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Jeon D, Seo B, Yang J, Shim WS, Kang NG, Park D, Kim JW. Substantial Confinement of Crystal Growth of Organic Crystalline Materials in Metal-Organic Membrane Microshells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8225-8232. [PMID: 38584357 DOI: 10.1021/acs.langmuir.4c00415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
This study proposes a robust microshell encapsulation system in which a metal-organic membrane (MOM), consisting of phytic acids (PAs) and metal ions, intrinsically prevents the molecular crystal growth of organic crystalline materials (OCMs). To develop this system, OCM-containing oil-in-water (O/W) Pickering emulsions were enveloped with the MOM, in which anionic pulp cellulose nanofiber (PCNF) primers electrostatically captured zinc ions at the O/W interface and chelated with PA, thus producing the MOM with a controlled shell thickness at the micron scale. We ascertained that the MOM formation fills and covers ∼75% of the surface pore size of PCNF films, which enhances the interfacial modulus by 2 orders of magnitude compared to that when treated with bare PCNFs. Through a feasibility test using a series of common OCMs, including ethylhexyl triazone, avobenzone, and ceramide, we demonstrated the excellent ability of our MOM microshell system to stably encapsulate OCMs while retaining their original molecular structures over time. These findings indicate that our MOM-reinforced microshell technology can be applied as a platform to substantially confine the crystal growth of various types of OCMs.
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Affiliation(s)
- Dongyoung Jeon
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Bokgi Seo
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jongryeol Yang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Woo Sun Shim
- R&D Campus, LG Household & Health Care, Seoul 07795, Republic of Korea
| | - Nae-Gyu Kang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Daehwan Park
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jin Woong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Cho H, Sung M, Choi J, Lee H, Prabakaran L, Kim JW. Ultralight, Robust, Thermal Insulating Silica Nanolace Aerogels Derived from Pickering Emulsion Templates. ACS APPLIED MATERIALS & INTERFACES 2024; 16:9255-9263. [PMID: 38337149 DOI: 10.1021/acsami.3c17200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Abstract
Synthesis of silica aerogel insulators with ultralight weight and strong mechanical properties using a simplified technique remains challenging for functional soft materials. This study introduces a promising method for the fabrication of mechanically reinforced ultralight silica aerogels by employing attractive silica nanolace (ASNLs)-armored Pickering emulsion templates. For this, silica nanolaces (SiNLs) are fabricated by surrounding a cellulose nanofiber with necklace-shaped silica nanospheres. In order to achieve amphiphilicity, which is crucial for the stabilization of oil-in-water Pickering emulsions, hydrophobic alkyl chains and hydrophilic amine groups are grafted onto the surface of SiNLs by silica coupling reactions. Freeze-drying of ASNLs-armored Pickering emulsions has established a new type of aerogel system. The ASNLs-supported mesoporous aerogel shows 3-fold greater compressive strength, 4-fold reduced heat transfer, and a swift heat dissipation profile compared to that of the bare ASNL aerogel. Additionally, the ASNL aerogel achieves an ultralow density of 8 mg cm-3, attributed to the pore architecture generated from closely jammed emulsion drops. These results show the potential of the ASNL aerogel system, which is ultralight, mechanically stable, and thermally insulating and could be used in building services, energy-saving technologies, and the aerospace industry.
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Affiliation(s)
- Hyungjoon Cho
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Minchul Sung
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jihyun Choi
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hyunsuk Lee
- Research and Innovation Center, AMOREPACIFIC, Yongin 17074, Republic of Korea
| | | | - Jin Woong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Yang J, Kim H, Sung M, Cho I, Kim JW. High Internal Phase Emulsion Stabilization through Restricted Interdrop Fusion across Water Drainage Channels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5670-5678. [PMID: 37053540 DOI: 10.1021/acs.langmuir.2c03190] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
This study introduces a promising approach to stabilize high internal phase emulsions (HIPEs) in which droplets are enveloped by octadecane (C18)-grafted bacterial cellulose nanofibers (BCNFdiC18), which are mainly surrounded by carboxylate anions and hydrophobically modified with C18 alkyl chains. For this purpose, BCNFdiC18, in which two octadecyl chains were grafted onto each of several cellulose unit rings on 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidized BCNFs, was fabricated using the Schiff base reaction. The wettability of BCNFdiC18 was adjusted by controlling the amount of the grafted C18 alkyl chain. Interfacial rheological analysis revealed that BCNFdiC18 enhanced the membrane modulus at the oil-water interface. We figured out that such a resilient interfacial membrane substantially prevented interdrop fusion across the water drainage channel formed between the jammed oil droplets, which was confirmed theoretically using the modified Stefan-Reynolds equation. These findings highlight that the use of surfactants in the form of nanofibers to form a rigid interfacial film plays a key role in hindering the interfusion of the internal phase and the collapse of the emulsion, which is essential for HIPE stabilization.
