1
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Grover T, Guymon CA. Effect of Block Copolymer Self-Assembly on Phase Separation in Photopolymerizable Epoxy Blends. Macromolecules 2024; 57:4717-4728. [PMID: 38827959 PMCID: PMC11140735 DOI: 10.1021/acs.macromol.4c00192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 04/17/2024] [Accepted: 05/07/2024] [Indexed: 06/05/2024]
Abstract
Directing self-assembly of photopolymerizable systems is advantageous for controlling polymer nanostructure and material properties, but developing techniques for inducing ordered structure remains challenging. In this work, well-defined diblock or random copolymers were incorporated into cationic photopolymerizable epoxy systems to investigate the impact of copolymer architecture on self-assembly and phase separated nanostructures. Copolymers consisting of poly(hydroxyethyl acrylate)-x-(butyl acrylate) were prepared using photoiniferter polymerization to control functional group placement and molecular weight/polydispersity. Prepolymer configuration and concentration induced distinctly different effects on the resin flow and photopolymerization kinetics. The diblock copolymer self-assembled into nanostructured phases within the resin matrix, whereas the random copolymer formed an isotropic mixture. Rapid photopolymerization and ambient temperature conditions during cure facilitated retention of the self-assembled phases, leading to considerably different composite morphology and thermomechanical behavior. Increased loading of the diblock copolymer induced long-range ordered cocontinuous structures. Even with nearly identical prepolymer composition, controlled nanophase separation resulted in significantly enhanced tensile properties relative to those of the isotropic system. This work demonstrates that controlling phase separation with a block copolymer architecture allows access to nanostructured photopolymers with unique and enhanced properties.
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Affiliation(s)
- Tanner
L. Grover
- Department of Chemical and
Biochemical Engineering, University of Iowa, 4133 Seamans Center, Iowa City, Iowa 52242, United States
| | - C. Allan Guymon
- Department of Chemical and
Biochemical Engineering, University of Iowa, 4133 Seamans Center, Iowa City, Iowa 52242, United States
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2
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Tomiyoshi Y, Oya Y, Kawakatsu T, Okabe T. Reaction-induced morphological transitions in a blend of diblock copolymers and reactive monomers: dissipative particle dynamics simulation. SOFT MATTER 2023; 20:124-132. [PMID: 38054239 DOI: 10.1039/d3sm00959a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
The dissipative particle dynamics (DPD) method is applied to the morphological transitions of microphase-separated domains in a mixture of symmetric AB-diblock copolymers and reactive C-monomers, where polymerization and cross-linking reactions take place among C-monomers. The initial structure for the DPD simulation is an equilibrated cylindrical domain structure prepared by the density-biased Monte Carlo method with density profiles obtained from the self-consistent field theory. By introducing a cross-linking reaction among reactive C-monomers, we confirmed that the DPD simulation reproduces the morphological transitions observed in experiments, where the domain morphology changes due to segregation between A-blocks of diblock copolymers and cross-linking networks of C-monomers. When the cross-linking reaction of C-monomers is sufficiently fast compared to the deformation of the domains, the initial cylindrical domains are preserved, while the distance between the domains increases. On the other hand, when the formation of the cross-linking network is slow, the domains can deform and reconnect with each other in the developing cross-linking network. In this case, we observe morphological transitions from the initial domain morphology with a large-curvature interface to another domain morphology with a smaller-curvature interface, such as the transition from the cylindrical phase to the lamellar phase. We calculated the spatial correlations in the microphase-separated domains and found that such correlations are affected by the speed of the formation of the cross-linking network depending on whether the bridging between microphase-separated domains occurs in a nucleation and growth process or in a spinodal decomposition process.
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Affiliation(s)
- Yoshinori Tomiyoshi
- Center for Soft Matter Physics, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610, Japan.
| | - Yutaka Oya
- Department of Materials Science and Technology, Tokyo University of Science, Katsushika-Ku, 125-8585, Tokyo, Japan
| | - Toshihiro Kawakatsu
- Department of Physics, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Tomonaga Okabe
- Department of Aerospace Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8578, Japan
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3
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Jheng LC, Chang TY, Fan CT, Hsieh TH, Hsieh FM, Huang WJ. Toughening of epoxy thermosets by self-assembled nanostructures of amphiphilic comb-like random copolymers. RSC Adv 2023; 13:33484-33494. [PMID: 38025865 PMCID: PMC10646570 DOI: 10.1039/d3ra06349f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/09/2023] [Indexed: 12/01/2023] Open
Abstract
Amphiphilic comb-like random copolymers synthesized from poly(ethylene glycol) methyl ether methacrylate (PEGMMA) and stearyl methacrylate (SMA) with PEGMMA contents ranging between 30 wt% and 25 wt% were demonstrated to self-assemble into various well-defined nanostructures, including spherical micelles, wormlike micelles, and vesicle-like nanodomains, in anhydride-cured epoxy thermosets. In addition, the polymer blends of the comb-like random copolymer and poly(stearyl methacrylate) were prepared and incorporated into epoxy thermosets to form irregularly shaped nanodomains. Our research findings indicate that both the comb-like random copolymers and polymer blends are suitable as toughening modifiers for epoxy. When added at a concentration of 5 wt%, both types of modifiers lead to substantial improvements in the tensile toughness (>289%) and fracture toughness of epoxy thermosets, with minor reductions in their elastic modulus (<16%) and glass transition temperature (<6.1 °C). The fracture toughness evaluated in terms of the critical stress intensity factor (KIC) and the strain energy release rate (GIC) increased by more than 67% and 131% for the modified epoxy thermosets containing comb-like random copolymers.
