101
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Xia Q, Cui Y, Yuan D, Wang Y, Yao Y. Synthesis and characterization of lanthanide complexes stabilized by N -aryl substituted β -ketoiminato ligands and their application in the polymerization of rac -lactide. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.06.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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102
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Bai D, Liu H, Bai H, Zhang Q, Fu Q. Low-Temperature Sintering of Stereocomplex-Type Polylactide Nascent Powder: Effect of Crystallinity. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01794] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Dongyu Bai
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Huili Liu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Hongwei Bai
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Qin Zhang
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Qiang Fu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
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103
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Bai H, Deng S, Bai D, Zhang Q, Fu Q. Recent Advances in Processing of Stereocomplex-Type Polylactide. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700454] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 07/26/2017] [Indexed: 01/18/2023]
Affiliation(s)
- Hongwei Bai
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 P. R. China
| | - Shihao Deng
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 P. R. China
| | - Dongyu Bai
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 P. R. China
| | - Qin Zhang
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 P. R. China
| | - Qiang Fu
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 P. R. China
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104
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Shi X, Jing Z, Zhang G, Xu Y, Yao Y. Fully bio-based poly(ɛ-capolactone)/poly(lactide) alternating multiblock supramolecular polymers: Synthesis, crystallization behavior, and properties. J Appl Polym Sci 2017. [DOI: 10.1002/app.45575] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Xuetao Shi
- MOE Key Lab of Applied Physics and Chemistry in Space; School of Science, Northwestern Polytechnical University; Xi'an 710072 China
| | - Zhanxin Jing
- MOE Key Lab of Applied Physics and Chemistry in Space; School of Science, Northwestern Polytechnical University; Xi'an 710072 China
| | - Guangcheng Zhang
- MOE Key Lab of Applied Physics and Chemistry in Space; School of Science, Northwestern Polytechnical University; Xi'an 710072 China
| | - Yan Xu
- MOE Key Lab of Applied Physics and Chemistry in Space; School of Science, Northwestern Polytechnical University; Xi'an 710072 China
| | - Yao Yao
- MOE Key Lab of Applied Physics and Chemistry in Space; School of Science, Northwestern Polytechnical University; Xi'an 710072 China
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105
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Rosen T, Goldberg I, Navarra W, Venditto V, Kol M. Divergent [{ONNN}Mg-Cl] complexes in highly active and living lactide polymerization. Chem Sci 2017; 8:5476-5481. [PMID: 28970927 PMCID: PMC5613742 DOI: 10.1039/c7sc01514c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 05/25/2017] [Indexed: 12/23/2022] Open
Abstract
Chloro-magnesium complexes of divergent tetradentate-monoanionic {ONNN}-type ligands which formed as either mononuclear or dinuclear complexes are reported. These complexes catalyze the ring-opening polymerization of lactide with high activity and in a living manner, and enable the synthesis of well-defined stereo-diblock copolymers with Mn > 200 kDa, as well as stereo-n-block copolymers (n = tri, tetra) with high molecular weights by sequential monomer addition. Thermal and crystallographic characterizations revealed that even the very high molecular weight PLA copolymers crystallized in a stereocomplex phase, and that their degradation temperature was as high as 354 °C.
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Affiliation(s)
- Tomer Rosen
- The School of Chemistry , Tel Aviv University , Ramat Aviv , Tel Aviv 69978 , Israel .
| | - Israel Goldberg
- The School of Chemistry , Tel Aviv University , Ramat Aviv , Tel Aviv 69978 , Israel .
| | - Wanda Navarra
- Department of Chemistry and Biology A. Zambelli , INSTM Research Unit , University of Salerno , Via Giovanni Paolo II 132 , I-84084 Fisciano , SA , Italy .
| | - Vincenzo Venditto
- Department of Chemistry and Biology A. Zambelli , INSTM Research Unit , University of Salerno , Via Giovanni Paolo II 132 , I-84084 Fisciano , SA , Italy .
| | - Moshe Kol
- The School of Chemistry , Tel Aviv University , Ramat Aviv , Tel Aviv 69978 , Israel .
