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Liu Y, Gong W, Liu X, Fan Y, He A, Nie H. Enhancing Thermal Conductivity in Polymer Composites through Molding-Assisted Orientation of Boron Nitride. Polymers (Basel) 2024; 16:1169. [PMID: 38675088 PMCID: PMC11053571 DOI: 10.3390/polym16081169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/15/2024] [Accepted: 04/19/2024] [Indexed: 04/28/2024] Open
Abstract
Incrementing thermal conductivity in polymer composites through the incorporation of inorganic thermally conductive fillers is typically constrained by the requirement of high filler content. This necessity often complicates processing and adversely affects mechanical properties. This study presents the fabrication of a polystyrene (PS)/boron nitride (BN) composite exhibiting elevated thermal conductivity with a modest 10 wt% BN content, achieved through optimized compression molding. Adjustments to molding parameters, including molding-cycle numbers, temperature, and pressure, were explored. The molding process, conducted above the glass transition temperature of PS, facilitated orientational alignment of BN within the PS matrix predominantly in the in-plane direction. This orientation, achieved at low filler loading, resulted in a threefold enhancement of thermal conductivity following a single molding time. Furthermore, the in-plane alignment of BN within the PS matrix was found to intensify with increased molding time and pressure, markedly boosting the in-plane thermal conductivity of the PS/BN molded composites. Within the range of molding parameters examined, the highest thermal conductivity (1.6 W/m·K) was observed in PS/BN composites subjected to five molding cycles at 140 °C and 10 MPa, without compromising mechanical properties. This study suggests that compression molding, which allows low filler content and straightforward operation, offers a viable approach for the mass production of polymer composites with superior thermal conductivity.
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Affiliation(s)
| | | | | | | | - Aihua He
- Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics (Ministry of Education), School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; (Y.L.)
| | - Huarong Nie
- Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics (Ministry of Education), School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; (Y.L.)
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2
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Li T, Jiang W, Tong Y, Jiang W, Yin L, Chen B, Shi Y, Zhang L, Liu H. Thermoelectric Generator Through Dual-Direction Thermal Regulation by Thermal Diodes for Waste Heat Harvesting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304308. [PMID: 37936314 DOI: 10.1002/smll.202304308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/06/2023] [Indexed: 11/09/2023]
Abstract
Thermal energy harvesting provides an opportunity for multi-node systems to achieve self-power autonomy. Thermoelectric generators (TEGs), either by thermocouple arrangement with higher-aspect-ratios or thermoelectric films overlay, are limited by the small temperature difference and its short-duration (less than dozens of minutes), hindering the harvesting efficiency. Here, by introducing thermal diodes with dual-direction thermal regulation ability to optimize the heat flux path, the proposed TEGs exhibit enhanced power-supply capability with unprecedented long-duration (more than hours). In contrast with conventional TEGs with fixed-leg dimensions enabled single output, these compact-TEGs can supply up to fourteen output-channels for selection, the produced power ranges from 1.11 to 921.99 µW, open circuit voltage ranges from 8.07 to 51.32 mV, when the natural temperature difference is 53.84 °C. Compared to the most recent TEGs, the proposed TEGs in this study indicate higher power (more than hundreds times) and much longer output duration (2.4-120 times) in a compact manner.
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Affiliation(s)
- Tian Li
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Weitao Jiang
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
- Shaanxi Joint Key Laboratory of Graphene, Xi'an, 710049, China
- Xi'an Key Laboratory of trans-scale standard measurement, Xi'an, 710049, China
| | - Yufeng Tong
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Wei Jiang
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Lei Yin
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
- Shaanxi Joint Key Laboratory of Graphene, Xi'an, 710049, China
- Xi'an Key Laboratory of trans-scale standard measurement, Xi'an, 710049, China
| | - Bangdao Chen
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yongsheng Shi
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Lei Zhang
- Key Laboratory of Physical Electronics and Devices of Ministry of Education, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Hongzhong Liu
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
- Shaanxi Joint Key Laboratory of Graphene, Xi'an, 710049, China
- Xi'an Key Laboratory of trans-scale standard measurement, Xi'an, 710049, China
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3
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Mojica-Muñoz DM, Macías-Sánchez KL, Juárez-Hernández EO, Rodríguez-Álvarez A, Grévy JM, Díaz-Valle A, Carrillo-Tripp M, Falcón-González JM. Optimizing biodegradable plastics: Molecular dynamics insights into starch plasticization with glycerol and oleic acid. J Mol Graph Model 2024; 126:108674. [PMID: 37984192 DOI: 10.1016/j.jmgm.2023.108674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 11/05/2023] [Accepted: 11/14/2023] [Indexed: 11/22/2023]
Abstract
Petroleum-based plastics dominate everyday life, necessitating the exploration of natural polymers as alternatives. Starch, abundant and biodegradable, is a promising raw material. However, understanding the molecular mechanisms underlying starch plasticization has proven challenging. To address this, we employ molecular dynamics simulations, focusing on amylose as a model. Our comprehensive evaluation revealed that chain size affects solubility, temperature influenced diffusivity and elastic properties, and oleic acid expressed potential as an alternative plasticizer. Furthermore, blending glycerol or oleic acid with water suggested the enhancement amylose's elasticity. These findings contribute to the design of sustainable and improved biodegradable plastics.
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Affiliation(s)
- Diana Margarita Mojica-Muñoz
- Unidad Profesional Interdisciplinaria de Ingeniería Campus Guanajuato, Instituto Politécnico Nacional, Av. Mineral de Valenciana No. 200, Col. Fraccionamiento Industrial Puerto Interior, Silao de la Victoria, 36275, Guanajuato, Mexico
| | - Karla Lizbeth Macías-Sánchez
- Unidad Profesional Interdisciplinaria de Ingeniería Campus Guanajuato, Instituto Politécnico Nacional, Av. Mineral de Valenciana No. 200, Col. Fraccionamiento Industrial Puerto Interior, Silao de la Victoria, 36275, Guanajuato, Mexico
| | - Estefanía Odemaris Juárez-Hernández
- Unidad Profesional Interdisciplinaria de Ingeniería Campus Guanajuato, Instituto Politécnico Nacional, Av. Mineral de Valenciana No. 200, Col. Fraccionamiento Industrial Puerto Interior, Silao de la Victoria, 36275, Guanajuato, Mexico
| | - Aurora Rodríguez-Álvarez
- Centro de Investigaciones Químicas, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Chamilpa, Cuernavaca, 22222, Morelos, Mexico
| | - Jean-Michel Grévy
- Centro de Investigaciones Químicas, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Chamilpa, Cuernavaca, 22222, Morelos, Mexico
| | - Armando Díaz-Valle
- Biomolecular Diversity Laboratory, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional Unidad Monterrey, Vía del Conocimiento 201, PIIT, Apodaca, 66600, Nuevo León, Mexico
| | - Mauricio Carrillo-Tripp
- Biomolecular Diversity Laboratory, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional Unidad Monterrey, Vía del Conocimiento 201, PIIT, Apodaca, 66600, Nuevo León, Mexico
| | - José Marcos Falcón-González
- Unidad Profesional Interdisciplinaria de Ingeniería Campus Guanajuato, Instituto Politécnico Nacional, Av. Mineral de Valenciana No. 200, Col. Fraccionamiento Industrial Puerto Interior, Silao de la Victoria, 36275, Guanajuato, Mexico.
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4
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He X, Wang Y, Yang P, Lin L, Liu S, Shao Z, Zhang K, Yao Y. High-Performance Graphene Biocomposite Enabled by Fe 3+ Coordination for Thermal Management. ACS APPLIED MATERIALS & INTERFACES 2023; 15:54886-54897. [PMID: 37963338 DOI: 10.1021/acsami.3c10894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Emerging biocomposites with excellent heat dissipation capabilities and inherent sustainability are urgently needed to address the cooling issues of modern electronics and growing environmental concerns. However, the moisture stability, mechanical performance, thermal conductivity, and even flame retardancy of biomass-based materials are generally insufficient for practical thermal management applications. Herein, we present a high-performance graphene biocomposite consisting of carboxylated cellulose nanofibers and graphene nanosheets through an evaporation-induced self-assembly and subsequent Fe3+ cross-linking strategy. The Fe3+ coordination plays a critical role in stabilizing the material structure, thereby improving the mechanical strength and water stability of the biocomposite films, and its effect is revealed by density functional theory calculations. The hierarchical structure of the biocomposite films also leads to a high in-plane thermal conductivity of 42.5 W m-1 K-1, enabling a superior heat transfer performance. Furthermore, the resultant biocomposite films exhibit outstanding Joule heating performance with a fast thermal response and long-term stability, improved thermal stability, and flame retardancy. Therefore, such a general strategy and the desired overall properties of the biocomposite films offer wide application prospects for functional and safe thermal management.
