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Tang B, Cao M, Yang Y, Guan J, Yao Y, Yi J, Dong J, Wang T, Wang L. Synthesis of KH550-Modified Hexagonal Boron Nitride Nanofillers for Improving Thermal Conductivity of Epoxy Nanocomposites. Polymers (Basel) 2023; 15:polym15061415. [PMID: 36987196 PMCID: PMC10058683 DOI: 10.3390/polym15061415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/03/2023] [Accepted: 03/11/2023] [Indexed: 03/16/2023] Open
Abstract
In this work, KH550 (γ-aminopropyl triethoxy silane)-modified hexagonal boron nitride (BN) nanofillers were synthesized through a one-step ball-milling route. Results show that the KH550-modified BN nanofillers synthesized by one-step ball-milling (BM@KH550-BN) exhibit excellent dispersion stability and a high yield of BN nanosheets. Using BM@KH550-BN as fillers for epoxy resin, the thermal conductivity of epoxy nanocomposites increased by 195.7% at 10 wt%, compared to neat epoxy resin. Simultaneously, the storage modulus and glass transition temperature (Tg) of the BM@KH550-BN/epoxy nanocomposite at 10 wt% also increased by 35.6% and 12.4 °C, respectively. The data calculated from the dynamical mechanical analysis show that the BM@KH550-BN nanofillers have a better filler effectiveness and a higher volume fraction of constrained region. The morphology of the fracture surface of the epoxy nanocomposites indicate that the BM@KH550-BN presents a uniform distribution in the epoxy matrix even at 10 wt%. This work guides the convenient preparation of high thermally conductive BN nanofillers, presenting a great application potential in the field of thermally conductive epoxy nanocomposites, which will promote the development of electronic packaging materials.
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Affiliation(s)
- Bolin Tang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Miao Cao
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Yaru Yang
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Jipeng Guan
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Yongbo Yao
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Jie Yi
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Jun Dong
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Tianle Wang
- Zhejiang Provincial Key Laboratory for Cutting Tools, School of Materials Science and Engineering, Taizhou University, Taizhou 318000, China
- College of Chemical and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
- Correspondence: (T.W.); (L.W.)
| | - Luxiang Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
- Correspondence: (T.W.); (L.W.)
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Aghajani A, Ehsani M, Khajavi R, Kalaee M, Zaarei D. Conductive bio-epoxy/boron nitride nanocomposites: effect of combination of nanotubes and epichlorohydrin surface-modified nanosheets. IRANIAN POLYMER JOURNAL 2023. [DOI: 10.1007/s13726-023-01154-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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3
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Joy J, Winkler K, Bassa A, Vijayan P P, Jose S, Anas S, Thomas S. Miscibility, thermal degradation and rheological analysis of epoxy/MABS blends. SOFT MATTER 2022; 19:80-89. [PMID: 36468626 DOI: 10.1039/d2sm01074g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The effect of the addition of the methyl methacrylate acrylonitrile butadiene styrene (MABS) copolymer on the miscibility, thermal degradation and rheological properties of epoxy systems is described. Epoxy resin/MABS blends containing 5, 10, 15 and 20 phr MABS were prepared using the solution mixing technique. Homogenous blends obtained using this technique have undergone a polymerization reaction induced phase separation process by the introduction of the curing agent 4,4'-diaminodiphenyl sulfone (DDS). The isothermal rheology at four different temperatures, 150, 160, 170 and 180 °C, was used to examine the effect of MABS on the gelation and vitrification time. The evolution of storage modulus, loss modulus and tan delta was found to be closely related to the evolution of complex phase separation. The increase in the complex viscosity during curing was determined by in situ rheometry and theoretically analysed by fitting with the Williams-Landell-Ferry equation. An exponential increase in complex viscosity was observed, which was induced by cross-linking. The variation of Tg before and after curing was studied using DSC analysis and dynamic kinetic modeling of the curing process was carried out by utilizing dynamic DSC scans. Thermal stability studies of completely cured epoxy/MABS blends using thermogravimetric analysis revealed that all the blends and neat epoxy exhibited single step degradation. Thermal degradation kinetics was calculated using the Coats Redfern equation.
