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Zhang S, Xin M, Wang Z, Dong X, Yang C, Liu H, Fan H, Liu T, Wang D. Tiger Nut Oil-Based Oil Gel: Preparation, Characterization, and Storage Stability. Foods 2023; 12:4087. [PMID: 38002145 PMCID: PMC10670500 DOI: 10.3390/foods12224087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/23/2023] [Accepted: 10/19/2023] [Indexed: 11/26/2023] Open
Abstract
In this study, Tiger nut (Cyperus esculentus L.) oil-based oleogels were prepared using the emulsion template method with whey protein (WPI; 0.5-2.5% (w/v) and Xanthan gum (XG; 0.1-0.5% (w/v). The microstructure of the oleogels obtained from the high internal phase emulsion (HIPE) and an emulsion after further shearing were observed using an optical microscope and laser confocal microscopy. A series of rheological tests were conducted to evaluate the effect of WPI and XG concentrations on the strength of the emulsion and oleogel. The texture, oil holding capacity, and oxidative stability of oleogels were characterized. The results showed that XG alone could not form oleogel, while the concentration of WPI had more effect than XG. When WPI was at a fixed concentration, the viscoelasticity of HIPE increased with the addition of XG. This was due to the complexation of WPI and XG, forming a stable gel network between the tight emulsion droplets and thus giving it a higher viscoelasticity. With an increase in WPI concentration, the stability and viscoelasticity of the emulsion were increased, and the oil-holding capacity and gel strength of the oleogels were enhanced. Moreover, the addition of XG could significantly enhance the stability and viscoelasticity of the emulsion (p < 0.05), and an increase in the concentration had a positive effect on it. The oleogels showed high gel strength (G' > 15,000 Pa) and good thixotropic recovery when the XG concentration was higher than 0.3% (w/v). WPI (2.0%) and XG (>0.3%) could be used to obtain HIPE with good physicochemical and viscoelastic properties, which in turn lead to oleogels with minimal oil loss, viscoelastic and thixotropic recovery, and temperature stability. Compared with tiger nut oil-based oleogel, tiger nut oil contained more polyunsaturated fatty acids, which were more easily decomposed through oxidation during storage and had lower oxidation stability. This study provides a reference for the preparation of oleogels from food-approved polymers and provides additional theoretical support for their potential application as solid fat substitutes.
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Affiliation(s)
- Shanshan Zhang
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.Z.); (C.Y.)
- Engineering Research Center of Grain Deep-Processing and High-Effeciency Utilization of Jilin Province, Changchun 130118, China
| | - Minghang Xin
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.Z.); (C.Y.)
- Scientific Research Base of Edible Mushroom Processing Technology Integration of Ministry of Agriculture and Rural Affairs, Changchun 130118, China
| | - Zhiyu Wang
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.Z.); (C.Y.)
- Scientific Research Base of Edible Mushroom Processing Technology Integration of Ministry of Agriculture and Rural Affairs, Changchun 130118, China
| | - Xiaolan Dong
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.Z.); (C.Y.)
- Key Laboratory of Technological Innovations for Grain Deep-Processing and High-Effeciency Utilization of By-Products of Jilin Province, Changchun 130118, China
| | - Chenhe Yang
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.Z.); (C.Y.)
- Key Laboratory of Technological Innovations for Grain Deep-Processing and High-Effeciency Utilization of By-Products of Jilin Province, Changchun 130118, China
| | - Hongcheng Liu
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.Z.); (C.Y.)
- Engineering Research Center of Grain Deep-Processing and High-Effeciency Utilization of Jilin Province, Changchun 130118, China
| | - Hongxiu Fan
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.Z.); (C.Y.)
- Key Laboratory of Technological Innovations for Grain Deep-Processing and High-Effeciency Utilization of By-Products of Jilin Province, Changchun 130118, China
| | - Tingting Liu
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.Z.); (C.Y.)
- Engineering Research Center of Grain Deep-Processing and High-Effeciency Utilization of Jilin Province, Changchun 130118, China
| | - Dawei Wang
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.Z.); (C.Y.)
- Engineering Research Center of Grain Deep-Processing and High-Effeciency Utilization of Jilin Province, Changchun 130118, China
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Xu K, Cao L, Wang Z, Chen LP. Heparin-Mimetic Chitooligosaccharides-Based Monoliths Obtained from C/W Emulsions: Hemocompatibility and Toxin Removal Ability. ACS Biomater Sci Eng 2023; 9:5610-5621. [PMID: 37703897 DOI: 10.1021/acsbiomaterials.3c00833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
Hemoperfusion (HP) is one of the most prominent therapies for treating uremia, hyperbilirubinemia, and acute drug toxicity. The comprehensive performance of currently used porous HP adsorbents needs to be improved due to the impediment to their synthesis strategy. Herein, green carbon dioxide-in-water high internal phase emulsions (C/W HIPEs) were utilized and emulsified with poly(vinyl alcohol) (PVA) for the formation of a heparin-mimetic chitosan oligosaccharides/poly(acrylamide-co-sodium 4-styrenesulfonate) [COS/P(AM-co-SSS)] monolith, which exhibited good mechanical properties, stable swelling performance, hydrophilic properties, anticoagulant effect, and low hemolysis. It showed a strong toxin adsorption capacity (415.2 mg/g for creatinine, 199.3 mg/g for urea, 279.5 mg/g for bilirubin, and 160 mg/g for tetracycline). The adsorption process of porous COS/P(AM-co-SSS) followed the pseudo-second-order kinetic and Langmuir isotherm models. Moreover, the porous materials had a strong electrostatic force on creatinine. The removal of creatinine by simulated in vitro blood perfusion was 80.2% within 30 min. This work provides a green preparation strategy for developing novel HP materials, highlighting their potential application value in blood and environmental purification.
