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Johnson AP, Sabu C, Nivitha K, Sankar R, Shirin VA, Henna T, Raphey V, Gangadharappa H, Kotta S, Pramod K. Bioinspired and biomimetic micro- and nanostructures in biomedicine. J Control Release 2022; 343:724-754. [DOI: 10.1016/j.jconrel.2022.02.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/09/2022] [Accepted: 02/10/2022] [Indexed: 12/15/2022]
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2
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Lossada F, Hoenders D, Guo J, Jiao D, Walther A. Self-Assembled Bioinspired Nanocomposites. Acc Chem Res 2020; 53:2622-2635. [PMID: 32991139 DOI: 10.1021/acs.accounts.0c00448] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bioinspired materials engineering impacts the design of advanced functional materials across many domains of sciences from wetting behavior to optical and mechanical materials. In all cases, the advances in understanding how biology uses hierarchical design to create failure and defect-tolerant materials with emergent properties lays the groundwork for engaging into these topics. Biological mechanical materials are particularly inspiring for their unique combinations of stiffness, strength, and toughness together with lightweightness, as assembled and grown in water from a limited set of building blocks at room temperature. Wood, nacre, crustacean cuticles, and spider silk serve as some examples, where the correct arrangement of constituents and balanced molecular energy dissipation mechanisms allows overcoming the shortcomings of the individual components and leads to synergistic materials performance beyond additive behavior. They constitute a paradigm for future structural materials engineering-in the formation process, the use of sustainable building blocks and energy-efficient pathways, as well as in the property profiles-that will in the long term allow for new classes of high-performance and lightweight structural materials needed to promote energy efficiency in mobile technologies.This Account summarizes our efforts of the past decade with respect to designing self-assembling bioinspired materials aiming for both mechanical high-performance structures and new types of multifunctional property profiles. The Account is set out to first give a definition of bioinspired nanocomposite materials and self-assembly therein, followed by an in-depth discussion on the understanding of mechanical performance and rational design to increase the mechanical performance. We place a particular emphasis on materials formed at high fractions of reinforcements and with tailor-made functional polymers using self-assembly to create highly ordered structures and elucidate in detail how the soft polymer phase needs to be designed in terms of thermomechanical properties and sacrificial supramolecular bonds. We focus on nanoscale reinforcements such as nanoclay and nanocellulose that lead to high contents of internal interfaces and intercalated polymer layers that experience nanoconfinement. Both aspects add fundamental challenges for macromolecular design of soft phases using precision polymer synthesis. We build upon those design criteria and further develop the concepts of adaptive bioinspired nanocomposites, whose properties are switchable from the outside using molecularly defined triggers with light. In a last section, we discuss how new types of functional properties, in particular flexible and transparent gas barrier materials or fire barrier materials, can be reached on the basis of the bioinspired nanocomposite design strategies. Additionally, we show new types of self-assembled photonic materials that can even be evolved into self-assembling lasers, hence moving the concept of mechanical nanocomposite design to other functionalities.The comparative discussion of different bioinspired nanocomposite architectures with nematic, fibrillar, and cholesteric structures, as based on different reinforcing nanoparticles, aims for a unified understanding of the design principles and shall aid researchers in the field in the more elaborate design of future bioinspired nanocomposite materials based on molecular control principles. We conclude by addressing challenges, in particular also the need for a transfer from fundamental molecular materials science into scalable engineering materials of technological and societal relevance.
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Affiliation(s)
- Francisco Lossada
- A3BMS Lab—Active, Adaptive and Autonomous Bioinspired Materials, Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Straße 31, 79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Daniel Hoenders
- A3BMS Lab—Active, Adaptive and Autonomous Bioinspired Materials, Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Straße 31, 79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Jiaqi Guo
- A3BMS Lab—Active, Adaptive and Autonomous Bioinspired Materials, Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Straße 31, 79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Dejin Jiao
- A3BMS Lab—Active, Adaptive and Autonomous Bioinspired Materials, Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Straße 31, 79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Andreas Walther
- A3BMS Lab—Active, Adaptive and Autonomous Bioinspired Materials, Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Straße 31, 79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
- Cluster of Excellence livMatS@FIT—Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
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3
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Preparation and Characterization of Montmorillonite/PEDOT-PSS and Diatomite/PEDOT-PSS Hybrid Materials. Study of Electrochemical Properties in Acid Medium. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs4020051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The hybridization of clay minerals with conducting polymers receives great interest for different potential applications, including environmental remediation. This work studies and compares the electrochemical properties of two different clays, montmorillonite (Mont) and diatomite (Diat), and their respective clay/PEDOT-PSS hybrid materials in H2SO4 medium. The hybrid materials were prepared by electropolymerization of EDOT in the presence of PSS. The physico-chemical and electrochemical properties of both clays were analyzed by different techniques, and the influence of the clay properties on electropolymerization and the electroactivity of the resulting clay/PEDOT-PSS hybrids was investigated. Specifically, the Fe2+/Fe3+ redox probe and the oxidation of diclofenac, as a model pharmaceutical emerging pollutant, were used to test the electron transfer capability and oxidative response, respectively, of the clay/PEDOT-PSS hybrids. The results demonstrate that, despite its low electrical conductivity, the Mont is an electroactive material itself with good electron-transfer capability. Conversely, the Diat shows no electroactivity. The hybridization with PEDOT generally enhances the electroactivity of the clays, but the clay properties affect the electropolymerization efficiency and hybrids electroactivity, so the Mont/PEDOT displays improved electrochemical properties. It is demonstrated that clay/PEDOT-PSS hybrids exhibit diclofenac oxidation capability and diclofenac concentration sensitivity.