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106
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Jikei M, Yamadoi Y, Suga T, Matsumoto K. Stereocomplex formation of poly(l-lactide)-poly(ε-caprolactone) multiblock copolymers with Poly(d-lactide). POLYMER 2017. [DOI: 10.1016/j.polymer.2017.07.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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107
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Effect of the different architectures and molecular weights on stereocomplex in enantiomeric polylactides-b-MPEG block copolymers. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.07.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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108
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Widhianto YW, Yamamoto M, Masutani K, Kimura Y, Yamane H. Thermal properties of the multi-stereo block poly(lactic acid)s with various block lengths. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.06.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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109
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Yuen AY, Lopez-Martinez E, Gomez-Bengoa E, Cortajarena AL, Aguirresarobe RH, Bossion A, Mecerreyes D, Hedrick JL, Yang YY, Sardon H. Preparation of Biodegradable Cationic Polycarbonates and Hydrogels through the Direct Polymerization of Quaternized Cyclic Carbonates. ACS Biomater Sci Eng 2017; 3:1567-1575. [DOI: 10.1021/acsbiomaterials.7b00335] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Alexander Y. Yuen
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avenida
Tolosa 72, 20018 Donostia-San Sebastian, Spain
| | - Elena Lopez-Martinez
- CIC
BiomaGUNE, Parque Tecnológico de San Sebastián, Paseo Miramón 182, Donostia-San Sebastián 20014, Spain
| | - Enrique Gomez-Bengoa
- Departamento
de Química Orgánica I, Facultad de Química, Universidad del País Vasco, 48940 Lejona, Spain
| | - Aitziber L. Cortajarena
- CIC
BiomaGUNE, Parque Tecnológico de San Sebastián, Paseo Miramón 182, Donostia-San Sebastián 20014, Spain
- Ikerbasque, Basque Foundation for Science, E-48011 Bilbao, Spain
| | - Robert H. Aguirresarobe
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avenida
Tolosa 72, 20018 Donostia-San Sebastian, Spain
| | - Amaury Bossion
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avenida
Tolosa 72, 20018 Donostia-San Sebastian, Spain
- University of Bordeaux, 351 Cours
de la Liberation, 33400 Talence, France
| | - David Mecerreyes
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avenida
Tolosa 72, 20018 Donostia-San Sebastian, Spain
- Ikerbasque, Basque Foundation for Science, E-48011 Bilbao, Spain
| | - James L. Hedrick
- IBM Almaden Research Center, 650
Harry Road, San Jose, California 95120, United States
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669, Singapore
| | - Haritz Sardon
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avenida
Tolosa 72, 20018 Donostia-San Sebastian, Spain
- Ikerbasque, Basque Foundation for Science, E-48011 Bilbao, Spain
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110
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Group 4 Metal Complexes of Phenylene-Salalen Ligands in rac
-Lactide Polymerization Giving High Molecular Weight Stereoblock Poly(lactic acid). Chemistry 2017; 23:11540-11548. [DOI: 10.1002/chem.201701007] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Indexed: 01/19/2023]
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111
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Stability of adhesive interfaces by stereocomplex formation of polylactides and hybridization with nanoparticles. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.05.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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112
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Nakayama Y, Matsubara N, Cai Z, Shiono T, Inumaru K, Shirahama H. Effect of end-group modification of poly(lactide)s by cinnamoyl chloride on their thermal stability. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.05.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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113
