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Yang L, Nickmilder P, Verhoogt H, Hoeks T, Leclère P. Probing Viscoelastic Properties and Interfaces in High-Density Polyethylene Vitrimers at the Nanoscale Using Dynamic Mode Atomic Force Microscopy. ACS APPLIED MATERIALS & INTERFACES 2024; 16:38501-38510. [PMID: 38993000 DOI: 10.1021/acsami.4c06809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/13/2024]
Abstract
Vitrimers are a new class of heterogeneous polymers that combine the best features of thermosets with those of thermoplastics. The introduction of cross-links strongly changes the viscoelastic behavior of vitrimer materials. However, the characterization and understanding of the nanostructures and interfaces in vitrimers resulting from dynamic cross-linking formation remain a major challenge. Here, using dynamic modes of atomic force microscopy (AFM), namely intermodulation AFM (ImAFM) and AFM-based dynamic mechanical analysis (AFM-nDMA), local viscoelastic properties and interfaces at the nanoscale length of high-density polyethylene (HDPE) vitrimer materials are reported. ImAFM imaging in combination with the k-means clustering algorithm clearly reveals two distinct phases in the vitrimer system with highly different viscoelastic properties. AFM-nDMA further provides quantitative nanoviscoelastic properties at the nanoscale to confirm that there is a cross-linking-rich aggregation area forming a nanosize network structure in the cross-linking-poor matrix phase. The cross-linking-rich region shows a similar elastic modulus but much higher adhesion force measured by AFM compared to the cross-linking-poor HDPE matrix. Furthermore, the frequency influence on the local viscoelastic properties of HDPE vitrimer at the nanoscale was initially screened. The observed HDPE vitrimer nanostructures and viscoelastic properties at the nanoscale also provide explanations on the observed bulk HDPE vitrimer crystallinity decrease and dimensional stability increase compared to HDPE. Therefore, probing the viscoelastic properties and interfaces of HDPE vitrimer provides important insights into understanding of the correlations between the vitrimer nanostructure and the bulk mechanical and rheological behaviors.
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Affiliation(s)
- Lanti Yang
- Analytical Science Europe, Corporate T&I, SABIC, Plasticslaan 1, Bergen op Zoom 4612 PX, The Netherlands
| | - Pierre Nickmilder
- Laboratory for Physics of Nanomaterials and Energy (LPNE), Research Institute in Materials Science and Engineering, University of Mons (UMONS), Mons B-7000, Belgium
| | - Henk Verhoogt
- High Performance Materials, Corporate T&I, SABIC, Geleen 6167 RD, The Netherlands
| | - Theo Hoeks
- Corporate T&I, SABIC, Plasticslaan 1, Bergen op Zoom 4612 PX, The Netherlands
| | - Philippe Leclère
- Laboratory for Physics of Nanomaterials and Energy (LPNE), Research Institute in Materials Science and Engineering, University of Mons (UMONS), Mons B-7000, Belgium
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2
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Aydin HB, Ozcelikkale A, Acar A. Exploiting Matrix Stiffness to Overcome Drug Resistance. ACS Biomater Sci Eng 2024. [PMID: 38967485 DOI: 10.1021/acsbiomaterials.4c00445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
Drug resistance is arguably one of the biggest challenges facing cancer research today. Understanding the underlying mechanisms of drug resistance in tumor progression and metastasis are essential in developing better treatment modalities. Given the matrix stiffness affecting the mechanotransduction capabilities of cancer cells, characterization of the related signal transduction pathways can provide a better understanding for developing novel therapeutic strategies. In this review, we aimed to summarize the recent advancements in tumor matrix biology in parallel to therapeutic approaches targeting matrix stiffness and its consequences in cellular processes in tumor progression and metastasis. The cellular processes governed by signal transduction pathways and their aberrant activation may result in activating the epithelial-to-mesenchymal transition, cancer stemness, and autophagy, which can be attributed to drug resistance. Developing therapeutic strategies to target these cellular processes in cancer biology will offer novel therapeutic approaches to tailor better personalized treatment modalities for clinical studies.
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Affiliation(s)
- Hakan Berk Aydin
- Department of Biological Sciences, Middle East Technical University, 06800, Ankara, Turkey
| | - Altug Ozcelikkale
- Department of Mechanical Engineering, Middle East Technical University, 06800, Ankara, Turkey
- Graduate Program of Biomedical Engineering, Middle East Technical University, 06800, Ankara, Turkey
| | - Ahmet Acar
- Department of Biological Sciences, Middle East Technical University, 06800, Ankara, Turkey
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3
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Colijn I, van der Kooij HM, Schroën K. From fundamental insights to rational (bio)polymer nanocomposite design - Connecting the nanometer to meter scale. Adv Colloid Interface Sci 2024; 324:103076. [PMID: 38301315 DOI: 10.1016/j.cis.2023.103076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/24/2023] [Accepted: 12/24/2023] [Indexed: 02/03/2024]
Abstract
Nanoparticle addition has the potential to make bioplastic use mainstream, as the resultant nanocomposite shows improved mechanical, barrier, and thermal properties. It is well established that the architecture and dynamics of the nanoparticle-polymer interphasial region, ∼ 1.5-9 nm from the nanoparticle surface, are crucial for nanocomposite characteristics. Yet, how these molecular phenomena translate to the bulk is still largely unknown. A multi-disciplinary and multi-scale vision is required to capture the full picture and improve materials far beyond what is currently possible. In this review, a first step in bridging the apparent gap between fundamental insights toward observed material properties is made. At the molecular scale, the polymer chain density and dynamics at the nanoparticle surface are governed by a complex interplay between enthalpy and entropy. The resultant interphasial properties can only be propagated to the macroscopic scale effectively when the nanoparticles are well-distributed. This makes the dispersion state a key parameter for which thermodynamic and kinetic insights can be used to prevent nanoparticle aggregation. These insights are linked to material properties relevant to packaging. The outlook section elaborates on the remaining challenges and the steps required to further understand and better design nanocomposite systems.
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Affiliation(s)
- Ivanna Colijn
- Wageningen University and Research, Food Process Engineering Group, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands.
| | - Hanne M van der Kooij
- Wageningen University and Research, Physical Chemistry and Soft Matter Group, Stippeneng 4, 6708 WE Wageningen, the Netherlands.
| | - Karin Schroën
- Wageningen University and Research, Food Process Engineering Group, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands.
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4
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Reda H, Chazirakis A, Behbahani AF, Savva N, Harmandaris V. Revealing the Role of Chain Conformations on the Origin of the Mechanical Reinforcement in Glassy Polymer Nanocomposites. NANO LETTERS 2024; 24:148-155. [PMID: 37983090 DOI: 10.1021/acs.nanolett.3c03491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
Understanding the mechanism of mechanical reinforcement in glassy polymer nanocomposites is of paramount importance for their tailored design. Here, we present a detailed investigation, via atomistic simulation, of the coupling between density, structure, and conformations of polymer chains with respect to their role in mechanical reinforcement. Probing the properties at the molecular level reveals that the effective mass density as well as the rigidity of the matrix region changes with filler volume fraction, while that of the interphase remains constant. The origin of the mechanical reinforcement is attributed to the heterogeneous chain conformations in the vicinity of the nanoparticles, involving a 2-fold mechanism. In the low-loading regime, the reinforcement comes mainly from a thin, single-molecule, 2D-like layer of adsorbed polymer segments on the nanoparticle, whereas in the high-loading regime, the reinforcement is dominated by the coupling between train and bridge conformations; the latter involves segments connecting neighboring nanoparticles.
