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Liu S, Chen Y, Han D, Tian X, Ma D, Jie X, Zhang J. Extraction process and characterization of Taraxacum kok-saghyz (TKS) latex. Heliyon 2024; 10:e25351. [PMID: 38379982 PMCID: PMC10877186 DOI: 10.1016/j.heliyon.2024.e25351] [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: 06/08/2023] [Revised: 01/10/2024] [Accepted: 01/25/2024] [Indexed: 02/22/2024] Open
Abstract
Taraxacum kok-saghyz (TKS) latex is a natural latex produced from its root, and its extraction optimization process is mainly studied in the present paper. The composition of fresh roots of TKS was quantitatively analyzed, and the results showed that the moisture content of the fresh root was approximately 70 %, and the rubber content averaged to 6 % (dry weight ratio). An optimal process route for extracting the TKS latex was finally determined, making the extraction efficiency reach about 80 %, and a new latex extraction process was established and optimized and named "the process of Buffer Extraction TKS Latex (BETL)". Hevea latex, extracted TKS latex and TKS latex collected directly from the broken roots were compared for study. The results showed that, like Hevea latex, the appearance of TKS latex was milky white; and after centrifugation, both showed four layers from top to bottom: rubber particles, Frey-Wyssling particles, C-serum and lutoids. The results of the composition analysis showed that the concentration of TKS latex ranged from 54.54 % to 68.25 %, which is close to that of concentrated Hevea latex; the moisture content of TKS latex was between 31.75 % and 45.46 %. The protein content of TKS latex was 13.51 mg/mL, which was lower than that of Hevea latex at the same rubber hydrocarbon concentration. The molecular structures and properties of Hevea latex, the extracted TKS latex, and the collected TKS latex were characterized by FTIR, 13C NMR, GPC, TG, SEM and LPSA, and the results showed that the main components and structure of the three latexes were similar, which are all cis-1,4-polyisoprene, and include the proteins and lipids. The distributions molecular weights of the three latexes all showed a bimodal distribution, but the molecular weight of the latex collected from TKS was lower, which indicates the larger molecules were difficult to flow outside the root automatically. The Hevea latex and TKS latex rubber particles were both core-shell structure and the size distribution were bimodal, which was consistent with the GPC analysis results.
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Affiliation(s)
- Shiqi Liu
- Engineering Research Center of Elastomer Materials Energy Conservation and Resources, Ministry of Education, Beijing University of Chemical and Technology, Beijing 100029, China
- Center of Advanced Elastomer Materials, College of Material Science & Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yunhan Chen
- Engineering Research Center of Elastomer Materials Energy Conservation and Resources, Ministry of Education, Beijing University of Chemical and Technology, Beijing 100029, China
- Center of Advanced Elastomer Materials, College of Material Science & Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Dongren Han
- Hangzhou Guoren Electrical Engineering Co., Ltd, Hangzhou 311222, China
| | - Xuefa Tian
- Beijing Huateng Rubber and Plastic Latex Products Co., Ltd, Beijing 101116, China
| | - Dongli Ma
- Beijing Huateng Rubber and Plastic Latex Products Co., Ltd, Beijing 101116, China
| | - Xiang Jie
- Engineering Research Center of Elastomer Materials Energy Conservation and Resources, Ministry of Education, Beijing University of Chemical and Technology, Beijing 100029, China
- Center of Advanced Elastomer Materials, College of Material Science & Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jichuan Zhang
- Engineering Research Center of Elastomer Materials Energy Conservation and Resources, Ministry of Education, Beijing University of Chemical and Technology, Beijing 100029, China
- Center of Advanced Elastomer Materials, College of Material Science & Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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2
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Mofidi SSH, Naghavi MR, Sabokdast M, Jariani P, Zargar M, Cornish K. Effect of drought stress on natural rubber biosynthesis and quality in Taraxacum kok-saghyz roots. PLoS One 2024; 19:e0295694. [PMID: 38252676 PMCID: PMC10802950 DOI: 10.1371/journal.pone.0295694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/23/2023] [Indexed: 01/24/2024] Open
Abstract
Taraxacum kok-saghyz (TKS) is a potential source of natural rubber (NR) that can be grown in temperate regions with limited water availability. However, the effect of drought stress on NR production and properties in TKS isn't well studied. This study examined how different levels of drought stress (30, 60 and 90%) influenced the NR content, molecular weight (Mw), glass transition temperature (Tg), gene expression, and biochemical parameters in TKS roots. The results showed that drought stress didn't significantly change the NR content, but increased the Mw and the expression of CPT and SRPP genes, which are involved in NR biosynthesis. The NR from TKS roots (TNR) had a high Mw of 994,000 g/mol and a low Tg of below -60°C under normal irrigation, indicating its suitability for industrial applications. Drought stress also triggered the accumulation of proline, H2O2, MDA, and antioxidant enzymes (CAT, APX, GPX) in TKS roots significantly, indicating a drought tolerance mechanism. These findings suggest that TKS can produce high-quality NR under drought stress conditions and provide a sustainable alternative to conventional NR sources.