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4
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Jatav S, Furlan KP, Liu J, Hill EH. Heterostructured Monolayer MoS 2 Nanoparticles toward Water-Dispersible Catalysts. ACS APPLIED MATERIALS & INTERFACES 2020; 12:19813-19822. [PMID: 32227875 DOI: 10.1021/acsami.0c02246] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
MoS2 is a 2D semiconductor where exfoliation to a single layer results in improved catalytic properties. However, its high surface energy can lead to extensive aggregation, resulting in degraded catalytic performance and stability. Combined with a lack of dispersibility in water, this represents a pitfall for catalysis in the aqueous phase. Herein, we present the use of nanoscopic layered silicates pillared with a cationic surfactant to template the growth of MoS2 in the interlayer space. This provides heterostructured layered nanoparticles ∼25 nm wide by 3-8 nm thick containing isolated MoS2 layers. The resulting nanohybrids retain the disc-like morphology and surface chemistry of the clays, providing good aqueous stability, while also providing access to the catalytic edge-sites of the MoS2 layer. In addition to significant enhancement of catalytic dye degradation, molecular aggregation on the highly charged clay interface is comparable to unmodified clays. These particles are ideal for studies of charge-transport properties in confined semiconductor layers, as well as hierarchical self-assembly into functional materials. This study paves the way to colloidal synthesis of nanoparticulate heterostructures with other functional layered materials, particularly where particle exfoliation, covalent modification, and aqueous stability are concerns.
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Affiliation(s)
- Sanjay Jatav
- Institute of Advanced Ceramics, Hamburg University of Technology, Hamburg 21073, Germany
| | - Kaline P Furlan
- Institute of Advanced Ceramics, Hamburg University of Technology, Hamburg 21073, Germany
| | - Junying Liu
- Institute of Advanced Ceramics, Hamburg University of Technology, Hamburg 21073, Germany
| | - Eric H Hill
- Institute of Advanced Ceramics, Hamburg University of Technology, Hamburg 21073, Germany
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5
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Sung K, Nakagawa S, Kim C, Yoshie N. Fabrication of nacre-like polymer/clay nanocomposites with water-resistant and self-adhesion properties. J Colloid Interface Sci 2020; 564:113-123. [DOI: 10.1016/j.jcis.2019.12.100] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/23/2019] [Accepted: 12/23/2019] [Indexed: 11/29/2022]
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6
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Eckert A, Abbasi M, Mang T, Saalwächter K, Walther A. Structure, Mechanical Properties, and Dynamics of Polyethylenoxide/Nanoclay Nacre-Mimetic Nanocomposites. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b01931] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Alexander Eckert
- DWI—Leibniz-Institute for Interactive Materials, Forckenbeckstr. 50, 52056 Aachen, Germany
- IAP—Institute for Applied Polymer Chemistry, University of Applied Sciences Aachen, Heinrich-Mussmann-Str.1, 52428 Jülich, Germany
| | - Mozhdeh Abbasi
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Betty-Heimann-Str. 7, 06120 Halle, Germany
| | - Thomas Mang
- IAP—Institute for Applied Polymer Chemistry, University of Applied Sciences Aachen, Heinrich-Mussmann-Str.1, 52428 Jülich, Germany
| | - Kay Saalwächter
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Betty-Heimann-Str. 7, 06120 Halle, Germany
| | - Andreas Walther
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Straße 31, 79104 Freiburg, Germany
- Freiburg Materials Research Center, University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
- Freiburg Institute for Advanced Studies, University of Freiburg, 79104 Freiburg, Germany
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7
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Zhang SY, Zhuang Q, Zhang M, Wang H, Gao Z, Sun JK, Yuan J. Poly(ionic liquid) composites. Chem Soc Rev 2020; 49:1726-1755. [DOI: 10.1039/c8cs00938d] [Citation(s) in RCA: 150] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review highlights recent advances in the development of poly(ionic liquid)-based composites for diverse materials applications.