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Affiliation(s)
- Jongryeol Yang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hajeong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Minchul Sung
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Inje Cho
- HINATURE Inc., Incheon 21984, Republic of Korea
| | - Jin Woong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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El-Aooiti M, de Vries A, Rousseau D. Demulsification of water-in-oil emulsions stabilized with glycerol monostearate crystals. J Colloid Interface Sci 2023; 636:637-645. [PMID: 36680954 DOI: 10.1016/j.jcis.2022.12.150] [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: 10/13/2022] [Revised: 12/06/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022]
Abstract
HYPOTHESIS Colloidal particles can be used to generate water-in-oil (W/O) emulsions resistant against coalescence. Demulsification is possible with addition of low molecular weight surfactants to the emulsion continuous oil phase. Whether surfactants demulsify particle-stabilized W/O emulsions depends on their ability to modify the wettability of interfacially-bound particles. EXPERIMENTAL Crystals of glycerol monostearate (GMS) were prepared followed by water addition to generate GMS-stabilized W/O emulsions. The surfactants sorbitan monooleate (SMO), sorbitan monolaurate (SML), citric acid esters of monoglycerides (CITREM), sorbitan trioleate (STO), propylene glycol monolaurate (PgML), and polyglycerol polyricinoleate (PGPR) were added to the emulsion oil phase. Emulsion microstructure was characterized by light microscopy and cryo-scanning electron microscopy. Surfactant activity and crystal wetting were characterized by interfacial tension and three-phase contact angle measurements. Salt release from within the emulsions was used to assess demulsifier efficacy. FINDINGS Emulsions stabilized by platelet-like GMS crystals were generated. Of the six surfactants, SMO, SML, and CITREM were effective demulsifiers whereas STO, PgML, and PGPR were ineffective. The former three sufficiently modified the wettability of GMS crystals on the droplet surface, as they adsorbed to both the oil-water interface and GMS crystal surface. Emulsion destabilization was associated with faster NaCl release from the emulsion internal phase.
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Affiliation(s)
- Malek El-Aooiti
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario, Canada
| | - Auke de Vries
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario, Canada
| | - Dérick Rousseau
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario, Canada.
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Hazt B, Pereira Parchen G, Fernanda Martins do Amaral L, Rondon Gallina P, Martin S, Hess Gonçalves O, Alves de Freitas R. Unconventional and conventional Pickering emulsions: Perspectives and challenges in skin applications. Int J Pharm 2023; 636:122817. [PMID: 36905974 DOI: 10.1016/j.ijpharm.2023.122817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 02/27/2023] [Accepted: 03/06/2023] [Indexed: 03/13/2023]
Abstract
Pickering emulsions are free from molecular and classical surfactants and are stabilized by solid particles, creating long-term stability against emulsion coalescence. Additionally, these emulsions are both environmentally and skin-friendly, creating new and unexplored sensorial perceptions. Although the literature mostly describes conventional emulsions (oil-in-water), there are unconventional emulsions (multiple, oil-in-oil and water-in-water) with excellent prospects and challenges in skin application as oil-free systems, permeation enhancers and topical drug delivery agents, with various possibilities in pharmaceutical and cosmetic products. However, up to now, these conventional and unconventional Pickering emulsions are not yet available as commercial products. This review brings to the discussion some important aspects such as the use of phases, particles, rheological and sensorial perception, as well as current trends in the development of these emulsions.
