1
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Cheng S, Wang J, Li C, He S, Liu Y, Wang Y, Dong J, Li X. Morphology and Emulsification of Poly( N-2-(methacryloyloxy) ethyl pyrrolidone)- b-poly(benzyl methacrylate) Assemblies by Polymerization-Induced Self-Assembly. ACS OMEGA 2024; 9:36917-36925. [PMID: 39246494 PMCID: PMC11375704 DOI: 10.1021/acsomega.3c09315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 06/07/2024] [Accepted: 07/30/2024] [Indexed: 09/10/2024]
Abstract
In this work, a series of amphiphilic diblock copolymers poly(N-2-(methacryloyloxy) ethyl pyrrolidone)-b-poly(benzyl methacrylate) (PNMP m -b-PBzMA n ) were developed by the dispersion polymerization method in ethanol. The polymerization-induced self-assembly (PISA) behaviors were studied systematically, and a comprehensive structure-property relationship was also established. Two distinct PISA tendencies were observed, which was mainly depended on the polymerization degree m of PNMP segment. When m is small such as 39 and 55, morphological transitions from spherical to vesicle-like assemblies via wormlike ones upon increasing n commonly happen regardless of the solid content. Alternatively, spherical assemblies became the sole morphology for PNMP64-b-PBzMA n block copolymers because of the excellent solvophilicity of the PNMP64 segment. Attributing to the amphiphilicity of PNMP m -b-PBzMA n block copolymers, PNMP m -b-PBzMA n assemblies by PISA are a type of excellent Pickering emulsifiers. These assemblies prefer to stabilize O/W Pickering emulsions as confirmed by the confocal laser scanning microscopy method, and the effects of polymerization degree of PBzMA segment or morphologies of PNMP m -b-PBzMA n assemblies are finite.
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Affiliation(s)
- Shuozhen Cheng
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
- Chemistry Metrology Division, Hubei Institute of Measurement and Testing Technology, Wuhan 430200, P. R. China
| | - Jun Wang
- Oil & Gas Technology Research Institute, Changqing Oilfield Company, Xi'an 710018, China
- National Engineering Laboratory for Exploration and Development of Low-Permeable Oil and Gas Fields, PetroChina Changqing Oilfield Company, Xi'an 710018, China
| | - Chunhui Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Sixian He
- Oil & Gas Technology Research Institute, Changqing Oilfield Company, Xi'an 710018, China
- National Engineering Laboratory for Exploration and Development of Low-Permeable Oil and Gas Fields, PetroChina Changqing Oilfield Company, Xi'an 710018, China
| | - Yashuang Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yan Wang
- Oil & Gas Technology Research Institute, Changqing Oilfield Company, Xi'an 710018, China
- National Engineering Laboratory for Exploration and Development of Low-Permeable Oil and Gas Fields, PetroChina Changqing Oilfield Company, Xi'an 710018, China
| | - Jinfeng Dong
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Xuefeng Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
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2
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Chen A, Zhou S, Kong Y, Han W, Li X, Cai X. Enhanced emulsification of cellulose nanocrystals by ε-polylysine to stabilize Pickering emulsions. Int J Biol Macromol 2024; 260:128940. [PMID: 38143050 DOI: 10.1016/j.ijbiomac.2023.128940] [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: 05/28/2023] [Revised: 12/03/2023] [Accepted: 12/19/2023] [Indexed: 12/26/2023]
Abstract
This study provides a novel strategy for preparing bio-based antibacterial emulsions stabilized by cellulose nanocrystals (CNCs). Antibacterial ε-polylysine (ε-PL) with a positive charge was introduced into the aqueous phase to modulate the interfacial behavior of CNCs via electrostatic interactions. Pickering emulsions containing ε-PL/CNCs (ε-PL 0.07-0.1 g/L) had significantly better stability, larger emulsion ratio, smaller emulsion droplet diameter, and superior antibacterial ability than emulsions stabilized by CNCs alone. This could be attributed to the formation of a CNC-dense layer at the interface in the continuous phase caused by a reduction of electrostatic repulsion after adding ε-PL. This was confirmed by zeta potential measurements, rheological properties, and bio-freezing scanning electron microscopy. In addition, cinnamaldehyde was introduced into the oil phase to further improve the antibacterial properties of the emulsion, thereby avoiding easy evaporation into water. Our findings provide an innovative solution for preparing bio-based antibacterial emulsions stabilized by ε-PL/CNCs, which will benefit the development of food, medicine, and cosmetic lotions.
