1
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Huang Z, Li A, Chen J, Luo Y. Syndiospecific Copolymerization of Styrene with para-Methoxystyrene Catalyzed by Functionalized Fluorenyl-Ligated Rare-Earth Metal Complexes. Inorg Chem 2023; 62:4322-4329. [PMID: 36853928 DOI: 10.1021/acs.inorgchem.3c00004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
The development of efficient catalysts for the copolymerization of nonpolar monomers with polar monomers remains a great challenging task in polymer synthesis. A one-pot reaction of anhydrous LnCl3 with pyridyl-methylene-functionalized octamethylfluorenyl lithium OctFlu-CH2PyLi in a 1:1 molar ratio, followed by alkylation with 2 equiv of LiCH2SiMe3 in THF afforded the fluorenyl-ligated rare-earth metal bis(alkyl) complexes (OctFlu-CH2Py)Ln(CH2SiMe3)2(THF) [Ln = Sc (1), Y (2)]. Both complexes were isolated as neutral species and were characterized by NMR spectrum and elemental analysis. Complex 2 was subjected to single-crystal X-ray diffraction, which showed that the whole modified fluorenyl ligand was coordinated to Y3+ in the η5/κ1 mode to form a constrained geometry configuration. In the presence of excess AliBu3, and on activation with 1 equiv of [Ph3C][B(C6F5)4] in toluene, complexes 1 and 2 became active for both styrene (St) and para-methoxystyrene (pMOS) polymerization, giving polymers with high syndiotacticity (rrrr > 99%) without solvent extraction. Moreover, the ternary catalyst system composed of complex 2/AliBu3/[Ph3C][B(C6F5)4] was highly effective for the syndiospecific copolymerization of styrene with pMOS, producing random copolymers with high molecular weights and narrow molecular weight distributions. The contents of pMOS in the copolymers could be easily tuned in a wide range (11-93 mol %) by simply changing the pMOS-to-St feed ratios.
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Affiliation(s)
- Zhongxian Huang
- School of Materials Science and Chemical Engineering, Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, Ningbo University, Ningbo 315211, P. R. China
| | - Aiyuan Li
- Ningbo Polytechnic, Ningbo 315800, P. R. China
| | - Jue Chen
- School of Biological and Chemical Engineering, NingboTech University, Ningbo 315100, P. R. China
| | - Yunjie Luo
- School of Materials Science and Chemical Engineering, Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, Ningbo University, Ningbo 315211, P. R. China
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2
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You H, Zhuo C, Yan S, Wang E, Cao H, Liu S, Wang X. CO 2 Deprotection-Mediated Switchable Polymerization for Precise Construction of Block Copolymers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Huai You
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Chunwei Zhuo
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Shuo Yan
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Enhao Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Han Cao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Shunjie Liu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Xianhong Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
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3
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Design, synthesis and characterization of SEBS anion exchange membranes with ultrahigh dimensional stability. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03115-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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4
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Maji P, Naskar K. Styrenic block copolymer‐based thermoplastic elastomers in smart applications: Advances in synthesis, microstructure, and structure–property relationships—A review. J Appl Polym Sci 2022. [DOI: 10.1002/app.52942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Purbasha Maji
- Rubber Technology Centre Indian Institute of Technology Kharagpur West Bengal India
| | - Kinsuk Naskar
- Rubber Technology Centre Indian Institute of Technology Kharagpur West Bengal India
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5
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Zenati A. Triblock Azo copolymers: RAFT synthesis, properties, thin film self-assembly and applications. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2021.2015779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Athmen Zenati
- Refining and Petrochemistry, Division of Method and Operation, Sonatrach, Arzew, Algeria
- Central Directorate of Research and Development, Sonatrach, Boumerdes, Algeria
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6
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Harth E, Keyes A, Dau H, Matyjaszewski K. Tandem Living Insertion and Controlled Radical Polymerization for Polyolefin-Polyvinyl Block Copolymers. Angew Chem Int Ed Engl 2021; 61:e202112742. [PMID: 34967088 DOI: 10.1002/anie.202112742] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Indexed: 11/07/2022]
Abstract
Practical synthesis of polyolefin-polyvinyl block copolymers remains a challenge for transition-metal catalyzed polymerizations. Common approaches functionalize polyolefins for post-radical polymerization via insertion methods, yet sacrifice the livingness of the olefin polymerization. This work identifies an orthogonal radical/spin coupling technique which affords tandem living insertion and controlled radical polymerization. The broad tolerance of this coupling technique has been demonstrated for diverse radical/spin traps such as 2,2,5-trimethyl-4-phenyl-3-azahexane-3-nitroxide (TIPNO), 1-oxyl- (2,2,6,6-tetramethylpiperidine) -4-yl-α-bromoisobutyrate (TEMPO-Br), and N-tert -butyl-α-phenylnitrone (PBN). Subsequent controlled radical polymerization is demonstrated with NMP and atom transfer radical polymerization (ATRP), yielding polyolefin-polyvinyl di- and triblock copolymers ( Đ <1.3) with acrylic, vinylic and styrenic segments. These findings highlight radical trapping as an approach to expand the scope of polyolefin functionalization techniques to access polyolefin macroinitiators.