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Affiliation(s)
- Jomon Joy
- School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala, India.
- School of Energy Materials, Mahatma Gandhi University, Kottayam, India
| | | | - Anna Bassa
- Institute of Chemistry, University of Bialystok, Bialystok, Poland
| | | | - Seno Jose
- Department of Chemistry, Government College, Nattakom, Kerala, India
| | - Saithalavi Anas
- School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala, India.
- Advanced Molecular Materials Research Centre, Mahatma Gandhi University, Kottayam, Kerala, India
| | - Sabu Thomas
- School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala, India.
- School of Energy Materials, Mahatma Gandhi University, Kottayam, India
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4
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Jiao L, Zhao X, Guo Z, Chen Y, Wu Z, Yang Y, Wang M, Ge X, Lin M. Effect of γ irradiation on the properties of functionalized carbon-doped boron nitride reinforced epoxy resin composite. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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5
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Yuan S, Zhou L, Chen T, Wang D, Wang L. Thermally conductive h-BN/EHTPB/epoxy composites with enhanced toughness for on-board traction transformers. E-POLYMERS 2022. [DOI: 10.1515/epoly-2022-0076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The dry-type on-board traction transformer (DOBTT) has the characteristics of huge heat generation and high heat dissipation requirements, so it has higher requirements for heat dissipation performance of epoxy resin (EP) insulation. However, the toughness of the existing high thermal conductivity EP composite after being modified by inorganic particles is greatly reduced, and it is very easy to crack under the occasion of frequent vibration such as electric multiple units or electric locomotives, so it cannot be directly applied to the DOBTT. In this article, the composite using h-BN to improve the thermal conductivity, and epoxidized hydroxy-terminated polybutadiene (EHTPB) liquid rubber to improve the toughness was prepared. After characterization and testing, it was found that when the EHTPB content was between 10 and 15 phr, the elongation at break of the EP/h-BN/EHTPB composite could be increased by 47.9% and the impact strength could be increased by 47.8% compared with that without EHTPB. The thermal and electrical performances were still satisfactory, which has a potential in application of on-board electrical equipment.
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Affiliation(s)
- Shuai Yuan
- School of Electrical Engineering, Southwest Jiaotong University , Chengdu 611756 , China
| | - Lijun Zhou
- School of Electrical Engineering, Southwest Jiaotong University , Chengdu 611756 , China
| | - Tiandong Chen
- School of Electrical Engineering, Southwest Jiaotong University , Chengdu 611756 , China
| | - Dongyang Wang
- School of Electrical Engineering, Southwest Jiaotong University , Chengdu 611756 , China
| | - Lujia Wang
- School of Electrical and Power Engineering, China University of Mining and Technology , Xuzhou 221116 , China
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6
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Abhisha VS, Sisanth KS, Parameswaranpillai J, Pulikkalparambil H, Siengchin S, Thomas S, Stephen R. Comprehensive experimental investigations and theoretical predictions on the physical properties of natural rubber composites. J Appl Polym Sci 2022. [DOI: 10.1002/app.53197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Vakkoottil Sivadasan Abhisha
- Department of Chemistry, St. Joseph's College (Autonomous), Devagiri Affiliated to University of Calicut Calicut India
| | - Krishanagegham Sidharathan Sisanth
- School of Energy Materials and International and Inter University Centre for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
- Department of Chemical Sciences University of Johannesburg Johannesburg South Africa
| | | | - Harikrishnan Pulikkalparambil
- Department of Materials and Production Engineering, The Sirindhorn International Thai‐German Graduate School of Engineering (TGGS) King Mongkut's University of Technology North Bangkok Bangkok Thailand
| | - Suchart Siengchin
- Department of Materials and Production Engineering, The Sirindhorn International Thai‐German Graduate School of Engineering (TGGS) King Mongkut's University of Technology North Bangkok Bangkok Thailand
| | - Sabu Thomas
- School of Energy Materials and International and Inter University Centre for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
- School of Energy Materials and School of Chemical Sciences Mahatma Gandhi University Kottayam India
| | - Ranimol Stephen
- Department of Chemistry, St. Joseph's College (Autonomous), Devagiri Affiliated to University of Calicut Calicut India