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Affiliation(s)
- Xuhua He
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
| | - Ying Wang
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
| | - Peng Yang
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
| | - Lin Lin
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
| | - Shizhuo Liu
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
| | - Zhipeng Shao
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
| | - Kai Zhang
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
| | - Yagang Yao
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
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5
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Shen Y, Zhang X, Su J, Lin L, Jiang Z, Qiu L, Wang S, Wu B, Pu C, Cai X, Liu Y, Zhang X. Significantly Enhancing Mechanical and Thermal Properties of Cellulose-Based Composites by Adding Small Amounts of Lysozyme-Modified Graphene Nanoplatelets via Forming Strong Double-Cross-Linked Interface Interactions. ACS APPLIED MATERIALS & INTERFACES 2023; 15:43159-43168. [PMID: 37651452 DOI: 10.1021/acsami.3c08195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Thermally conductive cellulose-based composites have great application potential in the thermal management of portable and wearable electronic devices. In this work, cellulose-based composites with excellent mechanical and thermal properties were developed by using lysozyme-modified graphene nanoplatelets (LmGNP), epichlorohydrin (ECH), and hydrolyzed cellulose via forming strong double-cross-linked interface interactions, including the hydrogen bond network generated between LmGNP and cellulose and the chemical cross-link of ECH. As for the composites containing 8 wt % LmGNP, the in-plane thermal conductivity was 3.341 W·m-1K-1, while the tensile stress was 114.60 MPa, which increased by 297.3 and 146.2%, respectively, compared to pure cellulose. Along with the good stability, insulation, and lightweight properties, the fabricated composites have the potential to become a promising heat dissipation material for wearable electronic devices.
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Affiliation(s)
- Yufeng Shen
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xinru Zhang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Engineering Research Center of Energy Saving and Environmental Protection, Beijing 100083, China
| | - Jiangpeng Su
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Lin Lin
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Engineering Research Center of Energy Saving and Environmental Protection, Beijing 100083, China
| | - Zeyi Jiang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Key Laboratory for Energy Saving and Emission Reduction of Metallurgical Industry, Beijing 100083, China
| | - Lin Qiu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Sida Wang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - BingJi Wu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Changyu Pu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xinzhi Cai
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Chinalco Capital Holdings Company Limited, Beijing 100044, China
| | - Yuqiao Liu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xinxin Zhang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Key Laboratory for Energy Saving and Emission Reduction of Metallurgical Industry, Beijing 100083, China
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6
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Zhao L, Wei C, Ren J, Li Y, Zheng J, Jia L, Wang Z, Jia S. Biomimetic Nacreous Composite Films toward Multipurpose Application Structured by Aramid Nanofibers and Edge-Hydroxylated Boron Nitride Nanosheets. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lihua Zhao
- College of Electrical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Chengmei Wei
- College of Electrical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Junwen Ren
- College of Electrical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Yuchao Li
- School of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, P. R. China
| | - Jiajia Zheng
- Laboratory of Theoretical and Computational Nanoscience, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Lichuan Jia
- College of Electrical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Zhong Wang
- College of Electrical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Shenli Jia
- College of Electrical Engineering, Sichuan University, Chengdu 610065, P. R. China
- State Key Laboratory of the Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, P. R. China
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7
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Feng CP, Wei F, Sun KY, Wang Y, Lan HB, Shang HJ, Ding FZ, Bai L, Yang J, Yang W. Emerging Flexible Thermally Conductive Films: Mechanism, Fabrication, Application. NANO-MICRO LETTERS 2022; 14:127. [PMID: 35699776 PMCID: PMC9198190 DOI: 10.1007/s40820-022-00868-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 04/21/2022] [Indexed: 05/27/2023]
Abstract
Effective thermal management is quite urgent for electronics owing to their ever-growing integration degree, operation frequency and power density, and the main strategy of thermal management is to remove excess energy from electronics to outside by thermal conductive materials. Compared to the conventional thermal management materials, flexible thermally conductive films with high in-plane thermal conductivity, as emerging candidates, have aroused greater interest in the last decade, which show great potential in thermal management applications of next-generation devices. However, a comprehensive review of flexible thermally conductive films is rarely reported. Thus, we review recent advances of both intrinsic polymer films and polymer-based composite films with ultrahigh in-plane thermal conductivity, with deep understandings of heat transfer mechanism, processing methods to enhance thermal conductivity, optimization strategies to reduce interface thermal resistance and their potential applications. Lastly, challenges and opportunities for the future development of flexible thermally conductive films are also discussed.
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Affiliation(s)
- Chang-Ping Feng
- Shandong Engineering Research Center for Additive Manufacturing, Qingdao University of Technology, Qingdao, 266520, People's Republic of China.
| | - Fang Wei
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Kai-Yin Sun
- Shandong Engineering Research Center for Additive Manufacturing, Qingdao University of Technology, Qingdao, 266520, People's Republic of China
| | - Yan Wang
- Shandong Engineering Research Center for Additive Manufacturing, Qingdao University of Technology, Qingdao, 266520, People's Republic of China
| | - Hong-Bo Lan
- Shandong Engineering Research Center for Additive Manufacturing, Qingdao University of Technology, Qingdao, 266520, People's Republic of China.
| | - Hong-Jing Shang
- Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Fa-Zhu Ding
- Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Lu Bai
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Jie Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Wei Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China.
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8
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Sun DX, Gu T, Mao YT, Huang CH, Qi XD, Yang JH, Wang Y. Fabricating High-Thermal-Conductivity, High-Strength, and High-Toughness Polylactic Acid-Based Blend Composites via Constructing Multioriented Microstructures. Biomacromolecules 2022; 23:1789-1802. [PMID: 35344361 DOI: 10.1021/acs.biomac.2c00067] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The massive accumulation of plastic waste has caused a serious negative impact on the human living environment. Replacing traditional petroleum-based polymers with biobased and biodegradable poly(l-lactic acid) (PLLA) is considered an effective way to solve this problem. However, it is still a great challenge to manufacture PLLA-based composites with high thermal conductivity and excellent mechanical properties via tailoring the microstructures of the blend composites. In the present work, a melt extrusion-stretching method is utilized to fabricate biodegradable PLLA/poly(butylene adipate-co-butylene terephthalate)/carbon nanofiber (PLLA/PBAT/CNF) blend composites. It is found that the incorporation of the extensional flow field induces the formation of multioriented microstructures in the composites, including the oriented PLLA molecular chains, elongated PBAT dispersed phase, and oriented CNFs, which synergistically improve the thermal conductivity and mechanical properties of the blend composites. At a CNF content of 10 wt %, the in-plane thermal conductivity, tensile strength, and elongation at break of the blend composite reach 1.53 Wm-1 K-1, 66.8 MPa, and 56.5%, respectively, which increased by 31.9, 73.5, and 874.1% compared with those of the conventionally hot-compressed sample (1.16 Wm-1 K-1, 38.5 MPa, and 5.8%, respectively). The main mechanism for the improved thermal conductivity is that the multioriented structure promotes the formation of a CNF thermal conductive network in the composites. The strengthening mechanism is attributed to the orientation of both PLLA molecular chains and CNFs in the stretching direction, restricting the movement of PLLA molecular segments around CNFs, and the toughening mechanism is due to the transformation of PLLA molecular chains from low-energy gt conformers to high-energy gg conformers induced by extensional flow field. More interestingly, after the extrusion-stretched samples are annealed, the oriented PLLA molecular chains form oriented crystal structures such as extended-chain lamellae, common "Shish-kebabs," and hybrid Shish-kebabs, which further enhance the thermal conductivity and heat resistance of the samples. This work reveals the effects of the orientation of the matrix molecular chains and crystallites on the thermal conductivity and mechanical properties of composites and provides a new way to prepare high-performance PLLA-based composites with high thermal conductivity, excellent mechanical properties, and high heat resistance.