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Affiliation(s)
- Su-Yun Zhang
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- P. R. China
- College of Physics and Optoelectronic Engineering
| | - Qiang Zhuang
- Department of Applied Chemistry
- School of Science
- Northwestern Polytechnical University
- Xi'an
- P. R. China
| | - Miao Zhang
- Department of Materials and Environmental Chemistry
- Stockholm University
- 10691 Stockholm
- Sweden
| | - Hong Wang
- Key Laboratory of Functional Polymer Materials (Ministry of Education)
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin
| | - Zhiming Gao
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- P. R. China
| | - Jian-Ke Sun
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- P. R. China
| | - Jiayin Yuan
- Department of Materials and Environmental Chemistry
- Stockholm University
- 10691 Stockholm
- Sweden
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8
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Investigation on the Preparation and Properties of CMC/magadiite Nacre-Like Nanocomposite Films. Polymers (Basel) 2019; 11:polym11091378. [PMID: 31443463 PMCID: PMC6780612 DOI: 10.3390/polym11091378] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/09/2019] [Accepted: 08/19/2019] [Indexed: 11/17/2022] Open
Abstract
The layered hydrated sodium salt-magadiite (MAG), which has special interpenetrating petals structure, was used as a functional filler to slowly self-assemble with sodium carboxy-methylcellulose (CMC), in order to prepare nacre-like nanocomposite film by solvent evaporation method. The structure of prepared nacre-like nanocomposite film was characterized by Scanning Electron Microscope (SEM) and X-ray diffraction (XRD) analysis; whereas, it was indicated that CMC macromolecules were inserted between the layers of MAG to increase the layer spacing of MAG by forming an interpenetrating petals structure; in the meantime, the addition of MAG improved the thermal stability of CMC. The tensile strength of CMC/MAG was significantly improved compared with pure CMC. The tensile strength of CMC/MAG reached the maximum value at 1.71 MPa when the MAG content was 20%, to maintaining high transparency. Due to the high content of inorganic filler, the flame retarding performance and the thermal stability were also brilliant; hence, the great biocompatibility and excellent mechanical properties of the bionic nanocomposite films with the unique interpenetrating petals structure provided a great probability for these original composites to be widely applied in material research, such as tissue engineering in biomedical research.
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Jablonski J, Yu L, Malik S, Sharma A, Bajaj A, Balasubramaniam SL, Bleher R, Weiner RG, Duncan TV. Migration of Quaternary Ammonium Cations from Exfoliated Clay/Low-Density Polyethylene Nanocomposites into Food Simulants. ACS OMEGA 2019; 4:13349-13359. [PMID: 31460463 PMCID: PMC6705235 DOI: 10.1021/acsomega.9b01529] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 07/25/2019] [Indexed: 06/10/2023]
Abstract
Clay/polymer nanocomposites (CPNs) are polymers incorporating refined clay particles that are frequently functionalized with quaternary ammonium cations (QACs) as dispersion aids. There is interest in commercializing CPNs for food contact applications because they have improved strength and barrier properties, but there are few studies on the potential for QACs in CPNs to transfer to foods under conditions of intended use. In this study, we manufactured low-density poly(ethylene) (LDPE)-based CPNs and assessed whether QACs can migrate into several food simulants under accelerated storage conditions. QACs were found to migrate to a fatty food simulant (ethanol) at levels of ∼1.1 μg mg-1 CPN mass after 10 days at 40 °C, constituting about 4% total migration (proportion of the initial QAC content in the CPN that migrated to the simulant). QAC migration into ethanol was ∼16× higher from LDPE containing approximately the same concentration of QACs but no clay, suggesting that most QACs in the CPN are tightly bound to clay particles and are immobile. Negligible QACs were found to migrate into aqueous, alcoholic, or acidic simulants from CPNs, and the amount of migrated QACs was also found to scale with the temperature and the initial clay concentration. The migration data were compared to a theoretical diffusion model, and it was found that the diffusion constant for QACs in the CPN was several orders of magnitude slower than predicted, which we attributed to the potential for QACs to migrate as dimers or other aggregates rather than as individual ions. Nevertheless, the use of the migration model resulted in a conservative estimate of the mass transfer of QAC from the CPN test specimens.
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Affiliation(s)
- Joseph
E. Jablonski
- Center
for Food Safety and Applied Nutrition, U.S.
Food and Drug Administration, Bedford
Park, Illinois 60501, United States
| | - Longjiao Yu
- Department
of Food Science and Nutrition, Illinois
Institute of Technology, Bedford
Park, Illinois 60501, United States
| | - Sargun Malik
- Department
of Food Science and Nutrition, Illinois
Institute of Technology, Bedford
Park, Illinois 60501, United States
| | - Ashutosh Sharma
- Department
of Food Science and Nutrition, Illinois
Institute of Technology, Bedford
Park, Illinois 60501, United States
| | - Akhil Bajaj
- Department
of Food Science and Nutrition, Illinois
Institute of Technology, Bedford
Park, Illinois 60501, United States
| | | | - Reiner Bleher
- Northwestern
University Atomic and Nanoscale Characterization Experimental (NUANCE)
Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Rebecca G. Weiner
- Center
for Food Safety and Applied Nutrition, U.S.