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Affiliation(s)
- Li-Cheng Jheng
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology Kaohsiung Taiwan ROC +886 7 3830674 +886 7 3814526 ext.15148
| | - Ting-Yu Chang
- Department of Mold and Die Engineering, National Kaohsiung University of Science and Technology Kaohsiung Taiwan ROC
| | - Chin-Ting Fan
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology Kaohsiung Taiwan ROC +886 7 3830674 +886 7 3814526 ext.15148
| | - Tsung-Han Hsieh
- Department of Mold and Die Engineering, National Kaohsiung University of Science and Technology Kaohsiung Taiwan ROC
| | - Feng-Ming Hsieh
- Material and Chemical Research Laboratories, Industrial Technology Research Institute Hsinchu Taiwan ROC
| | - Wan-Ju Huang
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology Kaohsiung Taiwan ROC +886 7 3830674 +886 7 3814526 ext.15148
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4
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Lee K, Corrigan N, Boyer C. Polymerization Induced Microphase Separation for the Fabrication of Nanostructured Materials. Angew Chem Int Ed Engl 2023; 62:e202307329. [PMID: 37429822 DOI: 10.1002/anie.202307329] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 06/30/2023] [Accepted: 07/10/2023] [Indexed: 07/12/2023]
Abstract
Polymerization induced microphase separation (PIMS) is a strategy used to develop unique nanostructures with highly useful morphologies through the microphase separation of emergent block copolymers during polymerization. In this process, nanostructures are formed with at least two chemically independent domains, where at least one domain is composed of a robust crosslinked polymer. Crucially, this synthetically simple method is readily used to develop nanostructured materials with the highly coveted co-continuous morphology, which can also be converted into mesoporous materials by selective etching of one domain. As PIMS exploits a block copolymer microphase separation mechanism, the size of each domain can be tightly controlled by modifying the size of block copolymer precursors, thus providing unparalleled control over nanostructure and resultant mesopore sizes. Since its inception 11 years ago, PIMS has been used to develop a vast inventory of advanced materials for an extensive range of applications including biomedical devices, ion exchange membranes, lithium-ion batteries, catalysis, 3D printing, and fluorescence-based sensors, among many others. In this review, we provide a comprehensive overview of the PIMS process, summarize latest developments in PIMS chemistry, and discuss its utility in a wide variety of relevant applications.
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Affiliation(s)
- Kenny Lee
- Cluster for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
| | - Nathaniel Corrigan
- Cluster for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
- Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
| | - Cyrille Boyer
- Cluster for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
- Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
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5
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Delaite C, Bistac S, Rusu D. Influence of Block-Copolymers' Composition as Compatibilizers for Epoxy/Silicone Blends. Molecules 2023; 28:6300. [PMID: 37687128 PMCID: PMC10488889 DOI: 10.3390/molecules28176300] [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: 06/28/2023] [Revised: 07/27/2023] [Accepted: 08/18/2023] [Indexed: 09/10/2023] Open
Abstract
The objective of this study was to prepare crosslinked epoxy networks containing liquid silicone particles in order to improve their mechanical properties and obtain less brittle materials. Different copolymers were used as compatibilizers. These copolymers vary in their chemical composition and structure. All of the copolymers contain hydrophobic (PDMS sequences) and hydrophilic groups. The effect of their chemical structure and architecture on the morphology of the dispersed phase, and on the final physico-chemical and flexural characteristics of epoxy/silicone blends, was explored. The morphology of crosslinked formulations was studied by scanning electron microscopy (SEM), and the thermal characteristics (glass transition temperature, Tg, and curing exothermic peak) were determined by differential scanning calorimetry (DSC). The experimental results have shown that the average diameter and particle size distribution of silicone particles depend on the chemical structure and architecture of the compatibilizers. One copolymer has been identified as the best compatibilizer, allowing a lower mean diameter and particle size distribution in addition to the best mechanical properties of the final network (less brittle character). This study has consequently evidenced the possibility of creating in situ silicone capsules inside an epoxy network by adding tailored compatibilizers to epoxy/silicone formulations.
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Affiliation(s)
- Christelle Delaite
- Laboratoire de Photochimie et d’Ingenierie Macromoleculaires (LPIM EA 4567), Université de Haute-Alsace, F-68100 Mulhouse, France; (S.B.); (D.R.)
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6
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Remya VP, Parani S, Sakho EHM, Rajendran JV, Maluleke R, Lebepe TC, Masha S, Hameed N, Thomas S, Oluwafemi OS. Highly Toughened Nanostructured Self-Assembled Epoxy-Based Material—Correlation Study between Nanostructured Morphology and Fracture Toughness—Impact Characteristics. Polymers (Basel) 2023; 15:polym15071689. [PMID: 37050304 PMCID: PMC10097291 DOI: 10.3390/polym15071689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/12/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023] Open
Abstract
We present an efficient and effective method for preparing a novel self-assembled nanostructured material with high toughness and impact strength from a blend of di-glycidyl ether of bisphenol-A (DGEBA) and epoxidized poly(styrene-block-butadiene-block-styrene) (eSBS55) tri-block copolymer. The field emission scanning electron microscopy and transmission electron microscope results show the nanostructured morphological characteristics of the blends. This study achieved the highest fracture toughness, with a fracture toughness in the form of critical stress intensity factors (KIC) value of 2.54 MPa m1/2, in epoxy/block copolymer blends compared to previous works in the field. The impact strength also increased by 116% compared to neat epoxy. This is a major advancement in epoxy toughening due to the use of a single secondary phase. The resulting highly tough and impact-resistant material is a promising candidate for coating applications in industries such as flooring, building, aerospace, and automobiles.
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7
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Wang H, Mei H, Li L, Zheng S. Nanocomposites of Epoxy with One-dimensional Fibrous Poly(ε-caprolactam) Nanocrystals via Crystallization-driven Self-assembly. J Colloid Interface Sci 2022; 631:201-213. [DOI: 10.1016/j.jcis.2022.11.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/16/2022] [Accepted: 11/06/2022] [Indexed: 11/12/2022]
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8
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Santiago D, Serra À. Enhancement of Epoxy Thermosets with Hyperbranched and Multiarm Star Polymers: A Review. Polymers (Basel) 2022; 14:2228. [PMID: 35683901 PMCID: PMC9182725 DOI: 10.3390/polym14112228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/24/2022] [Accepted: 05/28/2022] [Indexed: 02/05/2023] Open
Abstract
Hyperbranched polymers and multiarm star polymers are a type of dendritic polymers which have attracted substantial interest during the last 30 years because of their unique properties. They can be used to modify epoxy thermosets to increase their toughness and flexibility but without adversely affecting other properties such as reactivity or thermal properties. In addition, the final properties of materials can be tailored by modifying the structure, molecular weight, or type of functional end-groups of the hyperbranched and multiarm star polymers. In this review, we focus on the modification of epoxy-based thermosets with hyperbranched and multiarm star polymers in terms of the effect on the curing process of epoxy formulations, thermal, mechanical, and rheological properties, and their advantages in fire retardancy on the final thermosets.
