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Meng Y, Nicolai T. The effect of the contact angle on particle stabilization and bridging in water-in-water emulsions. J Colloid Interface Sci 2023; 638:506-512. [PMID: 36764244 DOI: 10.1016/j.jcis.2023.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/26/2023] [Accepted: 02/01/2023] [Indexed: 02/07/2023]
Abstract
HYPOTHESIS Water-in-water (W/W) emulsions formed by mixing incompatible polymers in aqueous solution can in some cases be stabilized by adding particles that adsorb spontaneously at the W/W interface. The importance of the contact angle of the particles with the interface on the stability of W/W emulsions is still an outstanding issue. We hypothesize that if the contact angle with the continuous phase is smaller than 90°, particles can bridge dispersed droplets, which enhances the stability of the emulsion. EXPERIMENTS The W/W emulsions consisted of a dispersed poly(ethylene oxide) (PEO) phase in a continuous dextran phase or vice versa. Gelatin microgels were added and their contact angle was varied by varying the pH. The morphology during aging was observed by microscopy. FINDINGS The contact angle of the microgels with the PEO phase varied between 110° close to neutral pH and 0° at pH 3 and pH 11. The W/W emulsions were stable only when the contact angle with the continuous phase was smaller than 90°. In this case, microgels could form bridges between dispersed droplets creating a network of droplets.
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Affiliation(s)
- Yuwen Meng
- Le Mans Université, IMMM UMR-CNRS 6283, 72085, cedex 9, Le Mans, France.
| | - Taco Nicolai
- Le Mans Université, IMMM UMR-CNRS 6283, 72085, cedex 9, Le Mans, France.
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2
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Moreira A, Campos J, Miranda J. Characterization of gelatin microparticle production in a flow focusing microfluidic system. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
Environmentally friendly alternatives have become sought after upon the development of scientific research and industrial processes. Recent trends suggest biodegradable polymers as the most promising solution for synthetic microcapsule systems. Safety, efficiency, biocompatibility, and biodegradability are some of the properties that biodegradable systems in microencapsulation can provide for a broad spectrum of applications. The controlled release of encapsulated active agents is a research field that, over the years, has been constantly innovating due to the promising applications in the areas of pharmaceutical, cosmetic, textile industry, among others. This article presents an overview of different polymers with potential for microcapsule synthesis, namely, biodegradable polymers. First, natural polymers are discussed, which are divided into two categories: polysaccharide-based polymers (cellulose, starch, chitosan, and alginate) and protein polymers (gelatin). Second, synthetic polymers are described, where biodegradable polymers such as polyesters, polyamides, among others appear as examples. For each polymer, this review presents its origin, relevant properties, applications, and examples found in the literature regarding its use in biodegradable microencapsulation systems.
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Troy E, Tilbury MA, Power AM, Wall JG. Nature-Based Biomaterials and Their Application in Biomedicine. Polymers (Basel) 2021; 13:3321. [PMID: 34641137 PMCID: PMC8513057 DOI: 10.3390/polym13193321] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/09/2021] [Accepted: 09/17/2021] [Indexed: 02/07/2023] Open
Abstract
Natural polymers, based on proteins or polysaccharides, have attracted increasing interest in recent years due to their broad potential uses in biomedicine. The chemical stability, structural versatility, biocompatibility and high availability of these materials lend them to diverse applications in areas such as tissue engineering, drug delivery and wound healing. Biomaterials purified from animal or plant sources have also been engineered to improve their structural properties or promote interactions with surrounding cells and tissues for improved in vivo performance, leading to novel applications as implantable devices, in controlled drug release and as surface coatings. This review describes biomaterials derived from and inspired by natural proteins and polysaccharides and highlights their promise across diverse biomedical fields. We outline current therapeutic applications of these nature-based materials and consider expected future developments in identifying and utilising innovative biomaterials in new biomedical applications.
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Affiliation(s)
- Eoin Troy
- Microbiology, College of Science and Engineering, National University of Ireland, NUI Galway, H91 TK33 Galway, Ireland; (E.T.); (M.A.T.)
| | - Maura A. Tilbury
- Microbiology, College of Science and Engineering, National University of Ireland, NUI Galway, H91 TK33 Galway, Ireland; (E.T.); (M.A.T.)
- SFI Centre for Medical Devices (CÚRAM), NUI Galway, H91 TK33 Galway, Ireland
| | - Anne Marie Power
- Zoology, School of Natural Sciences, NUI Galway, H91 TK33 Galway, Ireland;
| | - J. Gerard Wall
- Microbiology, College of Science and Engineering, National University of Ireland, NUI Galway, H91 TK33 Galway, Ireland; (E.T.); (M.A.T.)
