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Ma N, Wang X, Zhang M, Lu S, Hua Z, Wu Z, An R, Li L. Programmable Interactions of Cellulose Acetate with Octadecyltrichlorosilane-Functionalized SiO 2 Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5956-5969. [PMID: 37084536 DOI: 10.1021/acs.langmuir.2c03232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
It is significant to understand the interfacial interactions involved between the cellulose acetate (CA) and dispersed nanomaterials, in which the enhanced interaction improves the mechanical behavior of CA. In this work, the amendments of CA with SiO2 nanoparticles have been found to be endowed by grafting varying concentrations (0, 3, 5, and 6%) of octadecyltrichlorosilane (OTS). Aided by SiO2 colloid probe atomic force microscopy (AFM with a probe diameter of 20 μm), the adhesion force between CA and SiO2 is found to be programmable by tuning OTS concentrations functionalized onto SiO2 surfaces. The adhesion forces of 5% OTS-functionalized SiO2 with CA are the strongest, followed by the ones of 0, 3, and 6% OTS, resulting in a smoother and denser morphology on the film with 5% OTS. The AFM-measured approaching force-distance curves have been further compared to predictions by the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory, in which the XDLVO force is summed as the Liftshitz-van der Waals force (FLW), the electrostatic double-layer force (FEL), and the acid-base interaction force (FAB). FLW and FEL do not change significantly with OTS concentrations functionalized onto SiO2. However, FAB is sensitive to the functionalized OTS concentration onto SiO2 and significantly contributes to the interaction force of the composite films with 5% OTS, promoting the formation of a smooth and dense surface feature with a considerable mechanical performance demonstrated by load-displacement curves from a nanoindenter. This is highly encouraging and suggests that nanomaterials can be incorporated into CA to effectively improve their mechanical compatibility by programming the interaction between the CA matrix and nanomaterials.
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Affiliation(s)
- Na Ma
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xin Wang
- School of Materials Science and Engineering/Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Mengjie Zhang
- School of Materials Science and Engineering/Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Shenjie Lu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zelin Hua
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zhenyu Wu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Rong An
- School of Materials Science and Engineering/Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Licheng Li
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
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Vaillard AS, El Haitami A, Fontaine P, Cousin F, Gutfreund P, Goldmann M, Cantin S. Surface Pressure-Induced Interdiffused Structure Evidenced by Neutron Reflectometry in Cellulose Acetate/Polybutadiene Langmuir Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:5717-5730. [PMID: 33905653 DOI: 10.1021/acs.langmuir.1c00745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Binary blends of water-insoluble polymers are a versatile strategy to obtain nanostructured films at the air-water interface. However, there are few reported structural studies of such systems in the literature. Depending on the compatibility of the polymers and the role of the air-water interface, one can expect various morphologies. In that context, we probed Langmuir monolayers of cellulose acetate (CA), of deuterated and postoxidized polybutadiene (PBd) and three mixtures of CA/PBd at various concentrations by coupling surface pressure-area isotherms, Brewster angle microscopy (BAM), and neutron reflectometry at the air-water interface to determine their thermodynamic and structural properties. The homogeneity of the films in the vertical direction, averaged laterally over the spatial coherence length of the neutron beam (∼5 μm), was assessed by neutron reflectometry measurements using D2O/H2O subphases contrast-matched to the mixed films. At 5 mN/m, the whole mixed films can be described by a single slightly hydrated thin layer. However, at 15 mN/m, the fit of the reflectivity curves requires a two-layer model consisting of a CA/PBd blend layer in contact with the water, interdiffused with a PBd layer at the interface with air. At intermediate surface pressure (10 mN/m), the determined structure was between those obtained at 5 and 15 mN/m depending on film composition. This PBd enrichment at the air-film interface at high surface pressure, which leads to the PBd depletion in the blend monolayer at the water surface, is attributed to the hydrophobic character of this polymer compared with the predominantly hydrophilic CA.