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Affiliation(s)
- Kaibo Xu
- School of Science, Xihua University, Chengdu 610039, P. R. China
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry, Xinjiang University, Urumqi 830017 P. R. China
| | - Liqin Cao
- School of Science, Xihua University, Chengdu 610039, P. R. China
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry, Xinjiang University, Urumqi 830017 P. R. China
| | - Zhouyu Wang
- School of Science, Xihua University, Chengdu 610039, P. R. China
| | - Liu-Ping Chen
- School of Chemistry, Sun Yat-sen University, Guangdong 510275, Guangzhou, China
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Li J, Guo X, Liu Z, Yang Z, Ai C, Song S, Zhu B. Stabilization of High Internal Phase Oil-in-Water Emulsions Using "Whole" Gracilaria lemaneiformis Slurry. Foods 2023; 12:3464. [PMID: 37761173 PMCID: PMC10527730 DOI: 10.3390/foods12183464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/10/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
In this study, a Gracilaria lemaneiformis slurry (GLS) was prepared using low-energy mechanical shearing. The resulting GLS, which was rich in polysaccharides, was utilized as an effective stabilizer for oil-in-water emulsions. The microstructures and stability of the resulting emulsions were controlled by adjusting the emulsion formulations, including Gracilaria lemaneiformis (GL) mass concentration and oil volume fraction (φ). The optimized GL mass concentration and φ conditions yielded high internal phase emulsions (HIPEs) with gel-like textures. Moreover, the presence of exogenous Ca2+ resulted in bridging structures in the emulsions, enhancing their viscoelasticity and forming a robust physical barrier against droplet coalescence. Our findings highlight the effectiveness of the GLS as an emulsifier for stabilizing HIPEs. Notably, this method relies solely on physical processes, aligning with the desirability of avoiding chemical additives, particularly in the food industry.
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Affiliation(s)
- Jinjin Li
- Shenzhen Key Laboratory of Food Nutrition and Health, College of Chemistry and Environmental Engineering and Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China; (J.L.); (Z.L.); (B.Z.)
| | - Xiaoming Guo
- Shenzhen Key Laboratory of Food Nutrition and Health, College of Chemistry and Environmental Engineering and Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China; (J.L.); (Z.L.); (B.Z.)
| | - Zhengqi Liu
- Shenzhen Key Laboratory of Food Nutrition and Health, College of Chemistry and Environmental Engineering and Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China; (J.L.); (Z.L.); (B.Z.)
| | - Zhihua Yang
- Shenzhen Institute of Standards and Technology, Shenzhen 518033, China
| | - Chunqing Ai
- National & Local Joint Engineering Laboratory for Marine Bioactive Polysaccharide Development and Application, Dalian 116034, China; (C.A.); (S.S.)
| | - Shuang Song
- National & Local Joint Engineering Laboratory for Marine Bioactive Polysaccharide Development and Application, Dalian 116034, China; (C.A.); (S.S.)
| | - Beiwei Zhu
- Shenzhen Key Laboratory of Food Nutrition and Health, College of Chemistry and Environmental Engineering and Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China; (J.L.); (Z.L.); (B.Z.)
- National & Local Joint Engineering Laboratory for Marine Bioactive Polysaccharide Development and Application, Dalian 116034, China; (C.A.); (S.S.)
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Zheng S, Lu M, Xiao J, Zhang X, Li J, Zhang H, Zhang C, Cao Y, Lan Y. A Novel Strategy for Preparation of Rice Bran Protein Oleogels based on High Internal Phase Emulsion Template. J Sci Food Agric 2023. [PMID: 37128129 DOI: 10.1002/jsfa.12672] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/23/2023] [Accepted: 05/02/2023] [Indexed: 05/03/2023]
Abstract
BACKGROUND Oleogels have been extensively explored as fat substitutes with no trans fatty acids and low saturated fatty acids in recent years due to increased health problems found to be related to the intake of trans and saturated fatty acids. RESULTS Herein, high internal phase emulsion (HIPE) stabilized by rice bran protein (RBP) was prepared and further utilized as a template for preparation of RBP oleogels. RBP HIPE with strongest rheological properties was obtained at pH 5.0, due to appropriate structural deformation, surface charge and a high three-phase contact angle at this pH. However, RBP oleogels prepared at pH 9.0 exhibited the highest yield stress after drying process. At this pH, RBP showed higher resistance to deformation caused by water evaporation. This highlighted the importance of structural stability of protein network on rheological properties of the resultant oleogels. Furthermore, with an increase in drying temperature, RBP oleogels exhibited higher yield stress and gel strength, since water was better removed due to enhanced capability to overcome the capillary pressure of emulsion. CONCLUSIONS This study further revealed the structure-activity relationship between protein, HIPE and oleogel, and provided theoretical support for development of protein-based oleogel. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Songbai Zheng
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, P.R. China, 510642
| | - Muwen Lu
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, P.R. China, 510642
| | - Jie Xiao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, P.R. China, 510642
| | - Xiaohui Zhang
- Guangdong Meiweixian Flavoring Foods Co., Ltd, Zhongshan, Guangdong, P.R. China, 528437
| | - Jie Li
- Guangdong Meiweixian Flavoring Foods Co., Ltd, Zhongshan, Guangdong, P.R. China, 528437
| | - Hao Zhang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, P.R. China, 510642
| | - Chenhao Zhang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, P.R. China, 510642
| | - Yong Cao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, P.R. China, 510642
| | - Yaqi Lan
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, P.R. China, 510642
