Li
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Kexin Du
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Jianzhong Zhu
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Liying Shang
- Engineering Technology Branch, CNOOC Energy Development Co., Ltd, Tianjin 300452, P. R. China
| | - Kaiqiang Zhang
- Institute of Energy, Peking University, Beijing 100871, P. R. China.,Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| |
Collapse
|
6
|
Tyowua AT, Echendu AM, Adejo SO, Binks BP. Influence of particle wettability on foam formation in honey. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:454003. [PMID: 36055236 DOI: 10.1088/1361-648x/ac8f0b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
The rising level of obesity is often attributed to high sugar and/or fat consumption. Therefore, the food industry is constantly searching for ways to reduce or eliminate sugar or fat in food products. Therefore, honey foam, which contains little sugar and no fat, can be used as cake, cracker or bread spread instead of butter or margarine which contains a substantial amount of fat or jam that contains a substantial amount of sugar. Small solid particles (nanometers to micrometers) of suitable wettability are now considered outstanding foam-stabilizing agents. However, while the degree of particle wettability necessary to obtain very stable aqueous and nonaqueous foams is well-known, that needed to obtain very stable honey foam is unknown. In this study, the influence of the degree of wettability of fumed silica particles, indicated by their % SiOH (14-100), was investigated in honey in relation to foam formation and foam stability. The honephilic particles (61%-100% SiOH) formed particle dispersion in honey, while foams were obtained with the honephobic particles (14%-50% SiOH). The thread-off between particle dispersion and foam formation occurs at 50% SiOH, meaning foam formation in honey is possible when the particles are at least 50% honephobic. At relatively low particle concentration <1 wt.%, foam volume decreases with increasing honephobicity, but increases with honephobicity at relatively high concentration >1 wt.%. Also, as particle concentration increases, the shape of the air bubbles in the foam changes from spherical to non-spherical. After a little drainage, the foams remain stable to drainage and did not coalesce substantially for more than six months. These findings will guide the formulation of edible Pickering honey foams.
Collapse
Affiliation(s)
- Andrew T Tyowua
- Applied Colloid Science and Cosmeceutical Group, Centre for Food Technology & Research, Department of Chemistry, Benue State University, PMB 102119 Makurdi, Nigeria
| | - Adebukola M Echendu
- Applied Colloid Science and Cosmeceutical Group, Centre for Food Technology & Research, Department of Chemistry, Benue State University, PMB 102119 Makurdi, Nigeria
| | - Sylvester O Adejo
- Applied Colloid Science and Cosmeceutical Group, Centre for Food Technology & Research, Department of Chemistry, Benue State University, PMB 102119 Makurdi, Nigeria
| | - Bernard P Binks
- Department of Chemistry and Biochemistry, University of Hull, Hull HU6 7RX, United Kingdom
| |
Collapse
|
7
|
Xie D, Jiang Y, Song B, Yang X. Switchable Pickering foams stabilized by mesoporous nanosilica hydrophobized in situ with a Gemini surfactant. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
8
|
Influence of nanoparticles on the foam thermal stability of mixtures of short-chain fluorocarbon and hydrocarbon surfactants. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
9
|
Guzmán E, Martínez-Pedrero F, Calero C, Maestro A, Ortega F, Rubio RG. A broad perspective to particle-laden fluid interfaces systems: from chemically homogeneous particles to active colloids. Adv Colloid Interface Sci 2022; 302:102620. [PMID: 35259565 DOI: 10.1016/j.cis.2022.102620] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 01/12/2023]
Abstract
Particles adsorbed to fluid interfaces are ubiquitous in industry, nature or life. The wide range of properties arising from the assembly of particles at fluid interface has stimulated an intense research activity on shed light to the most fundamental physico-chemical aspects of these systems. These include the mechanisms driving the equilibration of the interfacial layers, trapping energy, specific inter-particle interactions and the response of the particle-laden interface to mechanical perturbations and flows. The understanding of the physico-chemistry of particle-laden interfaces becomes essential for taking advantage of the particle capacity to stabilize interfaces for the preparation of different dispersed systems (emulsions, foams or colloidosomes) and the fabrication of new reconfigurable interface-dominated devices. This review presents a detailed overview of the physico-chemical aspects that determine the behavior of particles trapped at fluid interfaces. This has been combined with some examples of real and potential applications of these systems in technological and industrial fields. It is expected that this information can provide a general perspective of the topic that can be exploited for researchers and technologist non-specialized in the study of particle-laden interfaces, or for experienced researcher seeking new questions to solve.
Collapse
Affiliation(s)
- Eduardo Guzmán
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain; Unidad de Materia Condensada, Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XXIII 1, 28040 Madrid, Spain.
| | - Fernando Martínez-Pedrero
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain.
| | - Carles Calero
- Departament de Física de la Matèria Condensada, Facultat de Física, Universitat de Barcelona, Avenida Diagonal 647, 08028 Barcelona, Spain; Institut de Nanociència i Nanotecnologia, IN2UB, Universitat de Barcelona, Avenida, Diagonal 647, 08028 Barcelona, Spain
| | - Armando Maestro
- Centro de Fı́sica de Materiales (CSIC, UPV/EHU)-Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain; IKERBASQUE-Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
| | - Francisco Ortega
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain; Unidad de Materia Condensada, Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XXIII 1, 28040 Madrid, Spain
| | - Ramón G Rubio
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain; Unidad de Materia Condensada, Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XXIII 1, 28040 Madrid, Spain.
| |
Collapse
|
10
|
Pickering foams and parameters influencing their characteristics. Adv Colloid Interface Sci 2022; 301:102606. [PMID: 35182930 DOI: 10.1016/j.cis.2022.102606] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/20/2022] [Accepted: 01/26/2022] [Indexed: 11/21/2022]
Abstract
Pickering foams are available in many applications and have been continually gaining interest in the last two decades. Pickering foams are multifaceted, and their characteristics are highly dependent on many factors, such as particle size, charge, hydrophobicity and concentration as well as the charge and concentration of surfactants and salts available in the system. A literature review of these individual studies at first might seem confusing and somewhat contradictory, particularly in multi-component systems with particles and surfactants with different charges in the presence of salts. This paper provides a comprehensive overview of particle-stabilized foams, also known as Pickering foams and froths. Underlying mechanisms of foam stabilization by particles with different morphology, surface chemistry, size and type are reviewed and clarified. This paper also outlines the role of salts and different factors such as pH, temperature and gas type on Pickering foams. Further, we highlight recent developments in Pickering foams in different applications such as food, mining, oil and gas, and wastewater treatment industries, where Pickering foams are abundant. We conclude this overview by presenting important research avenues based on the gaps identified here. The focus of this review is limited to Pickering foams of surfactants with added salts and does not include studies on polymers, proteins, or other macromolecules.