Food and Drug Administration, Bedford
Park, Illinois 60501, United States
| | - Timothy V. Duncan
- Center
for Food Safety and Applied Nutrition, U.S.
Food and Drug Administration, Bedford
Park, Illinois 60501, United States
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10
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Woo JY, Oh JH, Jo S, Han CS. Nacre-Mimetic Graphene Oxide/Cross-Linking Agent Composite Films with Superior Mechanical Properties. ACS NANO 2019; 13:4522-4529. [PMID: 30896924 DOI: 10.1021/acsnano.9b00158] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We report a graphene oxide/cross-linking agent (GO/CA) composite inspired by the nacre structure. Based on the "brick-and-mortar" concept of nacre, graphene oxide and a cross-linking agent are covalently conjugated in the form of nacre. The mechanical characteristics of the nacre-mimetic GO/CA composite film can be controlled by adjusting the preparation method, degree of cross-linking, and cross-linking times. As a result, the cross-linking strategy can drastically enhance the tensile strength [142.9 ± 6.4 MPa (∼2.3-fold)], modulus [4.7 ± 0.36 GPa (∼15.7-fold)], and hardness [917.4 ± 85.7 MPa (∼9.0-fold)], which are superior to those of pristine materials. The cross-linking agent-based chemical bonding method for mechanically improved integration is mainly attributed to the formation of strong cross-linked networks between the GO-based 2D interfaces and CA. The facile fabrication process provides many opportunities to design advanced, robust, and integrated nacre-like GO/CA composites, which can be applied to future aerospace utilizations, electronic protectors, robotic elements, and permeable membranes.
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11
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Riehle F, Hoenders D, Guo J, Eckert A, Ifuku S, Walther A. Sustainable Chitin Nanofibrils Provide Outstanding Flame-Retardant Nanopapers. Biomacromolecules 2019; 20:1098-1108. [DOI: 10.1021/acs.biomac.8b01766] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Felix Riehle
- Institute for Macromolecular Chemistry, Stefan-Meier-Strasse 31, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Materials Research Center, Stefan-Meier-Strasse 21, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies, Georges-Köhler-Allee 105, University of Freiburg, 79110 Freiburg, Germany
| | - Daniel Hoenders
- Institute for Macromolecular Chemistry, Stefan-Meier-Strasse 31, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Materials Research Center, Stefan-Meier-Strasse 21, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies, Georges-Köhler-Allee 105, University of Freiburg, 79110 Freiburg, Germany
| | - Jiaqi Guo
- Institute for Macromolecular Chemistry, Stefan-Meier-Strasse 31, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Materials Research Center, Stefan-Meier-Strasse 21, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies, Georges-Köhler-Allee 105, University of Freiburg, 79110 Freiburg, Germany
| | - Alexander Eckert
- DWI − Leibniz-Institute for Interactive Materials, Forckenbeckstr. 50, 52056 Aachen, Germany
| | - Shinsuke Ifuku
- Graduate School of Engineering, Tottori University, 101-4 Koyama-cho Minami, Tottori, 680-8502, Japan
| | - Andreas Walther
- Institute for Macromolecular Chemistry, Stefan-Meier-Strasse 31, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Materials Research Center, Stefan-Meier-Strasse 21, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies, Georges-Köhler-Allee 105, University of Freiburg, 79110 Freiburg, Germany
- Freiburg Institute for Advanced Studies, University of Freiburg, 79104 Freiburg, Germany
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12
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Dedzo GK. Kaolinite Clay Mineral Reactivity Improvement through Ionic Liquid Functionalization. Isr J Chem 2018. [DOI: 10.1002/ijch.201800130] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gustave Kenne Dedzo
- Department of Inorganic ChemistryUniversity of Yaoundé I B.P. 812 Yaoundé Cameroon
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13
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George J, Ishida H. A review on the very high nanofiller-content nanocomposites: Their preparation methods and properties with high aspect ratio fillers. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2018.07.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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14
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Eckert A, Rudolph T, Guo J, Mang T, Walther A. Exceptionally Ductile and Tough Biomimetic Artificial Nacre with Gas Barrier Function. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1802477. [PMID: 29947065 DOI: 10.1002/adma.201802477] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 05/18/2018] [Indexed: 05/25/2023]
Abstract
Synthetic mimics of natural high-performance structural materials have shown great and partly unforeseen opportunities for the design of multifunctional materials. For nacre-mimetic nanocomposites, it has remained extraordinarily challenging to make ductile materials with high stretchability at high fractions of reinforcements, which is however of crucial importance for flexible barrier materials. Here, highly ductile and tough nacre-mimetic nanocomposites are presented, by implementing weak, but many hydrogen bonds in a ternary nacre-mimetic system consisting of two polymers (poly(vinyl amine) and poly(vinyl alcohol)) and natural nanoclay (montmorillonite) to provide efficient energy dissipation and slippage at high nanoclay content (50 wt%). Tailored interactions enable exceptional combinations of ductility (close to 50% strain) and toughness (up to 27.5 MJ m-3 ). Extensive stress whitening, a clear sign of high internal dynamics at high internal cohesion, can be observed during mechanical deformation, and the materials can be folded like paper into origami planes without fracture. Overall, the new levels of ductility and toughness are unprecedented in highly reinforced bioinspired nanocomposites and are of critical importance to future applications, e.g., as barrier materials needed for encapsulation and as a printing substrate for flexible organic electronics.