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Affiliation(s)
- Hilal Reda
- Computation-based Science and Technology Research Center, The Cyprus Institute, Nicosia 2121, Cyprus
| | - Anthony Chazirakis
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology - Hellas, Heraklion GR 71110, Greece
| | - Alireza Foroozani Behbahani
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology - Hellas, Heraklion GR 71110, Greece
- Department of Mathematics and Applied Mathematics, University of Crete, Heraklion GR 71110, Greece
| | - Nikos Savva
- Computation-based Science and Technology Research Center, The Cyprus Institute, Nicosia 2121, Cyprus
| | - Vagelis Harmandaris
- Computation-based Science and Technology Research Center, The Cyprus Institute, Nicosia 2121, Cyprus
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology - Hellas, Heraklion GR 71110, Greece
- Department of Mathematics and Applied Mathematics, University of Crete, Heraklion GR 71110, Greece
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5
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Xu J, Bai L, Ren W, Zhu H, Zhou X, Zhang C, Wang X. Flattened chains dominate the adsorption dynamics of loosely adsorbed chains on modified planar substrates. SOFT MATTER 2023; 20:201-211. [PMID: 38078383 DOI: 10.1039/d3sm01339a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Herein, the adsorption of polystyrene (PS) on phenyl-modified SiO2-Si substrates was investigated. Different from those for PS adsorption on a neat SiO2-Si substrate, the growth rate (vads) in the linear regime and hads/Rg (hads, thickness of flattened and loosely adsorbed layers on the substrate; Rg, radius of gyration) declined with increasing molecular weight (Mw) of PS and the phenyl content on the modified substrates, while the thickness of the flattened layer (hflat) and its coverage increased with increasing phenyl content. The results indicated that the adsorption of loose chains was controlled by the adsorption of flattened chains, as it only occurred in the empty contact sites remaining after the adsorption of flattened chains. Before approaching quasi-equilibrium (t < tcross), the number of flattened chain contact sites increased due to an enthalpically favorable process and, correspondingly, their spatial positions dynamically changed, which perturbed the adsorption of loose chains. When the adsorption of flattened chains reached quasi-equilibrium (t > tcross), the adsorption of loose chains was determined by the empty contact sites. The coverage of flattened chains and time to reach quasi-equilibrium were increased with more phenyl groups on the substrate, enhancing π-π interfacial interactions and resulting in a decreased adsorption rate and fewer loosely adsorbed chains. Mw-dependent vads and hads/Rg differed on phenyl-modified substrates compared to the neat SiO2-Si substrate owing to fewer empty contact sites for loose chains. The study findings improve our understanding of the mechanism responsible for the formation and structure of the adsorbed layer on solid surfaces.
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Affiliation(s)
- Jianquan Xu
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China.
| | - Lu Bai
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China.
| | - Weizhao Ren
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China.
| | - Huifeng Zhu
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China.
| | - Xianjing Zhou
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China.
| | - Cuiyun Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China.
| | - Xinping Wang
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China.
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Xing R, Li Z, Zhao W, Wang D, Xie R, Chen Y, Wu L, Fang X. Waterproof and Flexible Perovskite Photodetector Enabled By P-type Organic Molecular Rubrene with High Moisture and Mechanical Stability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2310248. [PMID: 38118456 DOI: 10.1002/adma.202310248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/16/2023] [Indexed: 12/22/2023]
Abstract
Metal halide perovskite films have gained significant attention because of their remarkable optoelectronic performances. However, their poor stability upon the severe environment appears to be one of the main facets that impedes their further commercial applications. Herein, a method to improve the stability of flexible photodetectors under water and humidity environment without encapsulation is reported. The devices are fabricated using the physical vapor deposition method (Pulse Laser Deposition & Thermal Evaporation) under high-vacuum conditions. An amorphous organic Rubrene film with low molecular polarity and high elastic modulus serves as both a protective layer and hole transport layer. After immersed in water for 6000 min, the photoluminescence intensity attenuation of films only decreased by a maximum of 10%. The demonstrator device, based on Rubrene/CsPbBr3 /ZnO heterojunction confirms that the strategy not only enhances device moisture and mechanical stability but also achieves high sensitivity in optoelectronic detection. In self-powered mode, it has a fast response time of 79.4 µs /207.6 µs and a responsivity 124 mA W-1 . Additionally, the absence of encapsulation simplifies the fabrication of complex electrodes, making it suitable for various applications. This study highlights the potential use of amorphous organic films in improving the stability of perovskite-based flexible devices.
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Affiliation(s)
- Ruofei Xing
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China
| | - Ziqing Li
- Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception, Institute of Optoelectronics, Fudan University, Shanghai, 200433, P. R. China
| | - Wenxiao Zhao
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Dong Wang
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Ranran Xie
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Yanxue Chen
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Limin Wu
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China
- College of Chemistry and Chemical Engineering Inner Mongolia University, Hohhot, 010021, P. R. China
| | - Xiaosheng Fang
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China
- Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception, Institute of Optoelectronics, Fudan University, Shanghai, 200433, P. R. China
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7
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Sugak N, Pham H, Datye A, Mukhopadhyay S, Tan H, Li M, Pfefferle LD. Controlling the spacing of the linked graphene oxide system with dithiol linkers under confinement. NANOSCALE ADVANCES 2023; 5:4553-4562. [PMID: 37638151 PMCID: PMC10448350 DOI: 10.1039/d3na00324h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/31/2023] [Indexed: 08/29/2023]
Abstract
2D nanoscale confined systems exhibit behavior that is markedly different from that observed at the macroscale. Confinement can be tuned by controlling the interlayer spacing between confining layers using organic dithiol linkers. Adjusting spacing and selective intercalation have important impacts for catalysis, superconductivity, spin engineering, sodium ion batteries, 2D magnets, optoelectronics, and many other applications. In this study, we report how reaction conditions and organic linkers can be used to create variable, reproducible spacings between graphene oxide to provide confinement systems. We determined the conditions under which the spacing can be variably adjusted by the type of linker used, the concentration of the linker, and the reaction conditions. Employing dithiol linkers of different lengths, such as three (TPDT) and four (QPDT) aromatic rings, we can adjust the spacing between graphene oxide layers under varied reaction conditions. Here, we show that by varying dithiol linker length and using different reaction conditions, we can reproducibly control the spacing between graphene oxide layers from 0.37 nm to over 0.50 nm.
