1
|
Alexandraki S, Leontidis E. Towards the systematic design of multilayer O/W emulsions with tannic acid as an interfacial antioxidant. RSC Adv 2021; 11:23616-23626. [PMID: 35479771 PMCID: PMC9036574 DOI: 10.1039/d1ra03512f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 06/30/2021] [Indexed: 11/21/2022] Open
Abstract
This work discusses the possibility of designing multilayer oil-in-water emulsions to introduce the maximum possible amount of an antioxidant at the droplet interfaces for the optimal protection of a linseed oil core against oxidation, using a systematic three-step colloidal procedure. An antioxidant (here Tannic Acid - TA) is chosen and its interactions with a primary emulsifier (here Bovine Serum Albumin - BSA) and several polysaccharides are first examined in solution using turbidity measurements. As a second step, LbL deposition on solid surfaces is used to determine which of the polysaccharides to combine with BSA and tannic acid in a multilayer system to ensure maximum presence of tannic acid in the films. From UV-vis and polarization modulation infrared reflection-absorption (PM-IRRAS) spectroscopic measurements it is suggested that the best components to use in a multilayer emulsion droplet, together with BSA and TA, are chitosan and pectin. BSA, chitosan and pectin are subsequently used for the formation of three-layer linseed oil emulsions, and tannic acid is introduced into any of the three layers as an antioxidant. The effect of the exact placement of tannic acid on the oxidative stabilization of linseed oil is assessed by monitoring the fluorescence of Nile red, dissolved in the oil droplets, under the attack of radicals generated in the aqueous phase of the emulsion. From the results it appears that the three-stage procedure presented here can serve to identify successful combinations of interfacial components of multilayer emulsions. It is also concluded that the exact interfacial placement of the antioxidant plays an important role in the oxidative stabilization of the valuable oil core.
Collapse
Affiliation(s)
- Savvia Alexandraki
- Department of Chemistry, University of Cyprus P. O Box 20537 Nicosia 1678 Cyprus
| | | |
Collapse
|
2
|
Peng H, Xu W, Pich A. Temperature and pH dual-responsive poly(vinyl lactam) copolymers functionalized with amine side groups via RAFT polymerization. Polym Chem 2016. [DOI: 10.1039/c6py00885b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A series of statistical copolymers based on cyclic N-vinyl lactams and N-vinylformamide were synthesized via RAFT polymerization. Tempertaure/pH dual responsive polymers were obtained via hydrolysis the copolymers in alkaline conditions.
Collapse
Affiliation(s)
- Huan Peng
- Functional and Interactive Polymers
- Institute of Technical and Macromolecular Chemistry
- RWTH Aachen University
- D-52074 Aachen
- Germany
| | - Wenjing Xu
- Functional and Interactive Polymers
- Institute of Technical and Macromolecular Chemistry
- RWTH Aachen University
- D-52074 Aachen
- Germany
| | - Andrij Pich
- Functional and Interactive Polymers
- Institute of Technical and Macromolecular Chemistry
- RWTH Aachen University
- D-52074 Aachen
- Germany
| |
Collapse
|
3
|
Cheng M, Jiang C, Luo C, Zhang Y, Shi F. Investigating Zigzag Film Growth Behaviors in Layer-by-Layer Self-Assembly of Small Molecules through a High-Gravity Technique. ACS APPLIED MATERIALS & INTERFACES 2015; 7:18824-18831. [PMID: 26258488 DOI: 10.1021/acsami.5b05555] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The zigzag film growth behavior in the layer-by-layer (LbL) assembly method is a ubiquitous phenomenon for which the growth mechanism was rarely investigated, especially for small molecules. To interpret the zigzag increasing manner, we hypothesized that the desorption kinetics of small molecules was dominant for the film growth behavior and demonstrated this hypotheis by introducing the high-gravity technique into the LbL assembly of a typical polyelectrolyte/small molecule system of polyethylenimine (PEI) and meso-tetra(4-carboxyphenyl)porphine (Por). The results showed that the high-gravity technique remarkably accelerated the desorption process of Por; the high-gravity LbL assembly provides a good platform to reveal the desorption kinetics of Por, which is tedious to study in conventional situation. We found that as much as 50 min is required for Por molecules to reach desorption equilibrium from the substrate to the bulk PEI solution for the conventional dipping method; however, the process could be accelerated and require only 100 s if a high-gravity field is used. Nonequilibrated desorption at 10 min for normal dipping and at 30 s for high-gravity-field-assisted assembly both exhibited a zigzag film growth, but after reaching desorption equilibrium at 100 s under a high-gravity field, film growth began to cycle between assembly and complete disassembly instead of LbL assembly. For the first time we have proven that the high-gravity technique can also accelerate the desorption process and demonstrated the desorption-dependent mechanism of small molecules for zigzag film growth behaviors.