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Affiliation(s)
- Eva Harth
- University of Houston, Chemistry, 406 STL Building, United States, 77004, Houston, UNITED STATES
| | | | - Huong Dau
- University of Houston, Chemistry, UNITED STATES
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7
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Harth E, Keyes A, Dau H, Matyjaszewski K. Tandem Living Insertion and Controlled Radical Polymerization for Polyolefin‐Polyvinyl Block Copolymers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202112742] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Eva Harth
- University of Houston Chemistry 406 STL BuildingUnited States 77004 Houston UNITED STATES
| | | | - Huong Dau
- University of Houston Chemistry UNITED STATES
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8
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Luk SB, Métafiot A, Morize J, Edeh E, Marić M. Hydrogenation of poly(myrcene) and poly(farnesene) using diimide reduction at ambient pressure. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210479] [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)
- Sharmaine B. Luk
- Department of Chemical Engineering McGill University Montreal Quebec Canada
| | - Adrien Métafiot
- Department of Chemical Engineering McGill University Montreal Quebec Canada
| | - Judith Morize
- Département Mesures Physiques Institut Universitaire de Technologie, Université Toulouse III – Paul Sabatier Toulouse France
| | - Emmanuel Edeh
- Department of Chemical Engineering McGill University Montreal Quebec Canada
| | - Milan Marić
- Department of Chemical Engineering McGill University Montreal Quebec Canada
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9
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Xu D, Wang W, Zheng Y, Tian S, Chen Y, Lu Z, Wang Y, Liu K, Wang D. Graft Copolymer Elastomers with Polar Polyacrylonitrile as Semicrystalline Side Chains: Excellent Toughness and Healability. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01716] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Deli Xu
- School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Wenwen Wang
- School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Yuzhu Zheng
- Institute of Science and Technology, Wuhan Textile University, Wuhan 430200, China
| | - Shiyou Tian
- School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Yuanli Chen
- School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Zhentan Lu
- School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Yuedan Wang
- School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Ke Liu
- School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Dong Wang
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
- Institute of Science and Technology, Wuhan Textile University, Wuhan 430200, China
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
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10
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Lee JC, Park KL, Bae SM, Lee HJ, Baek JW, Lee J, Sa S, Shin EJ, Lee KS, Lee BY. Styrene Moiety-Carrying Diorganozinc Compound Preparation for Polystyrene-Poly(ethylene-co-1-hexene)-Polystyrene Triblock Copolymer Production. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01253] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jong Chul Lee
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
| | - Kyung Lee Park
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
| | - Sung Moon Bae
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
| | - Hyun Ju Lee
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
| | - Jun Won Baek
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, South Korea
| | - Seokpil Sa
- LG Chem Ltd., Daejeon 34122, South Korea
| | | | - Ki Soo Lee
- LG Chem Ltd., Daejeon 34122, South Korea
| | - Bun Yeoul Lee
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
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11
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Guo F, Jiang L, Diao K, Hou Z. Stereoselective copolymerization of 4-( N, N-diphenylamino)styrene and isoprene by a C 5H 5-ligated scandium catalyst: synthesis of amino-functionalized crystalline styrenic thermoplastic elastomers. Polym Chem 2020. [DOI: 10.1039/c9py01789e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Amino-functionalized crystalline styrenic thermoplastic elastomers were prepared by carrying out stereoselective copolymerizations of 4-(N,N-diphenylamino)styrene and isoprene with the use of a C5H5-ligated scandium catalyst.