Collapse
|
11
|
Zhao G, Wang X, Dai C, Sun N, Liang L, Yang N, Li J. Investigation of a novel enhanced stabilized foam: Nano-graphite stabilized foam. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117466] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
12
|
Aqueous foams and emulsions stabilized by mixtures of silica nanoparticles and surfactants: A state-of-the-art review. CHEMICAL ENGINEERING JOURNAL ADVANCES 2021. [DOI: 10.1016/j.ceja.2021.100116] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
13
|
Guzmán E, Abelenda-Núñez I, Maestro A, Ortega F, Santamaria A, Rubio RG. Particle-laden fluid/fluid interfaces: physico-chemical foundations. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:333001. [PMID: 34102618 DOI: 10.1088/1361-648x/ac0938] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 06/08/2021] [Indexed: 06/12/2023]
Abstract
Particle-laden fluid/fluid interfaces are ubiquitous in academia and industry, which has fostered extensive research efforts trying to disentangle the physico-chemical bases underlying the trapping of particles to fluid/fluid interfaces as well as the properties of the obtained layers. The understanding of such aspects is essential for exploiting the ability of particles on the stabilization of fluid/fluid interface for the fabrication of novel interface-dominated devices, ranging from traditional Pickering emulsions to more advanced reconfigurable devices. This review tries to provide a general perspective of the physico-chemical aspects associated with the stabilization of interfaces by colloidal particles, mainly chemical isotropic spherical colloids. Furthermore, some aspects related to the exploitation of particle-laden fluid/fluid interfaces on the stabilization of emulsions and foams will be also highlighted. It is expected that this review can be used for researchers and technologist as an initial approach to the study of particle-laden fluid layers.
Collapse
Affiliation(s)
- Eduardo Guzmán
- Departamento de Química Física, Universidad Complutense de Madrid, Madrid, Spain
- Instituto Pluridisciplinar, Universidad Complutense de Madrid, Madrid, Spain
| | - Irene Abelenda-Núñez
- Departamento de Química Física, Universidad Complutense de Madrid, Madrid, Spain
| | | | - Francisco Ortega
- Departamento de Química Física, Universidad Complutense de Madrid, Madrid, Spain
- Instituto Pluridisciplinar, Universidad Complutense de Madrid, Madrid, Spain
| | - Andreas Santamaria
- Instituto Pluridisciplinar, Universidad Complutense de Madrid, Madrid, Spain
- Institut Laue-Langevin, Grenoble, France
| | - Ramón G Rubio
- Departamento de Química Física, Universidad Complutense de Madrid, Madrid, Spain
- Instituto Pluridisciplinar, Universidad Complutense de Madrid, Madrid, Spain
| |
Collapse
|
14
|
Lobel BT, Thomas CA, Ireland PM, Wanless EJ, Webber GB. Liquid marbles, formation and locomotion using external fields and forces. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.04.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
15
|
Alzobaidi S, Da C, Wu P, Zhang X, Rabat-Torki NJ, Harris JM, Hackbarth JE, Lu C, Hu D, Johnston KP. Tuning Nanoparticle Surface Chemistry and Interfacial Properties for Highly Stable Nitrogen-In-Brine Foams. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:5408-5423. [PMID: 33881323 DOI: 10.1021/acs.langmuir.1c00832] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The design of surface chemistries on nanoparticles (NPs) to stabilize gas/brine foams with concentrated electrolytes, especially with divalent ions, has been elusive. Herein, we tune the surface of 20 nm silica NPs by grafting a hydrophilic and a hydrophobic ligand to achieve two seemingly contradictory goals of colloidal stability in brine and high NP adsorption to yield a viscoelastic gas-brine interface. Highly stable nitrogen/water (N2/brine) foams are formed with CaCl2 concentrations up to 2% from 25 to 90 °C. The viscoelastic gas-brine interface retards drainage of the lamellae, and the high dilational elasticity arrests coarsening (Ostwald ripening) with no observable change in foam bubble size over 48 h. The ability to design NP-laden viscoelastic interfaces for highly stable foams, even with high divalent ion concentrations, is of fundamental mechanistic interest for a broad range of foam applications and in particular foams for CO2 sequestration and enhanced oil recovery.
Collapse
Affiliation(s)
- Shehab Alzobaidi
- McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, 200 East Dean Keeton Street, Austin, Texas 78712-1139, United States
| | - Chang Da
- McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, 200 East Dean Keeton Street, Austin, Texas 78712-1139, United States
| | - Pingkeng Wu
- McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, 200 East Dean Keeton Street, Austin, Texas 78712-1139, United States
| | - Xuan Zhang
- McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, 200 East Dean Keeton Street, Austin, Texas 78712-1139, United States
| | - Nava J Rabat-Torki
- McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, 200 East Dean Keeton Street, Austin, Texas 78712-1139, United States
| | - Justin M Harris
- McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, 200 East Dean Keeton Street, Austin, Texas 78712-1139, United States
| | - Jamie E Hackbarth
- McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, 200 East Dean Keeton Street, Austin, Texas 78712-1139, United States
| | - Congwen Lu
- McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, 200 East Dean Keeton Street, Austin, Texas 78712-1139, United States
| | - Dongdong Hu
- McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, 200 East Dean Keeton Street, Austin, Texas 78712-1139, United States
| | - Keith P Johnston
- McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, 200 East Dean Keeton Street, Austin, Texas 78712-1139, United States
| |
Collapse
|
16
|
Majeed T, Kamal MS, Zhou X, Solling T. A Review on Foam Stabilizers for Enhanced Oil Recovery. ENERGY & FUELS 2021; 35:5594-5612. [DOI: 10.1021/acs.energyfuels.1c00035] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Affiliation(s)
- Talha Majeed
- Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
| | - Muhammad Shahzad Kamal
- Center for Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia
| | - Xianmin Zhou
- Center for Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia
| | - Theis Solling
- Center for Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia
| |
Collapse
|
17
|
Correia EL, Brown N, Razavi S. Janus Particles at Fluid Interfaces: Stability and Interfacial Rheology. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:374. [PMID: 33540620 PMCID: PMC7913064 DOI: 10.3390/nano11020374] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 01/26/2021] [Accepted: 01/29/2021] [Indexed: 02/08/2023]
Abstract
The use of the Janus motif in colloidal particles, i.e., anisotropic surface properties on opposite faces, has gained significant attention in the bottom-up assembly of novel functional structures, design of active nanomotors, biological sensing and imaging, and polymer blend compatibilization. This review is focused on the behavior of Janus particles in interfacial systems, such as particle-stabilized (i.e., Pickering) emulsions and foams, where stabilization is achieved through the binding of particles to fluid interfaces. In many such applications, the interface could be subjected to deformations, producing compression and shear stresses. Besides the physicochemical properties of the particle, their behavior under flow will also impact the performance of the resulting system. This review article provides a synopsis of interfacial stability and rheology in particle-laden interfaces to highlight the role of the Janus motif, and how particle anisotropy affects interfacial mechanics.
