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Guo M, Zhao Z, Xie Z, Wu W, Wu W, Gao Q. Role of the Branched PEG- b-PLLA Block Chain in Stereocomplex Crystallization and Crystallization Kinetics for PDLA/MPEG- b-PLLA- g-glucose Blends with Different Architectures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15866-15879. [PMID: 36469019 DOI: 10.1021/acs.langmuir.2c02867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The isothermal crystallization behavior and corresponding morphology evolution of poly(d-lactic acid) (PDLA) blends with PLLA6.7k or MPEG-b-PLLA6.7k-g-glucose with different architectures and different PLLA-grafted copolymer contents were investigated. The formation of stereocomplexes (SCs) in between the chain branched structure of MPEG-b-PLLA6.7k-g-glucose and PDLA chains acting as the physical crosslinking points slows down the motion of PDLA chains, but the SCs could act as a heterogeneous nucleating agent for the late formation of homocrystals (HCs) in the blend system, accelerating the crystallization kinetics of HCs through enhancing the nucleation density. For PDLA/MPEG-b-PLLA6.7k-g-glucose blends, the mobility of SCs in the blend system and the nucleation density of SCs in the blends exhibit oppositional behavior during the isothermal crystallization at a Tc of 130 °C. The evolution of the crystal growth and structure during the isothermal crystallization process by rheometry has revealed the interesting role of the branched chains of MPEG-b-PLLA6.7k-g-glucose in the mechanism of the crystallization in PDLA blends.
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Affiliation(s)
- Mingwei Guo
- College of Chemical Engineering, Nanjing Forestry University, Nanjing210037, China
| | - Zhifeng Zhao
- College of Chemical Engineering, Hebei University of Technology, Tianjin300130, China
| | - Zhongyuan Xie
- College of Chemical Engineering, Nanjing Forestry University, Nanjing210037, China
| | - Weixin Wu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing210037, China
| | - Wenjing Wu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing210037, China
| | - Qinwei Gao
- College of Chemical Engineering, Nanjing Forestry University, Nanjing210037, China
- Jiangsu Key Lab for the Chemistry and Utilization of Agricultural and Forest Biomass, Nanjing Forestry University, Nanjing210037, China
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2
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Graphene/Polymer Nanocomposites: Preparation, Mechanical Properties, and Application. Polymers (Basel) 2022; 14:polym14214733. [PMID: 36365726 PMCID: PMC9655120 DOI: 10.3390/polym14214733] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/02/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022] Open
Abstract
Although polymers are very important and vastly used materials, their physical properties are limited. Therefore, they are reinforced with fillers to relieve diverse restrictions and expand their application areas. The exceptional properties of graphene make it an interesting material with huge potential for application in various industries and devices. The interfacial interaction between graphene and the polymer matrix improved the uniform graphene dispersion in the polymer matrix, enhancing the general nanocomposite performance. Therefore, graphene functionalization is essential to enhance the interfacial interaction, maintain excellent properties, and obstruct graphene agglomeration. Many studies have reported that graphene/polymer nanocomposites have exceptional properties that enable diverse applications. The use of graphene/polymer nanocomposites is expected to increase sustainably and to transform from a basic to an advanced material to offer optimum solutions to industry and consumers.
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Graphene-Based Nanocomposites: Synthesis, Mechanical Properties, and Characterizations. Polymers (Basel) 2021; 13:polym13172869. [PMID: 34502909 PMCID: PMC8434110 DOI: 10.3390/polym13172869] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/11/2021] [Accepted: 08/17/2021] [Indexed: 01/21/2023] Open
Abstract
Graphene-based nanocomposites possess excellent mechanical, electrical, thermal, optical, and chemical properties. These materials have potential applications in high-performance transistors, biomedical systems, sensors, and solar cells. This paper presents a critical review of the recent developments in graphene-based nanocomposite research, exploring synthesis methods, characterizations, mechanical properties, and thermal properties. Emphasis is placed on characterization techniques and mechanical properties with detailed examples from recent literature. The importance of characterization techniques including Raman spectroscopy, X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM) for the characterization of graphene flakes and their composites were thoroughly discussed. Finally, the effect of graphene even at very low loadings on the mechanical properties of the composite matrix was extensively reviewed.