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Affiliation(s)
- Nikita Sugak
- Department of Chemical and Environmental Engineering, Yale University PO Box 208286 New Haven CT 06510-8286 USA
| | - Hien Pham
- Department of Chemical & Biological Engineering, University of New Mexico Albuquerque NM 87131 USA
| | - Abhaya Datye
- Department of Chemical & Biological Engineering, University of New Mexico Albuquerque NM 87131 USA
| | - Shomeek Mukhopadhyay
- Department of Chemical and Environmental Engineering, Yale University PO Box 208286 New Haven CT 06510-8286 USA
| | - Haiyan Tan
- CAMMA Laboratory, Institute of Materials Science, University of Connecticut PO Box 06269 Storrs CT USA
| | - Min Li
- Materials Characterization Core Yale West Campus West Haven CT 06516 USA
| | - Lisa D Pfefferle
- Department of Chemical and Environmental Engineering, Yale University PO Box 208286 New Haven CT 06510-8286 USA
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8
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Zhou S, Cai X, Zhang Y, Chen Q, Yang X, Wang K, Jian L, Liu J. DNA nanotubes in coacervate microdroplets as biomimetic cytoskeletons modulate the liquid fluidic properties of protocells. J Mater Chem B 2022; 10:8322-8329. [PMID: 36168959 DOI: 10.1039/d2tb01451c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coacervate microdroplets, formed via liquid-liquid phase separation, have been proposed as a compartment model for the construction of artificial cells or organelles. However, these microsystems are very fragile and demonstrate liquid-like fluidity. Here, an artificial cytoskeleton based on DNA nanotubes was constructed in coacervate microdroplets to modulate the liquid fluidic properties of the microdroplets. The coacervate microdroplets were obtained from the association of oppositely charged polyelectrolytes through liquid-liquid phase separation, and DNA nanotubes were constructed by molecular tile self-assembly from six clip sequences. The DNA nanotubes were efficiently sequestered in the liquid coacervate microdroplets, and the rigid structure of the DNA nanotubes was capable of modulating the liquid fluidic properties of the coacervate protocell models, as indicated by coalescence imaging and atomic force microscopy analysis. Therefore, artificial cytoskeletons made from DNA nanotubes worked in modulating the liquid fluidic properties of coacervate microdroplets, in a manner akin to the cytoskeleton in the cell. DNA cytoskeletons have the potential to become an ideal platform with which how the liquid fluidic properties of cells are modulated by their cytoskeletons can be investigated, and the cell-sized coacervate microdroplets containing artificial cytoskeletons might be critical in developing a stable liquid-phase protocell model.
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Affiliation(s)
- Shaohong Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China.
| | - Xueer Cai
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China.
| | - Yanwen Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China.
| | - Qiaoshu Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China.
| | - Xiaohai Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China.
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China.
| | - Lixin Jian
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China.
| | - Jianbo Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China.
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Gong K, Tian H, Liu H, Liu X, Hu GH, Yu B, Ning N, Tian M, Zhang L. Grafting of Isobutylene–Isoprene Rubber with Glycidyl Methacrylate and Its Reactive Compatibilization Effect on Isobutylene–Isoprene Rubber/Polyamides 12 Blends. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03207] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kangqiang Gong
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hongchi Tian
- Shandong Dawn Polymer Material Company Limited, Longkou 265700, China
| | - Heng Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xueying Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Guo-Hua Hu
- Laboratory of Reactions and Process Engineering (LRGP), CNRS UMR 7274, École Nationale Supérieure des Industries Chimiques, University of Lorraine, Nancy 54001, France
| | - Bing Yu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Nanying Ning
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ming Tian
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Liqun Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
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10
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Collinson DW, Sheridan RJ, Palmeri MJ, Brinson LC. Best practices and recommendations for accurate nanomechanical characterization of heterogeneous polymer systems with atomic force microscopy. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2021.101420] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Ma M, Guo Y. Physical aging of polystyrene blocks under three‐dimensional soft confinement in
PS‐
b
‐
poly(n‐butyl methacrylate) diblock copolymer: Two equilibrations on the way. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20200633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mingchao Ma
- University of Michigan – Shanghai Jiao Tong University Joint Institute Shanghai Jiao Tong University Shanghai China
| | - Yunlong Guo
- University of Michigan – Shanghai Jiao Tong University Joint Institute Shanghai Jiao Tong University Shanghai China
- School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai China
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12
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Ko J, Berger R, Lee H, Yoon H, Cho J, Char K. Electronic effects of nano-confinement in functional organic and inorganic materials for optoelectronics. Chem Soc Rev 2021; 50:3585-3628. [DOI: 10.1039/d0cs01501f] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review provides a comprehensive overview of the electronic effects of nano-confinement (from 1D to 3D geometries) on optoelectronic materials and their applications.
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Affiliation(s)
- Jongkuk Ko
- Department of Chemical and Biological Engineering
- Korea University
- Seoul 02841
- Republic of Korea
- School of Chemical & Biological Engineering
| | - Rüdiger Berger
- Physics at Interfaces
- Max Planck Institute for Polymer Research
- D-55128 Mainz
- Germany
| | - Hyemin Lee
- Department of Chemical & Biomolecular Engineering
- Seoul National University of Science & Technology
- Seoul 01811
- Republic of Korea
| | - Hyunsik Yoon
- Department of Chemical & Biomolecular Engineering
- Seoul National University of Science & Technology
- Seoul 01811
- Republic of Korea
| | - Jinhan Cho
- Department of Chemical and Biological Engineering
- Korea University
- Seoul 02841
- Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology
| | - Kookheon Char
- School of Chemical & Biological Engineering
- Seoul National University
- Seoul 08826
- Republic of Korea
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13
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Monitoring the surface aging of wood through its pits using atomic force microscopy with functionalized tips. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125871] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Ovchinnikov IS, Vishnevskiy AS, Seregin DS, Rezvanov AA, Schneider D, Sigov AS, Vorotilov KA, Baklanov MR. Evaluation of Mechanical Properties of Porous OSG Films by PFQNM AFM and Benchmarking with Traditional Instrumentation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9377-9387. [PMID: 32709205 DOI: 10.1021/acs.langmuir.0c01054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Characterization of mechanical properties of thin porous films with nanoscale resolution remains a challenge for instrumentation science. In this work, atomic force microscopy (AFM) in the PeakForce quantitative nanomechanical mapping (PFQNM) mode is used for Young's modulus measurements of porous organosilicate glass films. The test samples were prepared by sol-gel techniques using silicon alkoxide and methyl-modified silicon alkoxide to prepare films with different CH3/Si ratios. The film porosity was engineered by using a Brij 30 template and the evaporation-induced self-assembly technique. The chemical composition, pore structure, and modification during air storage and thermal annealing were studied using FTIR spectroscopy and ellipsometric porosimetry (EP). Since PFQNM AFM was first used for evaluation of Young's modulus of thin porous films, the obtained results are benchmarked using nanoindentation (NI), surface acoustic wave (SAW) spectroscopy, and EP. The results have good agreement with each other, but PFQNM and NI give slightly larger values than SAW and EP. The difference is in agreement with previously reported data and reflects the different physical meaning of the obtained values. It is shown that the presence of physically adsorbed water strongly influences the results generated by PFQNM AFM, and therefore, reliable water removal from the studied materials is necessary.