- SFI Centre for Medical Devices (CÚRAM), NUI Galway, H91 TK33 Galway, Ireland
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Harguindeguy M, Antonelli C, Belleville M, Sanchez‐Marcano J, Pochat‐Bohatier C. Gelatin supports with immobilized laccase as sustainable biocatalysts for water treatment. J Appl Polym Sci 2020. [DOI: 10.1002/app.49669] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Marine Harguindeguy
- Institut Européen des Membranes, IEM UMR 5635 Univ Montpellier, CNRS, ENSCM Montpellier France
| | - Claire Antonelli
- Institut Européen des Membranes, IEM UMR 5635 Univ Montpellier, CNRS, ENSCM Montpellier France
| | - Marie‐Pierre Belleville
- Institut Européen des Membranes, IEM UMR 5635 Univ Montpellier, CNRS, ENSCM Montpellier France
| | - José Sanchez‐Marcano
- Institut Européen des Membranes, IEM UMR 5635 Univ Montpellier, CNRS, ENSCM Montpellier France
| | - Céline Pochat‐Bohatier
- Institut Européen des Membranes, IEM UMR 5635 Univ Montpellier, CNRS, ENSCM Montpellier France
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Li BZ, Xian XQ, Wang Y, Adhikari B, Chen D. Production of recrystallized starch microspheres using water-in-water emulsion and multiple recycling of polyethylene glycol solution. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.06.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Colloidal characteristics and functionality of rationally designed esculin-loaded hydrogel microcapsules. J Colloid Interface Sci 2018; 530:444-458. [DOI: 10.1016/j.jcis.2018.07.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/29/2018] [Accepted: 07/02/2018] [Indexed: 02/04/2023]
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8
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Prosapio V, De Marco I, Reverchon E. Supercritical antisolvent coprecipitation mechanisms. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2018.04.021] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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9
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Li C, Liu C. Characterization of agarose microparticles prepared by water-in-water emulsification. PARTICULATE SCIENCE AND TECHNOLOGY 2018. [DOI: 10.1080/02726351.2017.1279698] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Chengbo Li
- College of Marine Life Sciences, Ocean University of China, Qingdao, P. R. China
| | - Chenguang Liu
- College of Marine Life Sciences, Ocean University of China, Qingdao, P. R. China
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Effect of molecular weight of starch on the properties of cassava starch microspheres prepared in aqueous two-phase system. Carbohydr Polym 2017; 177:334-340. [DOI: 10.1016/j.carbpol.2017.08.074] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/16/2017] [Accepted: 08/17/2017] [Indexed: 11/20/2022]
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11
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Tsirigotis-Maniecka M, Lamch Ł, Chojnacka I, Gancarz R, Wilk KA. Microencapsulation of hesperidin in polyelectrolyte complex microbeads: Physico-chemical evaluation and release behavior. J FOOD ENG 2017. [DOI: 10.1016/j.jfoodeng.2017.06.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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12
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Amonpattaratkit P, Khunmanee S, Kim DH, Park H. Synthesis and Characterization of Gelatin-Based Crosslinkers for the Fabrication of Superabsorbent Hydrogels. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E826. [PMID: 28773186 PMCID: PMC5551869 DOI: 10.3390/ma10070826] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 06/30/2017] [Accepted: 07/10/2017] [Indexed: 11/16/2022]
Abstract
In this work, crosslinkers were prepared by conjugating high- and low-molecular-weight gelatin with different mole ratios of itaconic acid (IA) with double bonds. Then, the gelatin-itaconic acid (gelatin-IA) crosslinkers were compared with the gelatin-methacrylate (gelatin-MA) crosslinkers. The molecular weights and structures of gelatin-MA and gelatin-IA were confirmed using gel permeation chromatography (GPC) and nuclear magnetic resonance (NMR). Additionally, the swelling ratio and biodegradation properties of the hydrogels using IA as starting monomers and gelatin-IA and gelatin-MA as crosslinkers were investigated. Both hydrogels prepared with high and low molecular weights of gelatin-IA showed higher swelling ratios than those prepared with the gelatin-MA. The results also showed that absorbent hydrogels with different biodegradabilities and swelling ratios could be prepared by changing the ratio of the gelatin-based crosslinkers.
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Affiliation(s)
| | - Sureerat Khunmanee
- Department of Integrative Engineering, Chung-Ang University, Seoul 156756, Korea.
| | - Dong Hyun Kim
- Korea Institute of Industrial Technology, Gyeonggi 15588, Korea.
| | - Hansoo Park
- Department of Integrative Engineering, Chung-Ang University, Seoul 156756, Korea.
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Phadke KV, Manjeshwar LS, Aminabhavi TM. Microspheres of Gelatin and Poly(ethylene glycol) Coated with Ethyl Cellulose for Controlled Release of Metronidazole. Ind Eng Chem Res 2014. [DOI: 10.1021/ie404052q] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keerti V. Phadke
- Department
of Chemistry, Karnatak University, Dharwad, 580 003, Karnataka, India
| | - Lata S. Manjeshwar
- Department
of Chemistry, Karnatak University, Dharwad, 580 003, Karnataka, India
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Abstract
Phase diagram of aqueous two-phase system (ATPS) composed of polyethylene glycol (PEG) and gelatin is of paramount importance for the application of such system in microencapsulation of bioactive compounds. Phase separation of PEG/gelatin aqueous solution was investigated in the present work and the phase diagram of resultant ATPS was reported for the first time. The results show that phase separation will happen if the solid content of PEG/gelatin aqueous solution is higher than a critical value, resulting in an ATPS. The resultant ATPS consists of a low-density phase enriched in PEG and a dense phase enriched in gelatin. The phase compositions of the resultant ATPS were determined accurately using the method developed. The phase diagrams obtained show that higher solid content is required for the phase separation of PEG10,000/gelatin aqueous solution when compared with that of PEG20,000/gelatin one. And PEG is found to be more hydrophilic when compared with gelatin.
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