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Affiliation(s)
- Alexander Eckert
- DWI - Leibniz-Institute for Interactive Materials, Forckenbeckstr 50, 52056, Aachen, Germany
- Institute for Applied Polymer Chemistry, University of Applied Sciences Aachen, Heinrich-Mussmann-Str. 1, 52428, Jülich, Germany
| | - Tobias Rudolph
- Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Kantstr 55, 14513, Teltow, Germany
| | - Jiaqi Guo
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, 79104, Freiburg, Germany
- Freiburg Materials Research Center, University of Freiburg, Stefan-Meier-Str. 21, 79104, Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110, Freiburg, Germany
| | - Thomas Mang
- Institute for Applied Polymer Chemistry, University of Applied Sciences Aachen, Heinrich-Mussmann-Str. 1, 52428, Jülich, Germany
| | - Andreas Walther
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, 79104, Freiburg, Germany
- Freiburg Materials Research Center, University of Freiburg, Stefan-Meier-Str. 21, 79104, Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110, Freiburg, Germany
- Freiburg Institute for Advanced Studies, Albertstraße 19, 79104, Freiburg, Germany
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15
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Zhou Y, Hou D, Manzano H, Orozco CA, Geng G, Monteiro PJM, Liu J. Interfacial Connection Mechanisms in Calcium-Silicate-Hydrates/Polymer Nanocomposites: A Molecular Dynamics Study. ACS APPLIED MATERIALS & INTERFACES 2017; 9:41014-41025. [PMID: 29076343 DOI: 10.1021/acsami.7b12795] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Properties of organic/inorganic composites can be highly dependent on the interfacial connections. In this work, molecular dynamics, using pair-potential-based force fields, was employed to investigate the structure, dynamics, and stability of interfacial connections between calcium-silicate-hydrates (C-S-H) and organic functional groups of three different polymer species. The calculation results suggest that the affinity between C-S-H and polymers is influenced by the polarity of the functional groups and the diffusivity and aggregation tendency of the polymers. In the interfaces, the calcium counterions from C-S-H act as the coordination atoms in bridging the double-bonded oxygen atoms in the carboxyl groups (-COOH), and the Ca-O connection plays a dominant role in binding poly(acrylic acid) (PAA) due to the high bond strength defined by time-correlated function. The defective calcium-silicate chains provide significant numbers of nonbridging oxygen sites to accept H-bonds from -COOH groups. As compared with PAA, the interfacial interactions are much weaker between C-S-H and poly(vinyl alcohol) (PVA) or poly(ethylene glycol) (PEG). Predominate percentage of the -OH groups in the PVA form H-bonds with inter- and intramolecule, which results in the polymer intertwining and reduces the probability of H-bond connections between PVA and C-S-H. On the other hand, the inert functional groups (C-O-C) in poly(ethylene glycol) (PEG) make this polymer exhibit unfolded configurations and move freely with little restrictions. The interaction mechanisms interpreted in this organic-inorganic interface can give fundamental insights into the polymer modification of C-S-H and further implications to improving cement-based materials from the genetic level.
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Affiliation(s)
- Yang Zhou
- School of Materials Science and Engineering, Southeast University , Nanjing 211189, China
- Department of Civil and Environmental Engineering, University of California , Berkeley, California 94720, United States
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Research Institute of Building Science Co. , Nanjing 211103, China
| | - Dongshuai Hou
- School of Civil Engineering, Qingdao Technological University , Qingdao 266033, China
| | - Hegoi Manzano
- Department of Condensed Matter Physics, University of the Basque Country UPV/EHU , Barrio Sarriena s/n, 48960 Leioa, Spain
| | - Carlos A Orozco
- Department of Civil and Environmental Engineering, University of California , Berkeley, California 94720, United States
| | - Guoqing Geng
- Department of Civil and Environmental Engineering, University of California , Berkeley, California 94720, United States
| | - Paulo J M Monteiro
- Department of Civil and Environmental Engineering, University of California , Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Jiaping Liu
- School of Materials Science and Engineering, Southeast University , Nanjing 211189, China
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16
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Diaz AJ, Noh H, Meier T, Solares SD. High-stress study of bioinspired multifunctional PEDOT:PSS/nanoclay nanocomposites using AFM, SEM and numerical simulation. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2017; 8:2069-2082. [PMID: 29090109 PMCID: PMC5647735 DOI: 10.3762/bjnano.8.207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 09/06/2017] [Indexed: 05/08/2023]
Abstract
Bioinspired design has been central in the development of hierarchical nanocomposites. Particularly, the nacre-mimetic brick-and-mortar structure has shown excellent mechanical properties, as well as gas-barrier properties and optical transparency. Along with these intrinsic properties, the layered structure has also been utilized in sensing devices. Here we extend the multifunctionality of nacre-mimetics by designing an optically transparent and electron conductive coating based on PEDOT:PSS and nanoclays Laponite RD and Cloisite Na+. We carry out extensive characterization of the nanocomposite using transmittance spectra (transparency), conductive atomic force microscopy (conductivity), contact-resonance force microscopy (mechanical properties), and SEM combined with a variety of stress-strain AFM experiments and AFM numerical simulations (internal structure). We further study the nanoclay's response to the application of pressure with multifrequency AFM and conductive AFM, whereby increases and decreases in conductivity can occur for the Laponite RD composites. We offer a possible mechanism to explain the changes in conductivity by modeling the coating as a 1-dimensional multibarrier potential for electron transport, and show that conductivity can change when the separation between the barriers changes under the application of pressure, and that the direction of the change depends on the energy of the electrons. We did not observe changes in conductivity under the application of pressure with AFM for the Cloisite Na+ nanocomposite, which has a large platelet size compared with the AFM probe diameter. No pressure-induced changes in conductivity were observed in the clay-free polymer either.