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Affiliation(s)
- I S Ovchinnikov
- MIREA-Russian Technological University (RTU MIREA), Vernadsky Avenue 78, Moscow 119454, Russian Federation
| | - A S Vishnevskiy
- MIREA-Russian Technological University (RTU MIREA), Vernadsky Avenue 78, Moscow 119454, Russian Federation
| | - D S Seregin
- MIREA-Russian Technological University (RTU MIREA), Vernadsky Avenue 78, Moscow 119454, Russian Federation
| | - A A Rezvanov
- Moscow Institute of Physics and Technology (MIPT), 9 Institutskiy per., Dolgoprudny, Moscow Region 141700, Russian Federation
- Molecular Electronics Research Institute (MERI), 1st Zapadny Proezd 12/1, Zelenograd, Moscow 124460, Russian Federation
| | - D Schneider
- Fraunhofer-Institute for Material and Beam Technology, Winterbergstrasse 28, Dresden D-01277, Germany
| | - A S Sigov
- MIREA-Russian Technological University (RTU MIREA), Vernadsky Avenue 78, Moscow 119454, Russian Federation
| | - K A Vorotilov
- MIREA-Russian Technological University (RTU MIREA), Vernadsky Avenue 78, Moscow 119454, Russian Federation
| | - M R Baklanov
- MIREA-Russian Technological University (RTU MIREA), Vernadsky Avenue 78, Moscow 119454, Russian Federation
- North China University of Technology (NCUT), No. 5 Jinyuanzhuang Road, Shijingshan, Beijing 100144, China
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15
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Chen PY, Hung HL, Han CC, Chiu HC. Correlation between Nanoscale Elasticity, Semiconductivity, and Structural Order in Functionalized Polyaniline Thin Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4153-4164. [PMID: 32216355 DOI: 10.1021/acs.langmuir.0c00100] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The correlation between structural order, elasticity, and semiconductivity for butylthio-functionalized polyaniline (PANI-SBu) thin films was investigated using atomic force microscopy (AFM)-based techniques with X-ray diffraction (XRD) and scanning electron microscopy (SEM). After different stirring times, the thin films were cast from the solution of PANI-SBu in N-methyl-2-pyrrolidone that was continuously stirred at a constant rate of 150 rpm in an airtight round-bottom flask. According to the XRD and SEM results, the cross-sectional film structure evolved from being generally holey to highly lamellar with an increase in the stirring time. However, some new types of disordered structures began emerging beyond the optimal stirring time, possibly caused by the formation of disordered packing structures as contributed from the overoxidized polyaniline backbones during the additional stirring time. Moreover, according to the investigation results obtained using AFM-based techniques, the out-of-plane elastic moduli and charge mobilities of the PANI-SBu films were consistently smaller for disordered thin films and larger for structurally more ordered ones. The shear force resulting from the mechanical stirring of the PANI-SBu solution may gradually disentangle the polymer chains and thus help transform the individual polyaniline molecule from a coil-like chain conformation to a better extended rodlike chain conformation. Therefore, when cast into a film, the stretched polymer chains facilitate self-organization among the PANI-SBu backbones during the film formation process. Thus, an improved structural order in the film is attained. Our results demonstrate an unambiguous correlation between the structure order, elasticity, and conductivity in PANI-SBu thin films, which may have useful applications in conducting polymer-based flexible electronics.
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Affiliation(s)
- Po-Yen Chen
- Department of Physics, National Taiwan Normal University, Taipei, Taiwan 106, Republic of China
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 300, Republic of China
| | - Hua-Li Hung
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 300, Republic of China
| | - Chien-Chung Han
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 300, Republic of China
| | - Hsiang-Chih Chiu
- Department of Physics, National Taiwan Normal University, Taipei, Taiwan 106, Republic of China
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16
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Ma MC, Guo YL. Physical Properties of Polymers Under Soft and Hard Nanoconfinement: A Review. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2380-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Rhee D, Paci JT, Deng S, Lee WK, Schatz GC, Odom TW. Soft Skin Layers Enable Area-Specific, Multiscale Graphene Wrinkles with Switchable Orientations. ACS NANO 2020; 14:166-174. [PMID: 31675210 DOI: 10.1021/acsnano.9b06325] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This paper reports a method to realize crack-free graphene wrinkles with variable spatial wavelengths and switchable orientations. Graphene supported on a thin fluoropolymer and prestrained elastomer substrate can exhibit conformal wrinkling after strain relief. The wrinkle orientation could be switched beyond the intrinsic fracture limit of graphene for hundreds of cycles of stretching and releasing without forming cracks. Mechanical modeling revealed that the fluoropolymer layer mediated the structural evolution of the graphene wrinkles without crack formation or delamination. Patterned fluoropolymer layers with different thicknesses produced wrinkles with controlled wavelengths and orientations while maintaining the mechanical integrity of graphene under high tensile strain.
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Affiliation(s)
| | - Jeffrey T Paci
- Department of Chemistry , University of Victoria , Victoria , British Columbia V8P 5C2 , Canada
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18
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Collinson DW, Eaton MD, Shull KR, Brinson LC. Deconvolution of Stress Interaction Effects from Atomic Force Spectroscopy Data across Polymer−Particle Interfaces. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01378] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | | | | | - L. Catherine Brinson
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
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19
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Tung WT, Wang W, Liu Y, Gould OEC, Kratz K, Ma N, Lendlein A. Mechanical characterization of electrospun polyesteretherurethane (PEEU) meshes by atomic force microscopy. Clin Hemorheol Microcirc 2019; 73:229-236. [PMID: 31561331 DOI: 10.3233/ch-199201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The mechanical properties of electrospun fiber meshes typically are measured by tensile testing at the macro-scale without precisely addressing the spatial scale of living cells and their submicron architecture. Atomic force microscopy (AFM) enables the examination of the nano- and micro-mechanical properties of the fibers with potential to correlate the structural mechanical properties across length scales with composition and functional behavior. In this study, a polyesteretherurethane (PEEU) polymer containing poly(p-dioxanone) (PPDO) and poly(ɛ-caprolactone) (PCL) segments was electrospun into fiber meshes or suspended single fibers. We employed AFM three point bending testing and AFM force mapping to measure the elastic modulus and stiffness of individual micro/nanofibers and the fiber mesh. The local stiffness of the fiber mesh including the randomized, intersecting structure was also examined for each individual fiber. Force mapping results with a set point of 50 nN demonstrated the dependence of the elasticity of a single fiber on the fiber mesh architecture. The non-homogeneous stiffness along the same fiber was attributed to the intersecting structure of the supporting mesh morphology. The same fiber measured at a point with and without axial fiber support showed a remarkable difference in stiffness, ranging from 0.2 to 10 nN/nm respectively. For the region, where supporting fibers densely intersected, the stiffness was found to be considerably higher. In the region where the degrees of freedom of the fibers was not restricted, allowing greater displacement, the stiffness were observed to be lower. This study elucidates the relationship between architecture and the mechanical properties of a micro/nanofiber mesh. By providing a greater understanding of the role of spatial arrangement and organization on the surface mechanical properties of such materials, we hope to provide insight into the design of microenvironments capable of regulating cell functionality.