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Affiliation(s)
| | | | - Philippe Fontaine
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, BP48, 91192 Gif sur Yvette Cedex, France
| | - Fabrice Cousin
- Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-CNRS UMR 12, F-91191 Gif-sur-Yvette, France
| | - Philipp Gutfreund
- Institut Laue-Langevin, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Michel Goldmann
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, BP48, 91192 Gif sur Yvette Cedex, France
- Institut des NanoSciences de Paris, Sorbonne Université, 4 Place Jussieu, 75252 Paris Cedex 05, France
- Faculté des Sciences Fondamentales et Biomédicales, Université de Paris, 45 rue des Sts-Pères, 75006 Paris, France
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Raghuwanshi VS, Garnier G. Cellulose Nano-Films as Bio-Interfaces. Front Chem 2019; 7:535. [PMID: 31417896 PMCID: PMC6682661 DOI: 10.3389/fchem.2019.00535] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 07/12/2019] [Indexed: 12/12/2022] Open
Abstract
Cellulose, the most abundant polymer on earth, has enormous potential in developing bio-friendly, and sustainable technological products. In particular, cellulose films of nanoscale thickness (1-100 nm) are transparent, smooth (roughness <1 nm), and provide a large surface area interface for biomolecules immobilization and interactions. These attractive film properties create many possibilities for both fundamental studies and applications, especially in the biomedical field. The three liable-OH groups on the monomeric unit of the cellulose chain provide schemes to chemically modify the cellulose interface and engineer its properties. Here, the cellulose thin film serves as a substrate for biomolecules interactions and acts as a support for bio-diagnostics. This review focuses on the challenges and opportunities provided by engineering cellulose thin films for controlling biomolecules interactions. The first part reviews the methods for preparing cellulose thin films. These are by dispersing or dissolving pure cellulose or cellulose derivatives in a solvent to coat a substrate using the spin coating, Langmuir-Blodgett, or Langmuir-Schaefer method. It is shown how different cellulose sources, preparation, and coating methods and substrate surface pre-treatment affect the film thickness, roughness, morphology, crystallinity, swelling in water, and homogeneity. The second part analyses the bio-macromolecules interactions with the cellulose thin film interfaces. Biomolecules, such as antibodies and enzymes, are adsorbed at the cellulose-liquid interface, and analyzed dry and wet. This highlights the effect of film surface morphology, thickness, crystallinity, water intake capacity, and surface pre-treatment on biomolecule adsorption, conformation, coverage, longevity, and activity. Advance characterization of cellulose thin film interface morphology and adsorbed biomolecules interactions are next reviewed. X-ray and neutron scattering/reflectivity combined with atomic force microscopy (AFM), quartz crystal microbalance (QCM), microscopy, and ellipsometer allow visualizing, and quantifying the structural morphology of cellulose-biomolecule interphase and the respective biomolecules conformations, kinetics, and sorption mechanisms. This review provides a novel insight on the advantages and challenges of engineering cellulose thin films for biomedical applications. This is to foster the exploration at the molecular level of the interaction mechanisms between a cellulose interface and adsorbed biomolecules with respect to adsorbed molecules morphology, surface coverage, and quantity. This knowledge is to engineer a novel generation of efficient and functional biomedical devices.
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Affiliation(s)
- Vikram Singh Raghuwanshi
- Bioresource Processing Research Institute of Australia (BioPRIA), Monash University, Clayton, VIC, Australia
| | - Gil Garnier
- Bioresource Processing Research Institute of Australia (BioPRIA), Monash University, Clayton, VIC, Australia
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Xu Y, Hao Q, Mandler D. Electrochemical detection of dopamine by a calixarene-cellulose acetate mixed Langmuir-Blodgett monolayer. Anal Chim Acta 2018; 1042:29-36. [PMID: 30428985 DOI: 10.1016/j.aca.2018.08.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 08/08/2018] [Indexed: 10/28/2022]
Abstract
The sensing performance of a Langmuir-Blodgett monolayer was significantly improved by controlling the film organization at the air-water interface. Cellulose acetate (CA) and 4-tert-butylcalix [6]arene (calix) were co-spread and formed a Langmuir film, which was efficiently transferred onto a preoxidized gold electrode, Auox. The modified gold electrode was applied as a fast, highly sensitive electrochemical sensing platform for the quantitative determination of a model molecule, dopamine (DA). The modified gold electrode, CA-calix/Auox, demonstrated better recognition and sensing ability towards dopamine as compared with electrodes modified by a single component. Under the optimized conditions, the reduction peak currents at the CA-calix/Auox increased linearly within the concentration range of dopamine from 5 to 100 and 100-7500 nM, and exhibited a very low limit of detection (LOD) of 2.54 nM (S/N = 3). These results suggest a simple, superior and efficient approach for the controllable rearrangement of Langmuir-Blodgett monolayers on a molecular level. The electroanalytical performance was optimized from the perspective of the electrode-electrolyte interface.
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Affiliation(s)
- Yujuan Xu
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel; School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Qingli Hao
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - Daniel Mandler
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel.