Collapse
Affiliation(s)
| | | | - Sepideh Razavi
- School of Chemical, Biological, and Materials Engineering, University of Oklahoma, 100 E. Boyd Street, Norman, OK 73019, USA; (E.L.C.); (N.B.)
| |
Collapse
|
18
|
Luo X, Lin Q, Wen S, Wang Y, Lai H, Qi L, Wu X, Zhou Y, Song Z. Effect of Sodium Dodecyl Sulfonate on the Foam Stability and Adsorption Configuration of Dodecylamine at the Gas-Liquid Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1235-1246. [PMID: 33434429 DOI: 10.1021/acs.langmuir.0c03248] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, the effect of sodium dodecyl sulfonate (SDS) on the foam stability of dodecylamine (DDA) and on its adsorption configuration at the gas-liquid interface was investigated. Froth stability experiments, surface tension measurements, time-of-flight secondary-ion mass spectrometry measurements, and molecular dynamics simulation calculations were performed in this investigation. The results revealed that the foam stability of DDA solution was extremely strong, and the addition of SDS could decrease the foam stability when the concentration of DDA was less than a certain value. The decrease in foam stability could be ascribed to several reasons, namely, the big cross-sectional area of SDS at the gas-liquid interface and low adsorption capacity of surfactants at the gas-liquid interface, the high surface tension, the change in the double-layer structure, the small thickness of the gas-liquid interfacial layer, the weak interaction intensity between the head groups of the surfactants and the water molecules, the strong movement ability of the water molecules around the head groups, and the sparse and less upright arrangement configuration of molecules at the gas-liquid interface. These findings can greatly help in solving the strong foam stability problem in DDA flotation and provide a method for reducing foam stability.
Collapse
Affiliation(s)
- Ximei Luo
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
| | - Qiqiang Lin
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Shuming Wen
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
| | - Yunfan Wang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Hao Lai
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Linping Qi
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Xuetong Wu
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Yongfeng Zhou
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Zhenguo Song
- State Key Laboratory of Mineral Processing Science and Technology, BGRIMM Technology Group, Beijing 100160, China
| |
Collapse
|
19
|
Abe K, Inasawa S. Buckling and Drying Kinetics of Particle-Stabilized Water Droplets Fully or Partially Immersed in an Oil Layer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:219-229. [PMID: 33373243 DOI: 10.1021/acs.langmuir.0c02800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We have investigated the effect of buckling of particle-stabilized water droplets on the drying kinetics. Particle-stabilized water droplets in an oil phase were prepared and the shrinking modes of the droplets during drying were controlled by the wettability of the particles. We obtained water droplets with and without buckling and used them in drying experiments. The drying times were comparable when the droplets were fully immersed in a thick oil layer. However, when the thickness of the oil layer was smaller than the droplet diameter, the buckled droplets showed faster drying. Observation of the reflection images around the droplets suggested that the buckled droplets preferentially shrank in the height direction, while the droplets without buckling isotropically shrank. Mathematical models that assumed diffusion of dissolved water molecules in the oil layer showed good agreement with the experimental data. The effective water-oil interfacial area was constant in the buckled droplets, whereas it shrank in the droplets without buckling. This would be a reason for the faster drying of the partially immersed buckled droplets. Particulate shells on liquid droplets could be used to enhance droplet drying.
Collapse
Affiliation(s)
- Kohei Abe
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Susumu Inasawa
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
- Department of Applied Physics and Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| |
Collapse
|
20
|
Anyfantakis M, Jampani VSR, Kizhakidathazhath R, Binks BP, Lagerwall JPF. Responsive Photonic Liquid Marbles. Angew Chem Int Ed Engl 2020; 59:19260-19267. [PMID: 32686264 PMCID: PMC7589305 DOI: 10.1002/anie.202008210] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/06/2020] [Indexed: 01/23/2023]
Abstract
Liquid marbles have potential to serve as mini-reactors for fabricating new materials, but this has been exploited little and mostly for conventional chemical reactions. Here, we uncover the unparalleled capability of liquid marbles to act as platforms for controlling the self-assembly of a bio-derived polymer, hydroxypropyl cellulose, into a cholesteric liquid crystalline phase showing structural coloration by Bragg reflection. By adjusting the cholesteric pitch via quantitative water extraction, we achieve liquid marbles that we can tailor for structural color anywhere in the visible range. Liquid marbles respond with color change that can be detected by eye, to changes in temperature, exposure to toxic chemicals and mechanical deformation. Our concept demonstrates the advantages of using liquid marbles as a miniature platform for controlling the liquid crystal self-assembly of bio-derived polymers, and their exploitation to fabricate sustainable, responsive soft photonic objects.
Collapse
Affiliation(s)
- Manos Anyfantakis
- Department of Physics and Materials ScienceUniversity of Luxembourg162a Avenue de la Faïencerie1511LuxembourgLuxembourg
| | - Venkata S. R. Jampani
- Department of Physics and Materials ScienceUniversity of Luxembourg162a Avenue de la Faïencerie1511LuxembourgLuxembourg
| | - Rijeesh Kizhakidathazhath
- Department of Physics and Materials ScienceUniversity of Luxembourg162a Avenue de la Faïencerie1511LuxembourgLuxembourg
| | - Bernard P. Binks
- Department of Chemistry and BiochemistryUniversity of HullHU6 7RXHullUK
| | - Jan P. F. Lagerwall
- Department of Physics and Materials ScienceUniversity of Luxembourg162a Avenue de la Faïencerie1511LuxembourgLuxembourg
| |
Collapse
|
21
|
Anyfantakis M, Jampani VSR, Kizhakidathazhath R, Binks BP, Lagerwall JPF. Responsive Photonic Liquid Marbles. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008210] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Manos Anyfantakis
- Department of Physics and Materials Science University of Luxembourg 162a Avenue de la Faïencerie 1511 Luxembourg Luxembourg
| | - Venkata S. R. Jampani
- Department of Physics and Materials Science University of Luxembourg 162a Avenue de la Faïencerie 1511 Luxembourg Luxembourg
| | - Rijeesh Kizhakidathazhath
- Department of Physics and Materials Science University of Luxembourg 162a Avenue de la Faïencerie 1511 Luxembourg Luxembourg
| | - Bernard P. Binks
- Department of Chemistry and Biochemistry University of Hull HU6 7RX Hull UK
| | - Jan P. F. Lagerwall
- Department of Physics and Materials Science University of Luxembourg 162a Avenue de la Faïencerie 1511 Luxembourg Luxembourg
| |
Collapse
|
22
|
Whitby CP, Hermant A. Concentration of deposit patterns by nanoparticles modified with short amphiphiles. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124648] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
23
|
|
24
|
Yang L, Wang T, Yang X, Jiang G, Luckham PF, Xu J, Li X, Ni X. Highly Stabilized Foam by Adding Amphiphilic Janus Particles for Drilling a High-Temperature and High-Calcium Geothermal Well. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01714] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Lili Yang
- State Key Laboratory of Petroleum Resources and Prospecting, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China
- Department of Chemical Engineering, Imperial College London, Prince Consort Road, London SW7 2AZ, U.K
| | - Tengda Wang
- State Key Laboratory of Petroleum Resources and Prospecting, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China
| | - Xiao Yang
- State Key Laboratory of Petroleum Resources and Prospecting, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China
| | - Guancheng Jiang
- State Key Laboratory of Petroleum Resources and Prospecting, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China
| | - Paul F. Luckham
- Department of Chemical Engineering, Imperial College London, Prince Consort Road, London SW7 2AZ, U.K
| | - Jianping Xu
- State Key Laboratory of Petroleum Resources and Prospecting, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China
| | - Xinliang Li
- State Key Laboratory of Petroleum Resources and Prospecting, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China
| | - Xiaoxiao Ni
- State Key Laboratory of Petroleum Resources and Prospecting, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China
| |
Collapse
|
25
|
Chen J, Huang X, He L, Luo X. Foaming of Oils: Effect of Poly(dimethylsiloxanes) and Silica Nanoparticles. ACS OMEGA 2019; 4:6502-6510. [PMID: 31459782 PMCID: PMC6648748 DOI: 10.1021/acsomega.9b00347] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 03/28/2019] [Indexed: 06/10/2023]
Abstract
Foaming of oils often confronts researchers in food, cosmetics, and petrochemical industries. Destabilization or stabilization of nonaqueous foams is fundamentally crucial for process control and product quality. Antifoams can be a useful method to control excessive foams. Nonetheless, the foaming mechanisms and the selection criteria of the most common antifoam, poly(dimethylsiloxane) (PDMS) oils, are not thoroughly discussed. The study of inorganic colloidal particles as foam stabilizers has drawn particular attention over the past years practically and academically, yet only a small part of literature focuses on nonaqueous foams. For these reasons, we have studied the effects of PDMS oils and silica nanoparticles on the foaming of oils. We find that the performance of silicone oils as crude oil antifoams is firmly related to PDMS viscosity and crude oil composition presumably because the solubilization of PDMS oils in hydrocarbons reduces with increasing viscosity of the polymers and the hydrocarbons. The findings also illustrate that nanoparticle hydrophobicity and concentration are the primary factors for the foam stabilization effect.