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Affiliation(s)
- David Santiago
- Eurecat–Chemical Technologies Unit, C/Marcel·lí Domingo 2, 43007 Tarragona, Spain
- Department of Mechanical Engineering, Universitat Rovira i Virgili, Av. Països Catalans 26, 43007 Tarragona, Spain
| | - Àngels Serra
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, C/Marcel·lí Domingo 1, 43007 Tarragona, Spain;
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9
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Arcos-Casarrubias JA, Vázquez-Torres H, Granados-Olvera JA, Cedeño AJ, Cervantes-Uc JM. Viscoelastic behavior and toughness of the DGEBA epoxy resin with 1,2-diaminocyclohexane: effect of functionalized poly(dimethylsiloxane), diglycidyl ether, PDMS-DGE, pre-reacted with 1,2-diaminocyclohexane. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03607-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Imanaka M, Narita I, Nakamura Y, Hisaka S, Yoshida S, Hara K. Effect of matrix deformability on the fracture properties of epoxy resins modified with core–shell and cross‐linked rubber particles. J Appl Polym Sci 2022. [DOI: 10.1002/app.52316] [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)
- Makoto Imanaka
- Osaka kyoiku University Osaka Japan
- Department of Mechanical and Physical Engineering Osaka City University Osaka Japan
| | - Ichihito Narita
- Division of Math, Sciences, and Information Technology in Education Osaka Kyoiku University Osaka Japan
| | - Yoshinobu Nakamura
- Department of Applied Chemistry Osaka Institute of Technology Osaka Japan
| | - Shigeki Hisaka
- Industrial Technology Center of Okayama Prefecture Okayama Japan
| | - Shun Yoshida
- Mechanical CAD Unit Polytechnic University Tokyo Japan
| | - Keisuke Hara
- Department of Mechanical and Physical Engineering Osaka City University Osaka Japan
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11
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Kim KH, Jeong S, Kim HJ. Numerical and experimental analyses of the crack propagation in nanocomposite thin-films by using dynamic particle difference methods. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Malafronte A, Hamley IW, Hermida-Merino D, Auriemma F, De Rosa C. Nanostructured dimethacrylate-based photopolymerizable systems by modification with diblock copolymers. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Li L, Peng W, Liu L, Zheng S. Toughening of epoxy by nanostructures with
ABA
triblock copolymers: An influence of organosilicon modification of block copolymer. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lei Li
- College of Chemistry and Chemical Engineering and the State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai China
| | - Wenjun Peng
- College of Chemistry and Chemical Engineering and the State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai China
| | - Liyue Liu
- College of Chemistry and Chemical Engineering and the State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai China
| | - Sixun Zheng
- College of Chemistry and Chemical Engineering and the State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai China
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14
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Huang YS, Huang CF. Synthesis of well-defined PMMA-b-PDMS-b-PMMA triblock copolymer and study of its self-assembly behaviors in epoxy resin. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Hajiali F, Tajbakhsh S, Marić M. Epoxidized Block and Statistical Copolymers Reinforced by Organophosphorus-Titanium-Silicon Hybrid Nanoparticles: Morphology and Thermal and Mechanical Properties. ACS OMEGA 2021; 6:11679-11692. [PMID: 34056323 PMCID: PMC8153999 DOI: 10.1021/acsomega.1c00993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/01/2021] [Indexed: 06/12/2023]
Abstract
Glycidyl methacrylate (GMA) and a mixture of alkyl methacrylates (average chain length of 13 carbons; termed C13MA; derived from vegetable oils) were copolymerized by nitroxide-mediated polymerization to form epoxidized statistical and block copolymers with similar compositions (F GMA ∼0.8), which were further cross-linked by a bio-based diamine. Hybrid plate-like nanoparticles containing organophosphorus-titanium-silicon (PTS) with an average size of ∼130 nm and high decomposition temperature (485 °C) were synthesized via a hydrothermal reaction to serve as additives to simultaneously enhance the thermal and mechanical properties of the blend. Nanocomposites filled with PTS were prepared at different filler-loading levels (0.5, 2, 4 wt %). Transmission electron microscopy (TEM) of the cured block copolymer displayed reaction-induced macrophase-separated domains. TEM also showed an effective dispersion of PTS hybrids in the matrix without intense agglomeration. Thermogravimetric analysis at different heating rates revealed the activation energy of poly (GMA-stat-C13MA) at maximum decomposition increased from 143.5 to 327.2 kJ mol-1 with 4 wt % PTS. Decomposition temperature and char residue improved 12 °C and ∼7 wt %, respectively, and T g increased 12 °C by adding 4 wt % PTS. Targeting various PTS concentrations enabled tuning of the tensile modulus (up to 75%), tensile strength (up to 46%), and storage modulus in both glassy state (up to 59%) and rubbery plateau regions (up to 88%). Oscillatory frequency sweeps indicated that PTS makes the storage modulus frequency dependent, suggesting that the inclusion of the nanoparticles alters the relaxation of the surrounding matrix polymer.
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Affiliation(s)
| | - Saeid Tajbakhsh
- Department of Chemical Engineering, McGill University, 3610 University St, Montreal, Quebec H3A 0C5, Canada
| | - Milan Marić
- Department of Chemical Engineering, McGill University, 3610 University St, Montreal, Quebec H3A 0C5, Canada
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16
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Gutiérrez González J, Fernández Leyes MD, Ritacco HA, Schroeder WF, Zucchi IA. Long PEO-based nanoribbons generated in a polystyrene matrix through reaction-induced microphase separation followed by a fast crystallization process. SOFT MATTER 2021; 17:2279-2289. [PMID: 33475128 DOI: 10.1039/d0sm02058c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A dispersion of elongated nanostructures with a high aspect ratio in polymer matrices has been reported to provide a material with valuable properties such as mechanical strength, barrier effect and shape memory, among others. In this study, we show the procedure to achieve a distribution of elongated crystalline nanodomains in a PS matrix employing the self-assembly of amphiphilic block copolymers (BCP). The selected BCP was polystyrene-block-polyethylene oxide (PS-b-PEO). It was dissolved at 10 wt% in a styrene (St) monomer and the blend was slowly photopolymerized over four days at room temperature, until the reaction was arrested by vitrification. This blend was initially homogeneous and nanostructuration took place in an early stage of the polymerization as a result of the microphase separation (MS) of PEO blocks. Due to its high tendency to crystallize, demixed PEO blocks crystallized almost concomitantly with MS triggering the growing of the nanostructures. Thus, the time window between the onset of crystallization and the vitrification of the matrix was almost four days, allowing all micelles to have the opportunity to couple to a growing nanostructure. As a result, a population of nanoribbons with average lengths surpassing 10 μm dispersed in a PS matrix was obtained. It was demonstrated that these ribbon-like nanostructures are preserved as long as the heating temperature is located below the Tg of the matrix. If the material is heated above this temperature, softening of the matrix allows the breakup of the molten PEO nanoribbons due to Plateau-Rayleigh instability.
