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He X, Wu H, Chen M, Lv J, Xiao H, Salas MNL, Wu B, Liu P, Zeng K, Yang G. Improve the Crosslinking Reactivity of Nitrile: Design of Nitrile-Functionalized Pyrazine and its Hydrogen Bond-Assisted Nucleophilic Enhancement Study. Macromol Rapid Commun 2023; 44:e2300199. [PMID: 37247428 DOI: 10.1002/marc.202300199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/10/2023] [Indexed: 05/31/2023]
Abstract
In this study, molecular engineering and biomimetic principles are utilized to prepare highly effective nitrile-functionalized pyrazine crosslinking units by exploiting pyrazine's unique nucleophilic strengthening mechanism and proton bonding ability. The curing behaviors of pyrazine-2,3-dicarbonitrile and phthalonitrile are investigated through model curing systems and molecular simulation. The results indicate that pyrazine-2,3-dicarbonitrile exhibits higher reactivity than phthalonitrile, promoted by amine. The cured products of pyrazine-2,3-dicarbonitrile predominantly comprise thermally stable azaisoindoline and azaphthalocyanine. This novel type of highly effective crosslinking unit, and the comprehended mechanism of action of pyrazine at the molecular level, significantly expand the application of pyrazine in materials science.
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Affiliation(s)
- Xian He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Hao Wu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Menghao Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Jiangbo Lv
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Hang Xiao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Maria Nieves López Salas
- Department Sustainable Materials Chemistry, Department of Chemistry, Paderborn University, Warburger Straße 100, D-33098, Paderborn, Germany
| | - Baile Wu
- School of Sustainable Engineering and the Built Environment, Ira A. Fulton Schools of Engineering, Arizona State University, Tempe, AZ, 85287, USA
| | - Pengqing Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Ke Zeng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Gang Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
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2
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Acosta Ortiz R, Sánchez Huerta RS, Ledezma Pérez AS, García Valdez AE. Synthesis of a Curing Agent Derived from Limonene and the Study of Its Performance to Polymerize a Biobased Epoxy Resin Using the Epoxy/Thiol-Ene Photopolymerization Technique. Polymers (Basel) 2022; 14:polym14112192. [PMID: 35683863 PMCID: PMC9182678 DOI: 10.3390/polym14112192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 05/20/2022] [Accepted: 05/21/2022] [Indexed: 11/16/2022] Open
Abstract
This study describes the synthesis of a curing agent derived from limonene as well as its application to prepare biobased thermoset polymers via the epoxy/thiol-ene photopolymerization (ETE) method. A biobased commercial epoxy resin was used to synthesize a crosslinked polymeric matrix of polyether-polythioether type. The preparation of the curing agent required two steps. First, a diamine intermediate was prepared by means of a thiol-ene coupling reaction between limonene and cysteamine hydrochloride. Second, the primary amino groups of the intermediate compound were alkylated using allyl bromide. The obtained ditertiary amine-functionalized limonene compound was purified and characterized by FTIR and NMR spectroscopies along with GC-MS. The curing agent was formulated with a tetrafunctional thiol in stoichiometric ratio, and a photoinitiator at 1 mol % concentration, as the components of a thiol-ene system (TES). Two formulations were prepared in which molar concentrations of 30 and 40 mol % of the TES were added to the epoxy resin. The kinetics of the ETE photopolymerizations were determined by means of Real-Time FTIR spectroscopy, which demonstrated high reactivity by observing photopolymerization rates in the range of 1.50–2.25 s−1 for the epoxy, double bonds and thiol groups. The obtained polymers were analyzed by thermal and thermo-mechanical techniques finding glass transition temperatures (Tg) of 60 °C and 52 °C for the polymers derived from the formulations with 30 mol % and 40 mol % of TES, respectively. Potential applications for these materials can be foreseen in the area of coatings.