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Affiliation(s)
- Alfredo J Diaz
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC 20052, United States
| | - Hanaul Noh
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC 20052, United States
| | - Tobias Meier
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC 20052, United States
| | - Santiago D Solares
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC 20052, United States
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17
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Yadav R, Naebe M, Wang X, Kandasubramanian B. Review on 3D Prototyping of Damage Tolerant Interdigitating Brick Arrays of Nacre. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b01679] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ramdayal Yadav
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia
| | - Minoo Naebe
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia
| | - Xungai Wang
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia
| | - Balasubramanian Kandasubramanian
- Rapid
Prototyping Lab, Department of Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune 411025, India
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18
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Hill EH, Hanske C, Johnson A, Yate L, Jelitto H, Schneider GA, Liz-Marzán LM. Metal Nanoparticle Growth within Clay-Polymer Nacre-Inspired Materials for Improved Catalysis and Plasmonic Detection in Complex Biofluids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8774-8783. [PMID: 28502180 DOI: 10.1021/acs.langmuir.7b00754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Recent studies have shown that layered silicate clays can be used to form a nacre-like bioinspired layered structure with various polymer fillers, leading to composite films with good material strength, gas-barrier properties, and high loading capacity. We go one step further by in situ growing metal nanoparticles in nacre-like layered films based on layered silicate clays, which can be used for applications in plasmonic sensing and catalysis. The degree of anisotropy of the nanoparticles grown in the film can be controlled by adjusting the ratio of clay to polymer or gold to clay and reducing agent concentration, as well as silver overgrowth, which greatly enhances the surface enhanced Raman scattering activity of the composite. We show the performance of the films for SERS detection of bacterial quorum sensing molecules in culture medium, and catalytic properties are demonstrated through the reduction of 4-nitroaniline. These films serve as the first example of seedless, in situ nanoparticle growth within nacre-mimetic materials, and open the path to basic research on the influence of different building blocks and polymeric mortars on nanoparticle morphology and distribution, as well as applications in catalysis, sensing, and antimicrobial surfaces using such materials.
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Affiliation(s)
- Eric H Hill
- Bionanoplasmonics Laboratory, CIC biomaGUNE , 20014 Donostia-San Sebastián, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine, Ciber-BBN , 20014 Donostia-San Sebastián, Spain
| | - Christoph Hanske
- Bionanoplasmonics Laboratory, CIC biomaGUNE , 20014 Donostia-San Sebastián, Spain
| | - Alexander Johnson
- Bionanoplasmonics Laboratory, CIC biomaGUNE , 20014 Donostia-San Sebastián, Spain
| | - Luis Yate
- Bionanoplasmonics Laboratory, CIC biomaGUNE , 20014 Donostia-San Sebastián, Spain
| | - Hans Jelitto
- Institute of Advanced Ceramics, Hamburg University of Technology , 21073 Hamburg, Germany
| | - Gerold A Schneider
- Institute of Advanced Ceramics, Hamburg University of Technology , 21073 Hamburg, Germany
| | - Luis M Liz-Marzán
- Bionanoplasmonics Laboratory, CIC biomaGUNE , 20014 Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science , 48013 Bilbao, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine, Ciber-BBN , 20014 Donostia-San Sebastián, Spain
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19
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Xiang Z, Zhang L, Li Y, Yuan T, Zhang W, Sun J. Reduced Graphene Oxide-Reinforced Polymeric Films with Excellent Mechanical Robustness and Rapid and Highly Efficient Healing Properties. ACS NANO 2017; 11:7134-7141. [PMID: 28692251 DOI: 10.1021/acsnano.7b02970] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The fabrication of nanofiller-reinforced intrinsic healable polymer composite films with both excellent mechanical robustness and highly efficient healability is challenging because the mobility of the polymer chains is suppressed by the incorporated nanofillers. In this study, we exploit the reversible host-guest interactions between nanofillers and the matrix polymer films and report the fabrication of intrinsically healable, reduced graphene oxide (RGO)-reinforced polymer composite films capable of conveniently and repeatedly healing cuts of several tens of micrometers wide. The healable films can be prepared via layer-by-layer assembly of poly(acrylic acid) (PAA) with complexes of branched poly(ethylenimine) grafted with ferrocene (bPEI-Fc) and RGO nanosheets modified with β-cyclodextrin (RGO-CD) (denoted as bPEI-Fc&RGO-CD). The as-prepared PAA/bPEI-Fc&RGO-CD films are mechanically robust with a Young's modulus of 17.2 ± 1.9 GPa and a hardness of 1.00 ± 0.30 GPa. The healing process involves two steps: (i) healing of cuts in an oxidation condition in which the host-guest interactions between bPEI-Fc and RGO-CD nanosheets are broken and the cuts on the films are healed; and (ii) reconstruction of host-guest interactions between bPEI-Fc and RGO-CD nanosheets via reduction to restore the original mechanical robustness of the films.