Collapse
Affiliation(s)
- Mengjiao Cheng
- State Key Laboratory of Chemical Resource Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology , Beijing, China
| | - Chao Jiang
- State Key Laboratory of Chemical Resource Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology , Beijing, China
| | - Caijun Luo
- State Key Laboratory of Chemical Resource Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology , Beijing, China
| | - Yajun Zhang
- State Key Laboratory of Chemical Resource Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology , Beijing, China
| | - Feng Shi
- State Key Laboratory of Chemical Resource Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology , Beijing, China
| |
Collapse
|
4
|
Borges J, Mano JF. Molecular Interactions Driving the Layer-by-Layer Assembly of Multilayers. Chem Rev 2014; 114:8883-942. [DOI: 10.1021/cr400531v] [Citation(s) in RCA: 609] [Impact Index Per Article: 60.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- João Borges
- 3B’s
Research Group—Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra,
S. Cláudio do Barco 4806-909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s
− PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João F. Mano
- 3B’s
Research Group—Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra,
S. Cláudio do Barco 4806-909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s
− PT Government Associate Laboratory, Braga/Guimarães, Portugal
| |
Collapse
|
5
|
Zimmerer C, Heinrich G, Wolff-Fabris F, Koch E, Steiner G. Chemical reactions between poly(carbonate) and poly(vinyl amine) thermally induced by a high magnetic field pulse. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.10.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
6
|
Fujii N, Fujimoto K, Michinobu T, Akada M, Hill JP, Shiratori S, Ariga K, Shigehara K. The Simplest Layer-by-Layer Assembly Structure: Best Paired Polymer Electrolytes with One Charge per Main Chain Carbon Atom for Multilayered Thin Films. Macromolecules 2010. [DOI: 10.1021/ma100473j] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Nozomu Fujii
- Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Kouji Fujimoto
- Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
| | - Tsuyoshi Michinobu
- Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
- Global Edge Institute, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Misaho Akada
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) and JST, CREST, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Jonathan P. Hill
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) and JST, CREST, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Seimei Shiratori
- Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
| | - Katsuhiko Ariga
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) and JST, CREST, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Kiyotaka Shigehara
- Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| |
Collapse
|
7
|
Ajiro H, Takemoto Y, Asoh TA, Akashi M. Novel polyion complex with interpenetrating polymer network of poly(acrylic acid) and partially protected poly(vinylamine) using N-vinylacetamide and N-vinylformamide. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.06.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
8
|
Sukhishvili SA, Kharlampieva E, Izumrudov V. Where Polyelectrolyte Multilayers and Polyelectrolyte Complexes Meet. Macromolecules 2006. [DOI: 10.1021/ma061617p] [Citation(s) in RCA: 244] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Svetlana A. Sukhishvili
- Department of Polymer Chemistry, Moscow State University, 119992 Moscow, Russia, and Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, New Jersey 07030
| | - Eugenia Kharlampieva
- Department of Polymer Chemistry, Moscow State University, 119992 Moscow, Russia, and Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, New Jersey 07030
| | - Vladimir Izumrudov
- Department of Polymer Chemistry, Moscow State University, 119992 Moscow, Russia, and Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, New Jersey 07030
| |
Collapse
|
9
|
Serizawa T, Kawanishi N, Akashi M. Polyelectrolyte multilayers of poly(vinylamine hydrochloride-co-N-vinylformamide) with variable primary amine content and a weak polyacid poly(acrylic acid). J Appl Polym Sci 2006. [DOI: 10.1002/app.24199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
10
|
Serizawa T, Matsukuma D, Nanameki K, Uemura M, Kurusu F, Akashi M. Stepwise Preparation and Characterization of Ultrathin Hydrogels Composed of Thermoresponsive Polymers. Macromolecules 2004. [DOI: 10.1021/ma049154f] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takeshi Serizawa
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan, and Department of Bioengineering, Faculty of Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Daisuke Matsukuma
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan, and Department of Bioengineering, Faculty of Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Kazuhisa Nanameki
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan, and Department of Bioengineering, Faculty of Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Masami Uemura
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan, and Department of Bioengineering, Faculty of Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Fumiyo Kurusu
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan, and Department of Bioengineering, Faculty of Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Mitsuru Akashi
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan, and Department of Bioengineering, Faculty of Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| |
Collapse
|
11
|
Schach R, Hommel H, Van Damme H, Dejardin P, Amsterdamsky C. Formation of weak polyelectrolyte multilayers studied by spin labeling. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:3173-9. [PMID: 15875845 DOI: 10.1021/la030202j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Multilayers of alternately adsorbing poly(allylamine) (PAH) and poly(acrylic acid) (PAA) of opposite charges on silica have been studied by the spin labeling technique, as a function of pH. The two polyelectrolytes have been labeled independently by a nitroxide free radical. Its electron paramagnetic resonance spectrum is mainly sensitive to the local Brownian motion and shows lines typical of two different environments, namely, loops protruding in solution with a fast motion and trains adsorbed on the solid with a hindered motion. These two parts have been evaluated for each of the polymer layers separately, and the thickness of the coatings has been described more precisely by characterizing the four contributions existing, for example, for a bilayer. Complexation is demonstrated by the loss of loops and tails belonging to the first polyelectrolyte. The overall picture emerging from the data is explained in terms of compensation of charges and entropy of confinement.