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Gaska K, Manika GC, Gkourmpis T, Tranchida D, Gitsas A, Kádár R. Mechanical Behavior of Melt-Mixed 3D Hierarchical Graphene/Polypropylene Nanocomposites. Polymers (Basel) 2020; 12:E1309. [PMID: 32521812 PMCID: PMC7361869 DOI: 10.3390/polym12061309] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/02/2020] [Accepted: 06/05/2020] [Indexed: 11/16/2022] Open
Abstract
The mechanical properties of novel low percolation melt-mixed 3D hierarchical graphene/polypropylene nanocomposites are analyzed in this study. The analysis spans a broad range of techniques and time scales, from impact to tensile, dynamic mechanical behavior, and creep. The applicability of the time-temperature superposition principle and its limitations in the construction of the master curve for the isotactic polypropylene (iPP)-based graphene nanocomposites has been verified and presented. The Williams-Landel-Ferry method has been used to evaluate the dynamics and also Cole-Cole curves were presented to verify the thermorheological character of the nanocomposites. Short term (quasi-static) tensile tests, creep, and impact strength measurements were used to evaluate the load transfer efficiency. A significant increase of Young's modulus with increasing filler content indicates reasonably good dispersion and adhesion between the iPP and the filler. The Young's modulus results were compared with predicted modulus values using Halpin-Tsai model. An increase in brittleness resulting in lower impact strength values has also been recorded.
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Affiliation(s)
- Karolina Gaska
- Department of Industrial and Materials Science, Division of Engineering Materials, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden; (G.C.M.); (R.K.)
| | - Georgia C. Manika
- Department of Industrial and Materials Science, Division of Engineering Materials, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden; (G.C.M.); (R.K.)
| | - Thomas Gkourmpis
- Innovation & Technology, Borealis AB, SE-444 86 Stenungsund, Sweden;
| | - Davide Tranchida
- Innovation & Technology, Borealis Polyolefine GmbH, St.-Peter-Straße 25, 4021 Linz, Austria; (D.T.); (A.G.)
| | - Antonis Gitsas
- Innovation & Technology, Borealis Polyolefine GmbH, St.-Peter-Straße 25, 4021 Linz, Austria; (D.T.); (A.G.)
| | - Roland Kádár
- Department of Industrial and Materials Science, Division of Engineering Materials, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden; (G.C.M.); (R.K.)
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5
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González DM, Quijada R, Yazdani-Pedram M, Lourenço JP, Ribeiro MR. Preparation of polypropylene-based nanocomposites using nanosized MCM-41 as support andin situpolymerization. POLYM INT 2016. [DOI: 10.1002/pi.5057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Darío M González
- Departamento de Ingeniería Química y Biotecnología, Facultad de Ciencias Físicas y Matemáticas; Universidad de Chile; Beauchef 850 Santiago Chile
| | - Raúl Quijada
- Departamento de Ingeniería Química y Biotecnología, Facultad de Ciencias Físicas y Matemáticas; Universidad de Chile; Beauchef 850 Santiago Chile
| | - Mehrdad Yazdani-Pedram
- Facultad de Ciencias Químicas y Farmacéuticas; Universidad de Chile; Sergio Livigstone Pohlhammer 1007 Santiago Chile
| | - Joao Paulo Lourenço
- Faculdade de Ciências e Tecnologia, CIQA; Universidade do Algarve; Campus de Gambelas, 8005-136 Faro, Portugal e CQE - Centro de Química Estrutural, Instituto Superior Técnico Av. Rovisco pais 1049-001 Lisboa
| | - M Rosario Ribeiro
- Centro de Química Estrutural (CQE) and Department of Chemical Engineering; Instituto Superior Técnico, University of Lisbon; Av. Rovisco Pais, 1049-001 Lisbon Portugal
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Zhang HX, Bae MG, Park JH, Ko EB, Lee DH, Zhang XQ, Yoon KB. Effects of GO oxidation degree on GO/BuMgCl-supported Ti-based Ziegler–Natta catalyst performance and nanocomposite properties. RSC Adv 2016. [DOI: 10.1039/c6ra00141f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effects of GO oxidation degree on catalyst performance were studied. The resultant PE/rGO product exhibited significant increase in mechanical properties of commercial PE due to the well dispersion and good interface adhesion with the PE matrix.
