1
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Jiang Y, Wang S, Zhang Y. Improving performance of natural rubber composites through the novel silica modified by a crosslinking agent. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04662-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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2
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Wang J, Xing S, Xie J, Zhao S, Gan Y, Yang L, Wang TJ. Amination of silica nanoparticles using aminobutanol to increase surface reactivity. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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3
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Lin M, Yang X, Yang L, Fu L, Teng X, Lin B, Xu C. Effects of carboxymethyl chitosan-assisted dispersion of silica on interface and mechanical properties of rubber composites. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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4
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Inphonlek S, Bureewong N, Jarukumjorn K, Chumsamrong P, Ruksakulpiwat C, Ruksakulpiwat Y. Preparation of Poly(Acrylic Acid-co-acrylamide)-Grafted Deproteinized Natural Rubber and Its Effect on the Properties of Natural Rubber/Silica Composites. Polymers (Basel) 2022; 14:polym14214602. [PMID: 36365597 PMCID: PMC9657069 DOI: 10.3390/polym14214602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 10/24/2022] [Accepted: 10/28/2022] [Indexed: 12/01/2022] Open
Abstract
This work aims to enhance the polarity of natural rubber by grafting copolymers onto deproteinized natural rubber (DPNR) to improve its compatibility with silica. Poly(acrylic acid-co-acrylamide)-grafted DPNR ((PAA-co-PAM)-DPNR) was successfully prepared by graft copolymerization with acrylic acid and acrylamide in the latex stage, as confirmed by FTIR. The optimum conditions to obtain the highest conversion, grafting efficiency, and grafting percentage were a reaction time of 360 min, a reaction temperature of 50 °C, and an initiator concentration of 1.0 phr. The monomer conversion, grafting efficiency, and grafting percentage were 91.9–94.1, 20.8–38.9, and 2.1–9.9%, respectively, depending on the monomer content. It was shown that the polarity of the natural rubber increased after grafting. The (PAA-co-PAM)-DPNR was then mixed with silica to prepare DPNR/silica composites. The presence of the (PAA-co-PAM)-DPNR and silica in the composites was found to improve the mechanical properties of the DPNR. The incorporation of 10 phr of silica into the (PAA-co-PAM)-DPNR with 10 phr monomer increased its tensile strength by 1.55 times when compared to 10 phr of silica loaded into the DPNR. The silica-filled (PAA-co-PAM)-DPNR provided s higher storage modulus, higher Tg, and a lower tan δ peak, indicating stronger modified DPNR/silica interactions and greater thermal stability when compared to silica-filled DPNR.
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Affiliation(s)
- Supharat Inphonlek
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Namthip Bureewong
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Kasama Jarukumjorn
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Pranee Chumsamrong
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Chaiwat Ruksakulpiwat
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Correspondence: (C.R.); (Y.R.)
| | - Yupaporn Ruksakulpiwat
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Correspondence: (C.R.); (Y.R.)
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5
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Wang D, Tang Z, Huang R, Li H, Zhang C, Guo B. Inverse Vulcanization of Vinyltriethoxysilane: A Novel Interfacial Coupling Agent for Silica-Filled Rubber Composites. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dong Wang
- Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou510640, P. R. China
| | - Zhenghai Tang
- Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou510640, P. R. China
| | - Ruoyan Huang
- Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou510640, P. R. China
| | - Haoming Li
- Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou510640, P. R. China
| | - Chengfeng Zhang
- Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou510640, P. R. China
| | - Baochun Guo
- Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou510640, P. R. China
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6
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Bijina V, Jandas PJ, Joseph S, Gopu J, Abhitha K, John H. Recent trends in industrial and academic developments of green tyre technology. Polym Bull (Berl) 2022; 80:1-30. [PMID: 36119950 PMCID: PMC9465654 DOI: 10.1007/s00289-022-04445-2] [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: 05/18/2022] [Revised: 05/18/2022] [Accepted: 08/16/2022] [Indexed: 11/04/2022]
Abstract
Growing natural calamities as a consequence of global warming are one of the most pondering subjects today. The exponential growth of environmental pollution due to unscientific human exploitation of natural resources is considered the prime reason for the harsh responses of nature. Researchers from various fields of industry and academia are working hard to develop and implement products/technologies that are environmentally friendly or less harmful to the ecosystem. Material researchers, specifically those working in the automobile sector are also not behind in search of green products from eco-friendly raw materials and production methods. The automobile industry is collectively responsible for around 40% of global pollution in terms of greenhouse gas emissions. Out of which around 20-30% is originating from tyre production and its end-use. In this view, tyre production from eco-friendly raw materials and technologies that have minimum hazardousness to the environment is a hot research topic today. A few products in the market with "green" tags and many are in the pipeline for the recent future. This review summarises a detailed discussion of the emerging green technologies for tyre production and depicted comprehensive data from the available literature. The paper has been drafted from a well-balanced academic and industrial point of view since the researchers from both sectors are working in harmony for a better future for green tyre technology.