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Affiliation(s)
- De-Xiang Sun
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Ting Gu
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yu-Tong Mao
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Chen-Hui Huang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Xiao-Dong Qi
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Jing-Hui Yang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yong Wang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
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9
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Kalaoglu-Altan OI, Kayaoglu BK, Trabzon L. Improving thermal conductivities of textile materials by nanohybrid approaches. iScience 2022; 25:103825. [PMID: 35243220 PMCID: PMC8867053 DOI: 10.1016/j.isci.2022.103825] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The thermal transfer between individual body and the surroundings occurs by several paths such as radiation, evaporation, conduction, and convection. Thermal management is related with the heat transfer between the human body and the surroundings, which aims to keep the body temperature in the comfort range either via preserving or via emitting the body heat. The essential duty of clothing is to contribute to the thermal balance of the human body by regulating the heat and moisture transfer. In the case of poorly controlled body heat, health problems such as hyperthermia and heatstroke along with environmental problems due to higher energy consumption can occur. Recently, research has been focused on advanced textiles with novel approaches on materials synthesis and structure design, which can provide thermal comfort together with energy saving. This review article focuses on the innovative strategies basically on the passive textile models for improved thermal conductivity. We will discuss both the fabrication techniques and the inclusion of carbon-based and boron-based fillers to form nano-hybrid textile solutions, which are used to improve the thermal conductivity of the materials.
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Affiliation(s)
| | | | - Levent Trabzon
- Istanbul Technical University, Department of Mechanical Engineering, Beyoglu, Istanbul 34437, Turkey.,Istanbul Technical University, MEMS Research Center, Maslak, Istanbul 34469, Turkey.,Nanotechnology Research and Application Center - ITUnano, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
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10
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Wang YY, Li YQ, Xue SS, Zhu WB, Wang XQ, Huang P, Fu SY. Superstrong, Lightweight, and Exceptional Environmentally Stable SiO 2@GO/Bamboo Composites. ACS APPLIED MATERIALS & INTERFACES 2022; 14:7311-7320. [PMID: 35078316 DOI: 10.1021/acsami.1c22503] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Development of lightweight structural materials from fast-growing bamboos is of great significance to building a sustainable society. However, previously developed structural bamboos by delignification combined with densification would easily fail under large external loading after exposure to water due to structure collapse, severely limiting their practical applications. Here, we demonstrate an ultrastrong and exceptional environmentally stable bamboo composite consisting of a graphene oxide (GO)/bamboo core and hierarchical SiO2 protection layer. The GO/bamboo composite exhibits ultrahigh tensile strength (641.6 MPa), superb flexural strength (428.4 MPa), and excellent toughness (17.5 MJ/m3), which are increased by about 480, 250, and 360% compared with natural bamboo, respectively. As a result, the specific tensile strength of the GO/bamboo composite is up to 513.3 MPa·cm3/g due to its low density (1.25 g/cm3), outperforming engineering structural materials such as aluminum alloys, steels, and titanium alloys. These large improvements benefit from the well-preserved bamboo scaffold and the strong hydrogen bonds between bamboo fibers and GO nanosheets. On the other hand, the SiO2@GO/bamboo composite shows superhydrophobicity due to the construction of hierarchical SiO2 layers, which endows it with outstanding water resistance. Moreover, the bamboo composite shows an ultralow coefficient of thermal expansion (≈2.3 × 10-6 K-1), indicating its excellent dimensional stability. Considering the ultrahigh mechanical performance and outstanding environmental stability, the developed lightweight SiO2@GO/bamboo composite is hopeful to be a green and sustainable structural material for practical engineering applications.
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Affiliation(s)
- You-Yong Wang
- College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
| | - Yuan-Qing Li
- College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
| | - Shan-Shan Xue
- College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
| | - Wei-Bin Zhu
- College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
| | - Xiang-Qian Wang
- College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
| | - Pei Huang
- College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
| | - Shao-Yun Fu
- College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
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11
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Shu L, Zhang XF, Wang Z, Yao J. Structure reorganization of cellulose hydrogel by green solvent exchange for potential plastic replacement. Carbohydr Polym 2022; 275:118695. [PMID: 34742422 DOI: 10.1016/j.carbpol.2021.118695] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 09/17/2021] [Accepted: 09/19/2021] [Indexed: 12/23/2022]
Abstract
Petroleum-based plastics have raised great environmental concerns from the beginning of their production to the end-of-life cycle. It is urgently needed to develop sustainable and green materials with certain plastic properties. Herein, biobased cellulose films are fabricated from low quality cotton cellulose by manipulating its hydrogen bonding network with green solvents. The cellulose is dispersed in inorganic salts (ZnCl2/CaCl2) to form ionic hydrogels, and then transformed into tough and flexible films through ethanol exchange and air drying. Without extra hot-pressing treatment, the aggregate structure of cellulose is re-organized with the disruption and re-construction of hydrogen bonds. Benefiting from the densely packed structure and highly in-plane orientation, the cellulose film presents outstanding optical, thermal and mechanical properties. Such cellulose materials hold a potential for plastic replacement in the field of biodegradable packing.
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Affiliation(s)
- Lian Shu
- College of Chemical Engineering, Nanjing Forestry University, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing, Jiangsu 210037, China
| | - Xiong-Fei Zhang
- College of Chemical Engineering, Nanjing Forestry University, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing, Jiangsu 210037, China
| | - Zhongguo Wang
- College of Chemical Engineering, Nanjing Forestry University, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing, Jiangsu 210037, China
| | - Jianfeng Yao
- College of Chemical Engineering, Nanjing Forestry University, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing, Jiangsu 210037, China.
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12
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Tran TTV, Vo DN, Nguyen ST, Luu SDN, Mofijur M, Vu CM. In situ sintered silver decorated
3D
structure of cellulose scaffold for highly thermoconductive electromagnetic interference shielding epoxy nanocomposites. J Appl Polym Sci 2021. [DOI: 10.1002/app.51193] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Thi Tuong Vi Tran
- Faculty of Environmental and Food Engineering Nguyen Tat Thanh University Ho Chi Minh City Vietnam
| | - Dai‐Viet N. Vo
- College of Medical and Health Science Asia University Taichung Taiwan
| | - Son Thanh Nguyen
- Department of Creative Engineering National Institute of Technology, Kushiro College Kushiro Japan
| | - Son D. N. Luu
- Institute of Research and Development Duy Tan University Danang Vietnam
| | - M. Mofijur
- School of Information, Systems, and Modelling, Faculty of Engineering and Information Technology University of Technology Sydney Ultimo New South Wales Australia
- Mechanical Engineering Department Prince Mohammad Bin Fahad University Al Khobar Saudi Arabia
| | - Canh Minh Vu
- Laboratory of Advanced Materials Chemistry Advanced Institute of Materials Science, Ton Duc Thang University Ho Chi Minh City Vietnam
- Faculty of Applied Sciences Ton Duc Thang University Ho Chi Minh City Vietnam
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13
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Ahmed A, Adak B, Faruk MO, Mukhopadhyay S. Nanocellulose Coupled 2D Graphene Nanostructures: Emerging Paradigm for Sustainable Functional Applications. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01830] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Abbas Ahmed
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Textile and Fiber Engineering, Indian Institute of Technology, New Delhi 110016, India
- National Institute of Textile Engineering and Research, University of Dhaka, Dhaka 1000, Bangladesh
| | - Bapan Adak
- Product Development Department, Kusumgar Corporates Pvt. Ltd., Vapi, Valsad, Gujarat 396195, India
| | - Md. Omar Faruk
- National Institute of Textile Engineering and Research, University of Dhaka, Dhaka 1000, Bangladesh
| | - Samrat Mukhopadhyay
- Department of Textile and Fiber Engineering, Indian Institute of Technology, New Delhi 110016, India
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14
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Tu H, Zhu M, Duan B, Zhang L. Recent Progress in High-Strength and Robust Regenerated Cellulose Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2000682. [PMID: 32686231 DOI: 10.1002/adma.202000682] [Citation(s) in RCA: 119] [Impact Index Per Article: 39.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/16/2020] [Indexed: 05/22/2023]
Abstract
High-strength petroleum-based materials like plastics have been widely used in various fields, but their nonbiodegradability has caused serious pollution problems. Cellulose, as the most abundant sustainable polymer, has a great chance to act as the ideal substitute for plastics due to its low cost, wide availability, biodegradability, etc. Herein, the recent achievements for developing cellulose "green" solvents and regenerated cellulose materials with high strength via the "bottom-up" route are presented. Cellulose can be regenerated to produce films/membranes, hydrogels/aerogels, filaments/fibers, microspheres/beads, bioplastics, etc., which show potential applications in textiles, biomedicine, energy storage, packaging, etc. Importantly, these cellulose-based materials can be biodegraded in soil and oceans, reducing environmental pollution. The cellulose solvents, dissolving mechanism, and strategies for constructing the regenerated cellulose functional materials with high strength and performances, together with the current achievements and urgent challenges are summarized, and some perspectives are also proposed. The near future will be an exciting era for high-strength biodegradable and renewable materials. The hope is that many environmentally friendly materials with good properties and low cost will be produced for commercial use, which will be beneficial for sustainable development in the world.