Collapse
Affiliation(s)
- Jianping Chen
- College
of Pipeline and Civil Engineering and School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, P. R. China
| | - Xinjie Huang
- College
of Pipeline and Civil Engineering and School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, P. R. China
| | - Limin He
- College
of Pipeline and Civil Engineering and School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, P. R. China
| | - Xiaoming Luo
- College
of Pipeline and Civil Engineering and School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, P. R. China
| |
Collapse
|
26
|
Binks BP, Shi H. Phase Inversion of Silica Particle-Stabilized Water-in-Water Emulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:4046-4057. [PMID: 30848921 DOI: 10.1021/acs.langmuir.8b04151] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
An aqueous two-phase system (ATPS) is of great value in low calorie foods or oil-free cosmetics and pharmaceuticals. In contrast to the recent work on polymer/polymer ATPSs, a simple polymer/salt ATPS (polyethylene glycol/Na2SO4) was chosen to study water-in-water (w/w) emulsions stabilized by solid particles. The binodal curve and the tie lines were first determined for the mixture at room temperature. Above the binodal curve, two water-based phases coexist; the upper phase is rich in polymer, whereas the lower phase is rich in salt. Within the two-phase region, we attempted to prepare w/w emulsions with or without the addition of common emulsifiers. Ionic and nonionic surfactants, a polymer, and various solid particles (hydrophilic calcium carbonate particles of different sizes and shapes, wax microspheres) were selected, but no stable emulsion was possible. However, stable w/w emulsions of both types (polymer-in-salt and salt-in-polymer) were formed using dichlorodimethylsilane-modified nanosilica particles. Using partially hydrophobic fumed silica as the emulsifier, emulsions remained fully emulsified for over 1 year and we link the extent of hydrophobization of particles to the properties of the emulsions via contact angle measurements. Furthermore, systematic emulsion studies were conducted at different overall compositions such that changes in emulsion type and stability were mapped onto the phase diagram. Catastrophic phase inversion of emulsion type and evolution of emulsion stability were monitored along the tie lines. Importantly, stability to coalescence was found to decrease approaching conditions of phase inversion.
Collapse
Affiliation(s)
- Bernard P Binks
- Department of Chemistry and Biochemistry , University of Hull , Hull HU6 7RX . U.K
| | - Hui Shi
- Department of Chemistry and Biochemistry , University of Hull , Hull HU6 7RX . U.K
| |
Collapse
|
27
|
Enzyme-Loaded Mesoporous Silica Particles with Tuning Wettability as a Pickering Catalyst for Enhancing Biocatalysis. Catalysts 2019. [DOI: 10.3390/catal9010078] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Pickering emulsion systems have created new opportunities for two-phase biocatalysis, however their catalytic performance is often hindered by biphasic mass transfer process relying on the interfacial area. In this study, lipase-immobilized mesoporous silica particles (LMSPs) are employed as both Pickering stabilizers and biocatalysts. A series of alkyl silanes with the different carbon length are used to modify LMSPs to obtain suitable wettability and enlarge the interfacial area of Pickering emulsion. The results show the water/paraffin oil Pickering emulsions stabilized by 8 carbon atoms silane grafted LMSPs (LMSPs_C8) with a three-phase contact angles of 95° get the relatively large interfacial area. Moreover, the conversion of enzymatic reaction catalyzed by LMSPs_C8 Pickering emulsion system is 3.4 times higher than that unmodified LMSPs with the reaction time of 10 min. Additionally, the effective recycling of LMSPs is achieved by simple low-speed centrifugation. As evidenced by a 6-cycles reaction of remaining 75% of relative enzymatic activity, the protection of 350–450 nm mesoporous silica particles can alleviate the inactivation of enzyme from the shear stress and make a benefit to form stabile Pickering emulsion. Therefore, the biphasic reactions in the Pickering emulsion system can be effectively enhanced through changing interfacial area only by the means of adjusting the wettability of biocatalysts.
Collapse
|
28
|
Wu D, Mihali V, Honciuc A. pH-Responsive Pickering Foams Generated by Surfactant-Free Soft Hydrogel Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:212-221. [PMID: 30540483 DOI: 10.1021/acs.langmuir.8b03342] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Pickering foams are foams stabilized by particles and are generally known to have good stability. A special subclass of particle-stabilized foams includes stimuli-responsive Pickering foams that can be formed or deconstructed by applying an external stimuli or changing the environmental conditions; such intelligent particles could find use in many practical applications. Here, we synthesized surfactant-free biocompatible poly[2(diethylamino)ethyl methacrylate] (PDEAEMA) hydrogel particles (HGPs) by emulsion polymerization. The morphology, structure, and surface charge of the HGPs were characterized by TEM, DLS, and the zeta potential, respectively. We have observed that the pH values of the aqueous solution have a strong influence on the formation of the Pickering foams in the presence of PDEAEMA HGPs. Namely, at pH values ≤4.0 no Pickering foams were produced, while at pH values >4.0 stable Pickering foams were formed. Moreover, the height, size and bubble size distribution of Pickering foams are strongly influenced by the pH values of aqueous solution and PDEAEMA HGPs concentration. The formed Pickering foams in basic aqueous solution can all be conveniently deconstructed by changing the pH values to below 4.0. Interestingly, the dried lamellas of the Pickering foams were constituted by either monolayers or multilayers of PDEAEMA HGPs as demonstrated by SEM.