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Witt J, Mandler D, Wittstock G. Nanoparticle-Imprinted Matrices as Sensing Layers for Size-Selective Recognition of Silver Nanoparticles. ChemElectroChem 2016. [DOI: 10.1002/celc.201600321] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Julia Witt
- Faculty for Mathematics and Natural Sciences; Center of Interface Science, Institute of Chemistry; Carl von Ossietzky University of Oldenburg; 26111 Oldenburg Germany
| | - Daniel Mandler
- Institute of Chemistry; The Hebrew University of Jerusalem; Jerusalem 91904 Israel
| | - Gunther Wittstock
- Faculty for Mathematics and Natural Sciences; Center of Interface Science, Institute of Chemistry; Carl von Ossietzky University of Oldenburg; 26111 Oldenburg Germany
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Niinivaara E, Wilson BP, King AW, Kontturi E. Parameters affecting monolayer organisation of substituted polysaccharides on solid substrates upon Langmuir–Schaefer deposition. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2015.12.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Bruchiel-Spanier N, Mandler D. Nanoparticle-Imprinted Polymers: Shell-Selective Recognition of Au Nanoparticles by Imprinting Using the Langmuir-Blodgett Method. ChemElectroChem 2015. [DOI: 10.1002/celc.201402407] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hitrik M, Gutkin V, Lev O, Mandler D. Preparation and characterization of mono- and multilayer films of polymerizable 1,2-polybutadiene using the Langmuir-Blodgett technique. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:11889-11898. [PMID: 21863826 DOI: 10.1021/la201534e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The essence of this study is to apply the Langmuir-Blodgett (LB) technique for assembling asymmetric membranes. Accordingly, Langmuir films of a (further) polymerizable polymer, 1,2-polybutadiene (1,2-pbd), were studied and transferred onto different solid supports, such as gold, indium tin oxide (ITO), and silicon. The layers were characterized both at the air/water interface as well as on different substrates using numerous methods including cyclic voltammetry, impedance spectroscopy, spectroscopic ellipsometry, atomic force microscopy, X-ray photoelectron spectroscopy, and reflection-absorption Fourier transform infrared spectroscopy. The Langmuir films were stable at the air-water interface as long as they were not exposed to UV irradiation. The LB films formed disorganized layers, which gradually blocked the permeation of different species with increasing the number of deposited layers. The thickness was ca. 4-7 Å per layer. Irradiating the Langmuir films caused their cross-linking at the air-water interface. Furthermore, we took advantage of the reactivity of the double bond of the LB films on the solid supports and graft polymerized acrylic acid on top of the 1,2-pbd layers. This approach is the basis of the formation of an asymmetric membrane that requires different porosity on both of its sides.
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Affiliation(s)
- Maria Hitrik
- Institute of Chemistry, the Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Fink L, Mandler D. Thin functionalized films on cylindrical microelectrodes for electrochemical determination of Hg(II). J Electroanal Chem (Lausanne) 2010. [DOI: 10.1016/j.jelechem.2010.02.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mandler D. Formation, Characterization, and Applications of Organic and Inorganic Nanometric Films. Isr J Chem 2010. [DOI: 10.1002/ijch.201000028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bonné MJ, Galbraith E, James TD, Wasbrough MJ, Edler KJ, Jenkins ATA, Helton M, McKee A, Thielemans W, Psillakis E, Marken F. Boronic aciddendrimerreceptor modified nanofibrillar cellulose membranes. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b918308f] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Son YJ, McConville JT. Development of a standardized dissolution test method for inhaled pharmaceutical formulations. Int J Pharm 2009; 382:15-22. [PMID: 19665533 DOI: 10.1016/j.ijpharm.2009.07.034] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2009] [Revised: 07/26/2009] [Accepted: 07/28/2009] [Indexed: 11/15/2022]
Abstract
The aim of this research was to investigate a potential standardized test method to characterize the dissolution properties of formulations intended for pulmonary delivery. A commercially available dissolution tester was adapted to be used as a testing apparatus by incorporation of a membrane containing cassette. The cassette was designed to enclose previously air-classified formulations, so that they could be uniformly tested in the dissolution apparatus. The influence of particle size, amount of drug loading, and the composition of a simulated lung fluid (SLF) dissolution media on the dissolution rate were studied. Dissolution rate was significantly affected by the uniformity of drug loading, and particle size. Diffusion coefficients, estimated using the Higuchi model, showed an increase from 2.28 to 9.60x10(-7) cm(2)/h as the particle size decreased. Addition of DPPC (0.02%, w/v) to the SLF dissolution media resulted also resulted in an increase in the diffusion coefficient value. This study demonstrated that the developed method was reproducible and may be used to evaluate the dissolution properties of pharmaceutical inhalation products following their aerodynamic particle classification.
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Affiliation(s)
- Yoen-Ju Son
- College of Pharmacy, The University of Texas at Austin, Austin, TX 78712-0231, USA
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