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3
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Manarin E, Corsini F, Trano S, Fagiolari L, Amici J, Francia C, Bodoardo S, Turri S, Bella F, Griffini G. Cardanol-Derived Epoxy Resins as Biobased Gel Polymer Electrolytes for Potassium-Ion Conduction. ACS APPLIED POLYMER MATERIALS 2022; 4:3855-3865. [PMID: 35601462 PMCID: PMC9112699 DOI: 10.1021/acsapm.2c00335] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 04/20/2022] [Indexed: 05/04/2023]
Abstract
In this study, biobased gel polymer electrolyte (GPE) membranes were developed via the esterification reaction of a cardanol-based epoxy resin with glutaric anhydride, succinic anhydride, and hexahydro-4-methylphthalic anhydride. Nonisothermal differential scanning calorimetry was used to assess the optimal curing time and temperature of the formulations, evidencing a process activation energy of ∼65-70 kJ mol-1. A rubbery plateau modulus of 0.65-0.78 MPa and a crosslinking density of 2 × 10-4 mol cm-3 were found through dynamic mechanical analysis. Based on these characteristics, such biobased membranes were tested for applicability as GPEs for potassium-ion batteries (KIBs), showing an excellent electrochemical stability toward potassium metal in the -0.2-5 V voltage range and suitable ionic conductivity (10-3 S cm-1) at room temperature. This study demonstrates the practical viability of these biobased materials as efficient GPEs for the fabrication of KIBs, paving the path to increased sustainability in the field of next-generation battery technologies.
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Affiliation(s)
- Eleonora Manarin
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Francesca Corsini
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Sabrina Trano
- Department
of Applied Science and Technology, Politecnico
di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Lucia Fagiolari
- Department
of Applied Science and Technology, Politecnico
di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Julia Amici
- Department
of Applied Science and Technology, Politecnico
di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Carlotta Francia
- Department
of Applied Science and Technology, Politecnico
di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Silvia Bodoardo
- Department
of Applied Science and Technology, Politecnico
di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Stefano Turri
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Federico Bella
- Department
of Applied Science and Technology, Politecnico
di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Gianmarco Griffini
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
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4
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Makwana K, Ichake AB, Valodkar V, Padmanaban G, Badiger MV, Wadgaonkar PP. Cardol: Cashew Nut Shell Liquid (CNSL) - Derived Starting Material for the Preparation of Partially Bio-Based Epoxy Resins. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Hsissou R, Benhiba F, Echihi S, Benzidia B, Cherrouf S, Haldhar R, Ahmad Alvi P, Kaya S, Serdaroğlu G, Zarrouk A. Performance of curing epoxy resin as potential anticorrosive coating for carbon steel in 3.5% NaCl medium: Combining experimental and computational approaches. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.139081] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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6
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Gonçalves F, Ferreira P, Alves P. Synthesis and characterization of itaconic-based epoxy resin: Chemical and thermal properties of partially biobased epoxy resins. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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7
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Synthesis of tetraallylated cystamine and the study of its performance as a curing agent for the epoxy/thiol-ene photopolymerization of biobased nopol epoxy resins. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02725-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Wang M, Wang G, Xu Y, Song X, Bu Q. Simultaneous improvement of the plasticization, mechanical and migration resistance properties of PVC materials by grafting ricinoleic acid-derived phosphate ester. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01860-z] [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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9
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Zhang Y, Jia S, Pan H, Wang L, Zhang H, Yang H, Dong L. Preparation, characterization and properties of biodegradable poly(butylene adipate‐co‐butylene terephthalate)/thermoplastic poly(propylene carbonate) polyurethane blend films. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ye Zhang
- School of Chemical Engineering Changchun University of Technology Changchun China
| | - Shiling Jia
- School of Chemical Engineering Changchun University of Technology Changchun China
| | - Hongwei Pan
- Changchun Institute of Applied Chemistry, Key Laboratory of Polymer Ecomaterials Chinese Academy of Science Changchun China
| | - Lijuan Wang
- School of Chemical Engineering Changchun University of Technology Changchun China
| | - Huiliang Zhang
- Changchun Institute of Applied Chemistry, Key Laboratory of Polymer Ecomaterials Chinese Academy of Science Changchun China
- Zhejiang Zhongke Applied Chemistry Technology Co., Ltd. Hangzhou China
| | - Huili Yang
- Changchun Institute of Applied Chemistry, Key Laboratory of Polymer Ecomaterials Chinese Academy of Science Changchun China
| | - Lisong Dong
- Changchun Institute of Applied Chemistry, Key Laboratory of Polymer Ecomaterials Chinese Academy of Science Changchun China
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10
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Chakraborty I, Chatterjee K. Polymers and Composites Derived from Castor Oil as Sustainable Materials and Degradable Biomaterials: Current Status and Emerging Trends. Biomacromolecules 2020; 21:4639-4662. [PMID: 33222440 DOI: 10.1021/acs.biomac.0c01291] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Recent years have seen rapid growth in utilizing vegetable oils to derive a wide variety of polymers to replace petroleum-based polymers for minimizing environmental impact. Nonedible castor oil (CO) can be extracted from castor plants that grow easily, even in an arid land. CO is a promising source for developing several polymers such as polyurethanes, polyesters, polyamides, and epoxy-polymers. Several synthesis routes have been developed, and distinct properties of polymers have been studied for industrial applications. Furthermore, fillers and fibers, including nanomaterials, have been incorporated in these polymers for enhancing their physical, thermal, and mechanical properties. This review highlights the development of CO-based polymers and their composites with attractive properties for industrial and biomedical applications. Recent advancements in CO-based polymers and their composites are presented along with a discussion on future opportunities for further developments in diverse applications.