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Affiliation(s)
- Anxiang Chen
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Shijin Zhou
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Yue Kong
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Wenjia Han
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Xia Li
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
| | - Xinhai Cai
- Yantai University, College of Environmental and Materials Engineering, Yantai 264005, China.
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3
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Yu Q, Liu S, Guo R, Chen K, Li Y, Jiang D, Gong S, Yin L, Liu K. Complete Restoration of Hearing Loss and Cochlear Synaptopathy via Minimally Invasive, Single-Dose, and Controllable Middle Ear Delivery of Brain-Derived Neurotrophic Factor-Poly(dl-lactic acid- co-glycolic acid)-Loaded Hydrogel. ACS NANO 2024; 18:6298-6313. [PMID: 38345574 DOI: 10.1021/acsnano.3c11049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Noise-induced hearing loss (NIHL) often accompanies cochlear synaptopathy, which can be potentially reversed to restore hearing. However, there has been little success in achieving complete recovery of sensorineural deafness using nearly noninvasive middle ear drug delivery before. Here, we present a study demonstrating the efficacy of a middle ear delivery system employing brain-derived neurotrophic factor (BDNF)-poly-(dl-lactic acid-co-glycolic acid) (PLGA)-loaded hydrogel in reversing synaptopathy and restoring hearing function in a mouse model with NIHL. The mouse model achieved using the single noise exposure (NE, 115 dBL, 4 h) exhibited an average 20 dBL elevation of hearing thresholds with intact cochlear hair cells but a loss of ribbon synapses as the primary cause of hearing impairment. We developed a BDNF-PLGA-loaded thermosensitive hydrogel, which was administered via a single controllable injection into the tympanic cavity of noise-exposed mice, allowing its presence in the middle ear for a duration of 2 weeks. This intervention resulted in complete restoration of NIHL at frequencies of click, 4, 8, 16, and 32 kHz. Moreover, the cochlear ribbon synapses exhibited significant recovery, whereas other cochlear components (hair cells and auditory nerves) remained unchanged. Additionally, the cochlea of NE treated mice revealed activation of tropomyosin receptor kinase B (TRKB) signaling upon exposure to BDNF. These findings demonstrate a controllable and minimally invasive therapeutic approach that utilizes a BDNF-PLGA-loaded hydrogel to restore NIHL by specifically repairing cochlear synaptopathy. This tailored middle ear delivery system holds great promise for achieving ideal clinical outcomes in the treatment of NIHL and cochlear synaptopathy.
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Affiliation(s)
- Qianru Yu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Shengnan Liu
- School of Materials Science and Engineering,Tsinghua University, Beijing 100084, China
| | - Rui Guo
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Kuntao Chen
- School of Materials Science and Engineering,Tsinghua University, Beijing 100084, China
| | - Yang Li
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Dan Jiang
- Hearing Implant Centre, Guy's and St. Thomas NHS Foundation Trust, London SE1 7EH, United Kingdom
- Centre for Craniofacial and Regenerative Biology, King's College London, London SE1 9RT, United Kingdom
| | - Shusheng Gong
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
- Clinical Center for Hearing Loss, Capital Medical University, Beijing 100050, China
| | - Lan Yin
- School of Materials Science and Engineering,Tsinghua University, Beijing 100084, China
| | - Ke Liu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
- Clinical Center for Hearing Loss, Capital Medical University, Beijing 100050, China
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4
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Nguyen HM, Mader AV, De S, Basarir F, Vapaavuori J. Controlling the Self‐Assembly of Hierarchical PS‐
b
‐P4VP Structures Prepared by Dip‐Coating and Emulsion Breath Figure Techniques. ChemistrySelect 2023. [DOI: 10.1002/slct.202300797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Affiliation(s)
- Hoang M. Nguyen
- Department of Chemistry and Materials Science Aalto University Espoo 02150 Finland
| | | | - Swarnalok De
- Department of Chemistry and Materials Science Aalto University Espoo 02150 Finland
| | - Fevzihan Basarir
- Department of Chemistry and Materials Science Aalto University Espoo 02150 Finland
| | - Jaana Vapaavuori
- Department of Chemistry and Materials Science Aalto University Espoo 02150 Finland
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5
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He F, Zhao X, Yang S, Wen Q, Feng Y, Yu G, Li J. Coexistence of aggregates and flat states of hydrophobically modified sodium alginate at an oil/water interface: A molecular dynamics study. Int J Biol Macromol 2023; 231:123233. [PMID: 36642363 DOI: 10.1016/j.ijbiomac.2023.123233] [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: 08/01/2022] [Revised: 12/16/2022] [Accepted: 01/08/2023] [Indexed: 01/14/2023]
Abstract
Hydrophobically modified sodium alginate stabilizes benzene in water emulsions. The stability of the emulsion is related to the interface properties at the mesoscopic scale, but the details of the polymer adsorption, conformation and organization at oil/water interfaces at the microscopic scale remain largely elusive. In this study, hydrophobically modified sodium alginate was used as a representative of amphiphilic polymers for prediction of distribution of HMSA at the oil/water interface by coarse-grained molecular dynamics simulation. The result showed that driven by the interaction energy between the hydrophobic segment and benzene, HMSA will actively accumulate at the oil/water interface. The HMSA molecules parallel to the oil/water interface prevent the hydrophobic segments in the micelles from approaching the oil/water interface, so that the micelles can exist stably by steric hindrance. This study would be helpful to understand the aggregation behavior of amphiphilic polymers at the oil/water interface, these results can have applications in diverse sectors such as drug, food industry, where polymers are used to stabilize emulsions.