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Yin Z, Zhang S, Liu X. Hierarchical Emulsion-Templated Monoliths (polyHIPEs) as Scaffolds for Covalent Immobilization of P. acidilactici. Polymers (Basel) 2023; 15:polym15081862. [PMID: 37112009 PMCID: PMC10145616 DOI: 10.3390/polym15081862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 03/30/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
The immobilized cell fermentation technique (IMCF) has gained immense popularity in recent years due to its capacity to enhance metabolic efficiency, cell stability, and product separation during fermentation. Porous carriers used as cell immobilization facilitate mass transfer and isolate the cells from an adverse external environment, thus accelerating cell growth and metabolism. However, creating a cell-immobilized porous carrier that guarantees both mechanical strength and cell stability remains challenging. Herein, templated by water-in-oil (w/o) high internal phase emulsions (HIPE), we established a tunable open-cell polymeric P(St-co-GMA) monolith as a scaffold for the efficient immobilization of Pediococcus acidilactici (P. acidilactici). The porous framework's mechanical property was substantially improved by incorporating the styrene monomer and cross-linker divinylbenzene (DVB) in the HIPE's external phase, while the epoxy groups on glycidyl methacrylate (GMA) supply anchoring sites for P. acidilactici, securing the immobilization to the inner wall surface of the void. For the fermentation of immobilized P. acidilactici, the polyHIPEs permit efficient mass transfer, which increases along with increased interconnectivity of the monolith, resulting in higher L-lactic acid yield compared to that of suspended cells with an increase of 17%. The relative L-lactic acid production is constantly maintained above 92.9% of their initial relative production after 10 cycles, exhibiting both its great cycling stability and the durability of the material structure. Furthermore, the procedure during recycle batch also simplifies downstream separation operations.
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Affiliation(s)
- Zhengqiao Yin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Shengmiao Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiucai Liu
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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Eslek A, Mert HH, Sözbir M, Alaasar M, Mert EH. Hierarchical Macroporous PolyDCPD Composites from Surface-Modified Calcite-Stabilized High Internal Phase Emulsions. Polymers (Basel) 2023; 15. [PMID: 36616580 DOI: 10.3390/polym15010228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/25/2022] [Accepted: 11/28/2022] [Indexed: 01/03/2023] Open
Abstract
High Internal Phase Emulsions (HIPEs) of dicyclopentadiene (DCPD) were prepared using mixtures of surface-modified calcite (mCalcite) and a non-ionic surfactant. Twelve different emulsion formulations were created using an experimental design methodology. Three distinctive levels of the internal phase ratio, the amount of mCalcite loading, and the surfactant were used to prepare the HIPEs. Accordingly, macroporous polyDCPD composites were synthesized by performing ring-opening metathesis polymerization (ROMP) on the HIPEs. The variations in the morphological and physical properties of the composites were investigated in terms of experimental parameters. In the end, five different model equations were derived with a confidence level of 95%. The main and binary interaction effects of the experimental parameters on the responses, such as the average cavity size, interconnecting pore size, specific surface area, foam density, and compression modulus, were demonstrated. The synergistic interaction between the amount of surfactant, the amount of mCalcite loading, and the internal phase ratio appeared to have a dominant role in the average cavity diameter. The solo effect of the internal phase ratio on the interconnecting pore size, foam density, and compression modulus was confirmed. In addition, it was demonstrated that the specific surface area of the composites was mainly changed depending on the amount of mCalcite loading.
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Zhao Y, Wang P, Xu Y, Zeng X, Xu X. A Study on the Mechanisms of Nanoparticle-Stabilized High Internal Phase Emulsions Constructed by Cross-Linking Egg White Protein Isolate with Different Transglutaminase Concentrations. Foods 2022; 11:foods11121765. [PMID: 35741964 PMCID: PMC9222873 DOI: 10.3390/foods11121765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/03/2022] [Accepted: 06/06/2022] [Indexed: 02/01/2023] Open
Abstract
There is an increasing interest in the development of high internal phase emulsions (HIPE) stabilized by food-grade nanoparticles due to their potential applications in the food industry. In this study, cross-linked egg white protein isolates (cEPIs) are prepared by adding 10 u/g, 20 u/g, and 40 u/g of transglutaminase (TG), and the impacts of interface properties of cEPIs and emulsifying of HIPEs are investigated. Relative to the native EPI, the cEPIs have more irregular and agglomerated morphology, and the turbidity and hydrophobicity are significantly increased. The particle size and zeta potential of cEPIs considerably varied with the addition of TG. In HIPE, the formation, physical properties, and microstructure are characterized by visual observations, the Turbiscan stability index, and CLSM. The results indicated that stable and gel-like HIPEs are formed by cEPIs at oil internal phase (φ) values of 0.75–0.90. Especially for the enzyme additions of 20 u/g, the cEPIs had the best storage stability and the lowest TSI value (2.50) and formed a gel network structure at φ values of 0.9 microscopically. Overall, this study can enrich the theoretical frame of interface properties by enzyme treatment. Besides, it would be of great importance for the research of HIPE stabilized by cEPIs appropriate to be applied in food formulations.