Collapse
Affiliation(s)
- Dalin Wu
- Institute of Chemistry and Biotechnology , Zurich University of Applied Sciences , Einsiedlerstrasse 31 , 8820 Waedenswil , Switzerland
| | - Voichita Mihali
- Institute of Chemistry and Biotechnology , Zurich University of Applied Sciences , Einsiedlerstrasse 31 , 8820 Waedenswil , Switzerland
| | - Andrei Honciuc
- Institute of Chemistry and Biotechnology , Zurich University of Applied Sciences , Einsiedlerstrasse 31 , 8820 Waedenswil , Switzerland
| |
Collapse
|
29
|
Murakami R, Kobayashi S, Okazaki M, Bismarck A, Yamamoto M. Effects of Contact Angle and Flocculation of Particles of Oligomer of Tetrafluoroethylene on Oil Foaming. Front Chem 2018; 6:435. [PMID: 30320066 PMCID: PMC6166006 DOI: 10.3389/fchem.2018.00435] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 09/03/2018] [Indexed: 11/13/2022] Open
Abstract
Oil foams have been stabilized by using particles of oligomer of tetrafluoroethylene (OTFE). OTFE particles were dispersed in oil mixtures prior to aeration, to exclude the oil-repellency nature of the particles due to the formation of the metastable Cassie-Baxter state and properly evaluate the effects of contact angle on the foaming behavior. The particle contact angle (θY) against air/oil surfaces were controlled by changing a composition of two oils with different surface tension (n-heptane and methyl salicylate). The θY value increases with increasing a mole fraction of methyl salicylate, from 42° (for pure n-heptane) to 89° (for pure methyl salicylate). The air volume incorporated in the oils after aerating OTFE dispersions in the oil mixtures shows a maximum when θY = 55°. The flocculation of OTFE particles in bulk oils is responsible for the unexpected behavior of foaming observed when θY is relatively high. The increase in the degree of the flocculation reduces the effective concentration of OTFE particles in bulk oil, leading to the inefficient bubble stabilization. These findings suggest the efficient oil foaming using particles as a stabilizer is achieved by optimizing both the particle contact angle and the degree of flocculation in oils.
Collapse
Affiliation(s)
- Ryo Murakami
- Department of Chemistry, Konan University, Kobe, Japan
| | | | | | - Alexander Bismarck
- Polymer and Composite Engineering (PaCE) Group, Department of Material Chemistry, University of Vienna, Vienna, Austria.,Polymer and Composite Engineering (PaCE) Group, Department of Chemical Engineering, Imperial College London, London, United Kingdom
| | | |
Collapse
|
30
|
Maestro A, Santini E, Guzmán E. Physico-chemical foundations of particle-laden fluid interfaces. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2018; 41:97. [PMID: 30141087 DOI: 10.1140/epje/i2018-11708-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 07/27/2018] [Indexed: 06/08/2023]
Abstract
Particle-laden interfaces are ubiquitous nowadays. The understanding of their properties and structure is essential for solving different problems of technological and industrial relevance; e.g. stabilization of foams, emulsions and thin films. These rely on the response of the interface to mechanical perturbations. The complex mechanical response appearing in particle-laden interfaces requires deepening on the understanding of physico-chemical mechanisms underlying the assembly of particles at interface which plays a central role in the distribution of particles at the interface, and in the complex interfacial dynamics appearing in these systems. Therefore, the study of particle-laden interfaces deserves attention to provide a comprehensive explanation on the complex relaxation mechanisms involved in the stabilization of fluid interfaces.
Collapse
Affiliation(s)
- Armando Maestro
- Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042, Grenoble, Cedex 9, France
| | - Eva Santini
- Istituto di Chimica della Materia Condensata e di Tecnologia per l'Energia (ICMATE), U.O.S. Genova-Consiglio Nazionale delle Ricerche (CNR), Via De Marini 6, 16149, Genova, Italy
| | - Eduardo Guzmán
- Departamento de Química Física I, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain.
- Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XXIII, 1, 28040, Madrid, Spain.
| |
Collapse
|
31
|
Synergy of surface-treated nanoparticle and anionic-nonionic surfactant on stabilization of natural gas foams. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.04.046] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
32
|
Interaction Mechanism between Molybdenite and Kaolinite in Gypsum Solution Using Kerosene as the Flotation Collector. MINERALS 2018. [DOI: 10.3390/min8070304] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This paper aims to understand the fundamental interaction mechanism between molybdenite and kaolinite in gypsum solution using kerosene as collector. Micro-flotation tests were conducted to study the effect of gypsum solution on the flotation performance of mixed −74 μm molybdenite and −10 μm kaolinite mineral. The results showed that the recovery of molybdenite decreased from 86% to 74% while the gypsum solution concentration increased from 0 to 800 mg/L, indicating the detrimental effect of kaolinite on molybdenite flotation could be enhanced by gypsum solution. This is mainly caused by the slime coating of kaolinite on molybdenite through dissolved calcium ion of gypsum solution. In order to confirm the slime coating phenomenon, zeta potential distribution, scanning electron microscopy (SEM) and atomic force microscopy (AFM) measurements were used to investigate interaction characteristics and mechanisms. The zeta potential distribution results revealed that mixed samples had the value between signal molybdenite and kaolinite samples in gypsum solution, which proved the coating phenomenon of kaolinite on molybdenite. Moreover, the coating phenomenon was becoming more and more obvious with the gypsum solution concentration. The coating phenomenon of kaolinite on molybdenite surface was also directly observed from SEM results. The AFM results provided further evidence for the possibility of slime coating, as the adhesion force increased with the gypsum solution concentration, which means the aggregates of molybdenite and kaolinite were becoming more stable.
Collapse
|
33
|
Understanding the role of hydrogen bonding in the aggregation of fumed silica particles in triglyceride solvents. J Colloid Interface Sci 2018; 527:1-9. [PMID: 29775816 DOI: 10.1016/j.jcis.2018.05.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 05/11/2018] [Accepted: 05/11/2018] [Indexed: 11/21/2022]
Abstract
HYPOTHESIS Fumed silica particles are thought to thicken organic solvents into gels by aggregating to form networks. Hydrogen bonding between silanol groups on different particle surfaces causes the aggregation. The gel structure and hence flow behaviour is altered by varying the proportion of silanol groups on the particle surfaces. However, characterising the gel using rheology measurements alone is not sufficient to optimise the aggregation. We have used confocal microscopy to characterise the changes in the network microstructure caused by altering the particle surface chemistry. EXPERIMENTS Organogels were formed by dispersing fumed silica nanoparticles in a triglyceride solvent. The particle surface chemistry was systematically varied from oleophobic to oleophilic by functionalisation with hydrocarbons. We directly visualised the particle networks using confocal scanning laser microscopy and investigated the correlations between the network structure and the shear response of the organogels. FINDINGS Our key finding is that the sizes of the pore spaces in the networks depend on the fraction of silanol groups available to form hydrogen bonds. The reduction in the network elasticity of gels formed by methylated particles can be accounted for by the increasing pore size and tenuous nature of the networks. This is the first report that characterises the changes in the microstructure of fumed silica particle networks in non-polar solvents caused by manipulating the particle surface chemistry.
Collapse
|
34
|
Lazidis A, de Almeida Parizotto L, Spyropoulos F, Norton I. Reprint of: Microstructural design of aerated food systems by soft-solid materials. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2017.07.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
35
|
Xie CY, Meng SX, Xue LH, Bai RX, Yang X, Wang Y, Qiu ZP, Binks BP, Guo T, Meng T. Light and Magnetic Dual-Responsive Pickering Emulsion Micro-Reactors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:14139-14148. [PMID: 29148793 DOI: 10.1021/acs.langmuir.7b03642] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Emulsion droplets can serve as ideal compartments for reactions. In fact, in many cases, the chemical reactions are supposed to be triggered at a desired position and time without change of the system environment. Here, we present a type of light and magnetic dual-responsive Pickering emulsion microreactor by coadsorption of light-sensitive titania (TiO2) and super paramagnetic iron oxide (Fe3O4) nanoparticles at the oil-water interface of emulsion droplets. The droplets encapsulating different reactants in advance can be driven close to each other by an external magnetic field, and then the chemical reaction is triggered by UV illumination due to the contact of the isolated reactants as a result of droplet coalescence. An insight into the incorporation of hydrophobic TiO2 and hydrophilic Fe3O4 nanoparticles simultaneously at the emulsion interface is achieved. On the basis of that, an account is given of the coalescence mechanism of the Pickering emulsion microreactors. Our work not only provides a novel Pickering emulsion microreactor platform for triggering chemical reactions in a nonintrusive and well-controlled way but also opens a promising avenue to construct multifunctional Pickering emulsions by assembly of versatile building block nanoparticles at the interface of emulsion droplets.