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Affiliation(s)
- Furui He
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education and School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, China
| | - Xinyu Zhao
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education and School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, China
| | - Shujuan Yang
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education and School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, China
| | - Qiyan Wen
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education and School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, China
| | - Yuhong Feng
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education and School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, China
| | - Gaobo Yu
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education and School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, China.
| | - Jiacheng Li
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education and School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, China.
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6
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Xue Y, Dong J, Li X. Fabricating switchable Pickering emulsions by dynamic covalent copolymer amphiphiles. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2022.130399] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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Interfacial Characterization of an Oxidative Pickering Emulsion Stabilized by Polysaccharides/Polyphenol Complex Nanogels via a Multiscale Study. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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8
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He X, Xue Y, Dong J, Li X. Multiple Pickering emulsions fabricated by a single block copolymer amphiphile in one-step. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Jing X, Chen B, Liu T, Cai Y, Zhao Q, Deng X, Zhao M. Formation and stability of Pickering emulsion gels by insoluble soy peptide aggregates through hydrophobic modification. Food Chem 2022; 387:132897. [PMID: 35413552 DOI: 10.1016/j.foodchem.2022.132897] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 03/02/2022] [Accepted: 04/03/2022] [Indexed: 01/11/2023]
Abstract
In this work, a highly stable food-grade Pickering emulsion gels was successfully prepared by hydrophobically modified insoluble soybean peptide aggregates. The relationships between the surface properties of insoluble soybean peptide aggregates and Pickering emulsion gels characteristics were clarified. After modification, the insoluble soybean peptide aggregates with high surface hydrophobicity had small particle size (377 nm), near-neutral wettability (θo/w = 92°) and strong interfacial adsorption capability. These allowed the modified insoluble soybean peptide aggregates to stabilize the oil-water interface and form continuous network surrounding oil droplets, leading to the formation of stable Pickering emulsion gels. Besides, Pickering emulsion gels prepared by insoluble soybean peptide aggregates with higher surface hydrophobicity had smaller droplet size and higher gel strength, and remained stable even after 60 days of storage. The findings suggest a preferable plant protein particle for the preparation of stable Pickering emulsion gels in food industry.
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Affiliation(s)
- Xuelian Jing
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China
| | - Bifen Chen
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China
| | - Tongxun Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China
| | - Yongjian Cai
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China
| | - Qiangzhong Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China.
| | - Xinlun Deng
- Guangdong Wenbang Biotechnology Co Ltd, Zhaoqing 526000, People's Republic of China
| | - Mouming Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China
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10
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Huang Z, Ni Y, Yu Q, Li J, Fan L, Eskin NAM. Deep learning in food science: An insight in evaluating Pickering emulsion properties by droplets classification and quantification via object detection algorithm. Adv Colloid Interface Sci 2022; 304:102663. [PMID: 35430426 DOI: 10.1016/j.cis.2022.102663] [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: 01/12/2022] [Revised: 04/03/2022] [Accepted: 04/03/2022] [Indexed: 11/18/2022]
Abstract
Understanding the complicated emulsion microstructures by microscopic images will help to further elaborate their mechanisms and relevance. The formidable goal of the classification and quantification of emulsion microstructure appears difficult to achieve. However, object detection algorithm in deep learning makes it feasible. This paper reports a new technique for evaluating Pickering emulsion properties through classification and quantification of the emulsion microstructure by object detection algorithm. The trained neural network models characterize the emulsion droplets by distinguishing between different individual emulsion droplets and morphological mechanisms from numerous microscopic images. The quantified results of the emulsion droplets presented in this study, provide details of statistical changes at different concentrations of the Pickering interface and storage temperatures enabling elucidation of the mechanisms involved. This methodology provides a new quantitative and statistical analysis of emulsion microstructure and properties.
