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Iqbal S, Rafique MS, Iqbal N, Bashir S, Malarvili M, Anjum AA. Development of Versatile, thermally stable, flexible, UV-resistant and antibacterial polyvinyl alcohol-Nanodiamonds composite for efficient food packaging. Heliyon 2024; 10:e33270. [PMID: 39021982 PMCID: PMC11252966 DOI: 10.1016/j.heliyon.2024.e33270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 06/15/2024] [Accepted: 06/18/2024] [Indexed: 07/20/2024] Open
Abstract
This research paper reports an enhancement of thermal, optical, mechanical and antibacterial activities of the Polyvinyl alcohol-Nanodiamonds (PVA-NDs) composite required for the food packaging industry. The synthesis of composites was done by the wet processing method. The large surface area of NDs facilitated the robust interaction between the hydroxyl group and macromolecular chains of PVA to enhance the hydrogen bonding of PVA with NDs rather than PVA molecules. Thus, a reduction in PVA diffraction peak intensity was reported. NDs improved the thermal stability by preventing the out-diffusion of volatile decomposition products of PVA. The results also revealed an enhancement in tensile strength (∼60 MPa) and ductility (∼180 %). PVA-NDs composite efficiently blocked the UVC (100 %), most of the part of the UVB (∼85 % above 300 nm), and UVA (∼58 %). Furthermore, enhanced antibacterial activities were reported for PVA-NDs composite against E. coli and S. aureus. NDs accumulated around the bacterial cells prevented essential cellular functions and led to death. Hence, this composite could be a promising candidate for safe, thermally stable, strong, flexible, transparent, UV- resistant antibacterial food packaging material.
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Affiliation(s)
- Saman Iqbal
- Department of Physics, University of the Punjab, Lahore, Pakistan
| | | | - Nida Iqbal
- Biomedical Engineering Centre, University of Engineering and Technology, Lahore, Kala Shah Kaku (K.S.K.) Campus, Pakistan
| | - Shazia Bashir
- Department of Physics, Government College University, Lahore, Pakistan
| | - M.B. Malarvili
- Department of Biomedical and Health Science Engineering, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Skudai, Johor Darul Takzim, Malaysia
| | - Aftab Ahmad Anjum
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore, Pakistan
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2
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Valle L, Maddalena L, Damonte G, Carosio F, Pellis A, Monticelli O. Biodegradable and gas barrier polylactic acid/star-shaped polycaprolactone blend films functionalized with a bio-sourced polyelectrolyte coating. Colloids Surf B Biointerfaces 2024; 236:113806. [PMID: 38394857 DOI: 10.1016/j.colsurfb.2024.113806] [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: 11/23/2023] [Revised: 02/15/2024] [Accepted: 02/18/2024] [Indexed: 02/25/2024]
Abstract
This work aims at improving and disclosing new properties of films based on polylactic acid (PLA) and a star-shaped polycaprolactone (PCL). Indeed, previous works demonstrated that the presence of ad-hoc synthesized PCL, characterized by low molecular weight and carboxyl end groups (coded as PCL-COOH), improves the elongation at break of the films compared to that of neat PLA and increases their functionality. To further improve the properties of the system, alternating layers of chitosan (CH) and DNA were deposited on the surface applying a Layer-by-Layer (LbL) technique. This method was chosen because it allows the properties of the system to be modified without affecting the specific features of the bulk. In addition, the LbL technique is easily scalable and environmentally friendly because it is based on the use of an aqueous solution of two biomaterials, namely DNA and CH, which are not only derived from renewable sources but are also biocompatible and biodegradable. IR measurements on model silicon substrates subjected to the same treatment as the films, pointed out a linear growth of the proposed LbL assembly. Indeed, FE-SEM measurements highlighted the deposition of a uniform coating. The presence of the CH/DNA assembly reduced the oxygen permeability under both dry and humid (50% R.H.) conditions when compared to the uncoated film. In addition, the coating had no relevant effect on the hydrolytic and enzymatic degradation of the system, so that the biodegradability of the film was maintained.
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Affiliation(s)
- Luca Valle
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Via Dodecaneso, 31, Genova 16146, Italy
| | - Lorenza Maddalena
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino-sede di Alessandria, viale Teresa Michel, 5, Alessandria 15121, Italy
| | - Giacomo Damonte
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Via Dodecaneso, 31, Genova 16146, Italy
| | - Federico Carosio
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino-sede di Alessandria, viale Teresa Michel, 5, Alessandria 15121, Italy
| | - Alessandro Pellis
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Via Dodecaneso, 31, Genova 16146, Italy
| | - Orietta Monticelli
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Via Dodecaneso, 31, Genova 16146, Italy.