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Affiliation(s)
- V. Bijina
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, 682022 India
| | - P. J. Jandas
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, 682022 India
| | - Sherin Joseph
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, 682022 India
| | - J. Gopu
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, 682022 India
| | - K. Abhitha
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, 682022 India
- Inter University Centre for Nanomaterials and Devices (IUCND), Cochin University of Science and Technology, Kerala, 682022 India
| | - Honey John
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, 682022 India
- Inter University Centre for Nanomaterials and Devices (IUCND), Cochin University of Science and Technology, Kerala, 682022 India
- Centre for Excellence in Advanced Materials, Cochin University of Science and Technology, Cochin, 682022 India
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7
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Li X, Liu J, Zheng Z. Recent progress of elastomer–silica nanocomposites toward green tires:simulation and experiment. POLYM INT 2022. [DOI: 10.1002/pi.6454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiu Li
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials Hubei University Wuhan 430062 China
| | - Jun Liu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials Beijing University of Chemical Technology Beijing 100029 China
| | - Zi‐Jian Zheng
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials Hubei University Wuhan 430062 China
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8
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Chen Q, Huang W, Duan P, Yue T, Zhang L, Wu X, Liu J. Manipulating the mechanical properties of cis-polyisoprene nanocomposites via molecular dynamics simulation. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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9
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Performance Enhancement of Polymerized, Functionalized Solution Styrene–Butadiene Rubber Composites Using Oligomeric Resin towards Extremely Safe and Energy-Saving Tires. Polymers (Basel) 2022; 14:polym14142928. [PMID: 35890704 PMCID: PMC9316608 DOI: 10.3390/polym14142928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/20/2022] [Accepted: 06/26/2022] [Indexed: 02/04/2023] Open
Abstract
Polymerized, functionalized solution styrene–butadiene rubber (F-SSBR) is a new type of polymerized styrene–butadiene rubber solution containing specific terminal groups, which can be used in treads for high performances. However, the wet skid resistance related to safety, the rolling resistance to energy consumption, and the wear resistance to service life are often contradictory and form the performance “magic triangle”. In this work, oligomeric resins, including Coumarone resin, C9 resin, C5/C9 resin and a styrene-α-methyl styrene copolymer (SSC), were used as tire functional additives and selected to replace treated distillate aromatic extract (TDAE) to improve the performances of silica-filled F-SSBR composites. The C9 resin, C5/C9 resin and SSC could enhance the modulus at 300% and tensile strength of the F-SSBR composite. The four resins could improve the wet skid resistance and wear resistance of the composites. However, Coumarone resin caused poor silica dispersion in the F-SSBR matrix and eventually, the lower modulus, higher loss factor at 60 °C and the higher heat buildup in the composite were comparative to the composite with TDAE. Furthermore, the synergistic effect of the C5/C9 resin and SSC was found to improve the mechanical performance of the composites and it resulted in higher tensile strength and modulus, and a lower heat buildup, compared to the case when only TDAE was used. It is noted that the properties “magic triangle” was broken by the C5/C9 resin and SSC, and the C5/C910T15 increased the wet skid resistance by 21.7%, fuel-saving rate by 2.3%, and wear resistance by 8.3%, while S20T5 increased the wet skid resistance by 30.4%, fuel-saving rate by 7%, and wear resistance by 25% compared with CG.