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Affiliation(s)
- Wing Tai Tung
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Chemistry, University of Potsdam, Potsdam, Germany
| | - Weiwei Wang
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Yue Liu
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Oliver E C Gould
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Karl Kratz
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Nan Ma
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Chemistry and Biochemistry, Free University of Berlin, Berlin, Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Chemistry, University of Potsdam, Potsdam, Germany.,Institute of Chemistry and Biochemistry, Free University of Berlin, Berlin, Germany
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20
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Xia W, Lan T. Interfacial Dynamics Governs the Mechanical Properties of Glassy Polymer Thin Films. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01235] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wenjie Xia
- Department of Civil & Environmental Engineering, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Tian Lan
- Formulation, Automation & Materials Science, Core R&D, The Dow Chemical Company, 400 Arcola Rd., Collegeville, Pennsylvania 19426, United States
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21
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Obiakara C, Liao CK, Mahmoud MA. Mechanical Exfoliation Assisted by Molecular Tweezers for Production of Sulfur-Based Semiconducting Two-Dimensional Materials. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Li J, Lu Y, Jin Z, Zhang L. Influence of interfacial compatibilizer, silane modification, and filler hybrid on the performance of NR/NBR blends. J Appl Polym Sci 2019. [DOI: 10.1002/app.47421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jingchao Li
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Yonglai Lu
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials; Beijing University of Chemical Technology; Beijing 100029 China
- Engineering Research Center of Elastomer Materials Energy Conservation and Resources, Ministry of Education; Beijing University of Chemical Technology; Beijing 100029 China
| | - Zhenhuan Jin
- Zhongce Rubber Group Co., Ltd.; Hangzhou 310018 China
| | - Liqun Zhang
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials; Beijing University of Chemical Technology; Beijing 100029 China
- Engineering Research Center of Elastomer Materials Energy Conservation and Resources, Ministry of Education; Beijing University of Chemical Technology; Beijing 100029 China
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23
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Song J, Kahraman R, Collinson DW, Xia W, Brinson LC, Keten S. Temperature effects on the nanoindentation characterization of stiffness gradients in confined polymers. SOFT MATTER 2019; 15:359-370. [PMID: 30421764 DOI: 10.1039/c8sm01539b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The stiffening of polymers near inorganic fillers plays an important role in strengthening polymer nanocomposites, and recent advances in metrology have allowed us to sample such effects using local mechanical measurement techniques such as nanoindentation and atomic force microscopy. A general understanding of temperature and confinement effects on the measured stiffness gradient length-scale ξint is lacking however, which convolutes molecular interpretation of local property measurements. Using coarse-grained molecular dynamics and finite element nanoindentation simulations, we show that the measured ξint increases with temperature in highly confined polymer systems, a dependence which acts in the opposite direction in systems with low confinement. These disparate trends are closely related to the polymer's viscoelastic state and the resulting changes in incompressibility and dissipative ability as the polymer transitions from glassy to rubbery. At high temperatures above the glass transition temperature, a geometrically confined system restricts the viscous dissipation of the applied load by the increasingly incompressible polymer. The indentation causes a dramatic build-up of hydrostatic pressure near the confining surface, which contributes to an enlarged measurement of ξint. By contrast, a less-confined system allows the pressure to dissipate via intermolecular motion, thus lowering the measured ξint with increased temperature above the glass transition temperature. These findings suggest that the well-established thin film-nancomposite analogy for polymer mobility near interfaces can be convoluted when measuring local mechanical properties, as the viscoelastic state and geometric confinement of the polymer can affect the nanomechanical response during indentation purely from continuum effects.
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Affiliation(s)
- Jake Song
- Dept. of Materials Science & Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3109, USA
| | - Rıdvan Kahraman
- Dept. of Materials Science & Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3109, USA
| | - David W Collinson
- Dept. of Mechanical Engineering and Materials Science, Duke University, 144 Hudson Hall, Durham, NC 27708, USA. and Dept. of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3109, USA.
| | - Wenjie Xia
- Department of Civil & Environmental Engineering, North Dakota State University, Fargo, ND 58108, USA
| | - L Catherine Brinson
- Dept. of Mechanical Engineering and Materials Science, Duke University, 144 Hudson Hall, Durham, NC 27708, USA. and Center for Hierarchical Materials Design, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3109, USA
| | - Sinan Keten
- Dept. of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3109, USA. and Dept. of Civil & Environmental Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3109, USA and Center for Hierarchical Materials Design, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3109, USA
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24
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Trazkovich AJ, Wendt MF, Hall LM. Effect of Copolymer Sequence on Local Viscoelastic Properties near a Nanoparticle. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02136] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Alex J. Trazkovich
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 W 19th Ave., Columbus, Ohio 43210, United States
- Cooper Tire & Rubber Company, 701 Lima Ave., Findlay, Ohio 45840, United States
| | - Mitchell F. Wendt
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 W 19th Ave., Columbus, Ohio 43210, United States
| | - Lisa M. Hall
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 W 19th Ave., Columbus, Ohio 43210, United States
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25
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Jhou YW, Yang CK, Sie SY, Chiu HC, Tsay JS. Variations of the elastic modulus perpendicular to the surface of rubrene bilayer films. Phys Chem Chem Phys 2019; 21:4939-4946. [DOI: 10.1039/c8cp07062h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We propose a structural bilayer model successfully explaining the layered nature or characteristics of rubrene films.
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Affiliation(s)
- Yen-Wei Jhou
- Department of Physics
- National Taiwan Normal University
- Taipei 116
- Taiwan
| | - Chun-Kai Yang
- Department of Physics
- National Taiwan Normal University
- Taipei 116
- Taiwan
| | - Siang-Yu Sie
- Department of Physics
- National Taiwan Normal University
- Taipei 116
- Taiwan
| | - Hsiang-Chih Chiu
- Department of Physics
- National Taiwan Normal University
- Taipei 116
- Taiwan
| | - Jyh-Shen Tsay
- Department of Physics
- National Taiwan Normal University
- Taipei 116
- Taiwan
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26
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Kolluru PV, Eaton MD, Collinson DW, Cheng X, Delgado DE, Shull KR, Brinson LC. AFM-based Dynamic Scanning Indentation (DSI) Method for Fast, High-resolution Spatial Mapping of Local Viscoelastic Properties in Soft Materials. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01426] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Pavan V. Kolluru
- Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Matthew D. Eaton
- Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - David W. Collinson
- Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Xu Cheng
- Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - David E. Delgado
- Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Kenneth R. Shull
- Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - L. Catherine Brinson
- Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
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27
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Zhang M, Li Y, Kolluru PV, Brinson LC. Determination of Mechanical Properties of Polymer Interphase Using Combined Atomic Force Microscope (AFM) Experiments and Finite Element Simulations. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01427] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
| | | | | | - L. Catherine Brinson
- Mechanical Engineering & Material Science, Duke University, Durham, North Carolina 27708, United States
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28
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Genix AC, Bocharova V, Kisliuk A, Carroll B, Zhao S, Oberdisse J, Sokolov AP. Enhancing the Mechanical Properties of Glassy Nanocomposites by Tuning Polymer Molecular Weight. ACS APPLIED MATERIALS & INTERFACES 2018; 10:33601-33610. [PMID: 30203957 DOI: 10.1021/acsami.8b13109] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The addition of nanoparticles to a polymer matrix is a well-known process to improve the mechanical properties of polymers. Many studies of mechanical reinforcement in polymer nanocomposites (PNCs) focus on rubbery matrices; however, much less effort concentrates on the factors controlling the mechanical performance of the technologically important glassy PNCs. This paper presents a study of the effect of the polymer molecular weight (MW) on the overall mechanical properties of glassy PNCs with attractive interaction by using Brillouin light scattering. We found that the mechanical moduli (bulk and shear) have a nonmonotonic dependence on MW that cannot be predicted by simple rule of mixtures. The moduli increase with increasing MW up to 100 kg/mol followed by a drop at higher MW. We demonstrate that the change in the mechanical properties of PNCs can be associated with the properties of the interfacial polymer layer. The latter depend on the interfacial chain packing and stretching, as well as polymer bridging, which vary differently with the MW of the polymer. These competing contributions lead to the observed nonmonotonic variations of the glassy PNC moduli with MW. Our work provides a simple, cost-effective, and efficient way to control the mechanical properties of glassy PNCs by tuning the polymer chain length. Our finding can be beneficial for the rational design of PNCs with desired mechanical performance.