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Affiliation(s)
- Bianca Hazt
- Chemistry Department, Universidade Federal do Paraná (UFPR), R. Coronel F. H. dos Santos, 210, Curitiba - 81531-980, PR, Brazil.
| | - Gabriela Pereira Parchen
- Department of Pharmacy, Universidade Federal do Paraná (UFPR), Av. Pref. Lothário Meissner, 632, Curitiba - 80210-170, PR, Brazil.
| | | | - Patrícia Rondon Gallina
- Department of Pharmacy, Universidade Federal do Paraná (UFPR), Av. Pref. Lothário Meissner, 632, Curitiba - 80210-170, PR, Brazil
| | - Sandra Martin
- Mackenzie School of Medicine, R. Padre Anchieta, 2770, Curitiba - 80730-000, PR, Brazil
| | - Odinei Hess Gonçalves
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; Post-Graduation Program of Food Technology, Federal University of Technology - Paraná, Via Rosalina Maria Dos Santos, 1233, Campo Mourão - 87301-899, PR, Brazil.
| | - Rilton Alves de Freitas
- Department of Pharmacy, Universidade Federal do Paraná (UFPR), Av. Pref. Lothário Meissner, 632, Curitiba - 80210-170, PR, Brazil.
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El-Wahab RMA, Fadel SM, Abdel-Karim AM, Eloui SM, Hassan ML. Novel green flexible rice straw nanofibers/zinc oxide nanoparticles films with electrical properties. Sci Rep 2023; 13:1927. [PMID: 36732552 PMCID: PMC9894901 DOI: 10.1038/s41598-023-28999-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/27/2023] [Indexed: 02/04/2023] Open
Abstract
In the current work, rice straw nanofibers (RSNF) with the width of elementary fibrils (~ 4-5 nm) were isolated from rice straw. The isolated nanofibers were used with zinc oxide nanoparticles (ZnONPs) to prepare flexible nanopaper films. Tensile strength and electrical properties of the prepared RSNF/ZnONPs nanopaper were investigated. The addition of ZnONPs to RSNF nanopaper did not deteriorate its mechanical properties and showed a slight improvement in tensile strength and Young's modulus of about 14% and 10%, respectively, upon the addition of 5% of ZnONPs. Microscopy investigation using scanning electron microscopy (SEM) showed the inclusion of the ZnONPs within the RSNF. Electrical conductivity and dielectric properties as a function of frequency at different temperatures were studied. The ac-electrical conductivity increased with frequency and fitted with the power law equation. The dc- electrical conductivity of the samples verified the Arrhenius equation and the activation energies varied in the range from 0.9 to 0.42 eV. The dielectric constant decreased with increasing frequency and increased with increasing temperature, probably due to the free movement of dipole molecular chains within the RSNF nanopaper. The high values of the dielectric constant and conductivity of the prepared nanopaper films support their use in electronic components.
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Affiliation(s)
- Rasha M Abd El-Wahab
- Physical Chemistry Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt
| | - Shaimaa M Fadel
- Cellulose and Paper Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt
| | - Amal M Abdel-Karim
- Physical Chemistry Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt
| | - Sherif M Eloui
- Inorganic Chemistry Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt
| | - Mohammad L Hassan
- Cellulose and Paper Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt.
- Advanced Materials and Nanotechnology Group, Centre of Excellence for Advanced Sciences, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt.