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Affiliation(s)
- Hu Tu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Mengxiang Zhu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Bo Duan
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Lina Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
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15
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Zhao LH, Jin YF, Wang ZG, Ren JW, Jia LC, Yan DX, Li ZM. Highly Thermally Conductive Fluorinated Graphene/Aramid Nanofiber Films with Superior Mechanical Properties and Thermostability. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01260] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Li-Hua Zhao
- College of Electrical Engineering, Sichuan University, Chengdu 610065, China
| | - Yi-Fei Jin
- College of Electrical Engineering, Sichuan University, Chengdu 610065, China
| | - Zhi-Guo Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jun-Wen Ren
- College of Electrical Engineering, Sichuan University, Chengdu 610065, China
| | - Li-Chuan Jia
- College of Electrical Engineering, Sichuan University, Chengdu 610065, China
| | - Ding-Xiang Yan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
- School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China
| | - Zhong-Ming Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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16
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Oldoni FC, Bernardo MP, Oliveira Filho JG, de Aguiar AC, Moreira FK, Mattoso LH, Colnago LA, Ferreira MD. Valorization of mangoes with internal breakdown through the production of edible films by continuous solution casting. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111339] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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17
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Lewis JS, Perrier T, Barani Z, Kargar F, Balandin AA. Thermal interface materials with graphene fillers: review of the state of the art and outlook for future applications. NANOTECHNOLOGY 2021; 32:142003. [PMID: 33049724 DOI: 10.1088/1361-6528/abc0c6] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We review the current state-of-the-art graphene-enhanced thermal interface materials for the management of heat in the next generation of electronics. Increased integration densities, speed and power of electronic and optoelectronic devices require thermal interface materials with substantially higher thermal conductivity, improved reliability, and lower cost. Graphene has emerged as a promising filler material that can meet the demands of future high-speed and high-powered electronics. This review describes the use of graphene as a filler in curing and non-curing polymer matrices. Special attention is given to strategies for achieving the thermal percolation threshold with its corresponding characteristic increase in the overall thermal conductivity. Many applications require high thermal conductivity of composites, while simultaneously preserving electrical insulation. A hybrid filler approach, using graphene and boron nitride, is presented as a possible technology providing for the independent control of electrical and thermal conduction. The reliability and lifespan performance of thermal interface materials is an important consideration towards the determination of appropriate practical applications. The present review addresses these issues in detail, demonstrating the promise of graphene-enhanced thermal interface materials compared to alternative technologies.
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Affiliation(s)
- Jacob S Lewis
- Phonon Optimized Engineered Materials (POEM) Center, University of California, Riverside, CA 92521, United States of America
- Materials Science and Engineering Program, Bourns College of Engineering, University of California, Riverside, CA 92521, United States of America
| | - Timothy Perrier
- Phonon Optimized Engineered Materials (POEM) Center, University of California, Riverside, CA 92521, United States of America
- Department of Electrical and Computer Engineering, Bourns College of Engineering, University of California, Riverside, CA 92521, United States of America
| | - Zahra Barani
- Phonon Optimized Engineered Materials (POEM) Center, University of California, Riverside, CA 92521, United States of America
- Department of Electrical and Computer Engineering, Bourns College of Engineering, University of California, Riverside, CA 92521, United States of America
| | - Fariborz Kargar
- Phonon Optimized Engineered Materials (POEM) Center, University of California, Riverside, CA 92521, United States of America
- Department of Electrical and Computer Engineering, Bourns College of Engineering, University of California, Riverside, CA 92521, United States of America
| | - Alexander A Balandin
- Phonon Optimized Engineered Materials (POEM) Center, University of California, Riverside, CA 92521, United States of America
- Materials Science and Engineering Program, Bourns College of Engineering, University of California, Riverside, CA 92521, United States of America
- Department of Electrical and Computer Engineering, Bourns College of Engineering, University of California, Riverside, CA 92521, United States of America
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18
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He X, Wang Y. Recent Advances in the Rational Design of Thermal Conductive Polymer Composites. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05509] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Xuhua He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Yuechuan Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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19
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Yang Y, Su G, Li Q, Zhu Z, Liu S, Zhuo B, Li X, Ti P, Yuan Q. Performance of the highly sensitive humidity sensor constructed with nanofibrillated cellulose/graphene oxide/polydimethylsiloxane aerogel via freeze drying. RSC Adv 2021; 11:1543-1552. [PMID: 35424105 PMCID: PMC8693616 DOI: 10.1039/d0ra08193k] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 12/06/2020] [Indexed: 12/14/2022] Open
Abstract
A kind of capacitive humidity sensor with high sensitivity constructed with nanofibrillated cellulose (NFC), graphene oxide (GO) and polydimethylsiloxane (PDMS) is presented in this work, via a simple ultrasonic dispersion and freeze drying technology. The NFC and GO with a strong adsorption for water molecules were used as a substrate for the promotion of capacitive response of the humidity sensor. Moreover, anhydrous ethanol was added to inhibit the generation of big cracks in the humidity sensor in the freeze drying process, so as to obtain a regular network porous structure, then providing a great deal of conduction channels and active sites for molecular water. Also, the addition of PDMS can effectively enhance the flexibility and stability of its porous structure. The results confirmed that the humidity sensor with 30 wt% GO showed an excellent humidity sensitivity (6576.41 pF/% RH), remarkable reproducibility, low humidity hysteresis characteristic in 11-97% relative humidity (RH) at 25 °C, and short response/recovery times (57 s/2 s). In addition, the presented sensor exhibited small relative deviation of the measured relative humidity value compared with the commercial hygrometer. The realization of the high sensitivity can be attributed to the theories about interaction of the hydrophilic group, proton transfer of water molecules and the three-dimensional network transport structure model. Therefore, the NFC/GO/PDMS humidity sensor finally realizes stable, reproducible and fast humidity sensing via an eco-friendly process, exhibiting promising potential for wide practical application.
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Affiliation(s)
- Yutong Yang
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Guoting Su
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Qilin Li
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Zipiao Zhu
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Shaoran Liu
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Bing Zhuo
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Xinpu Li
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Pu Ti
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Quanping Yuan
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
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20
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Semerci E, Bedri TE, Kizilcan N. Preparation of thermal conductive Poly(methyl methacrylate)/Silicon nitride nanocomposites via click chemistry. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123285] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Lyu Q, Peng B, Xie Z, Du S, Zhang L, Zhu J. Moist-Induced Electricity Generation by Electrospun Cellulose Acetate Membranes with Optimized Porous Structures. ACS APPLIED MATERIALS & INTERFACES 2020; 12:57373-57381. [PMID: 33306344 DOI: 10.1021/acsami.0c17931] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Harvesting energy from moist in the atmosphere has recently been demonstrated as an effective manner for a portable power supply to meet the ever-increasing demands of energy consumption. Porous materials are shown to have great potential in moist-induced electricity generation. Herein, we report moist-induced electricity generation by electrospun cellulose acetate (CA) membranes with optimized porous structures. We show that the pore size and porosity of CA membranes can be readily tuned via a facile compression and annealing process, and the effect of pore features on the output voltages can thus be investigated systematically. We find that, at a relatively high porosity, the electricity-generation performance can be further enhanced by constructing a smaller pore to form more nanochannels. Porous CA membranes, with an optimized porosity of 52.6% and a pore diameter less than 250 nm, are prepared to construct moist-induced electricity generators, which can be applied as breath sensors and can power up calculator operation. The current study provides insights for the construction of porous materials with different pore characteristics for moist-induced electricity generation, especially in the exploration of more efficient and low-cost porous materials for large-scale practical application of the portable power supply.