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3
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Kaczmarek-Szczepańska B, Zasada L, Wekwejt M, Brzezinska MS, Michno A, Ronowska A, Ciesielska M, Kovtun G, Cuberes MT. PVA-Based Films with Strontium Titanate Nanoparticles Dedicated to Wound Dressing Application. Polymers (Basel) 2024; 16:484. [PMID: 38399862 PMCID: PMC10893095 DOI: 10.3390/polym16040484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/30/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Bioactive materials may be applied in tissue regeneration, and an example of such materials are wound dressings, which are used to accelerate skin healing, especially after trauma. Here, we proposed a novel dressing enriched by a bioactive component. The aim of our study was to prepare and characterize poly(vinyl alcohol) films modified with strontium titanate nanoparticles. The physicochemical properties of films were studied, such as surface free energy and surface roughness, as well as the mechanical properties of materials. Moreover, different biological studies were carried out, like in vitro hemo- and cyto-compatibility, biocidal activity, and anti-biofilm formation. Also, the degradation of the materials' utilization possibilities and enzymatic activity in compost were checked. The decrease of surface free energy, increase of roughness, and improvement of mechanical strength were found after the addition of nanoparticles. All developed films were cyto-compatible, and did not induce a hemolytic effect on the human erythrocytes. The PVA films containing the highest concentration of STO (20%) reduced the proliferation of Eschericha coli, Pseudomonas aeruginosa, and Staphylococcus aureus significantly. Also, all films were characterized by surface anti-biofilm activity, as they significantly lowered the bacterial biofilm abundance and its dehydrogenase activity. The films were degraded by the compost microorganism. However, PVA with the addition of 20%STO was more difficult to degrade. Based on our results, for wound dressing application, we suggest using bioactive films based on PVA + 20%STO, as they were characterized by high antibacterial properties, favorable physicochemical characteristics, and good biocompatibility with human cells.
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Affiliation(s)
- Beata Kaczmarek-Szczepańska
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100 Toruń, Poland; (L.Z.); (M.C.)
| | - Lidia Zasada
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100 Toruń, Poland; (L.Z.); (M.C.)
| | - Marcin Wekwejt
- Department of Biomaterials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, 80-233 Gdańsk, Poland;
| | - Maria Swiontek Brzezinska
- Department of Environmental Microbiology and Biotechnology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Torun, Lwowska 1, 87-100 Torun, Poland;
| | - Anna Michno
- Department of Molecular Medicine, Medical University of Gdańsk, 80-210 Gdańsk, Poland; (A.M.); (A.R.)
| | - Anna Ronowska
- Department of Molecular Medicine, Medical University of Gdańsk, 80-210 Gdańsk, Poland; (A.M.); (A.R.)
| | - Magdalena Ciesielska
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100 Toruń, Poland; (L.Z.); (M.C.)
| | - Ganna Kovtun
- Institute of Magnetism NAS of Ukraine and MES of Ukraine, Blvd. Acad. Vernadsky 36-b, 03142 Kyiv, Ukraine;
- Department of Applied Mechanics and Project Engineering, Mining and Industrial Engineering School of Almaden, University of Castilla-La Mancha, Plaza Manuel Meca 1, 13400 Almadén, Spain;
| | - M. Teresa Cuberes
- Department of Applied Mechanics and Project Engineering, Mining and Industrial Engineering School of Almaden, University of Castilla-La Mancha, Plaza Manuel Meca 1, 13400 Almadén, Spain;
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4
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Yang J, Sun J, Wang R, Liu F, Wang J, Qu Y, Wang P, Huang H, Liu L, Zhao Z. Laponite-polymer composite as a rheology modifier and filtration loss reducer for water-based drilling fluids at high temperature. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130261] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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5
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Sakhadeo NN, Patro TU. Exploring the Multifunctional Applications of Surface-Coated Polymeric Foams─A Review. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04945] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Nihar N. Sakhadeo
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Girinagar, Pune, Maharashtra 411025, India
| | - T. Umasankar Patro
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Girinagar, Pune, Maharashtra 411025, India
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6
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Li L, Chen K, Zhang J. Superelastic Clay/Silicone Composite Sponges and Their Applications for Oil/Water Separation and Solar Interfacial Evaporation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:1853-1859. [PMID: 35084867 DOI: 10.1021/acs.langmuir.1c03043] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
3D porous materials are of great interest in many areas of study, but it is still difficult to prepare those with high elasticity and low thermal conductivity via facile methods. Here, superelastic laponite/silicone (LS) composite sponges with low thermal conductivity are prepared via a simple approach. The LS sponges were analyzed by various characterization methods. The content of laponite nanosheets in LS sponges has a great influence on the microstructure, comprehensive mechanical properties, and thermal conductivity. LS sponges feature (i) high mechanical strength, compressibility, and elasticity, (ii) excellent superhydrophobicity/superoleophilicity, and (iii) low thermal conductivity. Consequently, LS sponges could be used for water purification, for example, oil/water separation and solar-driven interfacial evaporation in combination with carbon nanotubes (CNTs). The LS/CNTs solar evaporator has a remarkable evaporation rate of 1.77 kg m-2 h-1 for the 3.5 wt % NaCl aqueous solution under 1 kW m-2 irradiation and high salt resistance. We foresee that this study will promote the development of new 3D porous materials and their applications.
