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Kumar Singaravel D, Sharma S, Kumar P. Recent progress in experimental and molecular dynamics study of carbon nanotube reinforced rubber composites: a review. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2022.2084411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Dhinesh Kumar Singaravel
- Department of Mechanical Engineering, Dr. BR Ambedkar National Institute of Technology, Jalandhar, 144011, India
| | - Sumit Sharma
- Department of Mechanical Engineering, Dr. BR Ambedkar National Institute of Technology, Jalandhar, 144011, India
| | - Pramod Kumar
- Department of Mechanical Engineering, Dr. BR Ambedkar National Institute of Technology, Jalandhar, 144011, India
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2
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Khorshidi M, Asadpour S, Sarmast N, Dinari M. A review of the synthesis methods, properties, and applications of layered double hydroxides/carbon nanocomposites. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118399] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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3
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Farzaneh A, Rostami A, Nazockdast H. Mono‐filler and bi‐filler composites based on thermoplastic polyurethane, carbon fibers and carbon nanotubes with improved physicomechanical and engineering properties. POLYM INT 2021. [DOI: 10.1002/pi.6314] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Arman Farzaneh
- Department of Polymer Engineering and Color Technology Amirkabir University of Technology Tehran Iran
| | - Amir Rostami
- Department of Chemical Engineering, Faculty of Petroleum, Gas, and Petrochemical Engineering Persian Gulf University Bushehr 75169‐13817 Iran
| | - Hossein Nazockdast
- Department of Polymer Engineering and Color Technology Amirkabir University of Technology Tehran Iran
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van Tonder L, Labuschagné FJWJ. Systematic Literature Review of the Effect of Layered Double Hydroxides on the Mechanical Properties of Rubber. Polymers (Basel) 2021; 13:polym13213716. [PMID: 34771273 PMCID: PMC8587788 DOI: 10.3390/polym13213716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/14/2021] [Accepted: 10/18/2021] [Indexed: 11/29/2022] Open
Abstract
Layered double hydroxides (LDHs) have attracted interest as reinforcing fillers in elastomers due to their ease of synthesis and customisability. A systematic review was performed on the effect of LDHs on the mechanical properties of elastomers using the Scopus database. Of the 61 articles relevant to the search criteria, the majority were published on polyurethane (PU) and nitrile butadiene rubber (NBR). Mg-Al LDH was used in most of the studies and Zn-Al LDH was used second most common. LDH can act as a reinforcing filler, typically increasing tensile strength even at low concentrations, so it could be used as an alternative to traditional reinforcing fillers for elastomers. LDH can also be made a functional filler by selecting the right metals and interlayer anions. It was found that Mg-Al LDH and Zn-Al LDH can both participate in crosslinking reactions and can replace MgO and ZnO, respectively. Less Zn ions are required for crosslinking when LDH is used than when ZnO is used, making LDH more environmentally friendly. Organic modification is usually required to improve compatibility with the elastomer matrix, especially in non-polar elastomers. It enables exfoliation of the LDH and intercalation of polymer chains into the LDH interlayer to occur. Organic modifiers can also be used to functionalise the LDH. Stearic acid used in crosslinking systems can be replaced by stearate anions from stearate-modified LDH.
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Qian S, Cheng S, Liu Z, Xu F, Yu J. A rapid method to evaluate the chocolate smoothness based on the tribological measurement. J Texture Stud 2020; 51:882-890. [PMID: 32969047 DOI: 10.1111/jtxs.12562] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 12/30/2022]
Abstract
Cocoa is the primary ingredient in chocolate, and cocoa concentration attributes to the smoothness of the chocolate. Supporting this statement, we assessed the smoothness and melting properties of five chocolates of different cocoa concentration from three brands using the professional sensor evaluation and weight method, respectively. Artificial saliva was added to obtain the mixed chocolate solutions, and their viscosity and coefficient of friction (CoF) were measured for three rubbing pairs. The correlation of chocolate smoothness with their viscosities and average CoF (aCoF) was also discussed. The results indicated that the cocoa concentration significantly affected the smoothness of the chocolates among the three brands. The mixed solution of 50% chocolate could be a representative of oral processing, but their viscosities were not proficient enough to effectively characterize their smoothness. The aCoF of 50% chocolate solution could be rapid and effective to evaluate their smoothness. In addition, the Two-GCTPE rubbing pair was more suitable way to evaluate the smoothness of similar foods in the oral environment. The study results will provide a better insight into characterizing certain attribution of similar foods.