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Minu S, Ramani R, Shekar RI, Kotresh TM, Padaki NV. Influence of dodecyl surfactants on the cross-linking, plasticization and damping behavior of epoxy novolac resins. SOFT MATTER 2022; 18:7380-7393. [PMID: 36125086 DOI: 10.1039/d2sm01126c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A series of modified epoxy novolac resins (ENRs) were prepared by incorporating dodecyl chain surfactants with polar groups such as amine, carboxylic acid, phenol, resorcinol and benzene sulfonic acid. Except for the case of benzene sulfonic acid, no macrophase separation is seen in any of the modified ENRs. The addition of these dodecyl surfactants to ENR hinders the cross-linking reaction as revealed from their dynamic and isothermal DSC curing measurements and reduced glass transition temperatures (Tg). The cross-link density evaluated from the storage modulus (E') in the rubbery region using DMTA measurements is found to be low with the addition of surfactants in agreement with their plasticization behavior. The stiffness of the materials obtained at low temperatures showed a moderate increase for ENRs with carboxylic acid and phenol surfactants. Upon heating, their storage modulus drops at low temperatures compared to ENR supporting the mechanism of plasticization in them. This high value of E' for the plasticized material in the glassy phase is different from the generally known behavior. Such unusually high storage modulus together with increased 'd' spacing from the XRD results seems to indicate 'partial segmental confinement' of epoxy chains. It is believed that high damping obtained in these two materials is due to 'partial segmental confinement' of epoxy chains because of interaction with lauric acid and phenolic surfactants and the associated internal and interfacial friction in them. Dielectric relaxation measurements support the plasticization process based on the high dielectric loss and ionic conductivity in the surfactant modified ENR, as compared to the pristine ones.
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Affiliation(s)
- Sathiadasan Minu
- Defence Bio-Engineering and Electromedical Laboratory (DEBEL), Defence Research and Development Organization (DRDO), ADE Campus, C. V. Raman Nagar, Bangalore-560 093, India.
| | - Ramasubbu Ramani
- Defence Bio-Engineering and Electromedical Laboratory (DEBEL), Defence Research and Development Organization (DRDO), ADE Campus, C. V. Raman Nagar, Bangalore-560 093, India.
| | - Ramakrishna Indu Shekar
- Defence Bio-Engineering and Electromedical Laboratory (DEBEL), Defence Research and Development Organization (DRDO), ADE Campus, C. V. Raman Nagar, Bangalore-560 093, India.
| | - Teggina Math Kotresh
- Defence Bio-Engineering and Electromedical Laboratory (DEBEL), Defence Research and Development Organization (DRDO), ADE Campus, C. V. Raman Nagar, Bangalore-560 093, India.
| | - Naveen Vijay Padaki
- Central Silk Technological Research Institute (CSTRI), Central Silk Board (CSB), BTM Layout, Bangalore-560 068, India
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8
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The Influence of Filler Loading and Alkaline Treatment on the Mechanical Properties of Palm Kernel Cake Filler Reinforced Epoxy Composites. Polymers (Basel) 2022; 14:polym14153063. [PMID: 35956578 PMCID: PMC9370578 DOI: 10.3390/polym14153063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/13/2022] [Accepted: 07/25/2022] [Indexed: 02/07/2023] Open
Abstract
The manufacturing of materials, in conjunction with green technology, emphasises the need to employ renewable resources to ensure long-term sustainability. Re-exploring renewable elements that can be employed as reinforcing materials in polymer composites has been a major endeavour. The research goal is to determine how well palm kernel cake filler (PKCF) performs in reinforced epoxy composites. In this study, PKCF with 100 mesh was mixed with epoxy resin (ER) in various ratios ranging from 10% to 40% by weight. Hand lay-up with an open mould is proposed as a method for fabricating the specimen test. Surface modification of PKCF with varying concentrations of NaOH (5 wt.% and 10 wt.%) will be contrasted with the untreated samples. Using Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC), the effect of alkaline treatment will be examined. The tensile and maximum flexural strength of the untreated PKCF/ER composite were determined in this work, with a 30 wt.% of PKCF having the highest tensile strength of 31.20 MPa and the highest flexural strength of 39.70 MPa. The tensile and flexural strength were reduced to 22.90 MPa and 30.50 MPa, respectively, when the filler loading was raised to 40 wt.%. A 5 wt.% alkali treatment for 1 h improved the composites’ mechanical characteristics. Lastly, an alkali treatment can aid in the resolution of the problem of inadequate matrix and filler interaction. Alkaline treatment is a popular and effective method for reducing the hydroxyl group in fillers and, thus, improving interfacial bonding. Overall, palm kernel cake is a promising material used as a filler in polymer composites.