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Affiliation(s)
- Jessica Gutiérrez González
- Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), Av. Cristóbal Colón 10850, B7606WV Mar del Plata, Argentina.
| | - Marcos D Fernández Leyes
- Departamento de Física, Universidad Nacional del Sur (UNS), Instituto de Física del Sur - IFISUR (UNS-CONICET), Bahía Blanca, Argentina
| | - Hernán A Ritacco
- Departamento de Física, Universidad Nacional del Sur (UNS), Instituto de Física del Sur - IFISUR (UNS-CONICET), Bahía Blanca, Argentina
| | - Walter F Schroeder
- Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), Av. Cristóbal Colón 10850, B7606WV Mar del Plata, Argentina.
| | - Ileana A Zucchi
- Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), Av. Cristóbal Colón 10850, B7606WV Mar del Plata, Argentina.
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17
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Liu DY, Krogstad DV. Self-Assembly and Phase Transformation of Block Copolymer Nanostructures in Ionic Liquid-Cured Epoxy. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02214] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deborah Y. Liu
- Applied Research Institute, University of Illinois at Urbana-Champaign, Champaign, Illinois 61820-0910, United States
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Champaign, Illinois 61820-0910, United States
| | - Daniel V. Krogstad
- Applied Research Institute, University of Illinois at Urbana-Champaign, Champaign, Illinois 61820-0910, United States
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Champaign, Illinois 61820-0910, United States
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18
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Li L, Ge W, Zhao B, Adeel M, Mei H, Zheng S. Polyhydroxyurethane thermosets from novolac epoxide: Synthesis and its nanostructured blends with poly(trifluoroethylacrylate)-block-poly(N-vinylpyrrolidone) diblock copolymer. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Nanostructured thermosets involving epoxy and poly(ionic liquid)-Containing diblock copolymer. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Chen S, Alcouffe P, Rousseau A, Gérard JF, Lortie F, Zhu J, Bernard J. Design of Semicrystalline Elastomeric Glassy Triblock Copolymers from Oligoamide-Based RAFT Agents. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Senbin Chen
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
- Univ Lyon, INSA Lyon, CNRS, IMP UMR 5223, F-69621 Villeurbanne, France
| | - Pierre Alcouffe
- Univ Lyon, INSA Lyon, CNRS, IMP UMR 5223, F-69621 Villeurbanne, France
| | - Alain Rousseau
- Univ Lyon, INSA Lyon, CNRS, IMP UMR 5223, F-69621 Villeurbanne, France
| | | | - Frédéric Lortie
- Univ Lyon, INSA Lyon, CNRS, IMP UMR 5223, F-69621 Villeurbanne, France
| | - Jintao Zhu
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Julien Bernard
- Univ Lyon, INSA Lyon, CNRS, IMP UMR 5223, F-69621 Villeurbanne, France
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21
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Henry MM, Thomas S, Alberts M, Estridge CE, Farmer B, McNair O, Jankowski E. General-Purpose Coarse-Grained Toughened Thermoset Model for 44DDS/DGEBA/PES. Polymers (Basel) 2020; 12:polym12112547. [PMID: 33143261 PMCID: PMC7693565 DOI: 10.3390/polym12112547] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/23/2020] [Accepted: 10/23/2020] [Indexed: 12/26/2022] Open
Abstract
The objective of this work is to predict the morphology and material properties of crosslinking polymers used in aerospace applications. We extend the open-source dybond plugin for HOOMD-Blue to implement a new coarse-grained model of reacting epoxy thermosets and use the 44DDS/DGEBA/PES system as a case study for calibration and validation. We parameterize the coarse-grained model from atomistic solubility data, calibrate reaction dynamics against experiments, and check for size-dependent artifacts. We validate model predictions by comparing glass transition temperatures measurements at arbitrary degree of cure, gel-points, and morphology predictions against experiments. We demonstrate for the first time in molecular simulations the cure-path dependence of toughened thermoset morphologies.
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Affiliation(s)
- Michael M. Henry
- Micron School of Materials Science and Engineering, Boise State University, Boise, ID 83725, USA; (M.M.H.); (S.T.); (M.A.)
| | - Stephen Thomas
- Micron School of Materials Science and Engineering, Boise State University, Boise, ID 83725, USA; (M.M.H.); (S.T.); (M.A.)
| | - Mone’t Alberts
- Micron School of Materials Science and Engineering, Boise State University, Boise, ID 83725, USA; (M.M.H.); (S.T.); (M.A.)
| | | | | | - Olivia McNair
- The Boeing Company, St. Louis, MO 63134, USA; (C.E.E.); (O.M.)
| | - Eric Jankowski
- Micron School of Materials Science and Engineering, Boise State University, Boise, ID 83725, USA; (M.M.H.); (S.T.); (M.A.)