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Affiliation(s)
- Lingxiao Li
- Center of Eco-material and Green Chemistry, and Key Laboratory of Clay Mineral Applied Research of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, 730000 Lanzhou, P.R. China
| | - Kai Chen
- Center of Eco-material and Green Chemistry, and Key Laboratory of Clay Mineral Applied Research of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, 730000 Lanzhou, P.R. China
| | - Junping Zhang
- Center of Eco-material and Green Chemistry, and Key Laboratory of Clay Mineral Applied Research of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, 730000 Lanzhou, P.R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P.R. China
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7
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Liu J, Chavez SE, Ding H, Farooqui MM, Hou Z, Lin S, D'Auria TD, Kennedy JM, LaChance AM, Sun L. Ultra-transparent nanostructured coatings via flow-induced one-step coassembly. NANO MATERIALS SCIENCE 2021. [DOI: 10.1016/j.nanoms.2021.07.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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8
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Cho BG, Joshi SR, Lee S, Kim SK, Park YB, Kim GH. Enhanced Mechanical and Antibacterial Properties of Nanocomposites Based on Poly(vinyl Alcohol) and Biopolymer-Derived Reduced Graphene Oxide. Polymers (Basel) 2021; 13:polym13040615. [PMID: 33670700 PMCID: PMC7923123 DOI: 10.3390/polym13040615] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 02/16/2021] [Accepted: 02/16/2021] [Indexed: 11/29/2022] Open
Abstract
Functionalized graphene–polymer nanocomposites have gained significant attention for their enhanced mechanical, thermal, and antibacterial properties, but the requirement of multi-step processes or hazardous reducing agents to functionalize graphene limits their current applications. Here, we present a single-step synthesis of thermally reduced graphene oxide (TrGO) based on shellac, which is a low-cost biopolymer that can be employed to produce poly(vinyl alcohol) (PVA)/TrGO nanocomposites (PVA–TrGO). The concentration of TrGO varied from 0.1 to 2.0 wt.%, and the critical concentration of homogeneous TrGO dispersion was observed to be 1.5 wt.%, below which strong interfacial molecular interactions between the TrGO and the PVA matrix resulted in improved thermal and mechanical properties. At 1.5 wt.% filler loading, the tensile strength and modulus of the PVA–TrGO nanocomposite were increased by 98.7% and 97.4%, respectively, while the storage modulus was increased by 69%. Furthermore, the nanocomposite was 96% more effective in preventing bacterial colonization relative to the neat PVA matrix. The present findings indicate that TrGO can be considered a promising material for potential applications in biomedical devices.
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Affiliation(s)
| | | | | | | | - Young-Bin Park
- Correspondence: (Y.-B.P.); (G.-H.K.); Tel.: +82-52-217-2314 (Y-B.P.); +82-52-217-2413 (G.-H.K.)
| | - Gun-Ho Kim
- Correspondence: (Y.-B.P.); (G.-H.K.); Tel.: +82-52-217-2314 (Y-B.P.); +82-52-217-2413 (G.-H.K.)
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9
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Merindol R, Diabang S, Mujica R, Le Houerou V, Roland T, Gauthier C, Decher G, Felix O. Assembly of Anisotropic Nanocellulose Films Stronger than the Original Tree. ACS NANO 2020; 14:16525-16534. [PMID: 32790330 DOI: 10.1021/acsnano.0c01372] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Natural structural materials frequently consist of multimaterial nanocomposites with complex superstructure giving rise to exceptional mechanical properties, but also commonly preventing access to their synthetic reproduction. Here we present the spin-assisted layer-by-layer assembly of anisotropic wood-inspired films composed of anionic cellulose nanofibrils and cationic poly(vinyl amine) possessing a tensile strength that exceeds that of the wood from which the fibers originate. The degree of orientation of the nanofibrils was studied by atomic force microscopy and depends strongly on the distance from the center of the spun surface. The nanofibrils are preferentially aligned in the direction of the shear flow, and consequently, the mechanical properties of such films differ substantially when measured parallel and perpendicular to the fibril orientation direction. For enabling a diversity of bioinspired applications including sensing, packaging, electronics, or optics, the preparation of nanocomposite materials and devices with anisotropic physical properties requires an extreme level of control over the positioning and alignment of nanoscale objects within the matrix material.