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Affiliation(s)
- Anne-Caroline Genix
- Chemical Sciences Division , Oak Ridge National Laboratory , Oak Ridge , Tennessee 37831 , United States
- Laboratoire Charles Coulomb (L2C), Université de Montpellier, CNRS , F-34095 Montpellier , France
| | - Vera Bocharova
- Laboratoire Charles Coulomb (L2C), Université de Montpellier, CNRS , F-34095 Montpellier , France
| | - Alexander Kisliuk
- Laboratoire Charles Coulomb (L2C), Université de Montpellier, CNRS , F-34095 Montpellier , France
| | - Bobby Carroll
- Laboratoire Charles Coulomb (L2C), Université de Montpellier, CNRS , F-34095 Montpellier , France
| | - Sheng Zhao
- Department of Chemistry , University of Tennessee , Knoxville , Tennessee 37996 , United States
| | - Julian Oberdisse
- Chemical Sciences Division , Oak Ridge National Laboratory , Oak Ridge , Tennessee 37831 , United States
| | - Alexei P Sokolov
- Laboratoire Charles Coulomb (L2C), Université de Montpellier, CNRS , F-34095 Montpellier , France
- Department of Chemistry , University of Tennessee , Knoxville , Tennessee 37996 , United States
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29
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Three-dimensional brain-like microenvironments facilitate the direct reprogramming of fibroblasts into therapeutic neurons. Nat Biomed Eng 2018; 2:522-539. [DOI: 10.1038/s41551-018-0260-8] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 06/11/2018] [Indexed: 02/07/2023]
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30
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Ning N, Mi T, Chu G, Zhang LQ, Liu L, Tian M, Yu HT, Lu YL. A quantitative approach to study the interface of carbon nanotubes/elastomer nanocomposites. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.03.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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31
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Tamilselvi P, Hema M, Asath Bahadur S. Investigation of Nanocomposite Polymer Electrolytes for Lithium Ion Batteries. POLYMER SCIENCE SERIES A 2018. [DOI: 10.1134/s0965545x18010066] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Vogt BD. Mechanical and viscoelastic properties of confined amorphous polymers. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24529] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Bryan D. Vogt
- Department of Polymer Engineering; University of Akron; Akron Ohio 44325
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33
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Xu J, Liu Z, Lan Y, Zuo B, Wang X, Yang J, Zhang W, Hu W. Mobility Gradient of Poly(ethylene terephthalate) Chains near a Substrate Scaled by the Thickness of the Adsorbed Layer. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00922] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jianquan Xu
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhenshan Liu
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yang Lan
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Biao Zuo
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xinping Wang
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Juping Yang
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Wei Zhang
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Wenbing Hu
- Department
of Polymer Science and Engineering, State Key Lab of Coordination
Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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34
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Shahenoor Basha SK, Sunita Sundari G, Vijay Kumar K, Rao MC. Optical and dielectric properties of PVP based composite polymer electrolyte films. POLYMER SCIENCE SERIES A 2017. [DOI: 10.1134/s0965545x17040095] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Zhang M, Askar S, Torkelson JM, Brinson LC. Stiffness Gradients in Glassy Polymer Model Nanocomposites: Comparisons of Quantitative Characterization by Fluorescence Spectroscopy and Atomic Force Microscopy. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00917] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Min Zhang
- Department
of Materials Science and Engineering, ‡Department of Chemical and Biological
Engineering, and §Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Shadid Askar
- Department
of Materials Science and Engineering, ‡Department of Chemical and Biological
Engineering, and §Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - John M. Torkelson
- Department
of Materials Science and Engineering, ‡Department of Chemical and Biological
Engineering, and §Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - L. Catherine Brinson
- Department
of Materials Science and Engineering, ‡Department of Chemical and Biological
Engineering, and §Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
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36
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Sambale AK, Schöneich M, Stommel M. Influence of the Processing Parameters on the Fiber-Matrix-Interphase in Short Glass Fiber-Reinforced Thermoplastics. Polymers (Basel) 2017; 9:polym9060221. [PMID: 30970898 PMCID: PMC6431849 DOI: 10.3390/polym9060221] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/07/2017] [Accepted: 06/08/2017] [Indexed: 12/04/2022] Open
Abstract
The interphase in short fiber thermoplastic composites is defined as a three-dimensional, several hundred nanometers-wide boundary region at the interface of fibers and the polymer matrix, exhibiting altered mechanical properties. This region is of key importance in the context of fiber-matrix adhesion and the associated mechanical strength of the composite material. An interphase formation is caused by morphological, as well as thermomechanical processes during cooling of the plastic melt close to the glass fibers. In this study, significant injection molding processing parameters are varied in order to investigate the influence on the formation of an interphase and the resulting mechanical properties of the composite. The geometry of the interphase is determined using nano-tribological techniques. In addition, the influence of the glass fiber sizing on the geometry of the interphase is examined. Tensile tests are used in order to determine the resulting mechanical properties of the produced short fiber composites. It is shown that the interphase width depends on the processing conditions and can be linked to the mechanical properties of the short fiber composite.
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Affiliation(s)
- Anna Katharina Sambale
- Chair of Plastics Technology, TU Dortmund University, Leonard-Euler Str. 5, D-44227 Dortmund, Germany.
| | - Marc Schöneich
- Chair of Plastics Technology, TU Dortmund University, Leonard-Euler Str. 5, D-44227 Dortmund, Germany.
| | - Markus Stommel
- Chair of Plastics Technology, TU Dortmund University, Leonard-Euler Str. 5, D-44227 Dortmund, Germany.