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Affiliation(s)
- Zongyu Huang
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China
| | - Yang Ni
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China
| | - Qun Yu
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China
| | - Jinwei Li
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China
| | - Liuping Fan
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China.
| | - N A Michael Eskin
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N, Canada
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11
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Nath D, Santhosh R, Ahmed J, Sarkar P. Optical, mechanical, structural, and antimicrobial properties of tamarind kernel powder, halloysite, and cinnamaldehyde nanocomposite films. J FOOD PROCESS ENG 2022. [DOI: 10.1111/jfpe.14065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Debarshi Nath
- Department of Food Process Engineering National Institute of Technology Rourkela Odisha India
| | - Ravichandran Santhosh
- Department of Food Process Engineering National Institute of Technology Rourkela Odisha India
| | - Jasim Ahmed
- Environment and Life Sciences Research Center Kuwait Institute for Scientific Research Safat Kuwait
| | - Preetam Sarkar
- Department of Food Process Engineering National Institute of Technology Rourkela Odisha India
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12
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Wu Z, Li H, Zhao X, Ye F, Zhao G. Hydrophobically modified polysaccharides and their self-assembled systems: A review on structures and food applications. Carbohydr Polym 2022; 284:119182. [DOI: 10.1016/j.carbpol.2022.119182] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 12/27/2021] [Accepted: 01/21/2022] [Indexed: 01/05/2023]
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13
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Chen C, Sun L, Liu X. Effect of degree of hydrolysis of polyacrylamide on the micromorphology of its solution. J Appl Polym Sci 2022. [DOI: 10.1002/app.51522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Cancan Chen
- University of Chinese Academy of Sciences Beijing China
- Institute of Porous Flow & Fluid Mechanics Chinese Academy of Sciences Langfang China
- Center for Enhanced Oil Recovery Research PetroChina Research Institute of Petroleum Exploration & Development Beijing China
| | - Linghui Sun
- Institute of Porous Flow & Fluid Mechanics Chinese Academy of Sciences Langfang China
- Center for Enhanced Oil Recovery Research PetroChina Research Institute of Petroleum Exploration & Development Beijing China
| | - Xiangui Liu
- Institute of Porous Flow & Fluid Mechanics Chinese Academy of Sciences Langfang China
- Center for Enhanced Oil Recovery Research PetroChina Research Institute of Petroleum Exploration & Development Beijing China
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14
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Zhao X, He F, Yu G, Feng Y, Li J. High-viscosity Pickering emulsion stabilized by amphiphilic alginate/SiO 2 via multiscale methodology for crude oil-spill remediation. Carbohydr Polym 2021; 273:118492. [PMID: 34560936 DOI: 10.1016/j.carbpol.2021.118492] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/04/2021] [Accepted: 07/25/2021] [Indexed: 01/21/2023]
Abstract
The separation of crude oil from oily water and collection of the emulsion constituents has attracted significant attention. We demonstrate that the relationships between inherent dynamic factors and the performance of a Pickering emulsion stabilized by SiO2 particles with adsorbed hydrophobically modified sodium alginate derivatives (HMSA), a natural pH-sensitive polysaccharide, can be clarified via a multi-scale methodology. Functionalization of the silica surface with HMSA controls particle dispersibility, as verified by turbidity and stability analyses, the zeta potential, and transmission electron microscopy measurements. The interaction mechanism between HMSA and SiO2 nanoparticles was elucidated by both experimental adsorption measurements and computer simulations, which showed qualitative consistency. The aggregation/disaggregation of HMSA/SiO2 particles achieved by tuning the pH of the solution facilitated reversible dispersibility/collectability behavior. Overall, a high-viscosity Pickering emulsion system based on particle-particle and droplet-droplet interactions, which can be filtered for the recovery of spilled crude oil, was demonstrated.