- Correspondence:
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22
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Jheng L, Wang I, Hsieh T, Fan C, Hsiao C, Wu C, Leu M, Chang T. Toughening of epoxy thermosets with nano‐sized or micron‐sized domains of poly(ethylene oxide)‐
b
‐poly
(butadiene‐
co
‐acrylonitrile)‐
b
‐poly
(ethylene oxide) triblock copolymers synthesized using
room temperature
ester coupling reaction. J Appl Polym Sci 2020. [DOI: 10.1002/app.50096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Li‐Cheng Jheng
- Department of Chemical and Materials Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan
- Photo‐Sensitive Material Advanced Research and Technology Center National Kaohsiung University of Science and Technology Kaohsiung Taiwan
| | - I‐Hsin Wang
- Department of Mold and Die Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan
| | - Tsung‐Han Hsieh
- Department of Mold and Die Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan
| | - Chin‐Ting Fan
- Department of Chemical and Materials Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan
| | - Chi‐Hui Hsiao
- Department of Materials Science and Engineering National Cheng‐Kung University Tainan Taiwan
| | - Chien‐Pang Wu
- Department of Mold and Die Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan
| | - Ming‐Tsong Leu
- Material and Chemical Research Laboratories Industrial Technology Research Institute Hsinchu Taiwan
| | - Ting‐Yu Chang
- Department of Mold and Die Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan
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23
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Fu Q, Tan J, Han C, Zhang X, Fu B, Wang F, Zhu X. Synthesis and curing properties of castor oil‐based triglycidyl ether epoxy resin. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.4982] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Qinghe Fu
- College of Chemical Engineering Nanjing Forestry University Nanjing Jiangsu China
| | - Jihuai Tan
- College of Chemical Engineering Nanjing Forestry University Nanjing Jiangsu China
| | - Changhao Han
- College of Chemical Engineering Nanjing Forestry University Nanjing Jiangsu China
| | - Xiaoxiang Zhang
- College of Chemical Engineering Nanjing Forestry University Nanjing Jiangsu China
| | - Bo Fu
- College of Chemical Engineering Nanjing Forestry University Nanjing Jiangsu China
| | - Fang Wang
- College of Chemical Engineering Nanjing Forestry University Nanjing Jiangsu China
| | - Xinbao Zhu
- College of Chemical Engineering Nanjing Forestry University Nanjing Jiangsu China
- Anhui Engineering Research Center of Epoxy Resin and Additives Huangshan Anhui China
- Anhui XinYuan Chemical Co., Ltd Huangshan Anhui China
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24
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Zhou Q, Liu Q, Yu Y, Zhuang Y, Lv Y, Xiao H, Song N, Ni L. Morphological evolution and mechanical properties of an “anchor chain” nanodomain structure of a reactive amphiphilic triblock copolymer in epoxy resin. Polym Chem 2020. [DOI: 10.1039/d0py00365d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A epoxy-reactive poly(3,4-epoxycyclohexylmethyl methacrylate)-block-poly(dimethylsiloxane)-block-poly(3,4-epoxycyclohexylmethyl methacrylate) (PMETHB-b-PDMS-b-PMETHB) triblock can self-assemble in epoxy resin to form “anchor-chain” nanodomains.
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Affiliation(s)
- Quan Zhou
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Qi Liu
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yueru Yu
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yuxiao Zhuang
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yizhe Lv
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Hanliang Xiao
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Ning Song
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Lizhong Ni
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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25
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Adeel M, Zhao B, Xu S, Zheng S. Investigation of Azobenzene Photoisomerization Effect on Morphologies and Properties of Nanostructured Thermosets Involving Epoxy and a Diblock Copolymer. J Phys Chem B 2019; 123:10110-10123. [PMID: 31644292 DOI: 10.1021/acs.jpcb.9b08017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This work highlights the effect of azobenzene photoisomerization on the morphologies and properties of the nanostructured thermosets involving epoxy and a diblock copolymer. First, a diblock copolymer composed of poly(ethylene oxide) (PEO) and poly(6-(4-(4-cyanophenylazo)phenoxy)hexyl methacrylate) (PCPHM) was synthesized, and this diblock copolymer was composed of an epoxy-philic block (i.e., PEO) and an azobenzene moiety-beating block (viz., PCPHM). This diblock copolymer was introduced into epoxy to obtain the nanostructured thermosets via reaction-induced microphase separation approach. To control the configuration of azobenzene moieties of the PCPHM block, the curing reactions were performed in the absence and/or presence of ultraviolet (UV) irradiation, respectively. It was found that, without UV irradiation, the PCPHM microdomains were generated with the trans isomers of azobenzene. Under UV irradiation, however, the PCPHM microdomains were formed with the cis configuration of azobenzene moieties. The ultraviolet-visible light (UV-vis) spectroscopy showed that the trans and cis configurations of azobenzene moieties were significantly fixed with the occurrence of curing reactions. The photoluminescent measurements showed that the nanostructured thermosets with trans-azobenzene moieties can emit fluorescence, which was in sharp contrast to those with cis-azobenzene moieties. The results of small-angle X-ray and atomic force microscopy showed that the nanostructured thermosets with trans and cis isomers of azobenzene moieties had quite different morphologies. It was found that the sizes of the PCPHM microdomains with cis configuration of azobenzene moieties were significantly larger than those with trans configuration. The difference in configuration of azobenzene moieties also resulted in the difference in glass-transition temperatures and dielectric properties of the materials. The results suggest a new approach to modulate the morphologies and physical properties of the nanostructured thermosets by means of photoisomerization of azobenzene moieties.
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Affiliation(s)
- Muhammad Adeel
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Bingjie Zhao
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Sen Xu
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Sixun Zheng
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
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26
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Wang J, Zhang X, Jiang L, Qiao J. Advances in toughened polymer materials by structured rubber particles. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2019.101160] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Ding H, Zhao B, Mei H, Li L, Zheng S. Toughening of epoxy thermosets with polystyrene‐
block
‐polybutadiene‐
block
‐ polystyrene triblock copolymer via formation of nanostructures. POLYM ENG SCI 2019. [DOI: 10.1002/pen.25252] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hao Ding
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University Shanghai 200240 People's Republic of China
| | - Bingjie Zhao
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University Shanghai 200240 People's Republic of China
| | - Honggang Mei
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University Shanghai 200240 People's Republic of China
| | - Lei Li
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University Shanghai 200240 People's Republic of China
| | - Sixun Zheng
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University Shanghai 200240 People's Republic of China
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28
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Uhlig C, Kahle O, Schäfer O, Ewald D, Oswaldbauer H, Bauer J, Bauer M. Blends of tri-block copolymers and addition curing resins: Influence of block copolymer-resin compatibility on toughness and matrix properties on toughenability. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.06.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Affiliation(s)
- Jaworski C. Capricho
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, Australia
| | - Bronwyn Fox
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, Australia
| | - Nishar Hameed
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, Australia
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30
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Adeel M, Zhao B, Xu S, Zheng S. Fluorescence Enhancement Induced by Curing Reaction in Nanostructured Epoxy Thermosets Containing a Diblock Copolymer. J Phys Chem B 2019; 123:6282-6289. [PMID: 31313587 DOI: 10.1021/acs.jpcb.9b00925] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this work, a novel curing-induced fluorescence (FL) enhancement phenomenon in the nanostructuring process of epoxy thermosets was investigated. Toward this end, a diblock copolymer composed of poly(ethylene oxide) and poly(((4-vinylphenyl)ethene-1,1,2-triyl)tribenzene) (PTPEE) blocks was introduced into epoxy thermosets. Before curing reaction, the mixtures of epoxy precursors with the diblock copolymer only emitted feeble FL under ultra-visible (UV) irradiation. However, photoluminescence was significantly enhanced after the curing reaction was carried out. It was found that the novel FL enhancement phenomenon resulted from the aggregation-induced emission behavior of PTPEE blocks, which was triggered by curing reaction. In the nanostructured thermosets, the fluorophore blocks (viz. PTPEE) of this diblock copolymer were segregated into aggregates, that is, a reaction-induced microphase separation occurred. Owing to the generation of PTPEE microdomains, the epoxy nanocomposites significantly displayed the enhanced dielectric constants due to the promoted contribution from electron polarizations via π-π conjugation in the materials.