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Affiliation(s)
| | | | | | | | - Xinglian Xu
- Correspondence: ; Tel.: +86-(0)25-8439-5689 or +86-(0)25-8439-5939
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Speltini A, Tripodo G, Rinaldi F, Massolini G, Profumo A, Calleri E. Carbon nanotubes-modified poly- high internal phase emulsions for pharmaceuticals pre-concentration and determination. J Pharm Biomed Anal 2022; 207:114391. [PMID: 34624819 DOI: 10.1016/j.jpba.2021.114391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/16/2021] [Accepted: 09/18/2021] [Indexed: 11/15/2022]
Abstract
This paper deals with the preparation of new composites between polymerized/crosslinked high internal phase emulsions (polyHIPEs) and carbon nanotubes (CNTs), specifically designed for pharmaceutical analytical applications. While the composition of the polyHIPEs was maintained constant, the amount of CNTs was varied from 0.5% to 1% w/v. As proof-of-concept, the materials were tested for solid-phase extraction. Three drugs with different physical-chemical properties, namely 17β-estradiol (E2), Naproxen (NPX), and Oxprenolol (OXP) were selected as probes to investigate the adsorption/elution conditions on/from the CNT/polyHIPE composites for future analytical applications. The sorption and desorption behavior of the three analytes was studied at different pH values. The experimental results are coherent with chemistry of the support and the physical-chemical characteristics of the considered analytes. The incorporation of CNTs into the polyHIPEs network strongly influences the sorption properties of these materials.
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Affiliation(s)
- Andrea Speltini
- Department of Chemistry, University of Pavia, Via Taramelli 12, Pavia 27100, Italy
| | - Giuseppe Tripodo
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, Pavia 27100, Italy
| | - Francesca Rinaldi
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, Pavia 27100, Italy
| | - Gabriella Massolini
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, Pavia 27100, Italy
| | - Antonella Profumo
- Department of Chemistry, University of Pavia, Via Taramelli 12, Pavia 27100, Italy
| | - Enrica Calleri
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, Pavia 27100, Italy.
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Acosta Ortiz R, Reinoza Dávila JA, Guerrero Santos R. Development of Photocurable Polyacrylate-Based PolyHIPEs and the Study of the Kinetics of Photopolymerization, and of Their Thermal, Mechanical and Hydrocarbon Absorption Properties. Polymers (Basel) 2021; 13:3497. [PMID: 34685256 DOI: 10.3390/polym13203497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 11/17/2022] Open
Abstract
This article describes a comprehensive study to obtain polymeric porous materials via a photopolymerization technique, using acrylate-based high internal phase emulsions (HIPEs), as a template. The aim of obtaining these polymers was to use them as hydrocarbon absorbing materials. Kinetics of photopolymerization of the acrylate monomers and of the HIPEs were conducted to optimize the process. The obtained monoliths were characterized by thermal analysis such as differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The morphology and surface area were analyzed by scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) analysis. The compression properties of the materials were determined, as well as their absorption properties of hydrocarbons such as hexane, diesel, toluene and chloroform. The findings show that the acrylate-HIPEs displayed high reactivity photopolymerizing in 20 min. The glass transition temperature of the materials were in the range of 2 to 83 °C, depending on the ratio of acrylates in the photocurable formulation, displaying the characteristic morphology with voids and interconnecting windows. The polyHIPEs exhibited superior properties of absorption of the studied hydrocarbons. The order of capability of absorption was chloroform > toluene > hexane > diesel. The optimum absorbing material was that with trimethylolpropane triacrylate, ethylhexyl acrylate and isobornyl acrylate in a 1:0.9:2.1 ratio, which absorbed 778% of chloroform, 378% of toluene, 306 % of hexane and 236% of diesel.
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Chen Q, Tai X, Li J, Li C, Guo L. High Internal Phase Emulsions Synergistically Stabilized by Sodium Carboxymethyl Cellulose and Palm Kernel Oil Ethoxylates as an Essential Oil Delivery System. J Agric Food Chem 2021; 69:4191-4203. [PMID: 33787238 DOI: 10.1021/acs.jafc.0c07606] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
High internal phase emulsions (HIPEs) with an internal phase fraction of 84 vol % were prepared using carboxymethyl cellulose (CMC) and palm kernel oil ethoxylates (SOE-N-60) as a dual emulsifier. Effects of the oil-phase volume fraction, CMC concentration, and SOE-N-60 concentration on oil-in-water HIPEs stability were systematically studied by a Mastersizer 2000 instrument, Lx POL polarizing microscope, rheometer, etc. The bioavailability of tea tree oil can be effectively protected using HIPEs as a delivery system. The experimental results showed that, with the increase of the concentrations of CMC and SOE-N-60, the droplet size of HIPEs gradually decreases and the HIPEs showed good static stability. In addition, it was observed by scanning electron microscopy that the polyHIPEs materials using HIPEs stabilized by different SOE-N-60 and CMC concentrations as templates had different structures. Moreover, the synergism between CMC and SOE-N-60 surfactants plays a significant role in the preparation and stability of HIPEs.