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Affiliation(s)
- Xinyu Zhao
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou, Hainan 570228, China
| | - Furui He
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou, Hainan 570228, China
| | - Gaobo Yu
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou, Hainan 570228, China.
| | - Yuhong Feng
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou, Hainan 570228, China.
| | - Jiacheng Li
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou, Hainan 570228, China.
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15
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Yang S, Qin W, He F, Zhao X, Zhou Q, Lin F, Gong H, Zhang S, Yu G, Feng Y, Li J. Tuning Supramolecular Polymers' Amphiphilicity via Host-Guest Interfacial Recognition for Stabilizing Multiple Pickering Emulsions. ACS APPLIED MATERIALS & INTERFACES 2021; 13:51661-51672. [PMID: 34696581 DOI: 10.1021/acsami.1c13715] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Supramolecular host-guest chemistry bridging the adjustable amphiphilicity and macromolecular self-assembly is well advanced in aqueous media. However, the interfacial self-assembled behaviors have not been further exploited. Herein, we designed a β-cyclodextrin-grafted alginate/azobenzene-functionalized dodecyl (Alg-β-CD/AzoC12) supra-amphiphilic system that possessed tunable amphiphilicity by host-guest interfacial self-assembly. Especially, supra-amphiphilic aggregates could be utilized as highly efficient soft colloidal emulsifiers for stabilizing water-in-oil-water (W/O/W) Pickering emulsions due to the excellent interfacial activity. Meanwhile, the assembled particle structures could be modulated by adjusting the oil-water ratio, resulting from the tunable aggregation behavior of supra-amphiphilic macromolecules. Additionally, the interfacial adsorption films could be partially destroyed/reconstructed upon ultraviolet/visible irradiation due to the stimuli-altering balance of amphiphilicity of Alg-β-CD/AzoC12 polymers, further constructing the stimulus-responsive Pickering emulsions. Therefore, the supramolecular interfacial self-assembly-mediated approach not only technologically advances the continued development of creative templates to construct multifunctional soft materials with anisotropic structures but also serves as a creative bridge between supramolecular host-guest chemistry, colloidal interface science, and soft material technology.
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Affiliation(s)
- Shujuan Yang
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Wenqi Qin
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Furui He
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Xinyu Zhao
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Qichang Zhou
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Feilin Lin
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Houkui Gong
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Siqi Zhang
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Gaobo Yu
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Yuhong Feng
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Jiacheng Li
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
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16
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Lin F, Zhao X, Yang S, He F, Qin W, Gong H, Yu G, Feng Y, Li J. Interfacial regulation and visualization of Pickering emulsion stabilized by Ca2+-triggered amphiphilic alginate-based fluorescent aggregates. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106843] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Yang S, Qin W, Zhao X, He F, Gong H, Liu Y, Feng Y, Zhou Y, Yu G, Li J. Interfacial self-assembled behavior of pH/light-responsive host-guest alginate-based supra-amphiphiles for controlling emulsifying property. Carbohydr Polym 2021; 266:118121. [PMID: 34044937 DOI: 10.1016/j.carbpol.2021.118121] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 04/01/2021] [Accepted: 04/23/2021] [Indexed: 10/21/2022]
Abstract
Soft emulsifiers with relatively suitable structural controllability are necessarily required for the preparation of multifunctional Pickering emulsions. Herein, a β-cyclodextrin-grafted alginate/azobenzene-functionalized dodecyl (Alg-β-CD/AzoC. 12) polymeric supra-amphiphile was designed based on the host-guest interfacial self-assembly. As compared with Alg-β-CD amphiphilic polymers, the interfacial tension of Alg-β-CD/AzoC12 supra-amphiphilic assemblies reduced from 29.57 mN/m to 0.18 mN/m, indicating the great amphiphilicity derived from Alg-β-CD/AzoC12 supra-amphiphilic assemblies. With the increase of pH, the interfacial microstructures transformed from flocculated structures, spherical structures into deformed structures. Especially, the spherical microstructures with the highest interfacial viscoelasticity and thickness demonstrated the highest emulsifying efficiency due to the steric hindrance mechanism. Moreover, the interfacial elastic modulus of adsorbed layers exhibited ~4 times of that upon the ultraviolet illumination. These results disclosed that the interfacial microstructures could be readily regulated by the tunable amphiphilicity of Alg-β-CD/AzoC12 assemblies, which would be useful for the applications of Pickering emulsions in numerous fields.