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Affiliation(s)
- He-Xin Zhang
- Department of Polymer Science and Engineering
- Kyungpook National University
- Daegu
- Korea
- Key Lab. of Synthetic Rubber
| | - Min-Gi Bae
- Department of Polymer Science and Engineering
- Kyungpook National University
- Daegu
- Korea
| | - Jae-Hyeong Park
- Department of Polymer Science and Engineering
- Kyungpook National University
- Daegu
- Korea
| | - Eun-Bin Ko
- Department of Polymer Science and Engineering
- Kyungpook National University
- Daegu
- Korea
| | - Dong-Ho Lee
- Department of Polymer Science and Engineering
- Kyungpook National University
- Daegu
- Korea
| | - Xue-Quan Zhang
- Key Lab. of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academic of Science
- Changchun
- China
| | - Keun-Byoung Yoon
- Department of Polymer Science and Engineering
- Kyungpook National University
- Daegu
- Korea
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8
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Synthesis, characterization and properties of poly(propylene-1-octene)/graphite nanosheet nanocomposites obtained by in situ polymerization. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.03.069] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Zhou D, Shao J, Li G, Sun J, Bian X, Chen X. Crystallization behavior of PEG/PLLA block copolymers: Effect of the different architectures and molecular weights. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.02.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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Yi M, Cao Y, Ling H, Du Z, Wang L, Yang T, Fan Q, Xie L, Huang W. Temperature dependence of resistive switching behaviors in resistive random access memory based on graphene oxide film. NANOTECHNOLOGY 2014; 25:185202. [PMID: 24739543 DOI: 10.1088/0957-4484/25/18/185202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We reported resistive switching behaviors in the resistive random access memory (RRAM) devices based on the different annealing temperatures of graphene oxide (GO) film as active layers. It was found that the resistive switching characteristics of an indium tin oxide (ITO)/GO/Ag structure have a strong dependence on the annealing temperature of GO film. When the annealing temperature of the GO film was 20 °C, the devices showed typical write-once-read-many-times (WORM) type memory behaviors, which have good memory performance with a higher ON/OFF current ratio (∼10(4)), the higher the high resistance state (HRS)/low resistance state (LRS) ratio (∼10(5)) and stable retention characteristics (>10(3) s) under lower programming voltage (-1 V and -0.5 V). With the increasing annealing temperature of GO film, the resistive switching behavior of RRAM devices gradually weakened and eventually disappeared. This phenomenon could be understood by the different energy level distributions of the charge traps in GO film, and the different charge injection ability from the Ag electrode to GO film, which is caused by the different annealing temperatures of the GO film.
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Affiliation(s)
- Mingdong Yi
- Center for Molecular Systems and Organic Devices (CMSOD), Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts &Telecommunications (NUPT), Nanjing 210 023, People's Republic of China
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11
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Dreyer DR, Todd AD, Bielawski CW. Harnessing the chemistry of graphene oxide. Chem Soc Rev 2014; 43:5288-301. [DOI: 10.1039/c4cs00060a] [Citation(s) in RCA: 610] [Impact Index Per Article: 61.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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12
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Ran S, Guo Z, Han L, Fang Z. Effect of a Lewis Acid Catalyst on the Performance of HDPE/BFR/GNPs Composites. Ind Eng Chem Res 2014. [DOI: 10.1021/ie404302b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Shiya Ran
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Institute of Polymer Composites, Zhejiang University, Hangzhou 310027, People’s Republic of China
- Laboratory
of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, People’s Republic of China
| | - Zhenghong Guo
- Laboratory
of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, People’s Republic of China
| | - Ligang Han
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Institute of Polymer Composites, Zhejiang University, Hangzhou 310027, People’s Republic of China
- Laboratory
of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, People’s Republic of China
| | - Zhengping Fang
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Institute of Polymer Composites, Zhejiang University, Hangzhou 310027, People’s Republic of China
- Laboratory
of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, People’s Republic of China
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13
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Gong J, Feng J, Liu J, Muhammad R, Chen X, Jiang Z, Mijowska E, Wen X, Tang T. Striking Influence about HZSM-5 Content and Nickel Catalyst on Catalytic Carbonization of Polypropylene and Polyethylene into Carbon Nanomaterials. Ind Eng Chem Res 2013. [DOI: 10.1021/ie402178b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jiang Gong
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingdong Feng
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jie Liu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Raheel Muhammad
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xuecheng Chen
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Institute
of Chemical and Environment Engineering, West Pomeranian University of Technology, Szczecinul. Pulaskiego 10, 70-322 Szczecin, Poland
| | - Zhiwei Jiang
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ewa Mijowska
- Institute
of Chemical and Environment Engineering, West Pomeranian University of Technology, Szczecinul. Pulaskiego 10, 70-322 Szczecin, Poland
| | - Xin Wen
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Tao Tang
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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