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Affiliation(s)
- Rémi Merindol
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, F-67000 Strasbourg, France
| | - Seydina Diabang
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, F-67000 Strasbourg, France
| | - Randy Mujica
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, F-67000 Strasbourg, France
| | - Vincent Le Houerou
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, F-67000 Strasbourg, France
| | - Thierry Roland
- Université de Strasbourg, CNRS, INSA de Strasbourg, Institut Charles Sadron UPR22, F-67000 Strasbourg, France
| | - Christian Gauthier
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, F-67000 Strasbourg, France
| | - Gero Decher
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, F-67000 Strasbourg, France
- International Center for Frontier Research in Chemistry, F-67083 Strasbourg, France
- International Center for Materials Nanoarchitectonics, Tsukuba, Ibaraki 305-0044, Japan
| | - Olivier Felix
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, F-67000 Strasbourg, France
- International Center for Materials Nanoarchitectonics, Tsukuba, Ibaraki 305-0044, Japan
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10
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Abu-Thabit N, Hakeem AS, Mezghani K, Ratemi E, Elzagheid M, Umar Y, Primartomo A, Al Batty S, Azad AK, Al Anazi S, Ahmad A. Preparation of pH-Indicative and Flame-Retardant Nanocomposite Films for Smart Packaging Applications. SENSORS 2020; 20:s20195462. [PMID: 32977576 PMCID: PMC7582257 DOI: 10.3390/s20195462] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/19/2020] [Accepted: 09/21/2020] [Indexed: 11/16/2022]
Abstract
There is an increasing demand for sustainable and safe packaging technologies to improve consumer satisfaction, reduce food loss during storage and transportation, and track the quality status of food throughout its distribution. This study reports the fabrication of colorimetric pH-indicative and flame-retardant nanocomposite films (NCFs) based on polyvinyl alcohol (PVA) and nanoclays for smart and safe food packaging applications. Tough, flexible, and transparent NCFs were obtained using 15% nanoclay loading (PVA-15) with superior properties, including low solubility/swelling in water and high thermal stability with flame-retardant behavior. The NCFs showed average mechanical properties that are comparable to commercial films for packaging applications. The color parameters were recorded at different pH values and the prepared NCFs showed distinctive colorimetric pH-responsive behavior during the transition from acidic to alkaline medium with high values for the calculated color difference (∆E ≈ 50). The prepared NCFs provided an effective way to detect the spoilage of the shrimp samples via monitoring the color change of the NCFs during the storage period. The current study proposes the prepared NCFs as renewable candidates for smart food packaging featuring colorimetric pH-sensing for monitoring food freshness as well as a safer alternative choice for applications that demand films with fire-retardant properties.
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Affiliation(s)
- Nedal Abu-Thabit
- Department of Chemical and Process Engineering Technology, Jubail Industrial College, Jubail Industrial City 31961, Saudi Arabia; (E.R.); (M.E.); (Y.U.); (S.A.B.); (A.K.A.); (S.A.A.); (A.A.)
- Correspondence: ; Tel.: +966-13-340-5400
| | - Abbas Saeed Hakeem
- Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia;
| | - Khaled Mezghani
- Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;
| | - Elaref Ratemi
- Department of Chemical and Process Engineering Technology, Jubail Industrial College, Jubail Industrial City 31961, Saudi Arabia; (E.R.); (M.E.); (Y.U.); (S.A.B.); (A.K.A.); (S.A.A.); (A.A.)
| | - Mohamed Elzagheid
- Department of Chemical and Process Engineering Technology, Jubail Industrial College, Jubail Industrial City 31961, Saudi Arabia; (E.R.); (M.E.); (Y.U.); (S.A.B.); (A.K.A.); (S.A.A.); (A.A.)
| | - Yunusa Umar
- Department of Chemical and Process Engineering Technology, Jubail Industrial College, Jubail Industrial City 31961, Saudi Arabia; (E.R.); (M.E.); (Y.U.); (S.A.B.); (A.K.A.); (S.A.A.); (A.A.)
| | - Adhi Primartomo
- Department of Mechanical and Manufacturing Engineering Technology, Jubail Industrial College, Jubail Industrial City 31961, Saudi Arabia;
| | - Sirhan Al Batty
- Department of Chemical and Process Engineering Technology, Jubail Industrial College, Jubail Industrial City 31961, Saudi Arabia; (E.R.); (M.E.); (Y.U.); (S.A.B.); (A.K.A.); (S.A.A.); (A.A.)
| | - Abdul Kalam Azad
- Department of Chemical and Process Engineering Technology, Jubail Industrial College, Jubail Industrial City 31961, Saudi Arabia; (E.R.); (M.E.); (Y.U.); (S.A.B.); (A.K.A.); (S.A.A.); (A.A.)
| | - Sami Al Anazi
- Department of Chemical and Process Engineering Technology, Jubail Industrial College, Jubail Industrial City 31961, Saudi Arabia; (E.R.); (M.E.); (Y.U.); (S.A.B.); (A.K.A.); (S.A.A.); (A.A.)
| | - Ayman Ahmad
- Department of Chemical and Process Engineering Technology, Jubail Industrial College, Jubail Industrial City 31961, Saudi Arabia; (E.R.); (M.E.); (Y.U.); (S.A.B.); (A.K.A.); (S.A.A.); (A.A.)