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Affiliation(s)
- Muhammad Adeel
- School of Chemistry and Chemical Engineering and the State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , Shanghai 200240 , P. R. China
| | - Bingjie Zhao
- School of Chemistry and Chemical Engineering and the State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , Shanghai 200240 , P. R. China
| | - Sen Xu
- School of Chemistry and Chemical Engineering and the State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , Shanghai 200240 , P. R. China
| | - Sixun Zheng
- School of Chemistry and Chemical Engineering and the State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , Shanghai 200240 , P. R. China
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31
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Mishra K, Babu LK, Dhakal D, Lamichhane P, Vaidyanathan RK. The effect of solvent on the mechanical properties of polyhedral oligomeric silsesquioxane (POSS)–epoxy nanocomposites. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0918-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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32
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Synthesis of a Novel Mesoporous Inorganic–Organic Hybrid and Its Application in Epoxy Resins. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01160-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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33
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Photopolymerization-assisted self-assembly as a strategy to obtain a dispersion of very high aspect ratio nanostructures in a polystyrene matrix. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.10.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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34
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A New Way of Toughening of Thermoset by Dual-Cured Thermoplastic/Thermosetting Blend. MATERIALS 2019; 12:ma12030548. [PMID: 30759815 PMCID: PMC6384865 DOI: 10.3390/ma12030548] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/31/2019] [Accepted: 02/05/2019] [Indexed: 11/16/2022]
Abstract
The work aims at establishing the optimum conditions for dual thermal and electron beam curing of thermosetting systems modified by styrene/butadiene (SB)-based triblock copolymers in order to develop transparent and toughened materials. The work also investigates the effects of curing procedures on the ultimate phase morphology and mechanical properties of these thermoset–SB copolymer blends. It was found that at least 46 mol% of the epoxidation degree of the SB copolymer was needed to enable the miscibility of the modified block copolymer into the epoxy resin. Hence, an electron beam curing dose of ~50 kGy was needed to ensure the formation of micro- and nanostructured transparent blends. The micro- and nanophase-separated thermosets obtained were analyzed by optical as well as scanning and transmission electron microscopy. The mechanical properties of the blends were enhanced as shown by their impact strengths, indentation, hardness, and fracture toughness analyses, whereby the toughness values were found to mainly depend on the dose. Thus, we have developed a new route for designing dual-cured toughened micro- and nanostructured transparent epoxy thermosets with enhanced fracture toughness.
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35
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Varley RJ, Dao B, Tucker S, Christensen S, Wiggins J, Dingemans T, Vogel W, Marchetti M, Madzarevic Z. Effect of aromatic substitution on the kinetics and properties of epoxy cured tri‐phenylether amines. J Appl Polym Sci 2019. [DOI: 10.1002/app.47383] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Russell J. Varley
- Institute for Frontier Materials, Deakin University Waurn Ponds Victoria 3216 Australia
| | - Buu Dao
- CSIRO Manufacturing Clayton South Victoria 3169 Australia
| | - Sam Tucker
- Boeing Research and Technology the Boeing Company St Louis
| | | | - Jeffrey Wiggins
- School of Polymer Science and Engineering University of Southern Mississippi Mississippi
| | - Theo Dingemans
- Department of Applied Physical Sciences University of North Carolina North Carolina
| | - Wouter Vogel
- Department of Aerospace Engineering Technical University of Delft Delft the Netherlands
| | - Martino Marchetti
- Department of Aerospace Engineering Technical University of Delft Delft the Netherlands
| | - Zeljka Madzarevic
- Department of Aerospace Engineering Technical University of Delft Delft the Netherlands
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36
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Orman S, Hofstetter C, Aksu A, Reinauer F, Liska R, Baudis S. Toughness enhancers for bone scaffold materials based on biocompatible photopolymers. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.29273] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Sandra Orman
- Institute of Applied Synthetic ChemistryTU WienGetreidemarkt 9/163, A‐1060, ViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Christoph Hofstetter
- Institute of Materials Science and TechnologyTU WienGetreidemarkt 9/308, A‐1060, ViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Adem Aksu
- Karl Leibinger Medizintechnik GmbH & Co. KGKolbinger Str. 10, D‐78570, Mühlheim Germany
| | - Frank Reinauer
- Karl Leibinger Medizintechnik GmbH & Co. KGKolbinger Str. 10, D‐78570, Mühlheim Germany
| | - Robert Liska
- Institute of Applied Synthetic ChemistryTU WienGetreidemarkt 9/163, A‐1060, ViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Stefan Baudis
- Institute of Applied Synthetic ChemistryTU WienGetreidemarkt 9/163, A‐1060, ViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
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37
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Assessments of Secondary Reinforcement of Epoxy Matrix-Glass Fibre Composite Laminates through Nanosilica (SiO₂). MATERIALS 2018; 11:ma11112186. [PMID: 30400592 PMCID: PMC6266382 DOI: 10.3390/ma11112186] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 10/26/2018] [Accepted: 10/31/2018] [Indexed: 11/17/2022]
Abstract
The principal objective of this research work was to investigate the results of impregnating epoxy matrix-glass fibre composite laminates with nanosilica as secondary reinforcement. 0.5, 0.75, 1 and 3 wt% nanosilica was used and thereafter properties of composites were assessed through tensile, three point bending, quasi static indentation tests and dynamic mechanical analysis. Scanning electron microscope examinations were done on fracture surfaces and failure modes were analyzed. The internal failures of the composite due to quasi-static indentation were evaluated through C-Scan. Among samples of different weight fractions, 0.75 wt% nanosilica reinforced composite laminates exhibited substantial increase of 42% in tensile strength and 39.46% in flexural strength. The reduction in glass transition temperature (Tg), increase in storage modulus (E'), loss modulus (E″) and damping factor (tan δ) were also observed. Quasi-static indentation assessments revealed that energy absorption property was enhanced significantly by 53.97%. Hence nanosilica up to 0.75 wt% can be used as a potential candidate for secondary reinforcement in epoxy composite laminates.