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Affiliation(s)
- Indranil Chakraborty
- Department of Materials Engineering, Indian Institute of Science, Bengaluru, Karnataka, India 560012
| | - Kaushik Chatterjee
- Department of Materials Engineering, Indian Institute of Science, Bengaluru, Karnataka, India 560012
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11
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Yang X, Guo M, Wang X, Huan W, Li M. Biobased Epoxies Derived from Myrcene and Plant Oil: Design and Properties of Their Cured Products. ACS OMEGA 2020; 5:28918-28928. [PMID: 33225122 PMCID: PMC7675544 DOI: 10.1021/acsomega.0c02166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
Two biobased epoxy resin monomers derived from myrcene and plant oil are synthesized without using petroleum-based bisphenol A. To obtain material with balanced strength and toughness, the two epoxy monomers are cured together in different weight proportions. Properties of cured epoxy resin are tested by different techniques. Tensile and impact tests indicate that when the content of myrcene-based epoxy is 50-75 wt %, the cured sample has a high strain of 32.30-161.47%, and a moderate tensile strength of 9.57-15.96 MPa. Dynamic mechanical analysis suggests that the glass transition temperature (T g) of cured samples increases from 17 to 71 °C with the increasing content of myrcene-based epoxy. Morphology of fracture surface indicates that the cured sample containing plant oil-based epoxy resin shows obvious plastic deformation. The curing kinetics of the two epoxies resin is studied by differential scanning calorimetry. Also, the calculated activation energy is 70.49 kJ/mol for myrcene-based epoxy and 64.02 kJ/mol for poly-fatty acid-derived epoxy resin. The thermogravimetric analysis indicates that the main degradation temperature of all cured samples is above 300 °C. The sustainable biobased epoxy has some potential in preparing flexible epoxy materials and can be used to toughen conventional petroleum-based epoxy.
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12
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Yu S, Li X, Zou M, Guo X, Ma H, Wang S. Effect of the Aromatic Amine Curing Agent Structure on Properties of Epoxy Resin-Based Syntactic Foams. ACS OMEGA 2020; 5:23268-23275. [PMID: 32954177 PMCID: PMC7495733 DOI: 10.1021/acsomega.0c03085] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 08/17/2020] [Indexed: 06/11/2023]
Abstract
Epoxy resin is one of the commonly used matrixes of syntactic foams as a buoyancy material, the curing agents of which affect some of the properties for syntactic foams. Therefore, the curing reactions of N,N,N',N'-tetraepoxypropyl-4,4'-diaminodiphenylmethane (AG-80) epoxy resin between 4,4-diaminodiphenyl methane (DDM) and the mixture of m-xylylenediamine and DDM (DDM-m-XDA) systems are studied. The DDM mixed with m-XDA enhances curing reactions with the AG-80 epoxy resin, and the mechanisms of the two curing systems are different through nonisothermal kinetics. Compared with a single curing system, there are some wrinkles on the surface of the AG-80/DDM-m-XDA matrix because of the disordered network. Composited with hollow glass microspheres (HGMs), the more flexible m-XDA structure enhances the interfacial adhesion between the matrix and HGM for syntactic foams. However, the wrinkles in the matrix increase the broken degree of HGMs; especially at HGM contents higher than 55%, the flaw increases the density and water absorption of syntactic foams; meanwhile, it decreases the compressive strength. Therefore, the properties of syntactic foams can be improved by mixing different molecular structure curing agents and the mixture liquid curing agent simplifies the preparation process to some extent.