Collapse
Affiliation(s)
- R Schach
- Laboratoire de Physico Chimie Structurale et Macromoleculaire, UMR 7615 CNRS, Ecole Supérieure de Physique et Chimie Industrielles, 75231 Paris Cedex 05, France
| | | | | | | | | |
Collapse
|
12
|
Schoeler B, Sharpe S, Hatton TA, Caruso F. Polyelectrolyte multilayer films of different charge density copolymers with synergistic nonelectrostatic interactions prepared by the layer-by-layer technique. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:2730-2738. [PMID: 15835145 DOI: 10.1021/la035909k] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Random copolymers composed of diallyldimethylammonium chloride (DADMAC) and acrylamide with varying contents (8-100 mol %) of the cationic DADMAC component were alternated with polyanionic, fully charged poly(styrenesulfonate) to form multilayer thin films. UV-vis spectrophotometry, FTIR spectroscopy, and quartz-crystal microgravimetry (QCM) were employed to follow multilayer buildup. Atomic force microscopy was used to obtain structural information. Layer thicknesses have been determined with small-angle X-ray scattering and ellipsometry, in addition to values calculated from QCM. While in previous work, a critical charge density limit could be observed, below which no layer growth is possible; in this system, multilayer formation takes place with copolymers with charge densities as low as 8 mol %. Instead of a continuous increase of adsorbed amounts with decreasing charge density above the critical charge density, as found in previous work, similar layer thicknesses for films with 100 and 8 mol % charged polyelectrolytes and maximally adsorbed amounts for copolymers in an intermediate charge density region have been found. This adsorption behavior is explained in terms of synergistic nonelectrostatic interactions between the polyelectrolytes used.
Collapse
Affiliation(s)
- Bjoern Schoeler
- Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam, Golm, Germany
| | | | | | | |
Collapse
|
13
|
Poptoshev E, Schoeler B, Caruso F. Influence of solvent quality on the growth of polyelectrolyte multilayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:829-834. [PMID: 15773111 DOI: 10.1021/la035485u] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The effect of solvent conditions on the growth of polyelectrolyte (PE) multilayer films comprising poly(allylamine hydrochloride) (PAH) and poly(styrenesulfonate sodium salt) (PSS) on planar substrates was investigated by means of surface plasmon resonance spectroscopy (SPRS), quartz crystal microbalance (QCM), and atomic force microscopy techniques. The solvent quality was varied by the addition of ethanol to the PE solutions used for deposition of the layers, thus tuning the relative strength of electrostatic and secondary intermolecular and intramolecular interactions. Experiments were performed with PE solutions both without added electrolyte and containing 0.5 M NaCl. Decreasing the solvent quality (i.e., increasing the amount of ethanol in the adsorption solution) resulted in a marked increase of both the multilayer film thickness and mass loading, as determined from the SPRS spectra and QCM frequency shifts, respectively. With the solution composition approaching the precipitation point, thick PAH/PSS films were formed due to the screening of the electrostatic intra- and interchain repulsions and enhanced hydrophobic interactions between the polyelectrolyte chains. However, the films formed from water/ethanol mixtures remained stable upon subsequent exposure to water or salt-containing solutions: no significant film desorption occurred after up to 24 h of exposure to water or 0.5 M NaCl solutions. In addition, the effect of postdeposition exposure to water/ethanol mixtures was investigated for PE multilayers assembled from aqueous solutions. In this case, the optical thickness of the films was determined during exposure to water/ethanol mixtures, and instead of swelling, the polyelectrolyte films collapse to the surface as a result of the unfavorable segment-solvent interactions.
Collapse
Affiliation(s)
- Evgeni Poptoshev
- Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam, Germany
| | | | | |
Collapse
|