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Affiliation(s)
- Quanqian Lyu
- State Key Laboratory of Material Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P.R. China
| | - Bolun Peng
- State Key Laboratory of Material Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P.R. China
| | - Zhanjun Xie
- State Key Laboratory of Material Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P.R. China
| | - Shuo Du
- State Key Laboratory of Material Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P.R. China
| | - Lianbin Zhang
- State Key Laboratory of Material Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P.R. China
| | - Jintao Zhu
- State Key Laboratory of Material Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P.R. China
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22
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Ultra-high thermal-conductive, reduced graphene oxide welded cellulose nanofibrils network for efficient thermal management. Carbohydr Polym 2020; 250:116971. [DOI: 10.1016/j.carbpol.2020.116971] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/03/2020] [Accepted: 08/14/2020] [Indexed: 12/25/2022]
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23
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Recent Advances in Preparation, Mechanisms, and Applications of Thermally Conductive Polymer Composites: A Review. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs4040180] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
At present, the rapid accumulation of heat and the heat dissipation of electronic equipment and related components are important reasons that restrict the miniaturization, high integration, and high power of electronic equipment. It seriously affects the performance and life of electronic devices. Hence, improving the thermal conductivity of polymer composites (TCPCs) is the key to solving this problem. Compared with manufacturing intrinsic thermally conductive polymer composites, the method of filling the polymer matrix with thermally conductive fillers can better-enhance the thermal conductivity (λ) of the composites. This review starts from the thermal conduction mechanism and describes the factors affecting the λ of polymer composites, including filler type, filler morphology and distribution, and the functional surface treatment of fillers. Next, we introduce the preparation methods of filled thermally conductive polymer composites with different filler types. In addition, some commonly used thermal-conductivity theoretical models have been introduced to better-analyze the thermophysical properties of polymer composites. We discuss the simulation of λ and the thermal conduction process of polymer composites based on molecular dynamics and finite element analysis methods. Meanwhile, we briefly introduce the application of polymer composites in thermal management. Finally, we outline the challenges and prospects of TCPCs.
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24
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Burger D, Beaumont M, Rosenau T, Tamada Y. Porous Silk Fibroin/Cellulose Hydrogels for Bone Tissue Engineering via a Novel Combined Process Based on Sequential Regeneration and Porogen Leaching. Molecules 2020; 25:E5097. [PMID: 33153040 PMCID: PMC7663655 DOI: 10.3390/molecules25215097] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/17/2020] [Accepted: 10/26/2020] [Indexed: 12/19/2022] Open
Abstract
Scaffolds used for bone tissue engineering need to have a variety of features to accommodate bone cells. The scaffold should mimic natural bone, it should have appropriate mechanical strength, support cell differentiation to the osteogenic lineage, and offer adequate porosity to allow vascularization and bone in-growth. In this work, we aim at developing a new process to fabricate such materials by creating a porous composite material made of silk fibroin and cellulose as a suitable scaffold of bone tissue engineering. Silk fibroin and cellulose are both dissolved together in N,N-dimethylacetamide/LiCl and molded to a porous structure using NaCl powder. The hydrogels are prepared by a sequential regeneration process: cellulose is solidified by water vapor treatment, while the remaining silk fibroin in the hydrogel is insolubilized by methanol, which leads to a cellulose framework structure embedded in a silk fibroin matrix. Finally, the hydrogels are soaked in water to dissolve the NaCl for making a porous structure. The cellulose composition results in improving the mechanical properties for the hydrogels in comparison to the silk fibroin control material. The pore size and porosity are estimated at around 350 µm and 70%, respectively. The hydrogels support the differentiation of MC3T3 cells to osteoblasts and are expected to be a good scaffold for bone tissue engineering.
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Affiliation(s)
- Dennis Burger
- Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan;
| | - Marco Beaumont
- Institute of Chemistry of Renewable Resources, Department for Chemistry, University of Natural Resources and Life Sciences Vienna (BOKU), Konrad-Lorenz-Str. 24, 3430 Tulln, Austria
| | - Thomas Rosenau
- Institute of Chemistry of Renewable Resources, Department for Chemistry, University of Natural Resources and Life Sciences Vienna (BOKU), Konrad-Lorenz-Str. 24, 3430 Tulln, Austria
| | - Yasushi Tamada
- Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan;
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25
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Hu D, Ma W. Nanocellulose as a Sustainable Building Block to Construct Eco-Friendly Thermally Conductive Composites. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04319] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dechao Hu
- School of Materials Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, P. R. China
| | - Wenshi Ma
- School of Materials Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, P. R. China
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26
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Li M, Liu J, Pan S, Zhang J, Liu Y, Liu J, Lu H. Highly Oriented Graphite Aerogel Fabricated by Confined Liquid-Phase Expansion for Anisotropically Thermally Conductive Epoxy Composites. ACS APPLIED MATERIALS & INTERFACES 2020; 12:27476-27484. [PMID: 32432449 DOI: 10.1021/acsami.0c02151] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Graphene-based thermally conductive polymer composites are of great importance for the removal of the excess heat generated by electronic devices. However, due to the orientation of graphene sheets in the polymer matrix, the through-plane thermal conductivity of polymer/graphene composites remains far from satisfactory. We here demonstrate a confined liquid-phase expansion strategy to fabricate highly oriented confined expanded graphite (CEG) aerogels. After being incorporated into epoxy resin (EP), the resulting EP/CEG composites exhibit a high through-plane thermal conductivity (4.14 ± 0.21 W m-1 K-1) at a quite low filler loading of 1.75 wt % (0.91 vol %), nearly 10 times higher than that of neat EP resin and 7.5 times higher than the in-plane thermal conductivity of the composite, indicating that the CEG aerogel has a high through-plane thermal conductivity enhancement efficiency that outperforms those of many graphite/graphene-based fillers. The facile preparation method holds great industrial application potential in fabricating anisotropic thermally conductive polymer composites.
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Affiliation(s)
- Mengxiong Li
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Collaborative Innovation Center of Polymers and Polymer Composites, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Jiangwei Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Collaborative Innovation Center of Polymers and Polymer Composites, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Shaoxue Pan
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Collaborative Innovation Center of Polymers and Polymer Composites, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Jiajia Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Collaborative Innovation Center of Polymers and Polymer Composites, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Ya Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Collaborative Innovation Center of Polymers and Polymer Composites, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
- Electronics Materials and Systems Laboratory (EMSL), Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, Kemivägen 9, SE-412 96 Göteborg, Sweden
| | - Johan Liu
- Electronics Materials and Systems Laboratory (EMSL), Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, Kemivägen 9, SE-412 96 Göteborg, Sweden
- SMIT Center, School of Mechanical Engineering and Automation, Shanghai University, No. 20, Chengzhong Road, Shanghai 201800, China
| | - Hongbin Lu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Collaborative Innovation Center of Polymers and Polymer Composites, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
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27
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Vu MC, Kim IH, Choi WK, Lim CS, Islam MA, Kim SR. Highly Flexible Graphene Derivative Hybrid Film: An Outstanding Nonflammable Thermally Conductive yet Electrically Insulating Material for Efficient Thermal Management. ACS APPLIED MATERIALS & INTERFACES 2020; 12:26413-26423. [PMID: 32469197 DOI: 10.1021/acsami.0c02427] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
In modern society, advanced technology has facilitated the emergence of multifunctional appliances, particularly, portable electronic devices, which have been growing rapidly. Therefore, flexible thermally conductive materials with the combination of properties like outstanding thermal conductivity, excellent electrical insulation, mechanical flexibility, and strong flame retardancy, which could be used to efficiently dissipate heat generated from electronic components, are the demand of the day. In this study, graphite fluoride, a derivative of graphene, was exfoliated into graphene fluoride sheets (GFS) via the ball-milling process. Then, a suspension of graphene oxide (GO) and GFSs was vacuum-filtrated to obtain a mixed mass, and subsequently, the mixed mass was subjected to reduction under the action hydrogen iodide at low temperature to transform the GO to reduced graphene oxide (rGO). Finally, a highly flexible and thermally conductive 30-μm thick GFS@rGO hybrid film was prepared, which showed an exceptional in-plane thermal conductivity (212 W·m-1·K-1) and an excellent electrical insulating property (a volume resistivity of 1.1 × 1011 Ω·cm). The extraordinary in-plane thermal conductivity of the GFS@rGO hybrid films was attributed to the high intrinsic thermal conductivity of the filler components and the highly ordered filler alignment. Additionally, the GFS@rGO films showed a tolerance to bending cycles and high-temperature flame. The tensile strength and Young's modulus of the GFS@rGO films increased with increasing the rGO content and reached a tensile strength of 69.3 MPa and a Young's modulus of 10.2 GPa at 20 wt % rGO. An experiment of exposing the films to high-temperature flame demonstrated that the GFS@rGO films could efficiently prevent fire spreading. The microcombustion calorimetry results indicated that the GFS@rGO had significantly lower heat release rate (HRR) compared to the GO film. The peak HRR of GFS@rGO10 was only 21 W·g-1 at 323 °C, while that of GO was 198 W·g-1 at 159 °C.