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Affiliation(s)
- Seyed Shahab Hedayat Mofidi
- Division of Biotechnology, Department of Agronomy and Plant Breeding, College of Agricultural and Natural Resources, University of Tehran, Karaj, Iran
| | - Mohammad Reza Naghavi
- Division of Biotechnology, Department of Agronomy and Plant Breeding, College of Agricultural and Natural Resources, University of Tehran, Karaj, Iran
- Department of Agrobiotechnology, Institute of Agriculture, RUDN University, Moscow, Russia
| | - Manijeh Sabokdast
- Division of Biotechnology, Department of Agronomy and Plant Breeding, College of Agricultural and Natural Resources, University of Tehran, Karaj, Iran
| | - Parisa Jariani
- Division of Biotechnology, Department of Agronomy and Plant Breeding, College of Agricultural and Natural Resources, University of Tehran, Karaj, Iran
| | - Meisam Zargar
- Department of Agrobiotechnology, Institute of Agriculture, RUDN University, Moscow, Russia
| | - Katrina Cornish
- Departments of Horticulture and Crop Science, and Food, Agricultural and Biological Engineering, The Ohio State University, Wooster, OH, United States of America
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Wang H, Fan X, Yu H, Li J, Cui X, Xu X. Characterization of natural rubber concerning its components and molecular weight in Taraxacum kok-saghyz Rodin using pyrolysis gas chromatography-mass spectrometry. J Sep Sci 2023; 46:e2201041. [PMID: 37609805 DOI: 10.1002/jssc.202201041] [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: 12/21/2022] [Revised: 06/28/2023] [Accepted: 07/18/2023] [Indexed: 08/24/2023]
Abstract
Taraxacum kok-saghyz Rodin (TKS) has abundant natural rubber in its root and the molecular weight of its natural rubber is higher than that in Hevea brasiliensis. Thus, TKS is an excellent alternative for the commercial production of natural rubber. The content and molecular weight of natural rubber are two qualitative indicators. Efficient determination for both indicators is still a challenge. In this study, we developed a method to simultaneously determine the content and molecular weight of natural rubber in TKS with pyrolysis-gas chromatography-mass spectrometry. The content of natural rubber was quantified by internal standard method. We optimized the pyrolysis temperature and chromatographic method during content determination. The limits of detection and quantification were 0.47 and 1.56 μg, respectively. In addition, the arachidonic acid methyl ester, an unsaturated fatty acid proposed from the α-end group of natural rubber, was quantified to obtain the number of natural rubber polymers. Based on the content and the polymer number, we also quantified the molecular weight of natural rubber. Thus, the content and molecular weight of natural rubber were simultaneously determined in TKS. Our study provides a new perspective for the high throughput analysis of natural rubber.
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Affiliation(s)
- Haijing Wang
- State Key Laboratory of Vegetable Biobreeding, Sino-Dutch Joint Laboratory of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiuli Fan
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, The Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hong Yu
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, The Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Jiayang Li
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, The Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xia Cui
- State Key Laboratory of Vegetable Biobreeding, Sino-Dutch Joint Laboratory of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xia Xu
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, The Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
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Zhao S, Jie X, Ma Z, Wang Z, Zhang J, Li Y, Nie Q, Ma Y. Preparation of Taraxacum kok-saghyz Rubber and Biofuel Ethanol Simultaneously by the Yeast Fermentation Process. ACS OMEGA 2023; 8:24185-24197. [PMID: 37457490 PMCID: PMC10339325 DOI: 10.1021/acsomega.2c07870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 04/28/2023] [Indexed: 07/18/2023]
Abstract
Taraxacum kok-saghyz(TKS) rubber is considered the most ideal alternative source of natural rubber (NR). Extracting rubber from TKS with high quality, low cost, and low pollution is the basis of commercial development. The TKS roots were subjected to morphological observation and detailed compositional analysis. Scanning electron microscopy (SEM) images confirm that rubber filaments are physically entangled with plant tissues due to differences in molecular polarity. Compared with the traditional solvent TKS rubber extraction process, a new rubber extraction process developed in this study, namely, the microbial extraction (″ME″) process, is less harmful to the environment and lower in cost. The ″ME″ process is divided into three steps: dilute acid pretreatment process, enzyme degradation process, and fermentation process. After each step is completed, the purity of TKS rubber will gradually increase from 84.8% to 93.8 to 95.5%. The TKS rubber finally obtained fully meets the requirements of the traditional rubber industry, especially the tire industry. Besides, the yield of biofuel ethanol, a by-product of cellulose fermentation, reaches 2.05 g/100 g of TKS roots (dry weight), which can effectively reduce the production cost of TKS rubber. In the rubber extraction process, microorganisms have little effect on the quality of TKS rubber. The results show that the molecular weight and chemical structure of TKS rubber is very close to NR, so the ″ME″ process can be used as a new method for large-scale extraction of TKS rubber.