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Affiliation(s)
- Qian Chen
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Xiumei Tai
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Jiyun Li
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Chunhui Li
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Lingxiao Guo
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
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Tripodo G, Calleri E, Franco CD, Torre ML, Memo M, Mandracchia D. Inverse Poly- High Internal Phase Emulsions Poly(HIPEs) Materials from Natural and Biocompatible Polysaccharides. Materials (Basel) 2020; 13:E5499. [PMID: 33276681 DOI: 10.3390/ma13235499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/26/2020] [Accepted: 11/28/2020] [Indexed: 11/28/2022]
Abstract
This paper shows one of the few examples in the literature on the feasibility of novel materials from natural and biocompatible polymers like inulin (INU) or glycol chitosan (GCS) templated by the formation of o/w (inverse) high internal phase emulsion (HIPE). To the best of our knowledge, this is the first example of inverse polyHIPEs obtained from glycol chitosan or inulin. The obtained polyHIPEs were specifically designed for possible wound dressing applications. The HIPE (pre-crosslinking emulsion) was obtained as inverse HIPE, i.e., by forming a cream-like 80:20 v/v o/w emulsion by using the isopropyl myristate in its oil phase, which is obtained from natural sources like palm oil or coconut oil. The surfactant amount was critical in obtaining the inverse HIPE and the pluronic F127 was effective in stabilizing the emulsion comprising up to 80% v/v as internal phase. The obtained inverse HIPEs were crosslinked by UV irradiation for methacrylated INU or by glutaraldehyde-crosslinking for GCS. In both cases, inverse poly-HIPEs were obtained, which were physicochemically characterized. This paper introduces a new concept in using hydrophilic, natural polymers for the formation of inverse poly-HIPEs.
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Kim D, Kim H, Chang JY. Designing Internal Hierarchical Porous Networks in Polymer Monoliths that Exhibit Rapid Removal and Photocatalytic Degradation of Aromatic Pollutants. Small 2020; 16:e1907555. [PMID: 32348034 DOI: 10.1002/smll.201907555] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 03/27/2020] [Accepted: 03/27/2020] [Indexed: 05/14/2023]
Abstract
This paper describes the preparation of 3D polymer monoliths containing internal hierarchical porosity. The porous networks are fabricated based on Pickering high-internal-phase emulsions (HIPEs) stabilized by microporous β-cyclodextrin-based polymer particles (CDPs) as the emulsifier; CDPs are facilely synthesized by the polyaddition reactions without the need for catalysts. The designed Pickering agents enable to form a bicontinuous internal phase in 8:2 cyclohexane-water v/v, and the oil droplets in the continuous water phase is found to be fairly stable up to 1 month. Furthermore, the addition of acrylamide and N,N'-methylenebis(acrylamide) results in polymer networks after in situ thermal polymerization at 60 °C in the water phase, and the monoliths include both interconnected macropores from the HIPE template and micro- and mesopores from the CDPs embedded at the interface. The porous monoliths rapidly absorb a variety of solvents taking advantage of multiscale porosity and amphiphilicity. Furthermore, the materials can be efficiently used for the removal of aromatic pollutants and then reused after washing and drying without the deterioration of performance. Also, they exhibit high photocatalytic capability and good recyclability as being used as a catalytic support when embedded with titanium dioxide (TiO2 ).
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Affiliation(s)
- Doyeon Kim
- Department of Materials Science and Engineering, College of Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Hyungwoo Kim
- School of Polymer Science and Engineering & Alan G. MacDiarmid Energy Research Institute, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, Korea
| | - Ji Young Chang
- Department of Materials Science and Engineering, College of Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
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13
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Zhu Y, Huan S, Bai L, Ketola A, Shi X, Zhang X, Ketoja JA, Rojas OJ. High Internal Phase Oil-in-Water Pickering Emulsions Stabilized by Chitin Nanofibrils: 3D Structuring and Solid Foam . ACS Appl Mater Interfaces 2020; 12:11240-11251. [PMID: 32040294 PMCID: PMC7735654 DOI: 10.1021/acsami.9b23430] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Chitin nanofibrils (NCh, ∼10 nm lateral size) were produced under conditions that were less severe compared to those for other biomass-derived nanomaterials and used to formulate high internal phase Pickering emulsions (HIPPEs). Pre-emulsification followed by continuous oil feeding facilitated a "scaffold" with high elasticity, which arrested droplet mobility and coarsening, achieving edible oil-in-water emulsions with internal phase volume fraction as high as 88%. The high stabilization ability of rodlike NCh originated from the restricted coarsening, droplet breakage and coalescence upon emulsion formation. This was the result of (a) irreversible adsorption at the interface (wettability measurements by the captive bubble method) and (b) structuring in highly interconnected fibrillar networks in the continuous phase (rheology, cryo-SEM, and fluorescent microscopies). Because the surface energy of NCh can be tailored by pH (protonation of surface amino groups), emulsion formation was found to be pH-dependent. Emulsions produced at pH from 3 to 5 were most stable (at least for 3 weeks). Although at a higher pH NCh was dispersible and the three-phase contact angle indicated better interfacial wettability to the oil phase, the lower interdroplet repulsion caused coarsening at high oil loading. We further show the existence of a trade-off between NCh axial aspect and minimum NCh concentration to stabilize 88% oil-in-water HIPPEs: only 0.038 wt % (based on emulsion mass) NCh of high axial aspect was required compared to 0.064 wt % for the shorter one. The as-produced HIPPEs were easily textured by taking advantage of their elastic behavior and resilience to compositional changes. Hence, chitin-based HIPPEs were demonstrated as emulgel inks suitable for 3D printing (millimeter definition) via direct ink writing, e.g., for edible functional foods and ultralight solid foams displaying highly interconnected pores and for potential cell culturing applications.