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Affiliation(s)
- Minh Canh Vu
- Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Il-Ho Kim
- Department of Materials Science and Engineering, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Won Kook Choi
- Center for Optoelectronic Materials and Devices, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Choong-Sun Lim
- Business Development Research Center for Green Fine Chemicals, Korea Research Institute of Chemical Technology, Ulsan 44412, Republic of Korea
| | - Md Akhtarul Islam
- Department of Chemical Engineering and Polymer Science, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Sung-Ryong Kim
- Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju 27469, Republic of Korea
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Pellá MC, Silva OA, Pellá MG, Beneton AG, Caetano J, Simões MR, Dragunski DC. Effect of gelatin and casein additions on starch edible biodegradable films for fruit surface coating. Food Chem 2020; 309:125764. [DOI: 10.1016/j.foodchem.2019.125764] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 10/19/2019] [Accepted: 10/21/2019] [Indexed: 01/13/2023]
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Emerging challenges in the thermal management of cellulose nanofibril-based supercapacitors, lithium-ion batteries and solar cells: A review. Carbohydr Polym 2020; 234:115888. [PMID: 32070508 DOI: 10.1016/j.carbpol.2020.115888] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/14/2020] [Accepted: 01/15/2020] [Indexed: 02/07/2023]
Abstract
In recent years, extensive efforts have been devoted to electronic miniaturization and integration. Accordingly, heating up of electronics has become a critical problem that needs to be urgently solved by efficient and reliable thermal management. Electronic device substrates made of cellulose nanofibrils (CNFs) exhibit outstanding flexibility, mechanical properties, and optical properties. Combining CNFs with high-thermal-conductivly fillers is an effective thermal management technique. This paper focuses on the thermal management of electronic devices and highlights the potential of CNF-based materials for efficient thermal management of energy storage electronic such as supercapacitors, lithium-ion batteries and solar cells. A high-thermal-conductivity composite material for electronic devices can be obtained by combining CNFs as the framework material with carbon nanotubes, graphene, and inorganic nitrides. Moreover, The research progress in the application of CNFs-based materials for supercapacitors, lithium-ion batteries and solar cells is highlighted, and the emerging challenges of different CNFs-based energy storage devices are discussed.
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Giubilini A, Sciancalepore C, Messori M, Bondioli F. New biocomposite obtained using poly(3‐hydroxybutyrate‐co‐3‐hydroxyhexanoate) (PHBH) and microfibrillated cellulose. J Appl Polym Sci 2020. [DOI: 10.1002/app.48953] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Alberto Giubilini
- Department of Engineering and Architecture (DIA)University of Parma Parma Italy
| | - Corrado Sciancalepore
- Department of Engineering and Architecture (DIA)University of Parma Parma Italy
- INSTM, National Consortium of Material Science and Technology Florence Italy
| | - Massimo Messori
- INSTM, National Consortium of Material Science and Technology Florence Italy
- Department of Engineering “Enzo Ferrari”University of Modena and Reggio Emilia Modena Italy
| | - Federica Bondioli
- INSTM, National Consortium of Material Science and Technology Florence Italy
- Department of Applied Science and Technology (DISAT)Politecnico di Torino Torino Italy
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31
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He X, Wang Y. Highly Thermally Conductive Polyimide Composite Films with Excellent Thermal and Electrical Insulating Properties. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b05939] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xuhua He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Yuechuan Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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32
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Ahmed A, Adak B, Bansala T, Mukhopadhyay S. Green Solvent Processed Cellulose/Graphene Oxide Nanocomposite Films with Superior Mechanical, Thermal, and Ultraviolet Shielding Properties. ACS APPLIED MATERIALS & INTERFACES 2020; 12:1687-1697. [PMID: 31841299 DOI: 10.1021/acsami.9b19686] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study reports for the first time a green process to fabricate Lyocell fiber and graphene oxide (GO) based novel cellulose/graphene oxide nanocomposite (CGN) flexible films for ultraviolet (UV) shielding applications. A polyethelene glycol (PEG) mediated solvent system was utilized to make CGN films via solution casting route. To improve the dispersion of GO sheets in a cellulosic matrix, a reactive interface was formed in between cellulose and oxygenic functionalized groups of GO sheets via cross-linking them with epichlorohydrin (ECH). The addition of GO sheets in cellulose matrix leads to the synergistic changes, which were observed in the structure and surface morphology of CGN nanocomposite films. Enhanced dispersion of GO sheets in CGN films was observed in morphological investigations which is attributed to the adequate cellulose-GO interaction by hydrogen bonding and led to significant enhancement in the mechanical and thermal properties. The tensile strength and Young's modulus of CGN films with 2 wt % GO loading (CGN2) increased to 89 MPa and 4.3 GPa from 55.6 MPa and 2.1 GPa, respectively, as compared to the neat cellulosic film. Additionally, the CGN films exhibited remarkable UV shielding capability which increased with GO loading in a cellulose matrix. The CGN2 film (2 wt % GO loading) possessed outstanding absorbance in the wavelength range of 280 to 400 nm and showed almost complete shielding (∼99%) of UV rays in both the UV-B and the UV-A regions. Moreover, the ultraviolet protection factor of the CGN2 film demonstrated more than 80-fold increase compared to that of the neat cellulose film. The obtained CGN nanocomposite film has a high potential for applications in the field of UV protection.
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Affiliation(s)
- Abbas Ahmed
- Department of Textile and Fiber Engineering , Indian Institute of Technology , Delhi 110016 , India
| | - Bapan Adak
- Department of Textile and Fiber Engineering , Indian Institute of Technology , Delhi 110016 , India
| | - Taruna Bansala
- Artie McFerrin Department of Chemical Engineering , Texas A&M University , College Station , Texas 77843 , United States
| | - Samrat Mukhopadhyay
- Department of Textile and Fiber Engineering , Indian Institute of Technology , Delhi 110016 , India
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33
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Highly transparent, weakly hydrophilic and biodegradable cellulose film for flexible electroluminescent devices. Carbohydr Polym 2020; 227:115366. [DOI: 10.1016/j.carbpol.2019.115366] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/08/2019] [Accepted: 09/20/2019] [Indexed: 12/28/2022]
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34
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Pinto SC, Gonçalves G, Sandoval S, López-Periago AM, Borras A, Domingo C, Tobias G, Duarte I, Vicente R, Marques PAAP. Bacterial cellulose/graphene oxide aerogels with enhanced dimensional and thermal stability. Carbohydr Polym 2019; 230:115598. [PMID: 31887938 DOI: 10.1016/j.carbpol.2019.115598] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 10/27/2019] [Accepted: 11/09/2019] [Indexed: 12/22/2022]
Abstract
We present a novel method for processing bacterial cellulose/graphene oxide (BC/GO) aerogels with multifunctional properties. The addition of a small amount of dimethyl sulfoxide (DMSO) to the aqueous dispersion of the nanomaterials during the gelification process affected the water freezing temperature of the system and thereby affecting the porous structure of the aerogel obtained after liophilization. The possibility to obtain small and elongated pore with axial orientation allowed a significant improvement of the structural stability of the aerogels. Moreover, the aerogels reduction by thermal treatment with ammonia gas induced crosslinking between the different nanophases, thus given an incremental factor for the mechanical performance of the aerogels under harsh conditions. The resulting aerogels also showed significant improvements in terms of thermal stability and electrical conductivity. These multifunctional BC/GO aerogels present high potential as sustainable and ecological alternative materials for lightweight packaging, filters for atmosphere and water treatment, or energy applications.
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Affiliation(s)
- Susana C Pinto
- TEMA, Mechanical Engineering Department, University of Aveiro, P-3810-193 Aveiro, Portugal
| | - Gil Gonçalves
- TEMA, Mechanical Engineering Department, University of Aveiro, P-3810-193 Aveiro, Portugal.
| | - Stefania Sandoval
- Institut de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
| | - Ana M López-Periago
- Institut de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
| | - Alejandro Borras
- Institut de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
| | - Concepción Domingo
- Institut de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
| | - Gerard Tobias
- Institut de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
| | - Isabel Duarte
- TEMA, Mechanical Engineering Department, University of Aveiro, P-3810-193 Aveiro, Portugal
| | - Romeu Vicente
- RISCO, Civil Engineering Department, University of Aveiro, P-3810-193 Aveiro, Portugal
| | - Paula A A P Marques
- TEMA, Mechanical Engineering Department, University of Aveiro, P-3810-193 Aveiro, Portugal.