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Affiliation(s)
- Shuai Zhao
- Center
of Advanced Elastomer Materials, College of Material Science &
Engineering, Beijing University of Chemical
Technology, Beijing 100029, China
| | - Xiang Jie
- Center
of Advanced Elastomer Materials, College of Material Science &
Engineering, Beijing University of Chemical
Technology, Beijing 100029, China
| | - Zhe Ma
- Center
of Advanced Elastomer Materials, College of Material Science &
Engineering, Beijing University of Chemical
Technology, Beijing 100029, China
| | - Zheng Wang
- College
of Life Science and Technology, Beijing
University of Chemical Technology, Beijing 100029, China
| | - Jichuan Zhang
- Center
of Advanced Elastomer Materials, College of Material Science &
Engineering, Beijing University of Chemical
Technology, Beijing 100029, China
- Energy
Conservation and Resource Utilization Engineering Research Center
of Elastomer Materials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yushi Li
- Shandong
Linglong Tyre Co., Ltd, Zhaoyuan 265406, China
| | - Qiuhai Nie
- Shandong
Linglong Tyre Co., Ltd, Zhaoyuan 265406, China
| | - Yong Ma
- Shandong
Linglong Tyre Co., Ltd, Zhaoyuan 265406, China
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Ramirez Cadavid DA, Hathwaik U, Cornish K, McMahan C, Michel FC. Alkaline pretreatment of Taraxacum kok-saghyz (TK) roots for the extraction of natural rubber (NR). Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Composition properties of rubber from parts of Taraxacum Kok-saghyz roots. J RUBBER RES 2022. [DOI: 10.1007/s42464-021-00141-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Dinkeloo K, Cantero AM, Paik I, Vulgamott A, Ellington AD, Lloyd A. Genetic transformation technologies for the common dandelion, Taraxacum officinale. PLANT METHODS 2021; 17:59. [PMID: 34107973 PMCID: PMC8191202 DOI: 10.1186/s13007-021-00760-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 05/27/2021] [Indexed: 05/23/2023]
Abstract
BACKGROUND Taraxacum officinale, or the common dandelion, is a widespread perennial species recognized worldwide as a common lawn and garden weed. Common dandelion is also cultivated for use in teas, as edible greens, and for use in traditional medicine. It produces latex and is closely related to the Russian dandelion, T. kok-saghyz, which is being developed as a rubber crop. Additionally, the vast majority of extant common dandelions reproduce asexually through apomictically derived seeds- an important goal for many major crops in modern agriculture. As such, there is increasing interest in the molecular control of important pathways as well as basic molecular biology and reproduction of common dandelion. RESULTS Here we present an improved Agrobacterium-based genetic transformation and regeneration protocol, a protocol for generation and transformation of protoplasts using free DNA, and a protocol for leaf Agrobacterium infiltration for transient gene expression. These protocols use easily obtainable leaf explants from soil-grown plants and reagents common to most molecular plant laboratories. We show that common markers used in many plant transformation systems function as expected in common dandelion including fluorescent proteins, GUS, and anthocyanin regulation, as well as resistance to kanamycin, Basta, and hygromycin. CONCLUSION Reproducible, stable and transient transformation methods are presented that will allow for needed molecular structure and function studies of genes and proteins in T. officinale.