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Affiliation(s)
- Ya Zhu
- Bio-Based Colloids
and Materials, Department of Bioproducts and Biosystems, Aalto University, Aalto FIN-00076, Espoo, Finland
| | - Siqi Huan
- Bio-Based Colloids
and Materials, Department of Bioproducts and Biosystems, Aalto University, Aalto FIN-00076, Espoo, Finland
- Departments
of Chemical & Biological Engineering, Chemistry, and Wood Science,
2360 East Mall, The University of British
Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Long Bai
- Bio-Based Colloids
and Materials, Department of Bioproducts and Biosystems, Aalto University, Aalto FIN-00076, Espoo, Finland
- Departments
of Chemical & Biological Engineering, Chemistry, and Wood Science,
2360 East Mall, The University of British
Columbia, Vancouver, British Columbia V6T 1Z3, Canada
- . Tel: +1-236-869-0416
| | - Annika Ketola
- VTT Technical Research
Centre of Finland Ltd, Jyväskylä FI-40101, Finland
| | - Xuetong Shi
- Bio-Based Colloids
and Materials, Department of Bioproducts and Biosystems, Aalto University, Aalto FIN-00076, Espoo, Finland
| | - Xiao Zhang
- Bio-Based Colloids
and Materials, Department of Bioproducts and Biosystems, Aalto University, Aalto FIN-00076, Espoo, Finland
| | - Jukka A. Ketoja
- VTT Technical Research
Centre of Finland Ltd, Jyväskylä FI-40101, Finland
| | - Orlando J. Rojas
- Bio-Based Colloids
and Materials, Department of Bioproducts and Biosystems, Aalto University, Aalto FIN-00076, Espoo, Finland
- Departments
of Chemical & Biological Engineering, Chemistry, and Wood Science,
2360 East Mall, The University of British
Columbia, Vancouver, British Columbia V6T 1Z3, Canada
- . Tel: +1-604-822-3457
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14
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Yan C, McClements DJ, Zhu Y, Zou L, Zhou W, Liu W. Fabrication of OSA Starch/Chitosan Polysaccharide-Based High Internal Phase Emulsion via Altering Interfacial Behaviors. J Agric Food Chem 2019; 67:10937-10946. [PMID: 31508960 DOI: 10.1021/acs.jafc.9b04009] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This paper attempted to construct a high internal phase emulsion (HIPE) through altering interfacial behaviors using the electrostatic interaction between positive chitosan and negative octenyl succinic anhydride (OSA) starch. The partial polysaccharide complex of OSA starch/chitosan was used to stabilize HIPE, which was able to adsorb at the oil droplet interface and prevent the coalescence of oil droplets. The wettability of OSA starch was enhanced with the addition of positively charged chitosan, leading to the formation of partial complexes. The impact of pH and concentration of chitosan on the droplet size, surface charge, and interface behavior were investigated, and the formation of the polysaccharide complex was further confirmed by atomic force microscopy. The presence of the OSA starch/chitosan complex facilitated the formation of stable HIPE with a gel-like structure and satisfactory centrifugal and oxidative stability. These results are useful to provide information for fabricating polysaccharide-based HIPE delivery systems, which may help expand their application in the food industry.
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Affiliation(s)
- Chi Yan
- State Key Laboratory of Food Science and Technology , Nanchang University , No. 235 Nanjing East Road , Nanchang 330047 , Jiangxi , China
| | - David Julian McClements
- Biopolymers & Colloids Research Laboratory, Department of Food Science , University of Massachusetts , Amherst , Massachusetts 01003 , United States
| | - Yuqing Zhu
- State Key Laboratory of Food Science and Technology , Nanchang University , No. 235 Nanjing East Road , Nanchang 330047 , Jiangxi , China
| | - Liqiang Zou
- State Key Laboratory of Food Science and Technology , Nanchang University , No. 235 Nanjing East Road , Nanchang 330047 , Jiangxi , China
| | - Wei Zhou
- State Key Laboratory of Food Science and Technology , Nanchang University , No. 235 Nanjing East Road , Nanchang 330047 , Jiangxi , China
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute , Chinese Academy of Tropical Agricultural Sciences , Zhanjiang , Guangdong 524001 , China
| | - Wei Liu
- State Key Laboratory of Food Science and Technology , Nanchang University , No. 235 Nanjing East Road , Nanchang 330047 , Jiangxi , China
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15
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Lee MC, Tan C, Ravanfar R, Abbaspourrad A. Ultrastable Water-in-Oil High Internal Phase Emulsions Featuring Interfacial and Biphasic Network Stabilization. ACS Appl Mater Interfaces 2019; 11:26433-26441. [PMID: 31245993 DOI: 10.1021/acsami.9b05089] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, we present gel-in-gel water-in-oil (W/O) high internal phase emulsions (HIPEs) that feature high stability by structuring both phases of the emulsion. Compared to significant advances made in oil-in-water (O/W) HIPEs, W/O HIPEs are extremely unstable and difficult to generate without introducing high concentrations of surfactants. Another main challenge is the low viscosity of both water and oil phases which promotes the instability of W/O HIPEs. Here, we demonstrate ultrastable W/O HIPEs that feature biphasic structuring, in which hydrogels are dispersed in oleogels, and self-forming, low-concentration interfacial Pickering crystals provide added stability. These W/O HIPEs exhibit high tolerance toward pH shock and destabilizing environments. In addition, this novel ultrastable gel-in-gel W/O HIPE is sustainable and made solely with natural ingredients without the addition of any synthetic stabilizers. By applying phase structuring within the HIPEs through the addition of various carrageenans and beeswax as structurants, we can increase the emulsion's stability and viscoelastic rheological properties. The performance of these gel-in-gel W/O HIPEs holds promise for a wide range of applications. As a proof of concept, we demonstrated herein the application as a gelled delivery system that enables the co-delivery of hydrophilic and hydrophobic materials at maximized loads, demonstrating high resistance to gastrointestinal pHs and a controlled-release profile.