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11
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Lipton J, Weng GM, Alhabeb M, Maleski K, Antonio F, Kong J, Gogotsi Y, Taylor AD. Mechanically strong and electrically conductive multilayer MXene nanocomposites. NANOSCALE 2019; 11:20295-20300. [PMID: 31633712 DOI: 10.1039/c9nr06015d] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Polymer nanocomposites offer the opportunity to bridge properties of nanomaterials to the macroscale. In this work, layer-by-layer (LbL) assembly is used to demonstrate nanocomposites of 2D titanium carbide nanosheets (MXene) and clay nanoplatelets (montmorillonite) to fabricate freestanding thin films with unique multifunctional properties. These thin films can be tuned by adjusting the thickness to exhibit a tensile strength of 138 MPa-225 MPa, EMI specific shielding effectiveness normalized to thickness and density up to 24 550 dB cm2 g-1, and sheet resistance from 855 Ω sq-1-3.27 kΩ sq-1 (corresponding to a range of conductivity from 53 S m-1 to 125 S m-1). This composite is the strongest MXene-based LbL film prepared to date, in part due to the nacre-like brick-and-mortar structure. Ultra-strong, multifunctional films of this nature are desirable for many applications ranging from membranes, to structural and multifunctional composites, energy harvesting and storage, and materials for aerospace.
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Affiliation(s)
- Jason Lipton
- Department of Chemical and Biomolecular Engineering, New York University, Brooklyn, New York 11201, USA. and Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, USA
| | - Guo-Ming Weng
- Department of Chemical and Biomolecular Engineering, New York University, Brooklyn, New York 11201, USA.
| | - Mohamed Alhabeb
- Department of Materials Science and Engineering and A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, Pennsylvania 19104, USA
| | - Kathleen Maleski
- Department of Materials Science and Engineering and A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, Pennsylvania 19104, USA
| | - Francisco Antonio
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, USA
| | - Jaemin Kong
- Department of Chemical and Biomolecular Engineering, New York University, Brooklyn, New York 11201, USA.
| | - Yury Gogotsi
- Department of Materials Science and Engineering and A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, Pennsylvania 19104, USA
| | - Andre D Taylor
- Department of Chemical and Biomolecular Engineering, New York University, Brooklyn, New York 11201, USA.
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12
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Mignon A, Pezzoli D, Prouvé E, Lévesque L, Arslan A, Pien N, Schaubroeck D, Van Hoorick J, Mantovani D, Van Vlierberghe S, Dubruel P. Combined effect of Laponite and polymer molecular weight on the cell-interactive properties of synthetic PEO-based hydrogels. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2018.12.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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13
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Ben Dhieb F, Dil EJ, Tabatabaei SH, Mighri F, Ajji A. Effect of nanoclay orientation on oxygen barrier properties of LbL nanocomposite coated films. RSC Adv 2019; 9:1632-1641. [PMID: 35518029 PMCID: PMC9059654 DOI: 10.1039/c8ra09522a] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 07/23/2019] [Accepted: 01/08/2019] [Indexed: 01/07/2023] Open
Abstract
Quantify clay orientation in a layer by layer deposited films. Demonstrate the importance of interfacial region in a high clay loading nanocomposite film, in decreasing permeability.
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Affiliation(s)
- Fatma Ben Dhieb
- 3SPack NSERC-Industry Chair
- CREPEC
- Chemical Engineering Department
- Polytechnique Montreal
- Montreal
| | - Ebrahim Jalali Dil
- 3SPack NSERC-Industry Chair
- CREPEC
- Chemical Engineering Department
- Polytechnique Montreal
- Montreal
| | | | - Frej Mighri
- CREPEC
- Chemical Engineering Department
- Laval University
- Quebec
- Canada
| | - Abdellah Ajji
- 3SPack NSERC-Industry Chair
- CREPEC
- Chemical Engineering Department
- Polytechnique Montreal
- Montreal
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14
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Laponite-graphene oxide hybrid particulate filler enhances mechanical properties of cross-linked epoxy. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1461-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Batool S, Gill R, Arshad M, Siddiqi HM, Qureshi SS. Layer-by-layer fabrication of nacre inspired epoxy/MMT multilayered composites. J Appl Polym Sci 2017. [DOI: 10.1002/app.46079] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Sadia Batool
- Department of Environmental Sciences; Fatima Jinnah Women University; Rawalpindi 46000 Pakistan
| | - Rohama Gill
- Department of Environmental Sciences; Fatima Jinnah Women University; Rawalpindi 46000 Pakistan
| | - Muhammad Arshad
- Nanoscience and Technology Department; National Centre for Physics, Quaid-i-Azam University Campus; Islamabad 44000 Pakistan
| | | | - Shahid Saeed Qureshi
- Department of Chemistry; Government Post Graduate College (GPGC); Jhelum 49600 Pakistan
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16
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Buhl M, Staniford M, Lamping S, Körsgen M, Arlinghaus HF, Kynast U, Ravoo BJ. Patterning of Nanoclays on Positively Charged Self-Assembled Monolayers via Micromolding in Capillaries. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8799-8804. [PMID: 28351148 DOI: 10.1021/acs.langmuir.6b04618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nanoclays are nanomaterials with versatile adsorptive properties. This contribution describes the generation of micropatterns of a nanoclay ("laponite") on ammonium-terminated, self-assembled monolayers (SAMs) on glass and silicon. Microstructured immobilization of the laponite was performed using micromolding in capillaries (MIMIC). The immobilization was verified using contact angle goniometry, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), scanning electron microscopy (SEM), time-of-flight secondary ion mass spectrometry (ToF-SIMS), and fluorescence microscopy. Furthermore, laponite was modified with Nile red to generate a fluorescence enhancement-based surface sensor for the vitamin choline.