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Sowińska-Baranowska A, Maciejewska M, Duda P. The Potential Application of Starch and Walnut Shells as Biofillers for Natural Rubber (NR) Composites. Int J Mol Sci 2022; 23:ijms23147968. [PMID: 35887318 PMCID: PMC9323199 DOI: 10.3390/ijms23147968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 02/01/2023] Open
Abstract
The goal of this study was application of corn starch and ground walnut shells in various amounts by weight as biofillers of natural rubber (NR) biocomposites. Additionally, ionic liquid 1-butyl-3-methylimidazolium chloride (BmiCl) and (3-aminopropyl)-triethoxysilane (APTES) were used to increase the activity of biofillers and to improve the curing characteristics of NR composites. The effect of biofillers used and their modification with aminosilane or ionic liquid on the curing characteristics of NR composites and their functional properties, including crosslink density, mechanical properties in static and dynamic conditions, hardness, thermal stability and resistance to thermo-oxidative aging were investigated. Starch and ground walnut shells were classified as inactive fillers, which can be used alternatively to commercial inactive fillers, e.g., chalk. BmiCl and APTES were successfully used to support the vulcanization and to improve the dispersion of biofillers in NR elastomer matrix. Vulcanizates with starch, especially those containing APTES and BmiCl, exhibited improved tensile properties due to the higher crosslink density and homogenous dispersion of starch, which resulted from BmiCl addition. NR filled with ground walnut shells demonstrated improved resistance to thermo-oxidative aging. It resulted from lignin present in walnut shells, the components of which belong to polyphenols, that have an antioxidant activity.
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10
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Maamoun AA, El-Wakil AA, El-Basheer TM. Enhancement of the mechanical and acoustical properties of flexible polyurethane foam/waste seashell composites for industrial applications. J CELL PLAST 2022. [DOI: 10.1177/0021955x221088392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The importance of this work is the use of waste seashells WSS (5, 10, 15, 20, 25, and 30 wt.%) as a bio-filler to enhance the mechanical and acoustical characteristics of flexible polyurethane foam (FPU). Petroleum-based polyol was partially replaced by 25% castor oil resulting in high renewable content. The WSS was characterized by X-ray photoelectron spectroscopy (XPS). The chemical structure and morphological features for castor oil-based flexible polyurethane waste seashells (CO-FPU-WSS) composites were detected using Fourier transform infrared (FTIR) and Scanning electron microscopy (SEM) techniques, respectively. Besides, the mechanical, non-acoustical and acoustical properties were investigated. The results indicated that bio-based FPU composites possessed better compressive strength than neat FPU foam. In addition, FPU composites enhance the sound absorption below 500 Hz. A 6 cm air gap behind the sample shifted the absorption toward 400 Hz (0.85) for CO-FPU-WSS 25% composite with a broader band. Thus, the FPU foam composite is considered a promising candidate for sound absorption applications such as for the automotive and building industries.