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Affiliation(s)
- Shujuan Yang
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China
| | - Wenqi Qin
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China
| | - Xinyu Zhao
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China
| | - Furui He
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China
| | - Houkui Gong
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China
| | - Yuanyuan Liu
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China
| | - Yuhong Feng
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China
| | - Yang Zhou
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China.
| | - Gaobo Yu
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China.
| | - Jiacheng Li
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China.
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Liu Q, Chang X, Shan Y, Fu F, Ding S. Fabrication and characterization of Pickering emulsion gels stabilized by zein/pullulan complex colloidal particles. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:3630-3643. [PMID: 33275778 DOI: 10.1002/jsfa.10992] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 11/25/2020] [Accepted: 12/04/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Zein particles are unsuitable as stabilizers of Pickering emulsions because of their high hydrophobicity. However, few studies have reported on the use of a strong hydrophilic neutral polysaccharide to regulate its wettability. In this work, zein/pullulan complex particles (ZPPs) were formulated by an anti-solvent method to fabricate Pickering emulsions. RESULTS The presence of pullulan increased the size, decreased the zeta, and provided excellent resistance to the gravitational separation of zein. Scanning electron microscopy (SEM) revealed that the shape of zein particles changed from spherical as they became aggregated ZPP nanoparticles. Fourier transform infrared (FTIR) spectroscopy indicated that the flocculation phenomenon of ZPPs was related to the hydrogen bond between zein and pullulan. Moreover, the hydrophobicity of zein was modified by hydrophilic pullulan to endow the ZPPs with nearly neutral wettability when the mass ratio was 15:1, allowing for the preparation of stable Pickering emulsions. In contrast to zein, the ZPPs contributed to building a compact interface layer around the droplets and smaller emulsion droplets. Under a certain ZPP concentration, the size and viscosity of emulsion increased with an increase in the oil volume fraction, indicating that the Pickering emulsions stabilized by ZPPs showed better stability against coalescence. Confocal laser scanning microscopy (CLSM) revealed that the ZPPs constructed a dense filling layer on the surface of oil droplets, thus further emphasizing that ZPPs can potentially be used in fabricating Pickering emulsion gels. CONCLUSION Zein/pullulan complex particles are an excellent Pickering emulsion gel stabilizer that can be used in the delivery system of bioactive substances in food formulations. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Qian Liu
- Longping Branch Graduate School, Hunan University, Changsha, China
- Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Hunan Provincial Key Laboratory for Fruits and Vegetables Storage Processing and Quality Safety, Changsha, China
- Hunan Province International Joint Lab on Fruits & Vegetables Processing, Quality and Safety, Changsha, China
| | - Xia Chang
- Longping Branch Graduate School, Hunan University, Changsha, China
- Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Hunan Provincial Key Laboratory for Fruits and Vegetables Storage Processing and Quality Safety, Changsha, China
- Hunan Province International Joint Lab on Fruits & Vegetables Processing, Quality and Safety, Changsha, China
| | - Yang Shan
- Longping Branch Graduate School, Hunan University, Changsha, China
- Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Hunan Provincial Key Laboratory for Fruits and Vegetables Storage Processing and Quality Safety, Changsha, China
- Hunan Province International Joint Lab on Fruits & Vegetables Processing, Quality and Safety, Changsha, China
| | - Fuhua Fu
- Longping Branch Graduate School, Hunan University, Changsha, China
- Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Hunan Provincial Key Laboratory for Fruits and Vegetables Storage Processing and Quality Safety, Changsha, China
- Hunan Province International Joint Lab on Fruits & Vegetables Processing, Quality and Safety, Changsha, China
| | - Shenghua Ding
- Longping Branch Graduate School, Hunan University, Changsha, China
- Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Hunan Provincial Key Laboratory for Fruits and Vegetables Storage Processing and Quality Safety, Changsha, China
- Hunan Province International Joint Lab on Fruits & Vegetables Processing, Quality and Safety, Changsha, China
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Velandia SF, Marchal P, Lemaitre C, Sadtler V, Roques-Carmes T. Evaluation of the repartition of the particles in Pickering emulsions in relation with their rheological properties. J Colloid Interface Sci 2021; 589:286-297. [PMID: 33472148 DOI: 10.1016/j.jcis.2021.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/21/2020] [Accepted: 01/03/2021] [Indexed: 10/22/2022]
Abstract
HYPOTHESIS The distribution of particles in Pickering emulsions can be estimated through a percolation-type approach coupled to the evolution of their rheological features with the dispersed phase volume fraction ϕ. EXPERIMENTS The rheological behavior of water-in-dodecane Pickering emulsions stabilized with hydrophobic silica nanoparticles is addressed. The emulsions viscosity and elastic modulus are investigated at ϕ varying from 0.1 to 0.75. Various rheological models are adjusted to the experimental data. FINDINGS The comparison of the elastic modulus evolution of the Pickering emulsions with those of emulsions stabilized with surfactants confirms a major contribution of the particles to the rheological behavior of Pickering emulsions and supports the existence of a three-dimensional network between the droplets. The applied percolation approach allows to quantitively estimate a nanoparticles viscoelastic link between the droplets and opposes the classic vision of interfacial monolayers stabilizing the Pickering emulsions. This network of interconnected particles and droplets contributes significantly to the viscosity as well as the elastic modulus of these emulsions. To our knowledge, the applied percolation-based model is the only one capable of providing a structural explanation while describing the abrupt viscosity and elastic modulus growth of Pickering emulsions across the range of ϕ.