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Affiliation(s)
- Zilong Xiang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China
| | - Ling Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China
| | - Yixuan Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China
| | - Tao Yuan
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China
| | - Wenshi Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China
| | - Junqi Sun
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China
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20
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Yao K, Huang S, Tang H, Xu Y, Buntkowsky G, Berglund LA, Zhou Q. Bioinspired Interface Engineering for Moisture Resistance in Nacre-Mimetic Cellulose Nanofibrils/Clay Nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2017; 9:20169-20178. [PMID: 28530799 DOI: 10.1021/acsami.7b02177] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The interfacial adhesion design between "mortar" and "bricks" is essential for mechanical and barrier performance of nanocellulose-based nacre-mimetic nanocomposites, especially at high moisture conditions. To address this fundamental challenge, dopamine (DA) has been conjugated to cellulose nanofibrils (CNFs) and subsequently assembled with montmorillonite (MTM) to generate layered nanocomposite films inspired by the strong adhesion of mussel adhesive proteins to inorganic surfaces under water. The selective formation of catechol/metal ion chelation and hydrogen bonding at the interface between MTM platelets and CNFs bearing DA renders transparent films with strong mechanical properties, particularly at high humidity and in wet state. Increasing the amount of conjugated DA on CNFs results in nanocomposites with increased tensile strength and modulus, up to 57.4 MPa and 1.1 GPa, respectively, after the films are swollen in water. The nanocomposites also show excellent gas barrier properties at high relative humidity (95%), complementing the multifunctional property profile.
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Affiliation(s)
- Kun Yao
- School of Biotechnology, Royal Institute of Technology, Alba Nova University Centre , SE-106 91 Stockholm, Sweden
- Wallenberg Wood Science Center, Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - Shu Huang
- School of Biotechnology, Royal Institute of Technology, Alba Nova University Centre , SE-106 91 Stockholm, Sweden
| | - Hu Tang
- School of Biotechnology, Royal Institute of Technology, Alba Nova University Centre , SE-106 91 Stockholm, Sweden
| | - Yeping Xu
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt , 64287 Darmstadt, Germany
| | - Gerd Buntkowsky
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt , 64287 Darmstadt, Germany
| | - Lars A Berglund
- Wallenberg Wood Science Center, Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - Qi Zhou
- School of Biotechnology, Royal Institute of Technology, Alba Nova University Centre , SE-106 91 Stockholm, Sweden
- Wallenberg Wood Science Center, Royal Institute of Technology , SE-100 44 Stockholm, Sweden
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21
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Debuigne A, Jérôme C, Detrembleur C. Organometallic-mediated radical polymerization of ‘less activated monomers’: Fundamentals, challenges and opportunities. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.01.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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22
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Jagtap SB, Ratna D. Effect of molecular weight of curing agents on properties of nanocomposites based on epoxy resin and organoclay with reactive modifier. J Appl Polym Sci 2017. [DOI: 10.1002/app.44595] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Siddheshwar B. Jagtap
- Polymer Science and Engineering Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune 411008 India
| | - Debdatta Ratna
- Polymer Science and Technology Centre, Naval Materials Research Laboratory; Shill-Badlapur Road, Anand Nagar P.O Ambernath (E) 421506 India
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23
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Zhao M, Yi D, Camino G, Frache A, Yang R. Interdigitated crystalline MMT–MCA in polyamide 6. RSC Adv 2017. [DOI: 10.1039/c6ra26084e] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel interdigitated crystalline MMT–MCA shows outstanding fire retardancy owing to homogeneous dispersion of MMT and MCA in PA6.