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Mid-temperature stability of oil-based WO2.9 nanofluids modified with hexadecyl trimethoxysilane: Experimental research. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Bae J, Seo HM, Shin K, Choi J, Lee DR, Jiang Z, Shen D, Kim JW. Hydrophobically Modified Cellulose Nanofibers-Enveloped Solid Lipid Microparticles for Improved Antioxidant Cargo Retention. Macromol Rapid Commun 2022; 43:e2100917. [PMID: 35213061 DOI: 10.1002/marc.202100917] [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: 12/25/2021] [Revised: 02/09/2022] [Indexed: 11/06/2022]
Abstract
This study introduces a cellulose nanofiber surfactant system, in which the surface is hydrophobically modified with different alkyl chain structures for the effective envelopment of solid lipid microparticles (SLMs). To endow bacterial cellulose nanofibers (BCNFs) with excellent ability to assemble at the lipid-water interface, alkyl chains with designated molecular structures, such as decane, didecane, and eicosane, are covalently grafted onto the BCNF surface. Interfacial tension and interfacial rheology measurements indicate that dialkyl chain-grafted BCNFs (diC10 BCNF) exhibit strong interfibrillar association at the interface. The formation of a dense and tough fibrillary membrane contributes significantly to the enveloping of the SLMs, regardless of the lipid type. Because the diC10 BCNF-enveloped SLMs exhibit a core molecular crystalline phase at the microscale, they can immobilize an oil-soluble antioxidant while maintaining its long-term storage stability. These findings show that our cellulose-surfactant-based SLM technology is applicable to the stabilization and formulation of readily denatured active ingredients. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Jiwoo Bae
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Hye Min Seo
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Kyounghee Shin
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.,Convergence Research Center for Energy and Environmental Sciences, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Jihyun Choi
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Dong Ryeol Lee
- BASF Advanced Chemicals CO., Ltd., Shanghai, 200137, China
| | - Zhiting Jiang
- BASF Advanced Chemicals CO., Ltd., Shanghai, 200137, China
| | - Di Shen
- BASF Advanced Chemicals CO., Ltd., Shanghai, 200137, China
| | - Jin Woong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
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Ono M, Nonomura Y, Gonome H. Optical Properties of Pickering Emulsions and Foams. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:1440-1447. [PMID: 35043620 DOI: 10.1021/acs.langmuir.1c02599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A significant number of studies have been conducted on particle adhesion phenomena as pertaining to the oil-water interface of droplets and the air-liquid interface of bubbles, known as Pickering emulsions and Pickering foams, respectively. However, few of the literature reports have discussed the optical properties of these materials. In this study, the optical properties of Pickering particles were calculated by using an electromagnetic field analysis via a finite element method, and their optical responses are discussed. The changes in scattering due to the differences in the number of adhering particles and particle size are compared for three composition systems: an oil-in-water Pickering emulsion, a water-in-oil Pickering emulsion, and a Pickering foam. It was determined that changes in the amount of scattering are due to the mixing of the phases in the scattering field. This effect is more pronounced when the size of the scatterer is significantly smaller than the wavelength. For systems with particles larger than the wavelength, changes in the amount of scattering were suppressed because of destructive interference of the electromagnetic waves. This work revealed that the variation in the amount of scattering due to the constituent material and size of the Pickering particles is affected by two different factors, and the change in the amount of scattering is 10 times greater than in a uniformly dispersed system.
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Affiliation(s)
- Mizuho Ono
- Graduate School of Science and Engineering, Yamagata University, Yamagata 992-8510, Japan
| | - Yoshimune Nonomura
- Graduate School of Science and Engineering, Yamagata University, Yamagata 992-8510, Japan
| | - Hiroki Gonome
- Graduate School of Science and Engineering, Yamagata University, Yamagata 992-8510, Japan
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Wang S, Chen W, Wang L, Yao J, Zhu G, Guo B, Militky J, Venkataraman M, Zhang M. Multifunctional nanofiber membrane with anti-ultraviolet and thermal regulation fabricated by coaxial electrospinning. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.01.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Xu C, Chen Z, Wang C, Chen K. Fabrication of Dual Self-Healing Multifunctional Coating Based on Multicompartment Microcapsules. ACS APPLIED MATERIALS & INTERFACES 2021; 13:59298-59309. [PMID: 34872247 DOI: 10.1021/acsami.1c19304] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
By designing and preparing multifunctional materials exhibiting self-healing ability, problems related to their durability outdoors can be solved. This study, inspired by the self-healing mechanism of natural creatures, successfully prepared a dual self-healing multifunctional coating using temperature stimuli-responsive multicompartment microcapsules. Phase change materials (PCMs) were employed to load multicompartment microcapsules that were produced through Pickering emulsion polymerization by applying hydrophobic materials encapsulated by titanium dioxide (TiO2) nanocapsules as Pickering emulsifiers. The multifunctional coating produced using microcapsules and self-healing waterborne polyurethane (WPU) exhibited thermal insulation and antireflection properties, which was attributed to the application of PCMs and TiO2, and it also achieved remarkable superhydrophobicity. Moreover, this coating exhibited the intrinsic and superficial dual self-healing ability, which was attributed to the release of hydrophobic materials from microcapsules and the self-healing ability of WPU. This study can be referenced to guide the fabrication of high-performance self-healing materials, and it can contribute to the long-term use of multifunctional coatings.