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Affiliation(s)
- Michelle C Lee
- Department of Food Science , Cornell University , Stocking Hall , Ithaca , New York 14853 , United States
| | - Chen Tan
- Department of Food Science , Cornell University , Stocking Hall , Ithaca , New York 14853 , United States
| | - Raheleh Ravanfar
- Department of Food Science , Cornell University , Stocking Hall , Ithaca , New York 14853 , United States
| | - Alireza Abbaspourrad
- Department of Food Science , Cornell University , Stocking Hall , Ithaca , New York 14853 , United States
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16
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Abstract
The surface and interfacial properties of casein-hydrolyzed peptides were evaluated using measurement of surface and interfacial tensions, surface viscosity, dynamic light scattering (DLS), and freeze-fracture transmission electron microscopy (FF-TEM). In this study, high internal oil phase emulsion (HIPE) gels were successfully prepared, using the surface and interfacial properties of casein peptides. The casein peptides exhibited surface and interfacial activities. The estimated critical micelle concentration (CMC) and γCMC values were 3.0 mg/mL and 47.8 mN/m, and the average size of casein peptide micelles was 13.2 ± 1.7 nm. The surface shear viscosity of an aqueous casein peptide solution at 10 mg/mL was 1603 µPa ms, which is fifteen times larger than that of sodium dodecyl sulfate (SDS, 106 µPa ms). The larger surface viscosity of casein peptide adsorbed layer could stabilize emulsions and prevent flocculation and coalescence. High internal oil phase gel emulsions were then prepared by slowly adding oil and polyisobutene into an aqueous casein peptide solution/glycerol mixture with different compositions. Based on the pseudo ternary 15 wt% aqueous casein peptide solution/polyisobutene/glycerol phase diagram, the HIPE containing the maximum 88.1 wt% (91.5 vol%) of oil is obtained by the addition of 0.36 wt% of casein peptides. The use of only a small amount of protein-hydrolyzed peptides instead of the commonly used synthetic surfactants for HIPE preparation has great advantages for the widespread application of HIPE technology.
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Affiliation(s)
- Kazuaki Wakita
- Oleo & Speciality Chemicals Research LAB., NOF Corporation
| | - Tomohiro Imura
- Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST)
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17
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Su J, Wang X, Li W, Chen L, Zeng X, Huang Q, Hu B. Enhancing the Viability of Lactobacillus plantarum as Probiotics through Encapsulation with High Internal Phase Emulsions Stabilized with Whey Protein Isolate Microgels. J Agric Food Chem 2018; 66:12335-12343. [PMID: 30380846 DOI: 10.1021/acs.jafc.8b03807] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Probiotics with positive physiological effects on intestinal microflora populations of the host are popular in functional foods. Low relative humidity (RH) and temperature are beneficial for probiotic survival. In the present study, freeze-dried Lactobacillus plantarum powder, representative of probiotics, was encapsulated in the high internal phase emulsions (HIPEs) stabilized with whey protein isolate (WPI) microgels, to avoid the contact of water. Homogeneously dispersed WPI microgels with particle sizes around 300 nm were formed through thermal treatment of WPI solution. The particle size of the microgels decreased with the elevation of protein concentrations as well as the departure of pH values from the isoelectric point of the protein. When internal oil phase volume fractions were higher than 80% (w/w), WPI microgels with concentrations higher than 4.0 wt %, prepared at pH 4.0, 6.0, and 7.0 conditions, could stabilize the oil to form homogeneous HIPEs with tilting stability. The HIPEs thus formed had a cellular and tunable pore structure that could resist mechanical perturbation. Encapsulation of L. plantarum within HIPEs successfully increased the cell viability after pasteurization processing. The protective effect was even improved with the elevation of the oil volume fraction and increase of WPI microgel concentrations. Under different pH conditions, the strongest protective effect appeared at pH 4.0, when the WPI microgels accumulated on the oil droplet surface. When the large amount of oil and the protein microgel layer on the oil-water interface were combined as two specialties, the HIPEs were demonstrated to have high potential for enhancing the viability of probiotics during food thermal processing.