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Affiliation(s)
- Kasia Dinkeloo
- Department of Molecular Biosciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX, 78712, USA.
| | - Araceli Maria Cantero
- Department of Molecular Biosciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Inyup Paik
- Department of Molecular Biosciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Alexa Vulgamott
- Department of Molecular Biosciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Andrew D Ellington
- Department of Molecular Biosciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Alan Lloyd
- Department of Molecular Biosciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX, 78712, USA.
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8
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Graphene Layers Functionalized with A Janus Pyrrole-Based Compound in Natural Rubber Nanocomposites with Improved Ultimate and Fracture Properties. Polymers (Basel) 2020; 12:polym12040944. [PMID: 32325776 PMCID: PMC7240464 DOI: 10.3390/polym12040944] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/09/2020] [Accepted: 04/14/2020] [Indexed: 01/19/2023] Open
Abstract
The ultimate properties and resistance to fracture of nanocomposites based on poly(1,4-cis-isoprene) from Hevea Brasiliensis (natural rubber, NR) and a high surface area nanosized graphite (HSAG) were improved by using HSAG functionalized with 2-(2,5-dimethyl-1H-pyrrol-1-yl)propane-1,3-diol (serinol pyrrole) (HSAG-SP). The functionalization reaction occurred through a domino process, by simply mixing HSAG and serinol pyrrole and heating at 180 °C. The polarity of HSAG-SP allowed its dispersion in NR latex and the isolation of NR/HSAG-SP masterbatches via coagulation. Nanocomposites, based either on pristine HSAG or on HSAG-SP, were prepared through traditional melt blending and cured with a sulphur-based system. The samples containing HSAG-SP revealed ultimate dispersion of the graphitic filler with smaller aggregates and higher amounts of few layers stacks and isolated layers, as revealed by transmission electron microscopy. With HSAG-SP, better stress and elongation at break and higher fracture resistance were obtained. Indeed, in the case of HSAG-SP-based composites, fracture occurred at larger deformation and with higher values of load and, at the highest filler content (24 phr), deviation of fracture propagation was observed. These results have been obtained with a moderate functionalization of the graphene layers (about 5%) and normal lab facilities. This work reveals a simple and scalable way to prepare tougher NR-based nanocomposites and indicates that the dispersion of a graphitic material in a rubber matrix can be improved without using an extra-amount of mechanical energy, just by modifying the chemical nature of the graphitic material through a sustainable process, avoiding the traditional complex approach, which implies oxidation to graphite oxide and subsequent partial reduction.
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9
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Rational Rubber Extraction and Simultaneous Determination of Rubber Content and Molecular Weight Distribution in Taraxacum kok-saghyz Rodin by Size-Exclusion Chromatography. Chromatographia 2019. [DOI: 10.1007/s10337-019-03773-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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10
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Sattar MA, Nair AS, Xavier PJ, Patnaik A. Natural rubber-SiO 2 nanohybrids: interface structures and dynamics. SOFT MATTER 2019; 15:2826-2837. [PMID: 30816894 DOI: 10.1039/c9sm00254e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Homogeneous dispersion of silica nanoparticles (SiO2 NPs) in natural rubber (NR) is a key challenge for engineering high-performance nanocomposites and elucidation of their structure on a molecular basis. Towards this, the present work devised a novel route for obtaining 3D self-assembled SiO2 NP-NR nanocomposites under aqueous conditions and in the presence of Mg2+, by establishing a molecular bridge that clamped the negatively charged NR and SiO2 colloidal particles with a favoured NR-SiO2 NP hetero-aggregation. The characteristic NR-SiO2 NP hetero-aggregates displayed a decreased heat capacity with increase in the SiO2 mass-fraction, implying a restricted NR chain mobility. Such changes in the interfacial layers were tapped by 29Si NMR, DFT calculations and molecular dynamics simulations towards a mechanistic understanding of the structure and dynamics of the NR/SiO2 NP hybrid. Simple models were used to illustrate basic ideas; specific electrostatic interactions such as ion-dipole and H-bonding interactions proved to be the driving forces for the organized assembly leading to the NR-SiO2 hetero-aggregate over the NR-NR or SiO2 NP-SiO2 NP homo-aggregate. Molecular dynamics simulation of the aqueous canonical ensemble of the hybrid showed the stable molecular conformation to reveal a SiO2 NP spherical core encapsulated by a hydrophobically interconnected NR polymer layer as the outer shell, as a unique structural model. Specifically, the lipid end of the NR was involved electrostatically while the lysine end (the protein part of NR) H-bonded to the core silica cluster thereby restricting random aggregation. The calculated negative free energy changes for the hetero-aggregate composites via their vibrational and rotational spectra proved the spontaneity of composite formation.