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Affiliation(s)
- Changyue Xu
- Key Laboratory of Eco-Textiles, Ministry of Education, School of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China
| | - Zhuo Chen
- Key Laboratory of Eco-Textiles, Ministry of Education, School of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China
| | - Chaoxia Wang
- Key Laboratory of Eco-Textiles, Ministry of Education, School of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China
| | - Kunlin Chen
- Key Laboratory of Eco-Textiles, Ministry of Education, School of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China
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Park D, Kim H, Kim JW. Microfluidic production of monodisperse emulsions for cosmetics. BIOMICROFLUIDICS 2021; 15:051302. [PMID: 34733378 PMCID: PMC8550801 DOI: 10.1063/5.0057733] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 10/11/2021] [Indexed: 05/06/2023]
Abstract
Droplet-based microfluidic technology has enabled the production of emulsions with high monodispersity in sizes ranging from a few to hundreds of micrometers. Taking advantage of this technology, attempts to generate monodisperse emulsion drops with high drug loading capacity, ordered interfacial structure, and multi-functionality have been made in the cosmetics industry. In this article, we introduce the practicality of the droplet-based microfluidic approach to the cosmetic industry in terms of innovation in productivity and marketability. Furthermore, we summarize some recent advances in the production of emulsion drops with enhanced mechanical interfacial stability. Finally, we discuss the future prospects of microfluidic technology in accordance with consumers' needs and industrial attributes.
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Affiliation(s)
- Daehwan Park
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hajeong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jin Woong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Cao L, Wang L, Xu L, Shen Y, Xie M, Hao H. Controllable growth of Cu-Bi co-doped ZnO nanospheres on cotton fabrics and a study on their photocatalytic performance in visible light. RSC Adv 2021; 11:29416-29425. [PMID: 35479526 PMCID: PMC9040613 DOI: 10.1039/d1ra05317e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 08/17/2021] [Indexed: 11/21/2022] Open
Abstract
Cu-Bi co-doped ZnO nanospheres were obtained by adopting Bi and Cu to dope ZnO to improve their photocatalytic performance in the visible region. Cu-Bi co-doped ZnO nanospheres were successfully grown on the surface of cotton fabric by a sol-gel assisted hydrothermal method with citric acid as a morphology control agent. The obtained products were characterized by X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance spectroscopy (DRS). The results showed that the size of ZnO nanospheres was about 200 nm and doping with Cu and Bi did not change their morphology. Cu-Bi co-doped ZnO nanospheres presented a hexagonal wurtzite structure with high crystallinity; meanwhile, their band gap was also obviously reduced due to doping, from 3.24 eV to 2.82 eV. Cu-Bi co-doped ZnO nanospheres endowed the cotton fabric with excellent UV (ultraviolet) resistance with a UPF (Ultraviolet Protection Factor) value of 283.54 after 40 washes. Cotton fabric with 3% Bi-5% Cu co-doped ZnO on the surface showed 98.66% degradation of methylene blue (MB) solution under visible light irradiation for 150 min, indicating remarkable photocatalytic performance.