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Affiliation(s)
- Jiuling Su
- College of Food Science and Technology , Nanjing Agricultural University , 1 Weigang , Nanjing , Jiangsu 210095 , People's Republic of China
| | - Xiaoqi Wang
- Department of Food Science , Rutgers, The State University of New Jersey , 65 Dudley Road , New Brunswick , New Jersey 08901 , United States
| | - Wei Li
- College of Food Science and Technology , Nanjing Agricultural University , 1 Weigang , Nanjing , Jiangsu 210095 , People's Republic of China
| | - Ligen Chen
- Department of Bioengineering, School of Marine and Bioengineering , Yancheng Institute of Technology , Yancheng , Jiangsu 224051 , People's Republic of China
| | - Xiaoxiong Zeng
- College of Food Science and Technology , Nanjing Agricultural University , 1 Weigang , Nanjing , Jiangsu 210095 , People's Republic of China
| | - Qingrong Huang
- Department of Food Science , Rutgers, The State University of New Jersey , 65 Dudley Road , New Brunswick , New Jersey 08901 , United States
| | - Bing Hu
- College of Food Science and Technology , Nanjing Agricultural University , 1 Weigang , Nanjing , Jiangsu 210095 , People's Republic of China
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18
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Carranza A, Pérez-García MG, Song K, Jeha GM, Diao Z, Jin R, Bogdanchikova N, Soltero AF, Terrones M, Wu Q, Pojman JA, Mota-Morales JD. Deep-Eutectic Solvents as MWCNT Delivery Vehicles in the Synthesis of Functional Poly(HIPE) Nanocomposites for Applications as Selective Sorbents. ACS Appl Mater Interfaces 2016; 8:31295-31303. [PMID: 27779385 DOI: 10.1021/acsami.6b09589] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report an alternative green strategy based on deep-eutectic solvents (DES) to deliver multiwalled carbon nanotubes (MWCNTs) for a bottom-up approach that allows for the selective interfacial functionalization of nonaqueous poly(high internal phase emulsions), poly(HIPEs). The formation and polymerization of methacrylic and styrenic HIPEs were possible through stabilization with nitrogen doped carbon nanotube (CNX) and surfactant mixtures using a urea-choline chloride DES as a delivering phase. Subtle changes in CNX concentration (less than 0.2 wt % to the internal phase) produced important changes in the macroporous monolith functionalization, which in turn led to increased monolith hydrophobicity and pore openness. These materials displayed great oleophilicity with water contact angles as high as 140° making them apt for biodiesel, diesel, and gasoline fuel sorption applications. Overall, styrene divinylbenzene (StDvB) based poly(HIPEs) showed hydrophobicity and fuel sorption capacities as high as 4.8 (g/g). Pore hierarchy, namely pore openness, regulated sorption capacity, and sorption times where greater openness resulted in faster sorption and increased sorption capacity. Monoliths were subject to 20 sorption-desorption cycles demonstrating recyclability and stable sorption capacity. Finally, CNX/surfactant hybrids made it possible to reduce surfactant requirements for successful HIPE formation and stabilization during polymerization. All poly(HIPEs) retained acceptable conversion as a function of CNX loading nearing 90% or better with thermal stability as high as 283 °C.
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Affiliation(s)
- Arturo Carranza
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70820, United States
| | - María G Pérez-García
- Centro Universitario de Tonalá, Universidad de Guadalajara , Tonalá, Jalisco 45425, México
| | - Kunlin Song
- School of Renewable Natural Resources, Louisiana State University Agricultural Center , Baton Rouge, Louisiana 70803, United States
| | - George M Jeha
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70820, United States
| | - Zhenyu Diao
- Department of Physics & Astronomy, Louisiana State University , Baton Rouge, Louisiana 70820, United States
| | - Rongying Jin
- Department of Physics & Astronomy, Louisiana State University , Baton Rouge, Louisiana 70820, United States
| | - Nina Bogdanchikova
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México , Ensenada, Baja California 22860, México
| | - Armando F Soltero
- Departamento de Ingeniería Química, Universidad de Guadalajara , Guadalajara, Jalisco 44430, México
| | - Mauricio Terrones
- Department of Physics and Center for 2-Dimensional and Layered Materials, Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Qinglin Wu
- School of Renewable Natural Resources, Louisiana State University Agricultural Center , Baton Rouge, Louisiana 70803, United States
| | - John A Pojman
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70820, United States
| | - Josué D Mota-Morales
- CONACYT-Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México , Ensenada, Baja California 22860, México
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19
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Abstract
Hierarchical porous polystyrene monoliths (HCP-PolyHIPE) are obtained by hypercrosslinking poly(styrene-divinylbenzene) monoliths prepared by polymerization of high internal phase emulsions (PolyHIPEs). The hypercrosslinking is achieved using an approach known as knitting which employs formaldehyde dimethyl acetal (FDA) as an external crosslinker. Scanning electron microscopy (SEM) confirms that the macroporous structure in the original monolith is retained during the knitting process. By increasing the amount of divinylbenzene (DVB) in PolyHIPE, the BET surface area and pore volume of the HCP-PolyHIPE decrease, while the micropore size increases. BET surface areas of 196-595 m(2) g(-1) are obtained. The presence of micropores, mesopores, and macropores is confirmed from the pore size distribution. With a hierarchical porous structure, the monoliths reveal comparable gas sorption properties and potential applications in oil spill clean-up.
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Affiliation(s)
- Xinjia Yang
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Liangxiao Tan
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Lingling Xia
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Colin D Wood
- CSIRO Manufacturing Flagship, Clayton, VIC, 3168, Australia
| | - Bien Tan
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
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20
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Abstract
The design of novel biomaterials for regenerative medicine requires incorporation of well-defined physical and chemical properties that mimic the native extracellular matrix (ECM). Here, we report the synthesis and characterization of porous foams prepared by high internal phase emulsion (HIPE) templating using amphiphilic copolymers that act as surfactants during the HIPE process. We combine different copolymers exploiting oil-water interface confined phase separation to engineer the surface topology of foam pores with nanoscopic domains of cell inert and active chemistries mimicking native matrix. We further demonstrate how proteins and hMSCs adhere in a domain specific manner.
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Affiliation(s)
- Priyalakshmi Viswanathan
- The Krebs Institute, The University of Sheffield, Sheffield UK
- Department of Biomedical Science, The University of Sheffield, Sheffield UK
| | - Somyot Chirasatitsin
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA
| | | | - Adam J. Engler
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA
- Material Science Program, University of California, San Diego, La Jolla, CA, USA
- Sanford Consortium for Regenerative Medicine, La Jolla, CA, USA
| | - Giuseppe Battaglia
- The Krebs Institute, The University of Sheffield, Sheffield UK
- Department of Biomedical Science, The University of Sheffield, Sheffield UK
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