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Bhattacharjee J, Harinath A, Nayek HP, Sarkar A, Panda TK. Highly Active and Iso-Selective Catalysts for the Ring-Opening Polymerization of Cyclic Esters using Group 2 Metal Initiators. Chemistry 2017; 23:9319-9331. [DOI: 10.1002/chem.201700672] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Jayeeta Bhattacharjee
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi 502 285, Sangareddy, Telangana India
| | - Adimulam Harinath
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi 502 285, Sangareddy, Telangana India
| | - Hari Pada Nayek
- Department of Applied Chemistry; Indian Institute of Technology (ISM), Dhanbad; 826004 Jharkhand India
| | - Alok Sarkar
- Momentive Performance Materials Pvt. Ltd. Survey No. 09; Hosur Road Electronic City (West) Bangalore 560100 India
| | - Tarun K. Panda
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi 502 285, Sangareddy, Telangana India
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114
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Li W, Wu X, Chen X, Fan Z. The origin of memory effect in stereocomplex poly (lactic acid) crystallization from melt state. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.02.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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115
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Tsuji H, Noda S, Kimura T, Sobue T, Arakawa Y. Configurational Molecular Glue: One Optically Active Polymer Attracts Two Oppositely Configured Optically Active Polymers. Sci Rep 2017; 7:45170. [PMID: 28338051 PMCID: PMC5364539 DOI: 10.1038/srep45170] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 02/20/2017] [Indexed: 01/22/2023] Open
Abstract
D-configured poly(D-lactic acid) (D-PLA) and poly(D-2-hydroxy-3-methylbutanoic acid) (D-P2H3MB) crystallized separately into their homo-crystallites when crystallized by precipitation or solvent evaporation, whereas incorporation of L-configured poly(L-2-hydroxybutanoic acid) (L-P2HB) in D-configured D-PLA and D-P2H3MB induced co-crystallization or ternary stereocomplex formation between D-configured D-PLA and D-P2H3MB and L-configured L-P2HB. However, incorporation of D-configured poly(D-2-hydroxybutanoic acid) (D-P2HB) in D-configured D-PLA and D-P2H3MB did not cause co-crystallization between D-configured D-PLA and D-P2H3MB and D-configured D-P2HB but separate crystallization of each polymer occurred. These findings strongly suggest that an optically active polymer (L-configured or D-configured polymer) like unsubstituted or substituted optically active poly(lactic acid)s can act as "a configurational or helical molecular glue" for two oppositely configured optically active polymers (two D-configured polymers or two L-configured polymers) to allow their co-crystallization. The increased degree of freedom in polymer combination is expected to assist to pave the way for designing polymeric composites having a wide variety of physical properties, biodegradation rate and behavior in the case of biodegradable polymers.
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Affiliation(s)
- Hideto Tsuji
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Soma Noda
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Takayuki Kimura
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Tadashi Sobue
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Yuki Arakawa
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
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116
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Crystal Polymorphism and Morphology of Polylactides. SYNTHESIS, STRUCTURE AND PROPERTIES OF POLY(LACTIC ACID) 2017. [DOI: 10.1007/12_2016_15] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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117
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Specklin D, Fliedel C, Hild F, Mameri S, Karmazin L, Bailly C, Dagorne S. Mononuclear salen-gallium complexes for iso-selective ring-opening polymerization (ROP) of rac-lactide. Dalton Trans 2017; 46:12824-12834. [DOI: 10.1039/c7dt02730c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mononuclear salen-supported Ga amido and alkoxide complexes, structurally characterized herein, mediate the controlled and iso-selective polymerization ofrac-lactide.