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Affiliation(s)
- Liuqi Cao
- School of Textiles and Fashion, Shanghai University of Engineering Science Shanghai 201620 China +86-17856927352
| | - Liming Wang
- School of Textiles and Fashion, Shanghai University of Engineering Science Shanghai 201620 China +86-17856927352
| | - Lihui Xu
- School of Textiles and Fashion, Shanghai University of Engineering Science Shanghai 201620 China +86-17856927352
| | - Yong Shen
- School of Textiles and Fashion, Shanghai University of Engineering Science Shanghai 201620 China +86-17856927352
| | - Mingrui Xie
- School of Textiles and Fashion, Shanghai University of Engineering Science Shanghai 201620 China +86-17856927352
| | - Huimin Hao
- School of Textiles and Fashion, Shanghai University of Engineering Science Shanghai 201620 China +86-17856927352
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Li C, Wang C, Li Z, Cao Z, Xie Y, Xue M, Zhao J. Preparation of ZnO Nanoparticle/Acrylic Resin Superhydrophobic Coating via Blending Method and Its Wear Resistance and Antibacterial Properties. MATERIALS 2021; 14:ma14143775. [PMID: 34300692 PMCID: PMC8305409 DOI: 10.3390/ma14143775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/01/2021] [Accepted: 07/01/2021] [Indexed: 11/16/2022]
Abstract
Herein, a facile method for the preparation of an acrylic resin-based superhydrophobic coating is provided. Firstly, ZnO nanoparticles were modified with silane to obtain hydrophobic ZnO, which was then homogeneously blended with acrylic resin. Subsequently, the mixture was sprayed on an aluminum sheet to form a cured coating. The surface composition and morphology of the coating were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The hydrophobicity, wear resistance, and antibacterial properties of the prepared samples were tested. The optimized hydrophobicity was achieved with 10 wt% modification agent and resin-to-ZnO mass ratio of 1:4, exhibiting contact and sliding angles of 168.11° and 7.2°, respectively. Wear resistance was insufficient with a low resin content, while it grew with the increase in the resin content. However, when the resin content was excessively high, the hydrophobicity was reduced because the resin could wrap the modified ZnO nanoparticles and decrease the number of hydrophobic groups on the surface. Compared with the pure acrylic resin coating, the ZnO nanoparticle/acrylic resin superhydrophobic coating demonstrated a significant enhancement in the antibacterial properties.
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Affiliation(s)
- Changquan Li
- School of Materials and Engineering, Jiangsu University of Technology, Changzhou 213001, China; (C.L.); (C.W.); (Z.L.)
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China; (Z.C.); (M.X.)
| | - Chen Wang
- School of Materials and Engineering, Jiangsu University of Technology, Changzhou 213001, China; (C.L.); (C.W.); (Z.L.)
| | - Ziang Li
- School of Materials and Engineering, Jiangsu University of Technology, Changzhou 213001, China; (C.L.); (C.W.); (Z.L.)
| | - Zhenjun Cao
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China; (Z.C.); (M.X.)
| | - Yu Xie
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China; (Z.C.); (M.X.)
- Correspondence: (Y.X.); (J.Z.)
| | - Mingshan Xue
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China; (Z.C.); (M.X.)
| | - Jinsheng Zhao
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
- Correspondence: (Y.X.); (J.Z.)
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Lu T, Deng Y, Cui J, Cao W, Qu Q, Wang Y, Xiong R, Ma W, Lei J, Huang C. Multifunctional Applications of Blow-Spinning Setaria viridis Structured Fibrous Membranes in Water Purification. ACS APPLIED MATERIALS & INTERFACES 2021; 13:22874-22883. [PMID: 33944545 DOI: 10.1021/acsami.1c05667] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
With increasing water pollution and human health problems caused by oily wastewater, the fabrication of oil-water separation materials has become an urgent task. However, most of the reported materials have a single function and poor performance. In this paper, a multifunctional zinc oxide/polyaniline/polyacrylonitrile (ZnO/PANI/PAN) nanofibrous membrane with needle-like ZnO nanorods was prepared by in situ synthesis of PANI and a hydrothermal reaction on a highly stable self-standing PAN blow-spinning fibrous membrane. Due to the electronic synergistic effect of ZnO and PANI, the fibrous membrane exhibits excellent antibacterial activity and visible-light degradation ability of organic dyes. Moreover, the micro-/nanosized pores of the ZnO/PANI/PAN fibrous membranes also guarantee its excellent emulsion separation performance, including an ultrahigh surfactant-free emulsion permeate flux (∼8597.40 L/(m2 h)), ultrahigh surfactant-stabilized emulsion permeate flux (∼2253.50 L/(m2 h)), and excellent separation efficiency (above 99%). Furthermore, the composite membrane maintains stable underwater superoleophobicity and hydrophilicity under adverse conditions, shows good biological safety, and is harmless to the water environment. These excellent properties endow the ZnO/PANI/PAN nanofibrous membranes with great potential in treating oily wastewater.
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Affiliation(s)
- Tao Lu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Yankang Deng
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Jiaxin Cui
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Wenxuan Cao
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Qingli Qu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Yulin Wang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Ranhua Xiong
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Wenjing Ma
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Jiandu Lei
- Beijing Key Laboratory of Lignocellulosic Chemistry, and MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, P. R. China
| | - Chaobo Huang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, P. R. China
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