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35
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Yuan H, Wang Y, Li T, Wang Y, Ma P, Zhang H, Yang W, Chen M, Dong W. Fabrication of thermally conductive and electrically insulating polymer composites with isotropic thermal conductivity by constructing a three-dimensional interconnected network. NANOSCALE 2019; 11:11360-11368. [PMID: 31166353 DOI: 10.1039/c9nr02491c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Efficient heat removal via thermal management materials has become one of the most critical challenges in the development of modern microelectronic devices. However, the conventional polymer-based thermally conductive composites with randomly distributed filler particles usually yield an undesired value because of the lack of efficient heat transfer pathways. Therefore, constructing a three-dimensional interconnected filler structure is greatly desirable for realizing high thermal conductivity enhancement in composites. Herein, graphene oxide (GO) was used as a thermally conductive filler due to its excellent thermal conductivity and coated with polydopamine (PDA) to enhance its electric insulation performance. A unique "particle-constructing" method was adopted for fabricating highly ordered three-dimensional GO-based polymer composites, throughout which the GO-PDA formed an intact, uniform and well-defined network structure. The composite, even with a very low GO-PDA loading of 0.96 vol%, exhibited both high in-plane (4.13 W m-1 K-1) and through-plane (4.56 W m-1 K-1) thermal conductivities and also presented excellent electrically insulating properties (>1014Ω cm). These composites have promising applications in heat dissipation of next-generation portable and collapsible electronic devices.
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Affiliation(s)
- Hao Yuan
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Yang Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Ting Li
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Yijie Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Piming Ma
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Hongji Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Weijun Yang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Mingqing Chen
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
| | - Weifu Dong
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
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36
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Feng CP, Chen LB, Tian GL, Wan SS, Bai L, Bao RY, Liu ZY, Yang MB, Yang W. Multifunctional Thermal Management Materials with Excellent Heat Dissipation and Generation Capability for Future Electronics. ACS APPLIED MATERIALS & INTERFACES 2019; 11:18739-18745. [PMID: 31026137 DOI: 10.1021/acsami.9b03885] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Thermal management materials (TMMs) used in electronic devices are crucial for future electronics and technologies such as flexible electronics and artificial intelligence (AI) technologies. As future electronics will work in a more complicated circumstance, the overheating and overcooling problems can exist in the same electronics while the common TMMs cannot meet the demand of thermal management for future electronics. In this work, nacre-mimetic graphene-based films with super flexibility and durability (in over 10,000 tensile cycles), excellent capability to dissipate excess heat (20.84 W/(m·K) at only 16-22 μm thickness), and outstanding heating performance to generate urgent heat for electronics under extremely cold conditions are fabricated by a facile solution casting method, and the fabricated composites are proved to be superior multifunctional TMMs for the thermal management in electronic chips. In addition, the application of the paper-like films with high in-plane thermal conductivity to a flexible heat spreader and film heater is demonstrated by simulation using a finite volume method, which shows the high importance of the in-plane thermal conductivity in thermal management of electronics.
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Affiliation(s)
- Chang-Ping Feng
- College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China
| | - Li-Bo Chen
- College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China
| | - Guo-Liang Tian
- College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China
| | - Shen-Shen Wan
- College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China
| | - Lu Bai
- College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China
| | - Rui-Ying Bao
- College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China
| | - Zheng-Ying Liu
- College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China
| | - Ming-Bo Yang
- College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China
| | - Wei Yang
- College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China
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37
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Xiaolin D, Zi W, Jinjing P, Wenli G, Qiao L, Lin L, Juming Y. High photocatalytic activity of Cu@Cu2O/RGO/cellulose hybrid aerogels as reusable catalysts with enhanced mass and electron transfer. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.02.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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38
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Ren L, Wang M, Lu S, Pan L, Xiong Z, Zhang Z, Peng Q, Li Y, Yu J. Tailoring Thermal Transport Properties of Graphene Paper by Structural Engineering. Sci Rep 2019; 9:4549. [PMID: 30872590 PMCID: PMC6418276 DOI: 10.1038/s41598-018-38106-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 11/09/2018] [Indexed: 11/09/2022] Open
Abstract
As a two-dimensional material, graphene has attracted increasing attention as heat dissipation material owing to its excellent thermal transport property. In this work, we fabricated sisal nanocrystalline cellulose/functionalized graphene papers (NPGs) with high thermal conductivity by vacuum-assisted self-assembly method. The papers exhibit in-plane thermal conductivity as high as 21.05 W m−1 K−1 with a thermal conductivity enhancement of 403% from the pure cellulose paper. The good thermal transport properties of NPGs are attributed to the strong hydrogen-bonding interaction between nanocrystalline cellulose and functionalized graphene and the well alignment structure of NPGs.
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Affiliation(s)
- Li Ren
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China
| | - Mengjie Wang
- Key Laboratory of Marine Materials and Relater Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Shaorong Lu
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China.
| | - Lulu Pan
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China
| | - Zhongqiang Xiong
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China
| | - Zuocai Zhang
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China
| | - Qingyuan Peng
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China
| | - Yuqi Li
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China
| | - Jinhong Yu
- Key Laboratory of Marine Materials and Relater Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
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Wang J, Mu X, Sun M. The Thermal, Electrical and ThermoelectricProperties of Graphene Nanomaterials. NANOMATERIALS 2019; 9:nano9020218. [PMID: 30736378 PMCID: PMC6410242 DOI: 10.3390/nano9020218] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/29/2019] [Accepted: 01/30/2019] [Indexed: 01/14/2023]
Abstract
Graphene, as a typical two-dimensional nanometer material, has shown its unique application potential in electrical characteristics, thermal properties, and thermoelectric properties by virtue of its novel electronic structure. The field of traditional material modification mainly changes or enhances certain properties of materials by mixing a variety of materials (to form a heterostructure) and doping. For graphene as well, this paper specifically discusses the use of traditional modification methods to improve graphene’s electrical and thermoelectrical properties. More deeply, since graphene is an atomic-level thin film material, its shape and edge conformation (zigzag boundary and armchair boundary) have a great impact on performance. Therefore, this paper reviews the graphene modification field in recent years. Through the change in the shape of graphene, the change in the boundary structure configuration, the doping of other atoms, and the formation of a heterostructure, the electrical, thermal, and thermoelectric properties of graphene change, resulting in broader applications in more fields. Through studies of graphene’s electrical, thermal, and thermoelectric properties in recent years, progress has been made not only in experimental testing, but also in theoretical calculation. These aspects of graphene are reviewed in this paper.
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Affiliation(s)
- Jingang Wang
- Computational Center for Property and Modification on Nanomaterials, College of Sciences, LiaoningShihua University, Fushun 113001, China.
| | - Xijiao Mu
- Center for Green Innovation, Beijing Key Laboratory for Magneto-Photoelectrical Composite and InterfaceScience, School of Mathematics and Physics, University of Science and Technology Beijing,Beijing 100083, China.
| | - Mengtao Sun
- Center for Green Innovation, Beijing Key Laboratory for Magneto-Photoelectrical Composite and InterfaceScience, School of Mathematics and Physics, University of Science and Technology Beijing,Beijing 100083, China.
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40
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Ge X, Liang WJ, Ge JF, Chen XJ, Ji JY, Pang XY, He M, Feng XM. Hexagonal Boron Nitride/Microfibril Cellulose/Poly(vinyl alcohol) Ternary Composite Film with Thermal Conductivity and Flexibility. MATERIALS (BASEL, SWITZERLAND) 2018; 12:E104. [PMID: 30598004 PMCID: PMC6337459 DOI: 10.3390/ma12010104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/15/2018] [Accepted: 12/21/2018] [Indexed: 11/17/2022]
Abstract
Microfibril cellulose (MFC), which is detrimental to soil cultivation and environmental protection, is derived from waste pineapple leaves. Hexagonal boron nitride (h-BN) was modified with polydopamine (PDA)-PDA@h-BN named pBN, and then combined with MFC to prepare a novel hybrid powder. The effect of PDA on h-BN and the binding effect between pBN and MFC were characterized by X-ray photoelectron spectroscopy (XPS), Thermogravimetric (TG), scanning electron microscopy (SEM), and Fourier Transform-Infrared (FT-IR). Poly (vinyl alcohol) (PVA) was used as an eco-friendly polymeric matrix to prepare a pBN-MFC-PVA composite film. The mechanical strength, hydrophobicity, and thermal conductivity of the film were studied and the results confirmed that h-BN was chemically modified with PDA and was uniformly distributed along the MFC. The thermal conductivity of the pBN-MFC-PVA composite film increased with the addition of a pBN-MFC novel powder. MFC acted as "guides" to mitigate the h-BN agglomerate. In addition to the possible usage in the pBN-MFC-PVA composite film itself, the pBN-MFC hybrid powder may be a potential filler candidate for manufacturing thermal interface materials and wearable devices or protective materials.