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Affiliation(s)
- Shanhua Qian
- School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu, China.,Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Shuai Cheng
- School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu, China
| | - Zhi Liu
- School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu, China
| | - Feifei Xu
- School of Food Science, Jiangnan University, Wuxi, Jiangsu, China
| | - Jinghu Yu
- School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu, China
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Navarro R, Seoane-Rivero R, Cuevas JM, Marcos-Fernandez Á. A novel strategy to polyurethanes with improved mechanical properties by photoactivation of amidocoumarin moieties. RSC Adv 2020; 10:29935-29944. [PMID: 35518219 PMCID: PMC9056287 DOI: 10.1039/d0ra06372j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 08/09/2020] [Indexed: 01/04/2023] Open
Abstract
An attractive strategy involving photodimerization of a novel amidocoumarin moiety is presented to prepare polyurethane coatings with excellent mechanical properties. Two families of polyurethanes containing these chromophore units into soft or hard segments were easily synthesized by inserting a small fraction of amidocoumarin-diol (5 wt% or 10 wt%). A systematic study has been carried out comparing hard segment, chromophore content and the influence of this amidocoumarin unit within the hard or soft segment. For all synthetized polymers, mechanical properties of the coatings have been evaluated before and after an excitation of the coumarin units with UV light. The results show that the insertion of coumarin into the hard segment leads to a considerable improvement of the mechanical properties after irradiation. Additionally, the photochemical activity of amidocoumarin was studied by UV-Vis and Raman spectroscopies. An attractive strategy involving photodimerization of a novel amidocoumarin moiety is presented to prepare polyurethane coatings with excellent mechanical properties.![]()
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Affiliation(s)
- Rodrigo Navarro
- Institute of Polymer Science and Technology (ICTP-CSIC) Juan de la Cierva 3 Madrid 28006 Spain .,Interdisciplinary Platform for "Sustainable Plastics towards a Circular Economy" (SUSPLAST-CSIC) Madrid Spain
| | - Rubén Seoane-Rivero
- GAIKER Technology Centre, Basque Research and Technology Alliance (BRTA) Parque Tecnológico de Bizkaia, Ed. 202 Zamudio E-487170 Spain
| | - José María Cuevas
- GAIKER Technology Centre, Basque Research and Technology Alliance (BRTA) Parque Tecnológico de Bizkaia, Ed. 202 Zamudio E-487170 Spain
| | - Ángel Marcos-Fernandez
- Institute of Polymer Science and Technology (ICTP-CSIC) Juan de la Cierva 3 Madrid 28006 Spain .,Interdisciplinary Platform for "Sustainable Plastics towards a Circular Economy" (SUSPLAST-CSIC) Madrid Spain
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7
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Qian S, Cheng S, Ni Z, Yu J, Zhang J. Influence of silane‐modified coconut shell powder on thermal and mechanical properties of thermoplastic elastomers. POLYM INT 2020. [DOI: 10.1002/pi.5990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shanhua Qian
- School of Mechanical EngineeringJiangnan University Wuxi China
- Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and TechnologyJiangnan University Wuxi China
| | - Shuai Cheng
- School of Mechanical EngineeringJiangnan University Wuxi China
| | - Zifeng Ni
- School of Mechanical EngineeringJiangnan University Wuxi China
| | - Jinghu Yu
- School of Mechanical EngineeringJiangnan University Wuxi China
| | - Jun Zhang
- School of Mechanical EngineeringJiangnan University Wuxi China
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Srivastava SK, Mishra YK. Nanocarbon Reinforced Rubber Nanocomposites: Detailed Insights about Mechanical, Dynamical Mechanical Properties, Payne, and Mullin Effects. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E945. [PMID: 30453541 PMCID: PMC6266093 DOI: 10.3390/nano8110945] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 10/25/2018] [Accepted: 11/08/2018] [Indexed: 11/23/2022]
Abstract
The reinforcing ability of the fillers results in significant improvements in properties of polymer matrix at extremely low filler loadings as compared to conventional fillers. In view of this, the present review article describes the different methods used in preparation of different rubber nanocomposites reinforced with nanodimensional individual carbonaceous fillers, such as graphene, expanded graphite, single walled carbon nanotubes, multiwalled carbon nanotubes and graphite oxide, graphene oxide, and hybrid fillers consisting combination of individual fillers. This is followed by review of mechanical properties (tensile strength, elongation at break, Young modulus, and fracture toughness) and dynamic mechanical properties (glass transition temperature, crystallization temperature, melting point) of these rubber nanocomposites. Finally, Payne and Mullin effects have also been reviewed in rubber filled with different carbon based nanofillers.