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10
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Establishment of nucleation and growth model of silica nanostructured particles and comparison with experimental data. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.06.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Qiu J, Zhang K, Yan L. Mercaptopropyl-doped ultra-small silica modified GO nanosheets to enhance mechanical properties of nitrile butadiene rubber. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Chang Z, Wang Y, Zhang Z, Gao K, Hou G, Shen J, Zhang L, Liu J. Creep behavior of polymer nanocomposites: Insights from molecular dynamics simulation. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123895] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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13
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Kurka DW, Niehues M, Kudruk S, Gerke V, Ravoo BJ. Polythiolactone-Decorated Silica Particles: A Versatile Approach for Surface Functionalization, Catalysis and Encapsulation. Chemistry 2021; 27:7667-7676. [PMID: 33788322 PMCID: PMC8252643 DOI: 10.1002/chem.202100547] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Indexed: 12/29/2022]
Abstract
The surface chemistry of colloidal silica has tremendous effects on its properties and applications. Commonly the design of silica particles is based on their de novo synthesis followed by surface functionalization leading to tailormade properties for a specific purpose. Here, the design of robust "precursor" polymer-decorated silica nano- and microparticles is demonstrated, which allows for easy post-modification by polymer embedded thiolactone chemistry. To obtain this organic-inorganic hybrid material, silica particles (SiO2 P) were functionalized via surface-initiated atom transfer radical polymerization (SI-ATRP) with poly(2-hydroxyethyl acrylate) (PHEA)-poly(thiolactone acrylamide (PThlAm) co-polymer brushes. Exploiting the versatility of thiolactone post-modification, a system was developed that could be used in three exemplary applications: 1) the straightforward molecular post-functionalization to tune the surface polarity, and therefore the dispersibility in various solvents; 2) the immobilization of metal nanoparticles into the polymer brushes via the in situ formation of free thiols that preserved catalytic activity in a model reaction; 3) the formation of redox-responsive, permeable polymer capsules by crosslinking the thiolactone moieties with cystamine dihydrochloride (CDH) followed by dissolution of the silica core.
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Affiliation(s)
- Dustin Werner Kurka
- Organic Chemistry Institute/Center for Soft NanoscienceWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149Münster
- Busso-Peus-Straße 1048149MünsterGermany
| | - Maximilian Niehues
- Organic Chemistry Institute/Center for Soft NanoscienceWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149Münster
- Busso-Peus-Straße 1048149MünsterGermany
| | - Sergej Kudruk
- Institute of Medical Biochemistry, Center for Molecular Biology of InflammationWestfälische Wilhelms-Universität MünsterVon-Esmarch-Straße 5648149 MünsterGermany
| | - Volker Gerke
- Institute of Medical Biochemistry, Center for Molecular Biology of InflammationWestfälische Wilhelms-Universität MünsterVon-Esmarch-Straße 5648149 MünsterGermany
| | - Bart Jan Ravoo
- Organic Chemistry Institute/Center for Soft NanoscienceWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149Münster
- Busso-Peus-Straße 1048149MünsterGermany
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14
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Wei X, Peng P, Peng F, Dong J. Natural Polymer Eucommia Ulmoides Rubber: A Novel Material. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:3797-3821. [PMID: 33761246 DOI: 10.1021/acs.jafc.0c07560] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
As the second natural rubber resource, Eucommia ulmoides rubber (EUR) from Eucommia ulmoides Oliver is mainly composed of trans-1,4-polyisoprene, which is the isomer of natural rubber cis-1,4-polyisoprene from Hevea brasiliensis. In the past few years, the great potential application of EUR has received increasing attention, and there is a growing awareness that the natural polymer EUR could become an emerging research topic in field of the novel materials due to its unique and excellent duality of both rubber and plastic. To gain insight into its further development, in this review, the extraction, structure, physicochemical properties, and modification of EUR are discussed in detail. More emphasis on the potential applications in the fields of the environment, agriculture, engineering, and biomedical engineering is summarized. Finally, some insights into the challenges and perspectives of EUR are also suggested.