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38
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Polyether Sulfone-Based Epoxy Toughening: From Micro- to Nano-Phase Separation via PES End-Chain Modification and Process Engineering. MATERIALS 2018; 11:ma11101960. [PMID: 30322057 PMCID: PMC6213164 DOI: 10.3390/ma11101960] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 09/30/2018] [Accepted: 10/09/2018] [Indexed: 11/16/2022]
Abstract
The toughness of a high-performance thermosetting epoxy network can be greatly improved by generating polyether sulfone-based macro- to nano-scale morphologies. Two polyethersulfones (PES) which only differ by their chain-end nature have been successively investigated as potential tougheners of a high-Tg thermoset matrix based on a mixture of trifunctional and difunctional aromatic epoxies and an aromatic diamine. For a given PES content, morphologies and toughness of the resulting matrices have been tuned by changing curing conditions and put into perspective with PES chain-end nature.
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39
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Li M, Heng Z, Chen Y, Zou H, Liang M. High Toughness Induced by Wormlike-Nanostructure in Epoxy Thermoset Containing Amphiphilic PDMS–PCL Block Copolymers. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02336] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Muxuan Li
- The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Zhengguang Heng
- The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Yang Chen
- The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Huawei Zou
- The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Mei Liang
- The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
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40
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Silva BL, Bello RH, Ferreira Coelho LA. The role of the ratio (PEG:PPG) of a triblock copolymer (PPG-b
-PEG-b
-PPG) in the cure kinetics, miscibility and thermal and mechanical properties in an epoxy matrix. POLYM INT 2018. [DOI: 10.1002/pi.5633] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bruna L Silva
- Center for Technological Sciences; State University of Santa Catarina - UDESC; Joinville Brazil
| | - Roger H Bello
- Center for Technological Sciences; State University of Santa Catarina - UDESC; Joinville Brazil
| | - Luiz A Ferreira Coelho
- Center for Technological Sciences; State University of Santa Catarina - UDESC; Joinville Brazil
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41
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Xiang Y, Li L, Zheng S. Morphologies and dielectric properties of epoxy thermosets containing poly(N-vinylcarbazole), fullerene-C60 and their charge transfer complex nanophases. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.01.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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42
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Huang CF, Chen WH, Aimi J, Huang YS, Venkatesan S, Chiang YW, Huang SH, Kuo SW, Chen T. Synthesis of well-defined PCL-b-PnBA-b-PMMA ABC-type triblock copolymers: toward the construction of nanostructures in epoxy thermosets. Polym Chem 2018. [DOI: 10.1039/c8py01357h] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel PCL-b-PnBA-b-PMMA was designed and applied to construct ordered nanostructures within epoxy thermosets.
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Affiliation(s)
- Chih-Feng Huang
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402-27
- Taiwan
- Research Center for Sustainable Energy and Nanotechnology
| | - Wen-Hua Chen
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402-27
- Taiwan
| | - Junko Aimi
- Molecular Design & Function Group
- Research Center for Functional Materials
- National Institute for Materials Science
- Tsukuba
- Japan
| | - Yi-Shen Huang
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402-27
- Taiwan
| | - Sathesh Venkatesan
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402-27
- Taiwan
| | - Yeo-Wan Chiang
- Department of Materials and Optoelectronic Science
- Center for Nanoscience and Nanotechnology
- National Sun Yat-Sen University
- Kaohsiung 804-24
- Taiwan
| | - Shih-Hung Huang
- Department of Materials and Optoelectronic Science
- Center for Nanoscience and Nanotechnology
- National Sun Yat-Sen University
- Kaohsiung 804-24
- Taiwan
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science
- Center for Nanoscience and Nanotechnology
- National Sun Yat-Sen University
- Kaohsiung 804-24
- Taiwan
| | - Tao Chen
- Key Laboratory of Bio-Based Polymeric Materials Technology and Application of Zhejiang Province
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo 315201
- China
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43
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Xiang Y, Xu S, Zheng S. Epoxy toughening via formation of polyisoprene nanophases with amphiphilic diblock copolymer. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.11.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Puig J, Ceolín M, Williams RJJ, Schroeder WF, Zucchi IA. Controlling the generation of bilayer and multilayer vesicles in block copolymer/epoxy blends by a slow photopolymerization process. SOFT MATTER 2017; 13:7341-7351. [PMID: 28990627 DOI: 10.1039/c7sm01660c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Vesicles are a highly attractive morphology to achieve in micellar dispersions of block copolymers (BCP) in epoxy thermosets due to the fact that small amounts can affect a large volume fraction of the matrix, a fact that is important for toughening purposes. However, generating vesicles in epoxy matrices requires operating in a narrow range of formulations and processing conditions. In this report, we show that block-copolymer vesicles dispersed in an epoxy matrix could be obtained through a sphere-to-cylinder-to-vesicle micellar transition induced by visible-light photopolymerization at room temperature. A 10 wt% colloidal solution of poly(ethylene-co-butene)-block-poly(ethylene oxide) (PEB-b-PEO) block copolymer (BCP) in an epoxy monomer (DGEBA) self-assembled into spherical micelles as shown by small-angle X-ray scattering (SAXS). During a slow photopolymerization of the epoxy monomer carried out at room temperature, a sphere-to-cylinder-to-vesicle transition took place as revealed by in situ SAXS and TEM images. This was driven by the tendency of the system to reduce the local interfacial curvature as a response to a decrease in the miscibility of PEO blocks in the polymerizing epoxy matrix. When the BCP concentration was increased from 10 to 20 and 40 wt%, the final structure evolved from bilayer vesicles to multilayer vesicles and to lamellae, respectively. In particular, for 20 wt% PEB-b-PEO, transient structures such as partially fused multilayered vesicles were observed by TEM, giving insight into the growth mechanism of multilayer vesicles. On the contrary, when a relatively fast thermal polymerization was performed at 80 °C, the final morphology consisted of kinetically trapped spherical and cylindrical micelles. Hopefully, this study will lead to new protocols for the preparation of vesicles dispersed in epoxy matrices in a controlled way.
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Affiliation(s)
- J Puig
- Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), J. B. Justo 4302, B7608FDQ, Mar del Plata, Argentina.