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Affiliation(s)
- Moritz Buhl
- Organic Chemistry Institute and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster , Corrensstrasse 40, 48149 Münster, Germany
| | - Mark Staniford
- Institute for Optical Technologies, Münster University of Applied Sciences , Stegerwaldsstrasse 39, 48565 Steinfurt, Germany
| | - Sebastian Lamping
- Organic Chemistry Institute and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster , Corrensstrasse 40, 48149 Münster, Germany
| | - Martin Körsgen
- Physics Institute, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Heinrich F Arlinghaus
- Physics Institute, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Ulrich Kynast
- Institute for Optical Technologies, Münster University of Applied Sciences , Stegerwaldsstrasse 39, 48565 Steinfurt, Germany
| | - Bart Jan Ravoo
- Organic Chemistry Institute and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster , Corrensstrasse 40, 48149 Münster, Germany
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17
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Patro TU, Wagner HD. Influence of graphene oxide incorporation and chemical cross-linking on structure and mechanical properties of layer-by-layer assembled poly(Vinyl alcohol)-Laponite free-standing films. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/polb.24226] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- T. Umasankar Patro
- Department of Materials Engineering; Defence Institute of Advanced Technology (DU), Girinagar; Pune Maharashtra 411025 India
| | - H. Daniel Wagner
- Department of Materials and Interfaces; Weizmann Institute of Science; Rehovot 76100 Israel
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18
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Zhou Y, Liu J, Xiao M, Meng Y, Sun L. Designing Supported Ionic Liquids (ILs) within Inorganic Nanosheets for CO₂ Capture Applications. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5547-5555. [PMID: 26840623 DOI: 10.1021/acsami.5b11249] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A new methodology was developed for the immobilization of ionic liquids (ILs) on α-zirconium phosphate (ZrP) and montmorillonite (MMT) single-layer nanosheets via a facile coassembly process. The coassembled inorganic nanosheet/1-n-butyl-3-methylimidazolium chloride (BMIMCl) hybrids were systematically characterized. The results showed that the ILs were successfully assembled with ZrP or MMT single-layer nanosheets to form an intercalated structure. The inorganic nanosheet/IL hybrids can serve as efficient CO2 absorbents. The CO2 sorption of BMIMCl could be made up to 21 times more efficient because of the high exposure of the functional groups of BMIMCl in the coassembled hybrids. CO2 was physically absorbed by the hybrids with a slow equilibrium time at lower temperatures, whereas higher temperatures allowed for faster diffusion and chemical absorption of CO2. The best CO2 capture capacities of the hybrids were 0.73 mmol/g at 60 °C for ZrP/BMIMCl and 0.42 mmol/g at 70 °C for MMT/BMIMCl.
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Affiliation(s)
- Yingjie Zhou
- School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology , 219 Ningliu Road, Nanjing, Jiangsu 210044, China
- Department of Chemical & Biomolecular Engineering and Polymer Program, Institute of Materials Science, University of Connecticut , Storrs, Connecticut 06269, United States
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University , Guangzhou 510275, China
| | - Jingjing Liu
- Department of Chemical & Biomolecular Engineering and Polymer Program, Institute of Materials Science, University of Connecticut , Storrs, Connecticut 06269, United States
| | - Min Xiao
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University , Guangzhou 510275, China
| | - Yuezhong Meng
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University , Guangzhou 510275, China
| | - Luyi Sun
- Department of Chemical & Biomolecular Engineering and Polymer Program, Institute of Materials Science, University of Connecticut , Storrs, Connecticut 06269, United States
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19
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Yang Y, Duan H, Wang X, Liu Y, Yang J. Preparation and characterization of poly (phenylene sulfide) nanocomposites with both silica and clay fillers. HIGH PERFORM POLYM 2015. [DOI: 10.1177/0954008314566435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Poly (phenylene sulfide) (PPS)/silica (SiO2)/organophilic montmorillonite OMMT(clay) nanocomposites are prepared and two kinds of nanofillers of different dimensions, the plate-like OMMT(clay) and globe-like SiO2, are dispersed through their “filler–filler” interaction in melt processing. In PPS/SiO2/clay system, strong filler–filler interaction is established by different responses to shear flow of inorganic clay and SiO2, thus the well dispersion of nanofillers is achieved successfully. However, the OMMT platelets are prone to be entangled by PPS molecular chains in PPS/SiO2/OMMT composites due to the extremely low interfacial tension between PPS and OMMT, which blocks the interaction between OMMT and SiO2. The result reveals two key points in realizing well dispersion of nanofillers in polymer by establishing filler–filler interaction in processing, namely, the distinct responses to shear flow of nanofillers provide an important condition for filler–filler interaction, while the direct collision between each other is another key point to successfully realize this interaction.