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Affiliation(s)
- Xingneng Wei
- College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Pai Peng
- College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Feng Peng
- College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Juane Dong
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
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15
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Persano F, Batasheva S, Fakhrullina G, Gigli G, Leporatti S, Fakhrullin R. Recent advances in the design of inorganic and nano-clay particles for the treatment of brain disorders. J Mater Chem B 2021; 9:2756-2784. [PMID: 33596293 DOI: 10.1039/d0tb02957b] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Inorganic materials, in particular nanoclays and silica nanoparticles, have attracted enormous attention due to their versatile and tuneable properties, making them ideal candidates for a wide range of biomedical applications, such as drug delivery. This review aims at overviewing recent developments of inorganic nanoparticles (like porous or mesoporous silica particles) and different nano-clay materials (like montmorillonite, laponites or halloysite nanotubes) employed for overcoming the blood brain barrier (BBB) in the treatment and therapy of major brain diseases such as Alzheimer's, Parkinson's, glioma or amyotrophic lateral sclerosis. Recent strategies of crossing the BBB through invasive and not invasive administration routes by using different types of nanoparticles compared to nano-clays and inorganic particles are overviewed.
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Affiliation(s)
- Francesca Persano
- University of Salento, Department of Mathematics and Physics, Via Per Arnesano 73100, Lecce, Italy
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16
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Sun Y, Cheng Z, Zhang L, Jiang H, Li C. Promoting the dispersibility of silica and interfacial strength of rubber/silica composites prepared by latex compounding. J Appl Polym Sci 2020. [DOI: 10.1002/app.49526] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ying Sun
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and EngineeringEast China University of Science & Technology Shanghai China
| | - Zhimin Cheng
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and EngineeringEast China University of Science & Technology Shanghai China
| | - Ling Zhang
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and EngineeringEast China University of Science & Technology Shanghai China
| | - Haibo Jiang
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and EngineeringEast China University of Science & Technology Shanghai China
| | - Chunzhong Li
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and EngineeringEast China University of Science & Technology Shanghai China
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17
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Itaconate Based Elastomer as a Green Alternative to Styrene–Butadiene Rubber for Engineering Applications: Performance Comparison. Processes (Basel) 2020. [DOI: 10.3390/pr8121527] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In response to increasingly stringent requirements for the sustainability and environmental friendliness of the rubber industry, the application and development of bio-based elastomers have received extensive attention. In this work, we prepared a new type of bio-based elastomer poly(dibutyl itaconate-butadiene) copolymer (PDBIB) nanocomposite using carbon black and non-petroleum-based silica with a coupling agent. Using dynamic thermodynamic analysis (DMTA) and scanning electron microscope (SEM), we studied the effects of feed ratio on dynamic mechanical properties, micro morphology, and filler dispersion of PDBIB composites. Among them, silica-reinforced PDBIB60 (weight ratio of dibutyl itaconate to butadiene 40/60) and carbon black-reinforced PDBIB70 (weight ratio of dibutyl itaconate to butadiene 30/70) both showed excellent performance, such as tensile strength higher than 18 MPa and an elongation break higher than 400%. Compared with the widely used ESBR, the results showed that PDBIB had better rolling resistance and heat generation than ESBR. In addition, considering the development of green tires, we compared it with the solution polymerized styrene–butadiene rubber with better comprehensive performance, and analyzed the advantages of PDBIB and the areas to be improved. In summary, PDBIB prepared from bio-based monomers had superior performance and is of great significance for achieving sustainable development, providing a direction for the development of high-performance green tire and holding great potential to replace petroleum-derived elastomers.
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18
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Qin X, Xu H, Zhang G, Wang J, Wang Z, Zhao Y, Wang Z, Tan T, Bockstaller MR, Zhang L, Matyjaszewski K. Enhancing the Performance of Rubber with Nano ZnO as Activators. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48007-48015. [PMID: 33040537 DOI: 10.1021/acsami.0c15114] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The vulcanization of rubber is a chemical process to improve the mechanical properties by cross-linking unsaturated polymer chains. Zinc oxide (ZnO) acts as an activator, boosting the rubbers' sulfur vulcanization. Maintaining the level of ZnO content in the rubber compounds as low as possible is desirable, not only for economic reasons but also to reduce the environmental footprint of the process. In this contribution, octylamine (OA) capped ZnO nanoparticles (5 nm diameter), prepared through a thermal decomposition method, were demonstrated to be efficient activators for the sulfur vulcanization of natural rubber, enabling the reduction of the required amount of ZnO as compared to commercial systems. The effect of different ZnO activators (OA capped ZnO/commercial indirect process ZnO) on the curing characteristics, cross-linking densities, and mechanical performance, as well as the thermal behavior of rubber compounds, were investigated. Compared to the commercial indirect process ZnO, OA capped ZnO nanoparticles not only effectively enhanced the curing efficiency of natural rubber but also improved the mechanical performance of the composites after vulcanization. This was interpreted as, by applying the OA capped ZnO nanoparticles, the ZnO levels in rubber compounding were significantly reduced under the industrial vulcanization condition (151 °C, 30 min).