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13
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Adhesive properties of poly (methyl silsesquioxanes)/bio-based epoxy nanocomposites. IRANIAN POLYMER JOURNAL 2020. [DOI: 10.1007/s13726-020-00849-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Tactical tuning of mechanical and thermo-mechanical properties of glass fiber/epoxy multi-scale composites by incorporating N-(2-aminoethyl)-3-aminopropyl trimethoxysilane functionalized carbon nanotubes. IRANIAN POLYMER JOURNAL 2020. [DOI: 10.1007/s13726-020-00848-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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15
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Aziz T, Fan H, Zhang X, Khan FU, Fahad S, Ullah A. Adhesive properties of bio-based epoxy resin reinforced by cellulose nanocrystal additives. JOURNAL OF POLYMER ENGINEERING 2020. [DOI: 10.1515/polyeng-2019-0255] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
AbstractThe adhesive properties of a self-prepared bio-based epoxy resin with native cellulose nanocrystals (CNCs) are evaluated in this article. The porosity of actual CNCs is high. The most promising finding is the acquisition of high tensile modulus. The addition of CNC composites significantly increased the tensile modulus at lower wt.%, and the maximum crystallinity of CNCs was obtained. Bearing in mind the advantages of CNCs, scanning electron microscopy (SEM) showed a uniform distribution of concentrated CNCs. Clusters were formed at higher CNCs ratios, and the composite matrix content with high CNCs produced good expansion, low crystallinity, and increased elongation. Our analysis showed that the original CNCs were more evenly distributed in the self-prepared bio-based epoxy resin, which enhanced transformation, supported by improved dispersion of native CNCs. The presence of native CNCs greatly improved and enhanced the bonding performance of the bio-based epoxy resin in the interface area. Enhancing the mechanical properties of native CNCs has broad application prospects in environmental areas. This suggests that the widespread use of native CNCs in environmental engineering applications is feasible, especially in terms of adhesives properties.
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Affiliation(s)
- Tariq Aziz
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hong Fan
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xiangwei Zhang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Farman Ullah Khan
- Department of Chemistry, University of Science and Technology, Bannu 28000, Pakistan
- Department of Chemistry, University of Lakki Marwat, Lakki Marwat 28420, KPK, Pakistan
| | - Shah Fahad
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Asmat Ullah
- School of Pharmacy, Xi’an Jiaotong University Shannxi, Shannxi, China
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16
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Vanillin-derived epoxy monomer for synthesis of bio-based epoxy thermosets: effect of functionality on thermal, mechanical, chemical and structural properties. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01164-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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17
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Shaw L, Hutchings LR. Tales of the unexpected. The non-random statistical copolymerisation of myrcene and styrene in the presence of a polar modifier. Polym Chem 2020. [DOI: 10.1039/d0py01099e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Terpene monomers such as myrcene are considered sustainable replacements for oil-based dienes in the production of sSBR. We present unexpected data for the anionic copolymerisation of myrcene and styrene in the presence of TMEDA, a polar modifier.