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Affiliation(s)
- Yaqi Yang
- College of Material science & Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Hongji Duan
- College of Material science & Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Xiaojun Wang
- Institute of Materials Science & Technology, Analytical & Testing Center, Sichuan University, Chengdu, People’s Republic of China
| | - Yaqing Liu
- College of Material science & Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Jie Yang
- Institute of Materials Science & Technology, Analytical & Testing Center, Sichuan University, Chengdu, People’s Republic of China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, People’s Republic of China
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20
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Merindol R, Diabang S, Felix O, Roland T, Gauthier C, Decher G. Bio-inspired multiproperty materials: strong, self-healing, and transparent artificial wood nanostructures. ACS NANO 2015; 9:1127-36. [PMID: 25590696 DOI: 10.1021/nn504334u] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Nanocomposite films possessing multiple interesting properties (mechanical strength, optical transparency, self-healing, and partial biodegradability) are discussed. We used Layer-by-Layer assembly to prepare micron thick wood-inspired films from anionic nanofibrillated cellulose and cationic poly(vinyl amine). The film growth was carried out at different pH values to obtain films of different chemical composition, whereby, and as expected, higher pH values led to a higher polycation content and also to 6 times higher film growth increments (from 9 to 55 nm per layer pair). In the pH range from 8 to 11, micron thick and optically transparent LbL films are obtained by automated dipping when dried regularly in a stream of air. Films with a size of 10 cm(2) or more can be peeled from flat surfaces; they show tensile strengths up to about 250 MPa and Young's moduli up to about 18 GPa as controlled by the polycation/polyanion ratio of the film. Experiments at different humidities revealed the plasticizing effect of water in the films and allowed reversible switching of their mechanical properties. Whereas dry films are strong and brittle (Young's modulus: 16 GPa, strain at break: 1.7%), wet films are soft and ductile (Young's modulus: 0.1 GPa, strain at break: 49%). Wet film surfaces even amalgamate upon contact to yield mechanically stable junctions. We attribute the switchability of the mechanical properties and the propensity for self-repair to changes in the polycation mobility that are brought about by the plastifying effect of water.
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Affiliation(s)
- Rémi Merindol
- CNRS - Institut Charles Sadron (UPR22) , 23 rue du Loess, F-67034 Strasbourg, France
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21
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Ren W, Wu R, Guo P, Zhu J, Li H, Xu S, Wang J. Preparation and characterization of covalently bonded PVA/Laponite/HAPI nanocomposite multilayer freestanding films by layer-by-layer assembly. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23666] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Wenchen Ren
- Key Laboratory of Oil and Gas Fine Chemicals; Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University; 666th Shengli Road Urumqi Xinjiang 830046 China
| | - Ronglan Wu
- Key Laboratory of Oil and Gas Fine Chemicals; Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University; 666th Shengli Road Urumqi Xinjiang 830046 China
| | - Pingping Guo
- Key Laboratory of Oil and Gas Fine Chemicals; Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University; 666th Shengli Road Urumqi Xinjiang 830046 China
| | - Jinlong Zhu
- Key Laboratory of Oil and Gas Fine Chemicals; Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University; 666th Shengli Road Urumqi Xinjiang 830046 China
| | - Huili Li
- Key Laboratory of Oil and Gas Fine Chemicals; Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University; 666th Shengli Road Urumqi Xinjiang 830046 China
| | - Shimei Xu
- Key Laboratory of Oil and Gas Fine Chemicals; Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University; 666th Shengli Road Urumqi Xinjiang 830046 China
| | - Jide Wang
- Key Laboratory of Oil and Gas Fine Chemicals; Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University; 666th Shengli Road Urumqi Xinjiang 830046 China
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22
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Zhou S, Wang M, Yang J, Xu F. Structure and mechanical properties of transparent layered nanocomposites from LAPONITE®-hydroxyethyl cellulose vacuum-assisted self-assembly. RSC Adv 2015. [DOI: 10.1039/c5ra00475f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A nacre-like layered structure appeared at a LRD content between 40 wt% and 70 wt%, and the effect of the LRD content on the LRD/HEC nanocomposite’s properties was investigated.
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Affiliation(s)
- Sukun Zhou
- MOE Key Laboratory of Wooden Material Science and Application
- Beijing Forestry University
- Beijing
- China
| | - Meng Wang
- MOE Key Laboratory of Wooden Material Science and Application
- Beijing Forestry University
- Beijing
- China
| | - Jun Yang
- MOE Key Laboratory of Wooden Material Science and Application
- Beijing Forestry University
- Beijing
- China
| | - Feng Xu
- MOE Key Laboratory of Wooden Material Science and Application
- Beijing Forestry University
- Beijing
- China
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23
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Abstract
Different types of cationic clay minerals and their applications in various biological systems.