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Affiliation(s)
- Xuan Qin
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Haoshu Xu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ganggang Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jiadong Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhao Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yuqi Zhao
- Department of Materials Science & Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Zongyu Wang
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Tianwei Tan
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Michael R Bockstaller
- Department of Materials Science & Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Liqun Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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Sattar M, Patnaik A. Role of Interface Structure and Chain Dynamics on the Diverging Glass Transition Behavior of SSBR-SiO 2-PIL Elastomers. ACS OMEGA 2020; 5:21191-21202. [PMID: 32875255 PMCID: PMC7450647 DOI: 10.1021/acsomega.0c02929] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 07/28/2020] [Indexed: 05/03/2023]
Abstract
Intermolecular interactions between the constituents of a polymer nanocomposite at the polymer-particle interface strongly affect the segmental mobility of polymer chains, correlated with their glass transition behavior, and are responsible for the improved dynamical viscoelastic properties. In this work, we emphasized on the evolution of characteristic interfaces and their dynamics in silica (SiO2 NP)-reinforced, solution-polymerized, styrene butadiene rubber (SSBR) composites, whose relative prevalence varied with the phosphonium ionic liquid (PIL) volume fraction, used as an interfacial modifier. The molecular origins of such interfaces were examined through systematic dielectric spectroscopy, molecular dynamics (MD) simulations, and dynamic-mechanical analyses. The PIL facilitated H-bonding, cation-π, surface-phenyl, and van der Waals interfacial interactions between SSBR and SiO2 NP, thereby regulating the polymer chain dynamics, orientation, and mean-square displacement. Specifically, the mass density profiles from MD simulations revealed the dynamic gradient of polymer chains in the interfacial region as a function of radial distance from the center of mass of the SiO2 NP surface. The results showed a structuring effect to result in well-resolved density peaks at specific radial distances with the tangential orientation of styrene monomers in the vicinity of the SiO2 NP surface. These domino effects highlighted strong interfacial interactions to have an indispensable effect on the viscoelastic performance and thermal motion of SSBR molecular chains, leading to a higher glass transition temperature (T g) by ∼15 K, validating the experimental data. More importantly, our results gave new insights into the fundamental understanding of the fact that the strength of intermolecular interactions induced by PIL at the polymer-particle interface is the key to control the α-relaxation dynamics and T g optimization, desired for specific applications.
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Affiliation(s)
- Mohammad
Abdul Sattar
- Colloid
and Interface Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Madras, Chennai600036, India
- R&D
Centre, MRF Limited, MRF Road, Tiruvottiyur, Chennai 600019, India
| | - Archita Patnaik
- Colloid
and Interface Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Madras, Chennai600036, India
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20
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Ngeow YW, Williams DR, Chapman AV, Heng JYY. Surface Energy Mapping of Modified Silica Using IGC Technique at Finite Dilution. ACS OMEGA 2020; 5:10266-10275. [PMID: 32426583 PMCID: PMC7226851 DOI: 10.1021/acsomega.9b03920] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 03/31/2020] [Indexed: 06/11/2023]
Abstract
The reinforcing silica filler, which can be more than 40% of an elastomer composite, plays a key role to achieve the desired mechanical properties in elastomer vulcanizates. However, the highly hydrophilic nature of silica surface causes silica particle aggregation. It remained a challenge for many tire manufacturers when using silica-filled elastomer compounds. Here, the silica surface energy changes when the surface is modified with coupling or noncoupling silanes; coupling silanes can covalently bond the silica to the elastomers. The surface energy of silica was determined using inverse gas chromatography (IGC) at finite dilution (FD-IGC) and found to be reduced by up to 50% when the silica surface was silanized. The spatial distribution of silica aggregates within the tire matrix is determined by transmission electron microscopy (TEM) and a direct correlation between aggregate size (silica microdispersion) and work of cohesion from IGC is reported, highlighting surface energy and work of cohesion being excellent indicators of the degree of dispersion of silica aggregates.