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Vilčáková J, Kutějová L, Jurča M, Moučka R, Vícha R, Sedlačík M, Kovalcik A, Machovský M, Kazantseva N. Enhanced Charpy impact strength of epoxy resin modified with vinyl-terminated polydimethylsiloxane. J Appl Polym Sci 2017. [DOI: 10.1002/app.45720] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jarmila Vilčáková
- Centre of Polymer Systems; University Institute, Tomas Bata University in Zlín, třída Tomáše Bati 5678; Zlín 760 01 Czech Republic
- Polymer Centre, Faculty of Technology; Tomas Bata University in Zlín, Vavrečkova 275, Zlín 760 01; Czech Republic
| | - Lenka Kutějová
- Centre of Polymer Systems; University Institute, Tomas Bata University in Zlín, třída Tomáše Bati 5678; Zlín 760 01 Czech Republic
- Polymer Centre, Faculty of Technology; Tomas Bata University in Zlín, Vavrečkova 275, Zlín 760 01; Czech Republic
| | - Marek Jurča
- Centre of Polymer Systems; University Institute, Tomas Bata University in Zlín, třída Tomáše Bati 5678; Zlín 760 01 Czech Republic
| | - Robert Moučka
- Centre of Polymer Systems; University Institute, Tomas Bata University in Zlín, třída Tomáše Bati 5678; Zlín 760 01 Czech Republic
- Polymer Centre, Faculty of Technology; Tomas Bata University in Zlín, Vavrečkova 275, Zlín 760 01; Czech Republic
| | - Robert Vícha
- Department of Chemistry, Faculty of Technology; Tomas Bata University in Zlín, Vavrečkova 275; Zlín 760 01 Czech Republic
| | - Michal Sedlačík
- Centre of Polymer Systems; University Institute, Tomas Bata University in Zlín, třída Tomáše Bati 5678; Zlín 760 01 Czech Republic
| | - Adriana Kovalcik
- Department of Food Chemistry and Biotechnology, Faculty of Chemistry; Brno University of Technology, Purkynova 118; Brno 612 00 Czech Republic
| | - Michal Machovský
- Centre of Polymer Systems; University Institute, Tomas Bata University in Zlín, třída Tomáše Bati 5678; Zlín 760 01 Czech Republic
| | - Natalia Kazantseva
- Centre of Polymer Systems; University Institute, Tomas Bata University in Zlín, třída Tomáše Bati 5678; Zlín 760 01 Czech Republic
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Beloshenko VA, Beygelzimer YE, Voznyak YV, Savchenko BM, Dmitrenko VY. Reinforcing effect caused by equal channel multiple angular extrusion of polymers manufactured by the FDM process: Experimental investigation and mathematical modeling. J Appl Polym Sci 2017. [DOI: 10.1002/app.45727] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- V. A. Beloshenko
- Donetsk Institute for Physics and Engineering named after A.A. Galkin; National Academy of Sciences of Ukraine; Kyiv 03028 Ukraine
| | - Y. E. Beygelzimer
- Donetsk Institute for Physics and Engineering named after A.A. Galkin; National Academy of Sciences of Ukraine; Kyiv 03028 Ukraine
| | - Yu. V. Voznyak
- Centre of Molecular and Macromolecular Studies; Polish Academy of Sciences; Lodz 90363 Poland
| | - B. M. Savchenko
- Kyiv National University of Technologies and Design; Kyiv 01011 Ukraine
| | - V. Yu. Dmitrenko
- Donetsk Institute for Physics and Engineering named after A.A. Galkin; National Academy of Sciences of Ukraine; Kyiv 03028 Ukraine
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Carrasco-Hernandez S, Gutierrez J, Tercjak A. PE-b-PEO block copolymer nanostructured thermosetting systems as template for TiO 2 nanoparticles. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.06.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Acebo C, Ramis X, Serra A. Improved epoxy thermosets by the use of poly(ethyleneimine) derivatives. PHYSICAL SCIENCES REVIEWS 2017. [DOI: 10.1515/psr-2016-0128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Abstract
Epoxy resins are commonly used as thermosetting materials due to their excellent mechanical properties, high adhesion to many substrates and good heat and chemical resistances. This type of thermosets is intensively used in a wide range of fields, where they act as fiber-reinforced materials, general-purpose adhesives, high-performance coatings and encapsulating materials. These materials are formed by the chemical reaction of multifunctional epoxy monomers forming a polymer network produced through an irreversible way. In this article the improvement of the characteristics of epoxy thermosets using different hyperbranched poly(ethyleneimine) (PEI) derivatives will be explained.
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Misasi JM, Jin Q, Knauer KM, Morgan SE, Wiggins JS. Hybrid POSS-Hyperbranched polymer additives for simultaneous reinforcement and toughness improvements in epoxy networks. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.04.007] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lin J, Bang SH, Malakooti MH, Sodano HA. Isolation of Aramid Nanofibers for High Strength and Toughness Polymer Nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2017; 9:11167-11175. [PMID: 28267314 DOI: 10.1021/acsami.7b01488] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The development of nanoscale reinforcements that can be used to improve the mechanical properties of a polymer remains a challenge due to the long-standing difficulties with exfoliation and dispersion of existing materials. The dissimilar chemical nature of common nanofillers (e.g., carbon nanotubes, graphene) and polymeric matrix materials is the main reason for imperfect filler dispersion and, consequently, low mechanical performance of their composites relative to theoretical predictions. Here, aramid nanofibers that are intrinsically dispersible in many polymers are prepared from commercial aramid fibers (Kevlar) and isolated through a simple, scalable, and low-cost controlled dissolution method. Integration of the aramid nanofibers in an epoxy resin results in nanocomposites with simultaneously improved elastic modulus, strength, and fracture toughness. The improvement of these two mutually exclusive properties of nanocomposites is comparable to the enhancement of widely reported carbon nanotube reinforced nanocomposites but with a cost-effective and more feasible method to achieve uniform and stable dispersion. The results indicate the potential for aramid nanofibers as a new class of reinforcements for polymers.
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Affiliation(s)
- Jiajun Lin
- Department of Macromolecular Science and Engineering, ‡Department of Aerospace Engineering, and §Department of Materials Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Sun Hwi Bang
- Department of Macromolecular Science and Engineering, ‡Department of Aerospace Engineering, and §Department of Materials Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Mohammad H Malakooti
- Department of Macromolecular Science and Engineering, ‡Department of Aerospace Engineering, and §Department of Materials Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Henry A Sodano
- Department of Macromolecular Science and Engineering, ‡Department of Aerospace Engineering, and §Department of Materials Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
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