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Affiliation(s)
- AA Maamoun
- Department of Physics and Mathematics, Chemistry Division, Ain Shams University, Cairo, Egypt
| | - AA El-Wakil
- Department of Polymer Metrology and Technology, National Institute of Standards (NIS), El-Giza, Egypt
| | - Tarek M El-Basheer
- Department of Acoustics, Mass and Force Metrology Division, National Institute of Standards (NIS), El-Giza, Egypt
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11
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A simplified reinforcement and fracture mechanism analysis model of epoxy nanocomposites based on finite element simulation. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Pirayesh A, Qolizade N, Talebi S, Salami-Kalajahi M. Application of butane-1,4-diyl bis(2-mercaptoacetate) as dithiol prepolymer for preparation of polythiourethane and clay-based nanocomposites. J Sulphur Chem 2022. [DOI: 10.1080/17415993.2022.2059370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Amin Pirayesh
- Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
| | - Nazanin Qolizade
- Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
| | - Saeid Talebi
- Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
| | - Mehdi Salami-Kalajahi
- Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
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Maciejewska M, Sowińska-Baranowska A. Bromide and Chloride Ionic Liquids Applied to Enhance the Vulcanization and Performance of Natural Rubber Biocomposites Filled with Nanosized Silica. NANOMATERIALS 2022; 12:nano12071209. [PMID: 35407328 PMCID: PMC9000785 DOI: 10.3390/nano12071209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 03/30/2022] [Accepted: 04/02/2022] [Indexed: 12/04/2022]
Abstract
In this study, the possibility of using ionic liquids (ILs) as auxiliary substances improving the vulcanization and physicochemical properties of natural rubber (NR) biocomposites filled with nanosized silica was investigated. Hence, the influence of ILs with bromide and chloride anions and various cations, i.e., alkylimidazolium, alkylpyrrolidinium and alkylpiperidinium cation, on the curing characteristics and crosslink density of NR compounds was determined. Furthermore, the effect of nanosized silica and ILs on the functional properties of the obtained vulcanizates, including mechanical properties under static and dynamic conditions, hardness, thermal stability and resistance to thermo-oxidative aging, were explored. Applying nanosized silica improved the processing safety of NR compounds but significantly increased the optimal vulcanization time compared to the unfilled rubber. ILs significantly improved the cure characteristics of NR compounds by increasing the rate of vulcanization and the crosslink density of NR biocomposites. Consequently, the tensile strength and hardness of the vulcanizates significantly increased compared to that without ILs. Moreover, the use of nanosized silica and ILs had a favorable impact on the thermal stability of the vulcanizates and their resistance to prolonged thermo-oxidation.
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Thomas J, Thomas ME, Abraham J, Francis B, Ahmad Z, Patanair B, Saiter‐Fourcin A, Jaroszewski M, Rouxel D, Kalarikkal N, Thomas S. Exploring the reinforcing mechanism and micromechanical models for the interphase characteristics in melt mixed
XLPE‐fumed SiO
2
nanocomposites. J Appl Polym Sci 2022. [DOI: 10.1002/app.52366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jince Thomas
- Research and Post Graduate Department of Chemistry St. Berchmans College Changanassery India
- International and Inter University Centre for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
| | | | - Jiji Abraham
- Department of Chemistry Vimala College (Autonomous) Thrissur India
| | - Bejoy Francis
- Research and Post Graduate Department of Chemistry St. Berchmans College Changanassery India
| | - Zakiah Ahmad
- Faculty of Civil Engineering Universiti Teknologi Mara Shah Alam Malaysia
| | - Bindu Patanair
- UNIROUEN, INSA Rouen, CNRS, GPM Normandie Univ Rouen France
| | | | - Maciej Jaroszewski
- Department of Electrical Engineering Fundamentals Wroclaw University of Science and Technology Wroclaw Poland
| | - Didier Rouxel
- Institut Jean Lamour, UMR CNRS7198 Universit é de Lorraine Vandoeuvre‐Lès Nancy France
| | - Nandakumar Kalarikkal
- International and Inter University Centre for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
| | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
- School of Energy Materials Mahatma Gandhi University Kottayam India
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15