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Affiliation(s)
- Fang Guo
- State Key Laboratory of Fine Chemicals
- Department of Polymer Science and Engineering
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
| | - Lei Jiang
- State Key Laboratory of Fine Chemicals
- Department of Polymer Science and Engineering
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
| | - Kaiying Diao
- State Key Laboratory of Fine Chemicals
- Department of Polymer Science and Engineering
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
| | - Zhaomin Hou
- State Key Laboratory of Fine Chemicals
- Department of Polymer Science and Engineering
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
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12
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Stasiak JR, Serrani M, Biral E, Taylor JV, Zaman AG, Jones S, Ness T, De Gaetano F, Costantino ML, Bruno VD, Suleiman S, Ascione R, Moggridge GD. Design, development, testing at ISO standards and in vivo feasibility study of a novel polymeric heart valve prosthesis. Biomater Sci 2020; 8:4467-4480. [DOI: 10.1039/d0bm00412j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel polymeric heart valve shows durability equivalent to 25 years in accelerated bench testing, in vitro hydrodynamics equivalent to existing bioprosthetic valves; and good performance in a small acute feasibility study in sheep.
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13
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Wu T, Li J, Wang CY, Ren Q. Moisture curable non-isocynated polyacrylate triblock copolymer elastomers: synthesis and properties. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0710-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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14
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Li S, Yan F, Zhang Z, Dou Y, Zhang W, Cui D. Syndioselective Polymerization of Vinylnaphthalene. Macromol Rapid Commun 2019; 40:e1900061. [DOI: 10.1002/marc.201900061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 02/26/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Shihui Li
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 P. R. China
| | - Fangbing Yan
- Key Laboratory of Automobile Materials of Ministry of EducationDepartment of Materials Science and EngineeringJilin University Changchun 130025 P. R. China
| | - Zhen Zhang
- Key Laboratory of Automobile Materials of Ministry of EducationDepartment of Materials Science and EngineeringJilin University Changchun 130025 P. R. China
| | - Yanli Dou
- Key Laboratory of Automobile Materials of Ministry of EducationDepartment of Materials Science and EngineeringJilin University Changchun 130025 P. R. China
| | - Wanxi Zhang
- Key Laboratory of Automobile Materials of Ministry of EducationDepartment of Materials Science and EngineeringJilin University Changchun 130025 P. R. China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 P. R. China
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15
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Yu H, Yang K, Niu H, Yu J, Dong J, Wang J, Li Y. Syndiospecific Coordination Polymerization of Si-H-Containing Styrenes Catalyzed by Scandium Complex and Synthesis of Styrene-Based Triblock Copolymers. Macromol Rapid Commun 2019; 40:e1900048. [PMID: 30900788 DOI: 10.1002/marc.201900048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 02/20/2019] [Indexed: 11/08/2022]
Abstract
The controlled syndiospecific polymerization of three Si-H-containing styrenes, that is, 4-(methylhydrosilyl)styrene (FSt-1), 4-(dimethylhydrosilyl)styrene (FSt-2) and 4-(diisopropylhydrosilyl)styrene (FSt-3), is realized in the presence of (C5 Me4 SiMe3 )Sc (CH2 C6 H5 )2 (THF)/[Ph3 C][B(C6 F5 )4 ]. Then a series of FSt-b-styrene-b-FSt triblock copolymers (FSt-St-FSt) are synthesized facilely via a sequential monomer feeding process (FSt-2, styrene, and FSt-2, respectively) during the polymerization. The syndiotactic polystyrene (sPS) block in the middle endows the copolymer with high melting point above 250 °C, whereas the Si-H groups on monomer FSt-2 introduce functional pendants to the end-blocks (with Si-H content of 31-63 mol%). Finally by a mild and high-effective hydrosilylation reaction, novel polar-group functionalized sPS is obtained.