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Affiliation(s)
- Suneel Kumar Srivastava
- Inorganic Materials and Polymer Nanocomposite Laboratory, Department of Chemistry, Indian Institute of Technology, Kharagpur-72102, India.
| | - Yogendra Kumar Mishra
- Functional Nanomaterials, Institute for Materials Science, Kiel University, Kaiserstr, D-24143 Kiel, Germany.
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Metallocene-Catalyzed Copolymerization of Ethylene and 1-Hexene in the Presence of Graphene/MgAl LDH Nanofiller: Effect on the Activity, SCB, and Thermal Stability. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/s13369-018-3239-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Xie J, Zhang K, Wang Z, Zhao Q, Yang Y, Zhang Y, Ai S, Xu J. Biodegradable poly(vinyl alcohol)-based nanocomposite film reinforced with organophilic layered double hydroxides with potential packaging application. IRANIAN POLYMER JOURNAL 2017. [DOI: 10.1007/s13726-017-0561-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bhuyan B, Srivastava SK, Pionteck J. MWCNT/Hectorite hybrid filled acrylonitrile butadiene rubber/ ethylene-co-vinyl acetate blend nanocomposites: preparation and properties. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1309-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Bhuyan B, Roy A, Srivastava SK, Mittal V. Multiwalled carbon nanotube/montmorillonite hybrid filled ethylene‐co‐vinyl acetate nanocomposites with enhanced mechanical properties, thermal stability, and dielectric response. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24677] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- B. Bhuyan
- Department of ChemistryIndian Institute of TechnologyKharagpur721302 India
| | - A. Roy
- Department of ChemistryIndian Institute of Science Education and ResearchPune India
| | - S. K. Srivastava
- Department of ChemistryIndian Institute of TechnologyKharagpur721302 India
| | - V. Mittal
- Department of Chemical EngineeringThe Petroleum InstituteAbu Dhabi United Arab Emirates
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Karmakar A, Srivastava SK. Interconnected Copper Cobaltite Nanochains as Efficient Electrocatalysts for Water Oxidation in Alkaline Medium. ACS APPLIED MATERIALS & INTERFACES 2017; 9:22378-22387. [PMID: 28598596 DOI: 10.1021/acsami.7b03029] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The present work is focused on the protective-agent-free synthesis of interconnected copper cobaltite (Cu0.3Co2.7O4) nanochains by temperature-controlled solvothermal method followed by post-thermal treatment of the precursors. Furthermore, Cu0.3Co2.7O4 interconnected nanochains are employed as electrocatalyst for water oxidation in alkaline medium for the first time. Extensive studies of physiochemical properties showed the formation of interconnected 1D nanochains of Cu0.3Co2.7O4 exhibiting a larger specific surface area (139.5 m2 g-1) and enhanced electrochemical water oxidation ability. It delivered excellent mass activity (∼50.0 A g-1), high anodic current density (∼124.9 mA cm-2 at 1.75 V versus reversible hydrogen electrode), and turnover frequency (∼4.26 × 10-2 s-1) in 1.0 M KOH. These Cu0.3Co2.7O4 nanochains also demonstrated low overpotential (∼351 mV) and good cycling stability (1000 cycles) in strong alkaline media. The fabricated Cu0.3Co2.7O4 nanochains could be a good alternative to the commercial OER electrocatalysts (RuO2 and IrO2) and also advantageous to the development of efficient, cost-effective, and durable electrocatalysts for electrochemical water splitting.
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Affiliation(s)
- Ayon Karmakar
- Inorganic Materials and Nanocomposite Laboratory, Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, India
| | - Suneel Kumar Srivastava
- Inorganic Materials and Nanocomposite Laboratory, Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, India
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Ciardelli G, Decuzzi P. Nanomedicine Advancing from Bench to Bedside: the Role of Polymeric Materials. POLYM INT 2016. [DOI: 10.1002/pi.5140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering; Politecnico di Torino; Turin Italy
| | - Paolo Decuzzi
- Laboratory of Nanotechnology for Precision Medicine; Italian Institute of Technology; Genova Italy
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15
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Facile noncovalent assembly of MWCNT-LDH and CNF-LDH as reinforcing hybrid fillers in thermoplastic polyurethane/nitrile butadiene rubber blends. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-0926-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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