Collapse
Affiliation(s)
- Chun-Yan Xie
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, P.R. China
| | - Shi-Xin Meng
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, P.R. China
| | - Long-Hui Xue
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, P.R. China
| | - Rui-Xue Bai
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, P.R. China
| | - Xin Yang
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, P.R. China
| | - Yaolei Wang
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, P.R. China
| | - Zhong-Ping Qiu
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, P.R. China
| | - Bernard P Binks
- School of Mathematics and Physical Sciences, University of Hull , Hull HU6 7RX, U.K
| | - Ting Guo
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, P.R. China
| | - Tao Meng
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, P.R. China
| |
Collapse
|
36
|
Lazidis A, de Almeida Parizotto L, Spyropoulos F, Norton I. Microstructural design of aerated food systems by soft-solid materials. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2017.06.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
37
|
Oliveira NM, Reis RL, Mano JF. The Potential of Liquid Marbles for Biomedical Applications: A Critical Review. Adv Healthc Mater 2017; 6. [PMID: 28795516 DOI: 10.1002/adhm.201700192] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 05/20/2017] [Indexed: 12/31/2022]
Abstract
Liquid marbles (LM) are freestanding droplets covered by micro/nanoparticles with hydrophobic/hydrophilic properties, which can be manipulated as a soft solid. The phenomenon that generates these soft structures is regarded as a different method to generate a superhydrophobic behavior in the liquid/solid interface without modifying the surface. Several applications for the LM have been reported in very different fields, however the developments for biomedical applications are very recent. At first, the LM properties are reviewed, namely shell structure, LM shape, evaporation, floatability and robustness. The different strategies for LM manipulation are also described, which make use of magnetic, electrostatic and gravitational forces, ultraviolet and infrared radiation, and approaches that induce LM self-propulsion. Then, very distinctive applications for LM in the biomedical field are presented, namely for diagnostic assays, cell culture, drug screening and cryopreservation of mammalian cells. Finally, a critical outlook about the unexplored potential of LM for biomedical applications is presented, suggesting possible advances on this emergent scientific area.
Collapse
Affiliation(s)
- Nuno M. Oliveira
- 3B's Research Group - Biomaterials; Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, Zona Industrial da Gandra; 4805-017 Barco GMR Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Rui L. Reis
- 3B's Research Group - Biomaterials; Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, Zona Industrial da Gandra; 4805-017 Barco GMR Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - João F. Mano
- 3B's Research Group - Biomaterials; Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, Zona Industrial da Gandra; 4805-017 Barco GMR Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães Portugal
| |
Collapse
|
38
|
Wu C, Bertoni G, Marras S, Manna L, Colombo M. Selective Fe Promotion on Au Nanoparticles: An Efficient Way to Activate Au/SiO2
Catalysts for the CO Oxidation Reaction. ChemCatChem 2017. [DOI: 10.1002/cctc.201700533] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chunzheng Wu
- Department of Nanochemistry; Istituto Italiano di Tecnologia; Via Morego 30 16163 Genova Italy
- Dipartimento di Chimica e Chimica Industriale, Università di Genova; via Dodecaneso 31 16146 Genova Italy
| | - Giovanni Bertoni
- Department of Nanochemistry; Istituto Italiano di Tecnologia; Via Morego 30 16163 Genova Italy
- IMEM-CNR; Parco Area delle Scienze 37/A 43124 Parma Italy
| | - Sergio Marras
- Department of Nanochemistry; Istituto Italiano di Tecnologia; Via Morego 30 16163 Genova Italy
| | - Liberato Manna
- Department of Nanochemistry; Istituto Italiano di Tecnologia; Via Morego 30 16163 Genova Italy
| | - Massimo Colombo
- Department of Nanochemistry; Istituto Italiano di Tecnologia; Via Morego 30 16163 Genova Italy
| |
Collapse
|
39
|
Yu K, Zhang H, Hodges C, Biggs S, Xu Z, Cayre OJ, Harbottle D. Foaming Behavior of Polymer-Coated Colloids: The Need for Thick Liquid Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:6528-6539. [PMID: 28594563 DOI: 10.1021/acs.langmuir.7b00723] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The current study examined the foaming behavior of poly(vinylpyrrolidone) (PVP)-silica composite nanoparticles. Individually, the two components, PVP and silica nanoparticles, exhibited very little potential to partition at the air-water interface, and as such, stable foams could not be generated. In contrast, combining the two components to form silica-PVP core-shell nanocomposites led to good "foamability" and long-term foam stability. Addition of an electrolyte (Na2SO4) was shown to have a marked effect on the foam stability. By varying the concentration of electrolyte between 0 and 0.55 M, three regions of foam stability were observed: rapid foam collapse at low electrolyte concentrations, delayed foam collapse at intermediate concentrations, and long-term stability (∼10 days) at the highest electrolyte concentration. The observed transitions in foam stability were better understood by studying the microstructure and physical and mechanical properties of the particle-laden interface. For rapidly collapsing foams the nanocomposite particles were weakly retained at the air-water interface. The interfaces in this case were characterized as being "liquid-like" and the foams collapsed within 100 min. At an intermediate electrolyte concentration (0.1 M), delayed foam collapse over ∼16 h was observed. The particle-laden interface was shown to be pseudo-solid-like as measured under shear and compression. The increased interfacial rigidity was attributed to adhesion between interpenetrating polymer layers. For the most stable foam (prepared in 0.55 M Na2SO4), the ratio of the viscoelastic moduli, G'/G″, was found to be equal to ∼3, confirming a strongly elastic interfacial layer. Using optical microscopy, enhanced foam stability was assessed and attributed to a change in the mechanism of foam collapse. Bubble-bubble coalescence was found to be significantly retarded by the aggregation of nanocomposite particles, with the long-term destabilization being recognized to result from bubble coarsening. For rapidly destabilizing foams, the contribution from bubble-bubble coalescence was shown to be more significant.