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Affiliation(s)
- Yen Wan Ngeow
- Technology
and Engineering Division, Malaysian Rubber
Board, 47000 Sungai Buloh, Selangor, Malaysia
| | - Daryl R. Williams
- Department
of Chemical Engineering, Imperial College
London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Andrew V. Chapman
- Tun
Abdul Razak Research Centre, Brickendonbury, Hertford SG13 8NL, United Kingdom
| | - Jerry Y. Y. Heng
- Department
of Chemical Engineering, Imperial College
London, South Kensington Campus, London SW7 2AZ, United Kingdom
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21
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Qian Y, Dong F, Guo L, Guo J, Shaghaleh H, Wang Y, Xu X, Wang S, Liu S. Preparation and properties of room temperature vulcanized silicone rubber using triethoxy(2-(4-methylcyclohex-3-en-1-yl)propyl)silane as a novel cross-linking agent. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2019.109068] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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22
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Weng P, Tang Z, Guo B. Effects of Alkalinity of Ionic Liquid on Catalyzed Silanization in Rubber/Silica Composites. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04027] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peijin Weng
- Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Zhenghai Tang
- Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Baochun Guo
- Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
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23
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Hussain M, Yasin S, Adnan Akram M, Xu H, Song Y, Zheng Q. Influence of Ionic Liquids on Structure and Rheological Behaviors of Silica-Filled Butadiene Rubber. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03494] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Munir Hussain
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Sohail Yasin
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Muhammad Adnan Akram
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Huilong Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yihu Song
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qiang Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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24
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Li Q, Zhong B, Zhang W, Jia Z, Jia D, Qin S, Wang J, Razal JM, Wang X. Ti 3C 2 MXene as a new nanofiller for robust and conductive elastomer composites. NANOSCALE 2019; 11:14712-14719. [PMID: 31343651 DOI: 10.1039/c9nr03661j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ti3C2 MXene with a layered 2D structure was applied as a novel functional filler in rubber for the first time. A facile and green method was proposed to fabricate rubber/Ti3C2 nanocomposites via a freeze-drying & mechanical mixing process. It was found that Ti3C2 with ∼1 nm thickness fabricated by etching Al from Ti3AlC2 phases can be dispersed in styrene-butadiene rubber (SBR) evenly in a single-layered state. Mechanical strength and electrical and thermal conductivities of the rubber nanocomposites were remarkably enhanced by the incorporation of Ti3C2, showing dramatic improvement compared with reduced graphene oxide (rGO) reinforced rubber composites. For example, the thermal conductivity of SBR nanocomposites with 3 wt% rGO was 0.265 W m-1 k-1, while that of SBR nanocomposites with only 1.96 wt% Ti3C2 reached 0.477 W m-1 k-1. Meanwhile, the resistance of rubber/Ti3C2 nanocomposites was stable under complex deformation and their sensitivity was well recovered during stretching/shrinking cycles under large strain. Moreover, it was discovered that incorporating Ti3C2 in rubber nanocomposites dramatically improved the wet skid resistance and thermal stability without increasing the rolling resistance. Ti3C2 MXene with a distinctive structure and properties as well as uniform dispersion will have more potential for the preparation of high-performance rubber nanocomposites, especially for green tires and flexible sensors.
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Affiliation(s)
- Qunyang Li
- Key Lab of Guangdong for High Property and Functional Polymer Materials, South China University of Technology, No. 381 Wushan Road, Guangzhou 510640, China.
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25
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Cheng Z, Yan M, Cao L, Huang J, Cao X, Yuan D, Chen Y. Design of Nitrile Rubber with High Strength and Recycling Ability Based on Fe3+–Catechol Group Coordination. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05993] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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