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Affiliation(s)
- M. Ghadiri
- University of Sydney
- Faculty of Pharmacy
- Sydney
- Australia
| | - W. Chrzanowski
- University of Sydney
- Faculty of Pharmacy
- Sydney
- Australia
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Centre for Regenerative Medicine
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24
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Uysal Unalan I, Cerri G, Marcuzzo E, Cozzolino CA, Farris S. Nanocomposite films and coatings using inorganic nanobuilding blocks (NBB): current applications and future opportunities in the food packaging sector. RSC Adv 2014. [DOI: 10.1039/c4ra01778a] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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25
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26
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Tritschler U, Zlotnikov I, Zaslansky P, Aichmayer B, Fratzl P, Schlaad H, Cölfen H. Hierarchical structuring of liquid crystal polymer-Laponite hybrid materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:11093-11101. [PMID: 23790152 DOI: 10.1021/la4007845] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Biomimetic organic-inorganic composite materials were fabricated via one-step self-organization on three hierarchical levels. The organic component was a polyoxazoline with pendent cholesteryl and carboxyl (N-Boc-protected amino acid) side chains that was able to form a chiral nematic lyotropic phase and bind to positively charged inorganic faces of Laponite. The Laponite particles formed a mesocrystalline arrangement within the liquid-crystal (LC) polymer phase upon shearing a viscous dispersion of Laponite nanoparticles and LC polymer in DMF. Complementary analytical and mechanical characterization techniques (AUC, POM, TEM, SEM, SAXS, μCT, and nanoindentation) covering the millimeter, micrometer, and nanometer length scales reveal the hierarchical structures and properties of the composite materials consisting of different ratios of Laponite nanoparticles and liquid-crystalline polymer.
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Affiliation(s)
- Ulrich Tritschler
- Physical Chemistry, University of Konstanz, Universitätsstrasse 10, D-78457 Konstanz, Germany
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27
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Wang J, Cheng Q, Lin L, Chen L, Jiang L. Understanding the relationship of performance with nanofiller content in the biomimetic layered nanocomposites. NANOSCALE 2013; 5:6356-6362. [PMID: 23673418 DOI: 10.1039/c3nr00801k] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Montmorillonite/poly(vinyl alcohol) (MMT/PVA) nanocomposites spanning the complete range of MMT content (0-100 wt%) are prepared by simple evaporation-induced assembly. Effects of MMT content on the structure and mechanical properties of nanocomposites are systematically investigated and exhibit two important transitions at MMT contents of 30 wt% and 70 wt%. In the range of 0-30 wt%, the nanocomposites show a random structure. With the content of PVA increasing, the mechanical properties of the resultant nanocomposites were dramatically enhanced and were higher than that by prediction according to the conventional composite model. In the range of 30-70 wt%, the nanocomposites show a nacre-like layered structure with alternating MMT platelets and PVA layers, and all PVA is completely restricted by MMT platelets. The mechanical properties of nanocomposites were further improved by increasing the content of MMT, and reached the maximum value at the MMT content of 70 wt%. The 70 wt% MMT/PVA nanocomposite has a tensile strength of 219 ± 19 MPa, which is 5.5 times higher than that of a pure PVA film and surpasses nacre and reported biomimetic layered clay/PVA composites. When the MMT content is higher than 70 wt%, the layered structure is transformed to tactoids, which deteriorate mechanical properties. These results offer comprehensive understanding for developing high-performance biomimetic layered nanocomposite materials with high nanofiller loading.
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Affiliation(s)
- Jianfeng Wang
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, BeiHang University, Beijing, China
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28
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Zhu Z, Senses E, Akcora P, Sukhishvili SA. Programmable light-controlled shape changes in layered polymer nanocomposites. ACS NANO 2012; 6:3152-62. [PMID: 22452351 DOI: 10.1021/nn204938j] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We present soft, layered nanocomposites that exhibit controlled swelling anisotropy and spatially specific shape reconfigurations in response to light irradiation. The use of gold nanoparticles grafted with a temperature-responsive polymer (poly(N-isopropylacrylamide), PNIPAM) with layer-by-layer (LbL) assembly allowed placement of plasmonic structures within specific regions in the film, while exposure to light caused localized material deswelling by a photothermal mechanism. By layering PNIPAM-grafted gold nanoparticles in between nonresponsive polymer stacks, we have achieved zero Poisson's ratio materials that exhibit reversible, light-induced unidirectional shape changes. In addition, we report rheological properties of these LbL assemblies in their equilibrium swollen states. Moreover, incorporation of dissimilar plasmonic nanostructures (solid gold nanoparticles and nanoshells) within different material strata enabled controlled shrinkage of specific regions of hydrogels at specific excitation wavelengths. The approach is applicable to a wide range of metal nanoparticles and temperature-responsive polymers and affords many advanced build-in options useful in optically manipulated functional devices, including precise control of plasmonic layer thickness, tunability of shape variations to the excitation wavelength, and programmable spatial control of optical response.
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Affiliation(s)
- Zhichen Zhu
- Department of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Castle Point on Hudson, Hoboken, New Jersey 07030, United States
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