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37
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Wang W, Guo Z, Sun J, Li Z. Nano-mechanical characterization of disassembling amyloid fibrils using the Peak Force QNM method. Biopolymers 2017; 107:61-69. [PMID: 27696370 DOI: 10.1002/bip.22992] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/13/2016] [Accepted: 09/28/2016] [Indexed: 12/26/2022]
Abstract
The comprehensive understanding of disassembly mechanism of amyloid fibrils requires nano-scale characterization of the mechanical properties of amyloid fibrils during the disassembly process. In this work, gemini surfactant C12 C6 C12 Br2 micelles were used as a probe to disassemble Aβ(1-40) fibrils. The microstructure evolution and nano-mechanical properties of Aβ(1-40) fibrils during the disassembly process were systematically investigated by the Peak Force Quantitative Nano-mechanical (PF-QNM) technique. The results show an obvious decrease in Young's modulus of mature fibrils with high β-sheet contents (2.4 ± 1.0 GPa) in comparison to the resulting peptide/surfactant complexes (1.1 ± 0.8 GPa) with loose surface structures. Interestingly, the Young's modulus of spherical peptide/surfactant complexes on the core was more than 3 GPa. This strategy can be used as a standard protocol to investigate the interaction mechanism between amyloid fibrils and small molecules, which may open up new possibilities to explore the mechanism of relevant human diseases.
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Affiliation(s)
- Wenpin Wang
- School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Zongxia Guo
- School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Jing Sun
- School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Zhibo Li
- School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
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38
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Huang H, Dobryden I, Ihrner N, Johansson M, Ma H, Pan J, Claesson PM. Temperature-dependent surface nanomechanical properties of a thermoplastic nanocomposite. J Colloid Interface Sci 2017; 494:204-214. [PMID: 28160705 DOI: 10.1016/j.jcis.2017.01.096] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 01/24/2017] [Accepted: 01/24/2017] [Indexed: 11/26/2022]
Abstract
In polymer nanocomposites, particle-polymer interactions influence the properties of the matrix polymer next to the particle surface, providing different physicochemical properties than in the bulk matrix. This region is often referred to as the interphase, but detailed characterization of its properties remains a challenge. Here we employ two atomic force microscopy (AFM) force methods, differing by a factor of about 15 in probing rate, to directly measure the surface nanomechanical properties of the transition region between filler particle and matrix over a controlled temperature range. The nanocomposite consists of poly(ethyl methacrylate) (PEMA) and poly(isobutyl methacrylate) (PiBMA) with a high concentration of hydrophobized silica nanoparticles. Both AFM methods demonstrate that the interphase region around a 40-nm-sized particle located on the surface of the nanocomposite could extend to 55-70nm, and the interphase exhibits a gradient distribution in surface nanomechanical properties. However, the slower probing rate provides somewhat lower numerical values for the surface stiffness. The analysis of the local glass transition temperature (Tg) of the interphase and the polymer matrix provides evidence for reduced stiffness of the polymer matrix at high particle concentration, a feature that we attribute to selective adsorption. These findings provide new insight into understanding the microstructure and mechanical properties of nanocomposites, which is of importance for designing nanomaterials.
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Affiliation(s)
- Hui Huang
- Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China; KTH Royal Institute of Technology, School of Chemical Sciences and Engineering, Department of Chemistry, Surface and Corrosion Science, Drottning Kristinas väg 51, SE-10044 Stockholm, Sweden.
| | - Illia Dobryden
- KTH Royal Institute of Technology, School of Chemical Sciences and Engineering, Department of Chemistry, Surface and Corrosion Science, Drottning Kristinas väg 51, SE-10044 Stockholm, Sweden
| | - Niklas Ihrner
- KTH Royal Institute of Technology, Department of Fiber and Polymer Technology, Teknikringen 56-58, SE-10044 Stockholm, Sweden
| | - Mats Johansson
- KTH Royal Institute of Technology, Department of Fiber and Polymer Technology, Teknikringen 56-58, SE-10044 Stockholm, Sweden
| | - Houyi Ma
- Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Jinshan Pan
- KTH Royal Institute of Technology, School of Chemical Sciences and Engineering, Department of Chemistry, Surface and Corrosion Science, Drottning Kristinas väg 51, SE-10044 Stockholm, Sweden
| | - Per M Claesson
- KTH Royal Institute of Technology, School of Chemical Sciences and Engineering, Department of Chemistry, Surface and Corrosion Science, Drottning Kristinas väg 51, SE-10044 Stockholm, Sweden; SP Technical Research Institute of Sweden, SP Chemistry, Materials and Surfaces, Box 5607, SE-11486 Stockholm, Sweden.
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39
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Guo Y, Liu J, Wu Y, Zhang L, Wang Z, Li Y. Molecular insights into the effect of graphene packing on mechanical behaviors of graphene reinforced cis-1,4-polybutadiene polymer nanocomposites. Phys Chem Chem Phys 2017; 19:22417-22433. [DOI: 10.1039/c7cp02945d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We adopt molecular dynamics simulation to study the graphene packing patterns on chain structure, dynamics, uniaxial tension and visco-elastic behaviors.
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Affiliation(s)
- Yishuo Guo
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials
- Beijing University of Chemical Technology
- People's Republic of China
| | - Jun Liu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials
- Beijing University of Chemical Technology
- People's Republic of China
- Engineering Research Center of Elastomer Materials on Energy Conservation and Resources of Ministry of Education
- Beijing University of Chemical Technology
| | - Youping Wu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials
- Beijing University of Chemical Technology
- People's Republic of China
- Engineering Research Center of Elastomer Materials on Energy Conservation and Resources of Ministry of Education
- Beijing University of Chemical Technology
| | - Liqun Zhang
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials
- Beijing University of Chemical Technology
- People's Republic of China
- Engineering Research Center of Elastomer Materials on Energy Conservation and Resources of Ministry of Education
- Beijing University of Chemical Technology
| | - Zhao Wang
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials
- Beijing University of Chemical Technology
- People's Republic of China
- Engineering Research Center of Elastomer Materials on Energy Conservation and Resources of Ministry of Education
- Beijing University of Chemical Technology
| | - Ying Li
- Department of Mechanical Engineering and Institute of Materials Science
- University of Connecticut
- Storrs
- USA
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40
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Woodcock JW, Beams R, Davis CS, Chen N, Stranick SJ, Shah DU, Vollrath F, Gilman JW. Observation of interfacial damage in a silk-epoxy composite, using a simple mechanoresponsive fluorescent probe. ADVANCED MATERIALS INTERFACES 2017; 4:10.1002/admi.201601018. [PMID: 34194923 PMCID: PMC8240949 DOI: 10.1002/admi.201601018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Polymer composite materials are found throughout the world both natural and artificial in origin. In the vast majority of applications in these arenas, composites serve as structural support or reinforcement. Demand for lightweight tough composites is growing in multiple application spaces such as aerospace, biomaterials, and infrastructure with physical properties as diverse as the applications. The unifying component in all composites is the presence of the interphase. Many measurement techniques and measurement tools have been developed for the study of this crucial region in composite materials. Many of these methods are great for the measurement and study of bulk properties or model systems. However, development of tools that permit the direct observation of interactions at the interphase during applied stress are needed. Here we employ fluorescence lifetime imaging and hyperspectral imaging to observe activation of a fluorogenic dye at the composite interface as a result of applied stress. The advantages of this system include commercial availability of the dye precursor, and simple one-pot functionalization. The attachment of the dye at the interface is easily monitored through emission wavelength shifts or fluorescence lifetime. Interfacial mechano-responsive dyes have potential for both fundamental studies as well as industrial use as a structural health monitoring tool.