Collapse
Affiliation(s)
- Kai Yu
- School of Chemical and Process Engineering, University of Leeds , Leeds, U.K
| | - Huagui Zhang
- School of Chemical and Process Engineering, University of Leeds , Leeds, U.K
| | - Chris Hodges
- School of Chemical and Process Engineering, University of Leeds , Leeds, U.K
| | - Simon Biggs
- Faculty of Engineering, Architecture and Information Technology, The University of Queensland , St. Lucia, QLD, Australia
| | - Zhenghe Xu
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, AB, Canada
| | - Olivier J Cayre
- School of Chemical and Process Engineering, University of Leeds , Leeds, U.K
| | - David Harbottle
- School of Chemical and Process Engineering, University of Leeds , Leeds, U.K
| |
Collapse
|
40
|
Anyfantakis M, Baigl D, Binks BP. Evaporation of Drops Containing Silica Nanoparticles of Varying Hydrophobicities: Exploiting Particle-Particle Interactions for Additive-Free Tunable Deposit Morphology. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:5025-5036. [PMID: 28446021 DOI: 10.1021/acs.langmuir.7b00807] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
We describe the systematic and quantitative investigation of a large number of patterns that emerge after the evaporation of aqueous drops containing fumed silica nanoparticles (NPs) of varying wettabilities for an extended particle concentration range. We show that for a chosen system, the dry pattern morphology is mainly determined by particle-particle interactions (Coulomb repulsion and hydrophobic attraction) in the bulk. These depend on both particle hydrophobicity and particle concentration within the drop. For high and intermediate particle concentrations, interparticle hydrophobic attraction is the dominant factor defining the deposit morphology. With increasing particle hydrophobicity, patterns ranging from rings to domes are observed, arising from the time needed for the drop to gel compared with the total evaporation time. On the contrary, drops of dilute suspensions maintain a finite viscosity during most of the drop lifetime, resulting in dry patterns that are predominantly rings for all particle hydrophobicities. In all investigated systems, the NP concentration corresponded to a large excess of NPs in the bulk compared with the maximal amount that could be adsorbed at available interfaces, making particle-interface interactions such as adsorption of hydrophobic NPs at the air-water interface a negligible contribution over bulk particle-particle interactions. This work emphasizes the advantage of particle surface chemistry in tuning both particle-particle interactions and particle deposition onto solid substrates in a robust manner, without the need for any additive such as a surfactant.
Collapse
Affiliation(s)
- Manos Anyfantakis
- École Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Department of Chemistry, PASTEUR , 24 rue Lhomond, 75005 Paris, France
- Sorbonne Universités, UPMC Univ Paris 06, ENS, CNRS, PASTEUR , 75005 Paris, France
| | - Damien Baigl
- École Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Department of Chemistry, PASTEUR , 24 rue Lhomond, 75005 Paris, France
- Sorbonne Universités, UPMC Univ Paris 06, ENS, CNRS, PASTEUR , 75005 Paris, France
| | - Bernard P Binks
- School of Mathematics and Physical Sciences, University of Hull , Hull HU6 7RX, U.K
| |
Collapse
|
41
|
Zhang Y, Wang S, Zhou J, Zhao R, Benz G, Tcheimou S, Meredith JC, Behrens SH. Interfacial Activity of Nonamphiphilic Particles in Fluid-Fluid Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4511-4519. [PMID: 28422501 DOI: 10.1021/acs.langmuir.7b00599] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Surfactants can adsorb in fluid-fluid interfaces and lower the interfacial tension. Like surfactants, particles with appropriate wettability can also adsorb in fluid-fluid interfaces. Despite many studies of particle adsorption at fluid interfaces, some confusion persists regarding the ability of (simple, nonamphiphilic) particles to reduce the interfacial tension. In the present work, the interfacial activity of silica nanoparticles at air-water and hexadecane-water interfaces and of ethyl cellulose particles at the interface of water with trimethylolpropane trimethacrylate was analyzed through pendant drop tensiometry. Our measurements strongly suggest that the particles do significantly affect the interfacial tension provided that they have a strong affinity to the interface by virtue of their wettability and that no energy barrier to adsorption prevents them from reaching the interface. A simplistic model that does not explicitly account for any particle-particle interactions is found to yield surprisingly good predictions for the effective interfacial tension in the presence of the adsorbed particles. We further propose that interfacial tension measurements, when combined with information about the particles' wetting properties, can provide a convenient way to estimate the packing density of particles in fluid-fluid interfaces. These results may help to understand and control the assembly of nonamphiphilic nanoparticles at fluid-fluid interfaces, which is relevant to applications ranging from surfactant-free formulations and food technology to oil recovery.
Collapse
Affiliation(s)
- Yi Zhang
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0100, United States
| | - Songcheng Wang
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0100, United States
| | - Jiarun Zhou
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0100, United States
| | - Ruiyang Zhao
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0100, United States
| | - Gregory Benz
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0100, United States
| | - Stephane Tcheimou
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0100, United States
| | - J Carson Meredith
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0100, United States
| | - Sven H Behrens
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0100, United States
| |
Collapse
|
42
|
Wang CY, Bu YH, Liu HJ, Guo SL. Preparation and characterization of core-shell oil absorption materials stabilized by modified fumed silica. JOURNAL OF POLYMER ENGINEERING 2017. [DOI: 10.1515/polyeng-2016-0075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The core-shell oil absorption material (OAM) with fumed silica shell was achieved from Pickering polymerization. The modified fumed silica wall could well stabilize both Pickering emulsion and Pickering polymerization. The particle size of encapsulated OAMs decreased with the increasing concentration of fumed silica and remained unchanged when the concentration was more than 1 wt.%. This fumed silica shell had little effect on the oil absorption rate of OAM. The importance was that the shell reversed the surface property and improved the alkali resistance of OAM. We believe that our core-shell OAMs could reach the self-healing ability of the oil well cement.
Collapse
|
43
|
Zhang H, Yu K, Cayre OJ, Harbottle D. Interfacial Particle Dynamics: One and Two Step Yielding in Colloidal Glass. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:13472-13481. [PMID: 27993029 DOI: 10.1021/acs.langmuir.6b03586] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The yielding behavior of silica nanoparticles partitioned at an air-aqueous interface is reported. Linear viscoelasticity of the particle-laden interface can be retrieved via a time-dependent and electrolyte-dependent superposition, and the applicability of the "soft glassy rheology" (SGR) model is confirmed. With increasing electrolyte concentration (φelect) in the aqueous subphase, a nonergodic state is achieved with particle dynamics arrested first from attraction induced bonding bridges and then from the cage effect of particle jamming, manifesting in a two-step yielding process under large amplitude oscillation strain (LAOS). The Lissajous curves disclose a shear-induced in-cage particle redisplacement within oscillation cycles between the two yielding steps, exhibiting a "strain softening" transitioning to "strain stiffening" as the interparticle attraction increases. By varying φelect and the particle spreading concentration, φSiO2, a variety of phase transitions from fluid- to gel- and glass-like can be unified to construct a state diagram mapping the yielding behaviors from one-step to two-step before finally exhibiting one-step yielding at high φelect and φSiO2.