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Rasana N, Jayanarayanan K, Mohan HT, Keller T. Static and dynamic mechanical properties of nanosilica and multiwalled carbon nanotube reinforced acrylonitrile butadiene styrene composites: theoretical mechanism of nanofiller reinforcement. IRANIAN POLYMER JOURNAL 2021. [DOI: 10.1007/s13726-021-00962-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Self-assembled nanostructured viscoelastic and thermally stable high performance epoxy based nanomaterial for aircraft and automobile applications: An experimental and theoretical modeling approach. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Influence of the Silica Specific Surface Area and Ionic Liquids on the Curing Characteristics and Performance of Styrene-Butadiene Rubber Composites. MATERIALS 2021; 14:ma14185302. [PMID: 34576519 PMCID: PMC8471480 DOI: 10.3390/ma14185302] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/10/2021] [Accepted: 09/13/2021] [Indexed: 12/03/2022]
Abstract
In this work, we present the effect of silica’s specific surface area (180 m2·g−1 and 380 m2·g−1, respectively) on the crosslinking of styrene–butadiene rubber (SBR) composites, as well as their crosslink density and functional properties, such as thermal stability, damping behavior, resistance to thermo-oxidative aging, and tensile properties. Ionic liquids (ILs) with a bromide anion and different cations, i.e., 1-butyl-3-methylimidazolium (Bmi), 1-butyl-3-methylpyrrolidinium (Bmpyr), and 1-butyl-3-methylpiperidinium (Bmpip), were used to enhance the cure characteristics of SBR compounds and the functional properties of SBR vulcanizates. It was proven that apart from the silica’s specific surface area, the filler–polymer and filler–filler physical interactions have a significant impact on the vulcanization kinetics of silica-filled SBR composites. Additionally, the performed studies have shown that ILs positively affected the dispersion of silica’s particles and reduced their ability to form agglomerates in the elastomer matrix, which enhanced the functional properties of the SBR vulcanizates.
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18
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Aziz SAA, Mazlan SA, Ubaidillah U, Mohamad N, Sedlacik M, Nordin NA, Nazmi N. Loss Factor Behavior of Thermally Aged Magnetorheological Elastomers. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4874. [PMID: 34500964 PMCID: PMC8432649 DOI: 10.3390/ma14174874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 08/12/2021] [Accepted: 08/20/2021] [Indexed: 12/30/2022]
Abstract
Polymer composites have been widely used as damping materials in various applications due to the ability of reducing the vibrations. However, the environmental and surrounding thermal exposure towards polymer composites have affected their mechanical properties and lifecycle. Therefore, this paper presents the effect of material-temperature dependence on the loss factor and phase shift angle characteristics. Two types of unageing and aging silicone-rubber-based magnetorheological elastomer (SR-MRE) with different concentrations of carbonyl iron particles (CIPs), 30 and 60 wt%, are utilized in this study. The morphological, magnetic, and rheological properties related to the loss factor and phase shift angle are characterized using a low-vacuum scanning electron microscopy, and vibrating sample magnetometer and rheometer, respectively. The morphological analysis of SR-MRE consisting of 30 wt% CIPs revealed a smoother surface area when compared to 60 wt% CIPs after thermal aging due to the improvement of CIPs dispersion in the presence of heat. Nevertheless, the rheological analysis demonstrated inimitable rheological properties due to different in-rubber structures, shear deformation condition, as well as the influence of magnetic field. No significant changes of loss factor occurred at a low CIPs concentration, whilst the loss factor increased at a higher CIPs concentration. On that basis, it has been determined that the proposed changes of the polymer chain network due to the long-term temperature exposure of different concentrations of CIPs might explain the unique rheological properties of the unaged and aged SR-MRE.
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Affiliation(s)
- Siti Aishah Abdul Aziz
- Engineering Materials and Structures (eMast) iKohza, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia; (S.A.A.A.); (S.A.M.); (N.A.N.); (N.N.)
| | - Saiful Amri Mazlan
- Engineering Materials and Structures (eMast) iKohza, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia; (S.A.A.A.); (S.A.M.); (N.A.N.); (N.N.)
| | - Ubaidillah Ubaidillah
- Department of Mechanical Engineering, Faculty of Engineering, Universitas Sebelas Maret, Surakarta 57126, Indonesia;
| | - Norzilawati Mohamad
- Faculty of Engineering, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Malaysia
| | - Michal Sedlacik
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlín, Czech Republic;
- Department of Production Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic
| | - Nur Azmah Nordin
- Engineering Materials and Structures (eMast) iKohza, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia; (S.A.A.A.); (S.A.M.); (N.A.N.); (N.N.)
| | - Nurhazimah Nazmi
- Engineering Materials and Structures (eMast) iKohza, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia; (S.A.A.A.); (S.A.M.); (N.A.N.); (N.N.)