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Affiliation(s)
- Jeremiah W. Woodcock
- Materials Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland, USA
| | - Ryan Beams
- Materials Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland, USA
| | - Chelsea S. Davis
- Materials Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland, USA
| | - Ning Chen
- Materials Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland, USA
| | - Stephan J. Stranick
- Materials Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland, USA
| | - Darshil U. Shah
- Oxford Silk Group, Zoology Department, Oxford University, Oxford, United Kingdom
| | - Fritz Vollrath
- Oxford Silk Group, Zoology Department, Oxford University, Oxford, United Kingdom
| | - Jeffrey W. Gilman
- Materials Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland, USA
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41
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Stiffness of thin, supported polystyrene films: Free-surface, substrate, and confinement effects characterized via self-referencing fluorescence. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.07.042] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Brune PF, Blackman GS, Diehl T, Meth JS, Brill D, Tao Y, Thornton J. Direct Measurement of Rubber Interphase Stiffness. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00689] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Philip F. Brune
- DuPont Engineering Research & Technology and DuPont Central Research and Development, E.I. DuPont de Nemours & Co., Inc., Wilmington, Delaware 19805, United States
| | - Gregory S. Blackman
- DuPont Engineering Research & Technology and DuPont Central Research and Development, E.I. DuPont de Nemours & Co., Inc., Wilmington, Delaware 19805, United States
| | - Ted Diehl
- DuPont Engineering Research & Technology and DuPont Central Research and Development, E.I. DuPont de Nemours & Co., Inc., Wilmington, Delaware 19805, United States
| | - Jeffrey S. Meth
- DuPont Engineering Research & Technology and DuPont Central Research and Development, E.I. DuPont de Nemours & Co., Inc., Wilmington, Delaware 19805, United States
| | - Don Brill
- DuPont Engineering Research & Technology and DuPont Central Research and Development, E.I. DuPont de Nemours & Co., Inc., Wilmington, Delaware 19805, United States
| | - Yuefei Tao
- DuPont Engineering Research & Technology and DuPont Central Research and Development, E.I. DuPont de Nemours & Co., Inc., Wilmington, Delaware 19805, United States
| | - John Thornton
- Bruker
Nano Surfaces, Bruker Corporation, Billerica, Massachusetts 01821, United States
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43
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Girard A, Gehan H, Crut A, Mermet A, Saviot L, Margueritat J. Mechanical Coupling in Gold Nanoparticles Supermolecules Revealed by Plasmon-Enhanced Ultralow Frequency Raman Spectroscopy. NANO LETTERS 2016; 16:3843-9. [PMID: 27176093 DOI: 10.1021/acs.nanolett.6b01314] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Acoustic vibrations of assemblies of gold nanoparticles were investigated using ultralow frequency micro-Raman scattering and finite element simulations. When exciting the assemblies resonantly with the surface plasmon resonance of electromagnetically coupled nanoparticles, Raman spectra present an ultralow frequency band whose frequency lies below the lowest Raman active Lamb mode of single nanoparticles that was observed. This feature was ascribed to a Raman vibration mode of gold nanoparticle "supermolecules", that is, nanoparticles mechanically coupled by surrounding polymer molecules. Its measured frequency is inversely proportional to the nanoparticle diameter and sensitive to the elastic properties of the interstitial polymer. The latter dependence as well as finite element simulations suggest that this mode corresponds to the out-of-phase semirigid translation (l = 1 Lamb mode) of each nanoparticle of a dimer inside the matrix, activated by the mechanical coupling between the nanoparticles. These observations were permitted only thanks to the resonant excitation with the coupling plasmon excitation, leading to an enhancement up to 10(4) of the scattering by these vibrations. This enhanced ultralow frequency Raman scattering thus opens a new route to probe the local elastic properties of the surrounding medium.
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Affiliation(s)
- A Girard
- Institut Lumière Matière, Université de Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5306 , 69622 Villeurbanne, France
| | - H Gehan
- Institut Lumière Matière, Université de Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5306 , 69622 Villeurbanne, France
| | - A Crut
- Institut Lumière Matière, Université de Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5306 , 69622 Villeurbanne, France
| | - A Mermet
- Institut Lumière Matière, Université de Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5306 , 69622 Villeurbanne, France
| | - L Saviot
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Université de Bourgogne Franche Comté , 9 Avenue A. Savary, BP 47 870, F-21078 Dijon Cedex, France
| | - J Margueritat
- Institut Lumière Matière, Université de Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5306 , 69622 Villeurbanne, France
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44
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Xia W, Song J, Hsu DD, Keten S. Understanding the Interfacial Mechanical Response of Nanoscale Polymer Thin Films via Nanoindentation. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00121] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Wenjie Xia
- Department of Civil & Environmental Engineering, ‡Department of Materials Science & Engineering, and §Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3109, United States
| | - Jake Song
- Department of Civil & Environmental Engineering, ‡Department of Materials Science & Engineering, and §Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3109, United States
| | - David D. Hsu
- Department of Civil & Environmental Engineering, ‡Department of Materials Science & Engineering, and §Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3109, United States
| | - Sinan Keten
- Department of Civil & Environmental Engineering, ‡Department of Materials Science & Engineering, and §Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3109, United States
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45
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CH-π Interaction Driven Macroscopic Property Transition on Smart Polymer Surface. Sci Rep 2015; 5:15742. [PMID: 26510671 PMCID: PMC4625179 DOI: 10.1038/srep15742] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 09/30/2015] [Indexed: 12/22/2022] Open
Abstract
Life systems have evolved to utilize weak noncovalent interactions, particularly CH-π interaction, to achieve various biofunctions, for example cellular communication, immune response, and protein folding. However, for artificial materials, it remains a great challenge to recognize such weak interaction, further transform it into tunable macroscopic properties and realize special functions. Here we integrate monosaccharide-based CH-π receptor capable of recognizing aromatic peptides into a smart polymer with three-component "Recognition-Mediating-Function" design, and report the CH-π interaction driven surface property switching on smart polymer film, including wettability, adhesion, viscoelasticity and stiffness. Detailed studies indicate that, the CH-π interaction induces the complexation between saccharide unit and aromatic peptide, which breaks the initial amphiphilic balance of the polymer network, resulting in contraction-swelling conformational transition for polymer chains and subsequent dramatic switching in surface properties. This work not only presents a new approach to control the surface property of materials, but also points to a broader research prospect on CH-π interaction at a macroscopic level.
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46
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Residual stress relaxation and stiffness in spin-coated polymer films: Characterization by ellipsometry and fluorescence. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.08.036] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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Wood CD, Chen L, Burkhart C, Putz KW, Torkelson JM, Brinson LC. Measuring interphase stiffening effects in styrene-based polymeric thin films. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.08.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Chung PC, Green PF. The Elastic Mechanical Response of Nanoscale Thin Films of Miscible Polymer/Polymer Blends. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00392] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter C. Chung
- Department
of Materials Science
and Engineering, Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Peter F. Green
- Department
of Materials Science
and Engineering, Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
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