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Affiliation(s)
- Min Zhao
- National Engineering Research Center of Flame Retardant Materials
- School of Materials Science and Engineering
- Beijing Institute of Technology
- Beijing
- China
| | - Deqi Yi
- National Engineering Research Center of Flame Retardant Materials
- School of Materials Science and Engineering
- Beijing Institute of Technology
- Beijing
- China
| | - Giovanni Camino
- Polytechnic of Turin
- UdR INSTM of Turin
- 15121 Alessandria
- Italy
| | - Alberto Frache
- Polytechnic of Turin
- UdR INSTM of Turin
- 15121 Alessandria
- Italy
| | - Rongjie Yang
- National Engineering Research Center of Flame Retardant Materials
- School of Materials Science and Engineering
- Beijing Institute of Technology
- Beijing
- China
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24
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Fang F, Li YQ, Huang GW, Xiao HM, Feng QP, Hu N, Fu SY. Electrical anisotropy and multidimensional pressure sensor of aligned Fe3O4@silver nanowire/polyaniline composite films under an extremely low magnetic field. RSC Adv 2017. [DOI: 10.1039/c6ra25128e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The PDMS sealed aligned Ag nanowire/PANI composite film as a multi-dimensional pressure sensor.
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Affiliation(s)
- Fang Fang
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
- University of Chinese Academy of Sciences
| | - Yuan-Qing Li
- College of Aerospace Engineering
- Chongqing University
- Chongqing 400044
- China
| | - Gui-Wen Huang
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Hong-Mei Xiao
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Qing-Ping Feng
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Ning Hu
- College of Aerospace Engineering
- Chongqing University
- Chongqing 400044
- China
| | - Shao-Yun Fu
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
- College of Aerospace Engineering
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25
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Xu DF, Cai J, Zhang LN. High strength cellulose composite films reinforced with clay for applications as antibacterial materials. CHINESE JOURNAL OF POLYMER SCIENCE 2016. [DOI: 10.1007/s10118-016-1840-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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26
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Zhu B, Noack M, Merindol R, Barner-Kowollik C, Walther A. Light-Adaptive Supramolecular Nacre-Mimetic Nanocomposites. NANO LETTERS 2016; 16:5176-5182. [PMID: 27455047 DOI: 10.1021/acs.nanolett.6b02127] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nature provides design paradigms for adaptive, self-healing, and synergistic high-performance structural materials. Nacre's brick-and-mortar architecture is renowned for combining stiffness, toughness, strength, and lightweightness. Although elaborate approaches exist to mimic its static structure and performance, and to incorporate functionalities for the engineering world, there is a profound gap in addressing adaptable mechanical properties, particularly using remote, quick, and spatiotemporal triggers. Here, we demonstrate a generic approach to control the mechanical properties of nacre-inspired nanocomposites by designing a photothermal energy cascade using colloidal graphene as light-harvesting unit and coupling it to molecularly designed, thermoreversible, supramolecular bonds in the nanoconfined soft phase of polymer/nanoclay nacre-mimetics. The light intensity leads to adaptive steady-states balancing energy uptake and dissipation. It programs the mechanical properties and switches the materials from high stiffness/strength to higher toughness within seconds under spatiotemporal control. We envisage possibilities beyond mechanical materials, for example, light-controlled (re)shaping or actuation in highly reinforced nanocomposites.
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Affiliation(s)
- Baolei Zhu
- DWI-Leibniz Institute for Interactive Materials , Forckenbeckstr. 50, 52074 Aachen, Germany
| | - Manuel Noack
- DWI-Leibniz Institute for Interactive Materials , Forckenbeckstr. 50, 52074 Aachen, Germany
| | - Remi Merindol
- DWI-Leibniz Institute for Interactive Materials , Forckenbeckstr. 50, 52074 Aachen, Germany
| | - Christopher Barner-Kowollik
- Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT) , Engesserstr. 18, 76128 Karlsruhe, Germany
- Institut für Biologische Grenzflächen (IBG), Karlsruhe Institute of Technology (KIT) , Herrmann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Andreas Walther
- DWI-Leibniz Institute for Interactive Materials , Forckenbeckstr. 50, 52074 Aachen, Germany
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27
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García-González N, Frontana-Uribe BA, Ordoñez-Regil E, Cárdenas J, Morales-Serna JA. Evaluation of Fe3+fixation into montmorillonite clay and its application in the polymerization of ethylenedioxythiophene. RSC Adv 2016. [DOI: 10.1039/c6ra21692g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An analysis of the sorption process allowed to establish that Fe3+sorption into montmorillonite is a chemical process that involves an exchange of cations from the montmorillonite interstitial space between layers.
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Affiliation(s)
- N. García-González
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México 04510
| | - B. A. Frontana-Uribe
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México 04510
| | | | - J. Cárdenas
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México 04510
| | - J. A. Morales-Serna
- Departamento de Química
- Universidad Autónoma Metropolitana-Iztapalapa
- Ciudad de México 09340
- Mexico
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