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Affiliation(s)
- Hui Yu
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory of Polymer Science and Engineering, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Ke Yang
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory of Polymer Science and Engineering, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Hui Niu
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory of Polymer Science and Engineering, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jialin Yu
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory of Polymer Science and Engineering, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jinghan Dong
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory of Polymer Science and Engineering, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jing Wang
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory of Polymer Science and Engineering, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Yang Li
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory of Polymer Science and Engineering, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
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16
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Zhang Z, Cai ZY, Pan YP, Dou YL, Li SH, Cui DM. Substituent Effects of Pyridyl-methylene Cyclopentadienyl Rare-earth Metal Complexes on Styrene Polymerization. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-019-2209-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Edelmann FT. Lanthanides and actinides: Annual survey of their organometallic chemistry covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.05.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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18
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Li K, Chen ZB, Liu DL, Zhang L, Tang Z, Wang Z, Zhao Y, Liu Z. Design and synthesis study of the thermo‐sensitive copolymer carrier of penicillin G acylase. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4299] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ke Li
- State Key Laboratory of Gansu Advanced Non‐ferrous Metal Materials Lanzhou University of Technology, Materials Science and Engineering Lanzhou 730050 China
| | - Zhen Bin Chen
- State Key Laboratory of Gansu Advanced Non‐ferrous Metal Materials Lanzhou University of Technology, Materials Science and Engineering Lanzhou 730050 China
| | - Dong Lei Liu
- State Key Laboratory of Gansu Advanced Non‐ferrous Metal Materials Lanzhou University of Technology, Materials Science and Engineering Lanzhou 730050 China
| | - Lin Zhang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research Xi'an Jiaotong University Xi'an 710049 China
| | - Zhenghua Tang
- Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy South China University of Technology, Guangzhou Higher Education Mega Centre Guangzhou 510006 China
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy South China University of Technology, Guangzhou Higher Education Mega Centre Guangzhou 510006 China
| | - Zhe Wang
- Chemistry Department Xavier University of Louisiana New Orleans LA 70125 USA
| | - Yu Zhao
- College of Textile and Garment Southwest University Chongqing 400715 China
| | - Zhen Liu
- Department of Physics and Engineering Frostburg State University Frostburg MD 21532 USA
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19
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Synthesis and Properties of SEPS-g-PEO Copolymers with Varying Branch Lengths. CHINESE JOURNAL OF POLYMER SCIENCE 2018. [DOI: 10.1007/s10118-018-2104-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Polystyrene Chain Growth from Di-End-Functional Polyolefins for Polystyrene-Polyolefin-Polystyrene Block Copolymers. Polymers (Basel) 2017; 9:polym9100481. [PMID: 30965784 PMCID: PMC6418507 DOI: 10.3390/polym9100481] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 09/19/2017] [Accepted: 09/29/2017] [Indexed: 01/14/2023] Open
Abstract
Triblock copolymers of polystyrene (PS) and a polyolefin (PO), e.g., PS-block-poly(ethylene-co-1-butene)-block-PS (SEBS), are attractive materials for use as thermoplastic elastomers and are produced commercially by a two-step process that involves the costly hydrogenation of PS-block-polybutadiene-block-PS. We herein report a one-pot strategy for attaching PS chains to both ends of PO chains to construct PS-block-PO-block-PS directly from olefin and styrene monomers. Dialkylzinc compound containing styrene moieties ((CH₂=CHC₆H₄CH₂CH₂)₂Zn) was prepared, from which poly(ethylene-co-propylene) chains were grown via "coordinative chain transfer polymerization" using the pyridylaminohafnium catalyst to afford di-end functional PO chains functionalized with styrene and Zn moieties. Subsequently, PS chains were attached at both ends of the PO chains by introduction of styrene monomers in addition to the anionic initiator Me₃SiCH₂Li·(pmdeta) (pmdeta = pentamethyldiethylenetriamine). We found that the fraction of the extracted PS homopolymer was low (~20%) and that molecular weights were evidently increased after the styrene polymerization (ΔMn = 27⁻54 kDa). Transmission electron microscopy showed spherical and wormlike PS domains measuring several tens of nm segregated within the PO matrix. Optimal tensile properties were observed for the sample containing a propylene mole fraction of 0.25 and a styrene content of 33%. Finally, in the cyclic tensile test, the prepared copolymers exhibited thermoplastic elastomeric properties with no breakage up over 10 cycles, which is comparable to the behavior of commercial-grade SEBS.
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Park SS, Kim CS, Kim SD, Kwon SJ, Lee HM, Kim TH, Jeon JY, Lee BY. Biaxial Chain Growth of Polyolefin and Polystyrene from 1,6-Hexanediylzinc Species for Triblock Copolymers. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01365] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Seung Soo Park
- Department of Molecular Science
and Technology, Ajou University, Suwon 443-749, South Korea
| | - Chung Sol Kim
- Department of Molecular Science
and Technology, Ajou University, Suwon 443-749, South Korea
| | - Sung Dong Kim
- Department of Molecular Science
and Technology, Ajou University, Suwon 443-749, South Korea
| | - Su Jin Kwon
- Department of Molecular Science
and Technology, Ajou University, Suwon 443-749, South Korea
| | - Hyun Mo Lee
- Department of Molecular Science
and Technology, Ajou University, Suwon 443-749, South Korea
| | - Tae Hee Kim
- Department of Molecular Science
and Technology, Ajou University, Suwon 443-749, South Korea
| | - Jong Yeob Jeon
- Department of Molecular Science
and Technology, Ajou University, Suwon 443-749, South Korea
| | - Bun Yeoul Lee
- Department of Molecular Science
and Technology, Ajou University, Suwon 443-749, South Korea
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