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Affiliation(s)
- Xin Ge
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Wei-Jie Liang
- School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Jian-Fang Ge
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Xun-Jun Chen
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Jian-Ye Ji
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Xiao-Yan Pang
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Ming He
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Xiao-Meng Feng
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
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41
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Wang X, Wu P. Fluorinated Carbon Nanotube/Nanofibrillated Cellulose Composite Film with Enhanced Toughness, Superior Thermal Conductivity, and Electrical Insulation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:34311-34321. [PMID: 30207455 DOI: 10.1021/acsami.8b12565] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Recently, graphene and carbon nanotubes (CNTs) promise considerable application potentials in the highly efficient thermal management of high-power devices because of their superb thermal conductivity (TC). However, the high electrical conductivity hampers their use in some fields where electrical insulating components are always required. Herein, to coordinate the thermal and electrical conductivity of CNT, fluorinated CNT (FCNT) was first used as a thermally conductive filler to prepare composite film with nanofibrillated celluloses (NFCs) via facile vacuum-assisted filtration. The obtained composite film shows a well-organized layered structure of the building blocks along the planar direction. Moreover, the one-dimensional structure of NFCs and the strong interaction of NFCs and FCNTs ensure sufficient connection between FCNT themselves and the reduced interfacial thermal resistance of NFCs/FCNTs, so that efficient heat transfer pathways can be well reserved, leading to simultaneous accessibility of high in-plane TC of 14.1 W m-1 K-1 and favorable electrical insulation property at an FCNT content of 35 wt %. Despite such a high FCNT loading, the strong interaction between NFCs and FCNTs enables the composite film to possess enhanced toughness, reliable mechanical strength, and flexibility. Therefore, we think that these outstanding comprehensive properties guarantee that the prepared composite film has promising applications in heat dissipation of next-generation portable and collapsible electronic devices.
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Affiliation(s)
- Xiongwei Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200433 , China
| | - Peiyi Wu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200433 , China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials , Donghua University , Shanghai 201620 , China
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42
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An F, Li X, Min P, Liu P, Jiang ZG, Yu ZZ. Vertically Aligned High-Quality Graphene Foams for Anisotropically Conductive Polymer Composites with Ultrahigh Through-Plane Thermal Conductivities. ACS APPLIED MATERIALS & INTERFACES 2018; 10:17383-17392. [PMID: 29706070 DOI: 10.1021/acsami.8b04230] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Although graphene-based thermal interface materials (TIMs) have great potentials in removing excess heat generated during highly efficient running of electronic devices, their practical applications are usually limited by their unsatisfactory thermal conductions, which are mainly caused by unsatisfactory dispersion and distribution, low loading, and low quality of graphene sheets, as well as the thermal interfacial resistance between graphene sheets and polymer matrix. Herein, we develop vertically aligned graphene hybrid foams (GHFs) with high densities by hydrothermal reduction of graphene oxide in the presence of high-quality graphene nanoplatelets (GNPs) followed by air-drying. The reduced graphene oxide sheets play an important role in constructing a vertically aligned interconnection network for accommodating GNPs during the hydrothermal reduction process, while the incorporated GNPs not only make the thermal conductance network denser but also prevent excessive shrinkage of the foams during air-drying. More critically, graphitization of GHF at 2800 °C removes the residual oxygen-containing groups and heals the defects of their reduced graphene oxide component, leading to high-quality graphene foams. The resultant vertically aligned high-quality graphene porous architecture with high density as an ideal thermal conductance network of TIMs is highly efficient in improving the thermal conductivity of its epoxy composite, which exhibits an ultrahigh through-plane thermal conductivity of 35.5 W m-1 K-1 at a graphene loading of 19.0 vol %. The excellent thermally conductive performance makes the annealed GHF/epoxy composites suitable for the thermal management.
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43
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Luo H, Dong J, Yao F, Yang Z, Li W, Wang J, Xu X, Hu J, Wan Y. Layer-by-Layer Assembled Bacterial Cellulose/Graphene Oxide Hydrogels with Extremely Enhanced Mechanical Properties. NANO-MICRO LETTERS 2018; 10:42. [PMID: 30393691 PMCID: PMC6199091 DOI: 10.1007/s40820-018-0195-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 02/27/2018] [Indexed: 05/25/2023]
Abstract
Uniform dispersion of two-dimensional (2D) graphene materials in polymer matrices remains challenging. In this work, a novel layer-by-layer assembly strategy was developed to prepare a sophisticated nanostructure with highly dispersed 2D graphene oxide in a three-dimensional matrix consisting of one-dimensional bacterial cellulose (BC) nanofibers. This method is a breakthrough, with respect to the conventional static culture method for BC that involves multiple in situ layer-by-layer assembly steps at the interface between previously grown BC and the culture medium. In the as-prepared BC/GO nanocomposites, the GO nanosheets are mechanically bundled and chemically bonded with BC nanofibers via hydrogen bonding, forming an intriguing nanostructure. The sophisticated nanostructure of the BC/GO leads to greatly enhanced mechanical properties compared to those of bare BC. This strategy is versatile, facile, scalable, and can be promising for the development of high-performance BC-based nanocomposite hydrogels.
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Affiliation(s)
- Honglin Luo
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, People's Republic of China
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Jiaojiao Dong
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, People's Republic of China
| | - Fanglian Yao
- School of Chemical Engineering, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Zhiwei Yang
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, People's Republic of China
| | - Wei Li
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, People's Republic of China
| | - Jie Wang
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, People's Republic of China
| | - Xinhua Xu
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Jian Hu
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, People's Republic of China.
| | - Yizao Wan
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, People's Republic of China.
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin University, Tianjin, 300072, People's Republic of China.
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44
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Wang Z, Kang H, Zhao S, Zhang W, Zhang S, Li J. Polyphenol-induced cellulose nanofibrils anchored graphene oxide as nanohybrids for strong yet tough soy protein nanocomposites. Carbohydr Polym 2018; 180:354-364. [DOI: 10.1016/j.carbpol.2017.09.102] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/11/2017] [Accepted: 09/30/2017] [Indexed: 12/11/2022]
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45
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Song N, Cui S, Hou X, Ding P, Shi L. Significant Enhancement of Thermal Conductivity in Nanofibrillated Cellulose Films with Low Mass Fraction of Nanodiamond. ACS APPLIED MATERIALS & INTERFACES 2017; 9:40766-40773. [PMID: 29125740 DOI: 10.1021/acsami.7b09240] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
High thermal conductive nanofibrillated cellulose (NFC) hybrid films based on nanodiamond (ND) were fabricated by a facile vacuum filtration technique. In this issue, the thermal conductivity (TC) on the in-plane direction of the NFC/ND hybrid film had a significant enhancement of 775.2% at a comparatively low ND content (0.5 wt %). The NFC not only helps ND to disperse in the aqueous medium stably but also plays a positive role in the formation of the hierarchical structure. ND could form a thermal conductive pathway in the hierarchical structures under the intermolecular hydrogen bonds. Moreover, the hybrid films composed of zero-dimensional ND and one-dimensional NFC exhibit remarkable mechanical properties and optical transparency. The NFC/ND hybrid films possessing superior TC, mechanical properties, and optical transparency can open applications for portable electronic equipment as a lateral heat spreader.
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Affiliation(s)
- Na Song
- Research Center of Nanoscience and Nanotechnology and ‡School of Materials Science and Engineering, Shanghai University , 99 Shangda Road, Shanghai 200444, PR China
| | - Siqi Cui
- Research Center of Nanoscience and Nanotechnology and ‡School of Materials Science and Engineering, Shanghai University , 99 Shangda Road, Shanghai 200444, PR China
| | - Xingshuang Hou
- Research Center of Nanoscience and Nanotechnology and ‡School of Materials Science and Engineering, Shanghai University , 99 Shangda Road, Shanghai 200444, PR China
| | - Peng Ding
- Research Center of Nanoscience and Nanotechnology and ‡School of Materials Science and Engineering, Shanghai University , 99 Shangda Road, Shanghai 200444, PR China
| | - Liyi Shi
- Research Center of Nanoscience and Nanotechnology and ‡School of Materials Science and Engineering, Shanghai University , 99 Shangda Road, Shanghai 200444, PR China
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