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Affiliation(s)
- Md Abdul Sattar
- Colloid and Interface Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India. and MRF Limited, R & D Centre, MRF Road, Tiruvottiyur, Chennai-600019, India
| | - A Sreekumaran Nair
- MRF Limited, R & D Centre, MRF Road, Tiruvottiyur, Chennai-600019, India
| | - P J Xavier
- MRF Limited, R & D Centre, MRF Road, Tiruvottiyur, Chennai-600019, India
| | - Archita Patnaik
- Colloid and Interface Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
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Preparation of Butadiene-Isoprene Copolymer with High Vinyl Contents by Al(OPhCH₃)(i-Bu)₂/MoO₂Cl₂∙TNPP. Polymers (Basel) 2019; 11:polym11030527. [PMID: 30960511 PMCID: PMC6473405 DOI: 10.3390/polym11030527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 03/15/2019] [Accepted: 03/15/2019] [Indexed: 11/17/2022] Open
Abstract
In this study, a butadiene-isoprene coordination polymerization was initiated by a binary molybdenum (Mo)-based catalytic system consisting of modified MoO2Cl2 as the primary catalyst, triethyl aluminum substituted by m-cresol as the co-catalyst and tris(nonyl phenyl) phosphate (TNPP) as the ligand. The effects of the amount of catalyst and type of co-catalyst were investigated in detail. Experimental results indicated that when the butadiene-isoprene coordination polymerization was initiated by the binary Mo-based catalytic system, the monomer conversion could reach 90%. The resulting butadiene units were primarily based on 1,2-structures, and the reactivity ratios of butadiene and isoprene were 1.13 and 0.31, respectively. The reaction in the catalytic system was attributed to the non-ideal and non-constant ratio copolymerization. When the addition of isoprene monomers was relatively low, the isoprene units on the butadiene-isoprene copolymers were primarily based on the 1,2- and 3,4-structures. Moreover, the orientation of active centers to 1,2- and 3,4-structures gradually decreased with an increase in the addition of isoprene monomers, which resulted in the generation of high vinyl butadiene-isoprene copolymers.
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12
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Daniele S, Mariconda A, Guerra G, Longo P, Giannini L. Single-phase block copolymers by cross-metathesis of 1,4-cis-polybutadiene and 1,4-cis-polyisoprene. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.10.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Junkong P, Cornish K, Ikeda Y. Characteristics of mechanical properties of sulphur cross-linked guayule and dandelion natural rubbers. RSC Adv 2017. [DOI: 10.1039/c7ra08554k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Roles of non-rubber components in guayule and dandelion natural rubbers on the mechanical properties are firstly revealed by analysing the Mullins effect, dynamic mechanical properties and strain-induced crystallization from a new viewpoint.
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Affiliation(s)
- P. Junkong
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - K. Cornish
- Departments of Food, Agricultural and Biological Engineering, and Horticulture and Crop Science
- Ohio Agricultural Research and Development Center
- The Ohio State University
- Wooster
- USA
| | - Y. Ikeda
- Center for Rubber Science and Technology
- Faculty of Molecular Chemistry and Engineering
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
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Ikeda Y, Junkong P, Ohashi T, Phakkeeree T, Sakaki Y, Tohsan A, Kohjiya S, Cornish K. Strain-induced crystallization behaviour of natural rubbers from guayule and rubber dandelion revealed by simultaneous time-resolved WAXD/tensile measurements: indispensable function for sustainable resources. RSC Adv 2016. [DOI: 10.1039/c6ra22455e] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Guayule and rubber dandelion natural rubbers are useful alternatives forHeveanatural rubber in terms of their strain-induced crystallization behaviours.
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Affiliation(s)
- Yuko Ikeda
- Faculty of Molecular Chemistry and Engineering
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Preeyanuch Junkong
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Takumi Ohashi
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Treethip Phakkeeree
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Yuta Sakaki
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Atitaya Tohsan
- Department of Materials and Production Technology Engineering
- Faculty of Engineering
- King Mongkut's University of Technology North Bangkok
- Bangkok 10800
- Thailand
| | - Shinzo Kohjiya
- Professor Emeritus of Kyoto University
- Kyoto 615-0925
- Japan
| | - Katrina Cornish
- Departments of Food, Agricultural and Biological Engineering, and Horticulture and Crop Science
- Ohio Agricultural Research and Development Center (OARDC)
- The Ohio State University
- Wooster
- USA
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