Collapse
Affiliation(s)
- Huagui Zhang
- School of Chemical and Process Engineering, University of Leeds , Leeds LS2 9JT, U.K
| | - Kai Yu
- School of Chemical and Process Engineering, University of Leeds , Leeds LS2 9JT, U.K
| | - Olivier J Cayre
- School of Chemical and Process Engineering, University of Leeds , Leeds LS2 9JT, U.K
| | - David Harbottle
- School of Chemical and Process Engineering, University of Leeds , Leeds LS2 9JT, U.K
| |
Collapse
|
44
|
Bournival G, Ata S, Wanless EJ. The roles of particles in multiphase processes: Particles on bubble surfaces. Adv Colloid Interface Sci 2015; 225:114-33. [PMID: 26344866 DOI: 10.1016/j.cis.2015.08.008] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 08/16/2015] [Accepted: 08/16/2015] [Indexed: 10/23/2022]
Abstract
Particle-stabilised foams (or froths) form the fundamental framework of industrial processes like froth flotation. This review provides an overview of the effects of particles on bubble surfaces. The characteristics of the particles have a profound effect on the stability of the bubbles although the stabilisation mechanisms may differ. It is well known that layers of particles may provide a steric barrier between two interfaces, which prevents the coalescence of bubbles. Although perhaps considered of lesser importance, it is interesting to note that particles may affect the bubble surface and momentarily suppress coalescence despite being absent from the film separating two bubbles. Foams are at best metastable and coalescence occurs to achieve a state of minimum energy. Despite this, particles have been reported to stabilise bubbles for significant periods of time. Bubble coalescence is accompanied by a release of energy triggered by the sudden change in surface area. This produces a distinctive oscillation of the bubble surface, which may be influenced by the presence of incompressible particles yielding unique surface properties. A survey of the literature shows that the properties of these composite materials are greatly affected by the physicochemical characteristics of the particles such as hydrophobicity and size. The intense energy released during the coalescence of bubbles may be sufficient to expel particles from the bubble surface. It is noted that the detachment of particles may preferentially occur from specific locations on the bubble surface. Examination of the research accounts again reveals that the properties of the particles may affect their detachment upon the oscillation of the bubble surface. However, it is believed that most parameters affecting the detachment of particles are in fact modifying the dynamics of the three-phase line of contact. Both the oscillation of a coalescing bubble and the resulting detachment of particles are highly dynamic processes. They would greatly benefit from computer simulation studies.
Collapse
|
45
|
Bizmark N, Ioannidis MA. Effects of Ionic Strength on the Colloidal Stability and Interfacial Assembly of Hydrophobic Ethyl Cellulose Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:9282-9. [PMID: 26241005 DOI: 10.1021/acs.langmuir.5b01857] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Nanoparticle attachment at a fluid interface is a process that often takes place concurrently with nanoparticle aggregation in the bulk of the suspension. Here we investigate systematically the coupling of these processes with reference to the adsorption of aqueous suspensions of ethyl cellulose (EC) nanoparticles at the air-water interface. The suspension stability is optimal at neutral pH and in the absence of salt, conditions under which the electrostatic repulsion among EC nanoparticles is maximized. Nonetheless, hydrophobic attraction dominates particle-interface interactions, resulting in the irreversible adsorption of EC nanoparticles at the air-water interface. The addition of salt weakens the particle-particle and particle-interface repulsive electrostatic forces. This leads to destabilization of the suspension at ionic strengths of 0.05 M or greater but does not affect nanoparticle adsorption. The energy of adsorption, the surface tension and interface coverage at steady state, and the particle contact angle at the interface all remain unchanged by the addition of salt. These findings contribute to the fundamental understanding of colloidal systems and inform the utilization of EC nanocolloids, in particular for the stabilization of foams and emulsions.
Collapse
Affiliation(s)
- Navid Bizmark
- Department of Chemical Engineering, University of Waterloo , 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Marios A Ioannidis
- Department of Chemical Engineering, University of Waterloo , 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| |
Collapse
|
46
|
Bournival G, Ata S. Foaming and gas holdup of esterified nanoparticle dispersions in the presence of sodium chloride. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.01.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
47
|
Tzoumaki MV, Karefyllakis D, Moschakis T, Biliaderis CG, Scholten E. Aqueous foams stabilized by chitin nanocrystals. SOFT MATTER 2015; 11:6245-53. [PMID: 26154562 DOI: 10.1039/c5sm00720h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The aim of the present study was to explore the potential use of chitin nanocrystals, as colloidal rod-like particles, to stabilize aqueous foams. Chitin nanocrystals (ChN) were prepared by acid hydrolysis of crude chitin and foams were generated mainly by sonicating the respective dispersions. The foamability of the chitin nanocrystals was evaluated and the resulting foams were assessed for their stability, in terms of foam volume reduction and serum release patterns, during storage. Additionally, the samples were studied with light scattering and optical microscopy in order to explore the bubble size distribution and morphology of the foam. Nanocrystal concentration and charge density was varied to alter the packing of the crystals at the interface. At low concentrations of ChNs, foams were stable against coalescence and disproportionation for a period of three hours, whereas at higher concentrations, the foams were stable for several days. The enhanced stability of foams prepared with ChNs, compared to surfactant-stabilized foams, can be mainly attributed to the irreversible adsorption of the ChNs at the air-water interface, thereby providing Pickering stabilization. Both foam volume and stability of the foam were increased with an increase in ChNs concentration, and at pH values around the chitin's pKa (pH 7.0). Under these conditions, the ChNs show minimal electrostatic repulsion and therefore a higher packing of the nanocrystals is promoted. Moreover, decreased electrostatic repulsion enhances network formation between the ChNs in the aqueous films, thereby providing additional stability by gel formation. Overall, ChNs were proven to be effective in stabilizing foams, and may be useful in the design of Pickering-stabilized food grade foams.
Collapse
Affiliation(s)
- Maria V Tzoumaki
- Department of Food Science and Technology, Perrotis College, American Farm School, Marinou Antipa 54, P.O. Box 23, 551 02, Thessaloniki, Greece
| | | | | | | | | |
Collapse
|
48
|
Razavi S, Cao KD, Lin B, Lee KYC, Tu RS, Kretzschmar I. Collapse of Particle-Laden Interfaces under Compression: Buckling vs Particle Expulsion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:7764-75. [PMID: 26099031 DOI: 10.1021/acs.langmuir.5b01652] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Colloidal particles can bind to fluid interfaces with a capillary energy that is thousands of times the thermal energy. This phenomenon offers an effective route to emulsion and foam stabilization where the stability is influenced by the phase behavior of the particle-laden interface under deformation. Despite the vast interest in particle-laden interfaces, the key factors that determine the collapse of such an interface under compression have remained relatively unexplored. In this study, we illustrate the significance of the particle surface wettability and presence of electrolyte in the subphase on interparticle interactions at the interface and the resulting collapse mode. Various collapse mechanisms including buckling, particle expulsion, and multilayer formation are reported and interpreted in terms of particle-particle and particle-interface interactions.
Collapse
Affiliation(s)
- Sepideh Razavi
- †Department of Chemical Engineering, City College of City University of New York, New York, New York 10031, United States
| | | | | | | | - Raymond S Tu
- †Department of Chemical Engineering, City College of City University of New York, New York, New York 10031, United States
| | - Ilona Kretzschmar
- †Department of Chemical Engineering, City College of City University of New York, New York, New York 10031, United States
| |
Collapse
|
49
|
Nakayama S, Fukuhara K, Nakamura Y, Fujii S. Hollow Microspheres Fabricated from Aqueous Bubbles Stabilized with Latex Particles. CHEM LETT 2015. [DOI: 10.1246/cl.150161] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Saori Nakayama
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology
| | - Kenta Fukuhara
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology
| | - Yoshinobu Nakamura
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology
- Nanomaterials Microdevices Research Center, Osaka Institute of Technology
| | - Syuji Fujii
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology
| |
Collapse
|
50
|
Ettelaie R, Murray BS. Evolution of bubble size distribution in particle stabilised bubble dispersions: Competition between particle adsorption and dissolution kinetics. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.10.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|