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Affiliation(s)
- Santiago F Velandia
- Laboratoire Réactions et Génie des Procédés, UMR 7274 CNRS, Université de Lorraine, 1 rue Grandville, 54001 Nancy, France.
| | - Philippe Marchal
- Laboratoire Réactions et Génie des Procédés, UMR 7274 CNRS, Université de Lorraine, 1 rue Grandville, 54001 Nancy, France.
| | - Cécile Lemaitre
- Laboratoire Réactions et Génie des Procédés, UMR 7274 CNRS, Université de Lorraine, 1 rue Grandville, 54001 Nancy, France.
| | - Véronique Sadtler
- Laboratoire Réactions et Génie des Procédés, UMR 7274 CNRS, Université de Lorraine, 1 rue Grandville, 54001 Nancy, France.
| | - Thibault Roques-Carmes
- Laboratoire Réactions et Génie des Procédés, UMR 7274 CNRS, Université de Lorraine, 1 rue Grandville, 54001 Nancy, France.
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Zhao X, Fang X, Yang S, Zhang S, Yu G, Liu Y, Zhou Y, Feng Y, Li J. Light-tuning amphiphility of host-guest Alginate-based supramolecular assemblies for photo-responsive Pickering emulsions. Carbohydr Polym 2021; 251:117072. [DOI: 10.1016/j.carbpol.2020.117072] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 09/06/2020] [Accepted: 09/07/2020] [Indexed: 01/10/2023]
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21
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Hunter SJ, Armes SP. Pickering Emulsifiers Based on Block Copolymer Nanoparticles Prepared by Polymerization-Induced Self-Assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:15463-15484. [PMID: 33325720 PMCID: PMC7884006 DOI: 10.1021/acs.langmuir.0c02595] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/27/2020] [Indexed: 05/28/2023]
Abstract
Block copolymer nanoparticles prepared via polymerization-induced self-assembly (PISA) represent an emerging class of organic Pickering emulsifiers. Such nanoparticles are readily prepared by chain-extending a soluble homopolymer precursor using a carefully selected second monomer that forms an insoluble block in the chosen solvent. As the second block grows, it undergoes phase separation that drives in situ self-assembly to form sterically stabilized nanoparticles. Conducting such PISA syntheses in aqueous solution leads to hydrophilic nanoparticles that enable the formation of oil-in-water emulsions. Alternatively, hydrophobic nanoparticles can be prepared in non-polar media (e.g., n-alkanes), which enables water-in-oil emulsions to be produced. In this review, the specific advantages of using PISA to prepare such bespoke Pickering emulsifiers are highlighted, which include fine control over particle size, copolymer morphology, and surface wettability. This has enabled various fundamental scientific questions regarding Pickering emulsions to be addressed. Moreover, block copolymer nanoparticles can be used to prepare Pickering emulsions over various length scales, with mean droplet diameters ranging from millimeters to less than 200 nm.
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Affiliation(s)
- Saul J. Hunter
- Department of Chemistry,
Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire S3 7HF, U.K.
| | - Steven P. Armes
- Department of Chemistry,
Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire S3 7HF, U.K.
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