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Jiao L, Wang Y, Wu Z, Shen H, Weng H, Chen H, Huang W, Wang M, Ge X, Lin M. Effect of gamma and neutron irradiation on properties of boron nitride/epoxy resin composites. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2021.109643] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Maciejewska M, Sowińska A. Influence of Fillers and Ionic Liquids on the Crosslinking and Performance of Natural Rubber Biocomposites. Polymers (Basel) 2021; 13:polym13101656. [PMID: 34069680 PMCID: PMC8160702 DOI: 10.3390/polym13101656] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/14/2021] [Accepted: 05/17/2021] [Indexed: 12/15/2022] Open
Abstract
This work concerns the effect of fillers and ionic liquids on the cure characteristics of natural rubber (NR) compounds, as well as the mechanical and thermal properties of the vulcanizates. Three types of white filler were applied, such as cellulose, nanosized silica and hydrotalcite, to modify the performance of NR composites. Additionally, ionic liquids (ILs) with bromide anion and different cations, i.e., 1-butyl-3-methylimidazolium (Bmi) and 1-butyl-3-methylpyrrolidinium (Bmpyr), were used to improve the cure characteristics of NR compounds and functional properties of the vulcanizates. The type of filler and the structure of ILs were proved to affect the rheometric properties and cure characteristics of NR compounds as well as the performance of the NR vulcanizates. Owing to the adsorption of curatives onto the surface, silica reduced the activity of the crosslinking system, prolonging the optimal vulcanization time of NR compounds and reducing the crosslinking degree of the elastomer. However, silica-filled NR exhibited the highest thermal stability. Hydrotalcite increased the crosslink density and, consequently, the mechanical properties of the vulcanizates, but deteriorated their thermal stability. ILs beneficially influenced the cure characteristics of NR compounds, as well as the crosslink density and mechanical performance of the vulcanizates, particularly those filled with silica. Cellulose did not significantly affect the vulcanization of NR compounds and crosslink density of the vulcanizates compared to the unfilled elastomer, but deteriorated their tensile strength. On the other hand, cellulose improved the thermal stability and did not considerably alter the damping properties of the vulcanizates.
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A. R A, S SB, Shivaramu PD. Spectral characterization of morphological structure of organomodified montmorillonite clay-based epoxy nanocomposite. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2021. [DOI: 10.1080/1023666x.2021.1908031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Annappa A. R
- Department of Mechanical Engineering, University BDT College of Engineering, Davangere, India
| | - S. Basavarajappa S
- Department of Mechanical Engineering, University BDT College of Engineering, Davangere, India
| | - Prasanna D. Shivaramu
- Department of Applied Sciences, Visvesvaraya Technological University, Center for Postgraduate Studies, Muddenahalli, India
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22
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Lee YJ, La Y, Jeon OS, Lee HJ, Shin MK, Yang KH, You YJ, Park SY. Effects of boron nitride nanotube content on waterborne polyurethane-acrylate composite coating materials. RSC Adv 2021; 11:12748-12756. [PMID: 35423792 PMCID: PMC8696959 DOI: 10.1039/d1ra00873k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/18/2021] [Indexed: 11/29/2022] Open
Abstract
Waterborne polyurethane-acrylate (WPUA) is a promising eco-friendly material for adhesives and coatings such as paints and inks on substrates including fibers, leather, paper, rubber, and wood. Recently, WPUA and its composites have been studied to overcome severe problems such as poor water resistance, mechanical properties, chemical resistance, and thermal stability. In this study, composite films consisting of WPUA and rod-type boron nitride nanotubes (BNNTs), which have excellent intrinsic properties including high mechanical strength and chemical stability, were investigated. Specifically, BNNT/WPUA composite films were synthesized by mixing aqueous solutions of BNNT and WPUA via facile mechanical agitation without any organic solvents or additives, and the optimal content of BNNTs was determined. For the 2.5 wt% BNNT/WPUA composite, the BNNTs were found to be well distributed in the WPUA matrix and this material showed the overall best performance in terms of water resistance, thermal conductivity, and corrosion resistance. Owing to these advantageous properties and their environmentally friendly nature, BNNT/WPUA composite coating materials are expected to be applicable in a wide variety of industries.