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Affiliation(s)
- Lloyd Shaw
- Department of Chemistry and Centre for Doctoral Training in Soft Matter and Functional Interfaces (SOFI CDT)
- Durham University
- Durham
- UK
| | - Lian R. Hutchings
- Department of Chemistry and Centre for Doctoral Training in Soft Matter and Functional Interfaces (SOFI CDT)
- Durham University
- Durham
- UK
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18
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Rajalakshmi P, Marie JM, Maria Xavier AJ. Castor oil-derived monomer ricinoleic acid based biodegradable unsaturated polyesters. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.109016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Cao S, Li S, Li M, Xu L, Ding H, Xia J, Zhang M, Huang K. The thermal self-healing properties of phenolic polyurethane derived from polyphenols with different substituent groups. J Appl Polym Sci 2018. [DOI: 10.1002/app.47039] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Shan Cao
- Institute of Chemical Industry of Forestry Products; CAF; Institute of Forest New Technology, CAF; National Engineering Lab for Biomass Chemical Utilization; Key Lab on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material; Jiangsu 210042 Nanjing China
| | - Shouhai Li
- Institute of Chemical Industry of Forestry Products; CAF; Institute of Forest New Technology, CAF; National Engineering Lab for Biomass Chemical Utilization; Key Lab on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material; Jiangsu 210042 Nanjing China
| | - Mei Li
- Institute of Chemical Industry of Forestry Products; CAF; Institute of Forest New Technology, CAF; National Engineering Lab for Biomass Chemical Utilization; Key Lab on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material; Jiangsu 210042 Nanjing China
| | - Lina Xu
- Institute of Chemical Industry of Forestry Products; CAF; Institute of Forest New Technology, CAF; National Engineering Lab for Biomass Chemical Utilization; Key Lab on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material; Jiangsu 210042 Nanjing China
| | - Haiyang Ding
- Institute of Chemical Industry of Forestry Products; CAF; Institute of Forest New Technology, CAF; National Engineering Lab for Biomass Chemical Utilization; Key Lab on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material; Jiangsu 210042 Nanjing China
| | - Jianling Xia
- Institute of Chemical Industry of Forestry Products; CAF; Institute of Forest New Technology, CAF; National Engineering Lab for Biomass Chemical Utilization; Key Lab on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material; Jiangsu 210042 Nanjing China
| | - Meng Zhang
- Institute of Chemical Industry of Forestry Products; CAF; Institute of Forest New Technology, CAF; National Engineering Lab for Biomass Chemical Utilization; Key Lab on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material; Jiangsu 210042 Nanjing China
| | - Kun Huang
- Institute of Chemical Industry of Forestry Products; CAF; Institute of Forest New Technology, CAF; National Engineering Lab for Biomass Chemical Utilization; Key Lab on Forest Chemical Engineering, SFA; Key Lab of Biomass Energy and Material; Jiangsu 210042 Nanjing China
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20
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Chen B, Li J, Liu T, Dai Z, Zhao H. Facile preparation of epoxy based elastomers with tunable T gs and mechanical properties. RSC Adv 2018; 8:13474-13481. [PMID: 35542537 PMCID: PMC9079816 DOI: 10.1039/c8ra00894a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 04/03/2018] [Indexed: 11/21/2022] Open
Abstract
In this work, a secondary amine-capped polyaspartic ester (PAE-D230) was synthesized using diethyl maleate and amine-terminated polyether (D230) via Michael addition reaction. By modulating the molar ratio of preliminary amine containing D230 and secondary amine-capped PAE-D230 during the curing process with epoxy precursor E44, we obtained epoxy shape memory polymers with tunable T gs(-12-20 °C), controllable mechanical properties with tensile stress from 0.8 to 14.1 MPa, tensile modulus from 0.7 to 872.0 MPa, and elongation at break from 45.2 to 195.1%. The influence of the composition of curing components on the thermal properties, thermomechanical, mechanical properties, shape memory effect were systematically studied by DSC, TGA, DMA, tensile-stress measurements.
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Affiliation(s)
- Bin Chen
- School of Materials Science and Engineering, Shenyang University of Chemical Technology 11 St. Economic & Technological Development Zone Shenyang 110142 P. R. China
| | - Jingyu Li
- School of Materials Science and Engineering, Shenyang University of Chemical Technology 11 St. Economic & Technological Development Zone Shenyang 110142 P. R. China .,Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo 315201 P. R. China
| | - Tong Liu
- School of Materials Science and Engineering, Shenyang University of Chemical Technology 11 St. Economic & Technological Development Zone Shenyang 110142 P. R. China .,Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo 315201 P. R. China
| | - Zhendong Dai
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo 315201 P. R. China
| | - Haichao Zhao
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo 315201 P. R. China
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21
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Wu F, Zhou X, Yu X. Reaction mechanism, cure behavior and properties of a multifunctional epoxy resin, TGDDM, with latent curing agent dicyandiamide. RSC Adv 2018; 8:8248-8258. [PMID: 35542009 PMCID: PMC9078540 DOI: 10.1039/c7ra13233f] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 02/02/2018] [Indexed: 11/21/2022] Open
Abstract
The curing mechanism of the TGDDM/DICY system consisted of two main reactions and it experienced two autocatalytic curing processes.
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Affiliation(s)
- Feng Wu
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
| | - Xingping Zhou
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
| | - Xinhai Yu
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
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