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Affiliation(s)
- Yong Joon Lee
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Yunju La
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Ok Sung Jeon
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Hak Ji Lee
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Min Kyoon Shin
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Keun-Hyeok Yang
- Department of Architectural Engineering, Kyonggi University Suwon Gyeonggi-Do 16227 Republic of Korea
| | - Young Joon You
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Sang Yoon Park
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
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23
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Zhang HX, Seo DH, Lee DE, Yoon KB. Fabrication of highly thermal conductive PA6/hBN composites via in-situ polymerization process. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-020-02378-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Gültekin K, Uğuz G, Özel A. Improvements of the structural, thermal, and mechanical properties of structural adhesive with functionalized boron nitride nanoparticles. J Appl Polym Sci 2021. [DOI: 10.1002/app.50491] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kürşat Gültekin
- Department of Mechanical Engineering Ondokuz Mayıs University Samsun Turkey
| | - Gediz Uğuz
- Department of Chemical Engineering Ondokuz Mayıs University Samsun Turkey
| | - Adnan Özel
- Department of Mechanical Engineering Erzincan Binali Yıldırım University Erzincan Turkey
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25
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Remya VPR, Jose Varghese R, Parani S, Sakho EHM, Oluwafemi OS, Thomas S. Compatibilization of epoxidized triblock copolymer on the generation of self‐assembled nanostructured epoxies and their surface wettability. J Appl Polym Sci 2020. [DOI: 10.1002/app.49985] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Vasudevan Pillai R. Remya
- Department of Chemical Sciences (formerly Applied Chemistry) University of Johannesburg Johannesburg South Africa
- Centre for Nanomaterials Science Research University of Johannesburg Johannesburg South Africa
| | - Rajendran Jose Varghese
- Department of Chemical Sciences (formerly Applied Chemistry) University of Johannesburg Johannesburg South Africa
- Centre for Nanomaterials Science Research University of Johannesburg Johannesburg South Africa
| | - Sundararajan Parani
- Department of Chemical Sciences (formerly Applied Chemistry) University of Johannesburg Johannesburg South Africa
- Centre for Nanomaterials Science Research University of Johannesburg Johannesburg South Africa
| | - El Hadji Mamour Sakho
- Department of Chemical Sciences (formerly Applied Chemistry) University of Johannesburg Johannesburg South Africa
- Centre for Nanomaterials Science Research University of Johannesburg Johannesburg South Africa
| | - Oluwatobi S. Oluwafemi
- Department of Chemical Sciences (formerly Applied Chemistry) University of Johannesburg Johannesburg South Africa
- Centre for Nanomaterials Science Research University of Johannesburg Johannesburg South Africa
| | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology, School of Energy Materials Mahatma Gandhi University Kottayam India
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Joy J, George E, Haritha P, Thomas S, Anas S. An overview of boron nitride based polymer nanocomposites. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200507] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jomon Joy
- School of Chemical Sciences Mahatma Gandhi University Kottayam Kerala India
| | - Elssa George
- School of Chemical Sciences Mahatma Gandhi University Kottayam Kerala India
| | - Prakashan Haritha
- School of Chemical Sciences Mahatma Gandhi University Kottayam Kerala India
| | - Sabu Thomas
- School of Chemical Sciences Mahatma Gandhi University Kottayam Kerala India
- International and Inter University Centre for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam Kerala India
| | - Saithalavi Anas
- School of Chemical Sciences Mahatma Gandhi University Kottayam Kerala India
- Advanced Molecular Materials Research Centre Mahatma Gandhi University Kottayam Kerala India
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