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Affiliation(s)
- David Specklin
- Institut de Chimie de Strasbourg
- CNRS-Université de Strasbourg
- UMR 7177
- F-67000 Strasbourg
- France
| | - Christophe Fliedel
- Institut de Chimie de Strasbourg
- CNRS-Université de Strasbourg
- UMR 7177
- F-67000 Strasbourg
- France
| | - Frédéric Hild
- Institut de Chimie de Strasbourg
- CNRS-Université de Strasbourg
- UMR 7177
- F-67000 Strasbourg
- France
| | - Samir Mameri
- Institut de Chimie de Strasbourg
- CNRS-Université de Strasbourg
- UMR 7177
- F-67000 Strasbourg
- France
| | - Lydia Karmazin
- Service de Radiocristallographie
- CNRS-Université de Strasbourg
- UMR 7177
- F-67000 Strasbourg
- France
| | - Corinne Bailly
- Service de Radiocristallographie
- CNRS-Université de Strasbourg
- UMR 7177
- F-67000 Strasbourg
- France
| | - Samuel Dagorne
- Institut de Chimie de Strasbourg
- CNRS-Université de Strasbourg
- UMR 7177
- F-67000 Strasbourg
- France
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118
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Ouyang H, Nie K, Yuan D, Yao Y. Synthesis of amine-bridged bis(phenolate) rare-earth metal aryloxides and their catalytic performances for the ring-opening polymerization of l-lactic acid O-carboxyanhydride and l-lactide. Dalton Trans 2017; 46:15928-15938. [PMID: 29119172 DOI: 10.1039/c7dt03001k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Rare-earth metal aryloxides were found as efficient initiators for the ring-opening polymerization of l-lactic acid O-carboxyanhydride and l-lactide. A comparative study on catalyst activities and reaction kinetics were conducted.
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Affiliation(s)
- Hao Ouyang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- and State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Kun Nie
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- and State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Dan Yuan
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- and State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Yingming Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- and State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
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119
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Cui Y, Chen C, Sun Y, Wu J, Pan X. Isoselective mechanism of the ring-opening polymerization of rac-lactide catalyzed by chiral potassium binolates. Inorg Chem Front 2017. [DOI: 10.1039/c6qi00449k] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A chain end control mechanism for the isoselective ring-opening polymerization of rac-lactide catalyzed by potassium complexes was proven via three different methods.
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Affiliation(s)
- Yaqin Cui
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou University
- Lanzhou 730000
| | - Changjuan Chen
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou University
- Lanzhou 730000
| | - Yangyang Sun
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou University
- Lanzhou 730000
| | - Jincai Wu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou University
- Lanzhou 730000
| | - Xiaobo Pan
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou University
- Lanzhou 730000
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120
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Wang B, Zhao H, Wang L, Sun J, Zhang Y, Cao Z. Immortal ring-opening polymerization of lactides with super high monomer to catalyst ratios initiated by zirconium and titanium complexes containing multidentate amino-bis(phenolate) ligands. NEW J CHEM 2017. [DOI: 10.1039/c7nj00483d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zirconium and titanium complexes containing amino-bis(phenolate) ligands were prepared. These complexes are highly active initiators for the ring-opening polymerization of lactide. And two zirconium complexes are highly active and excellent catalysts for immortal ring-opening polymerization of lactide.
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Affiliation(s)
- Baolong Wang
- School of Chemical Engineering
- Institute of Coal Conversion and Cyclic Economy
- Inner Mongolia University of Technology
- Hohhot
- China
| | - Huanqin Zhao
- School of Chemical Engineering
- Institute of Coal Conversion and Cyclic Economy
- Inner Mongolia University of Technology
- Hohhot
- China
| | - Liying Wang
- School of Chemical Engineering
- Institute of Coal Conversion and Cyclic Economy
- Inner Mongolia University of Technology
- Hohhot
- China
| | - Junmin Sun
- School of Chemical Engineering
- Institute of Coal Conversion and Cyclic Economy
- Inner Mongolia University of Technology
- Hohhot
- China
| | - Yongfeng Zhang
- School of Chemical Engineering
- Institute of Coal Conversion and Cyclic Economy
- Inner Mongolia University of Technology
- Hohhot
- China
| | - Zhenzhu Cao
- School of Chemical Engineering
- Institute of Coal Conversion and Cyclic Economy
- Inner Mongolia University of Technology
- Hohhot
- China
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121
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Shibita A, Mizumura Y, Shibata M. Stereocomplex crystallization behavior and physical properties of polyesterurethane networks incorporating diglycerol-based enantiomeric 4-armed lactide oligomers and a 1,3-propanediol-based 2-armed rac-lactide oligomer. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1890-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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122
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Murariu M, Dubois P. PLA composites: From production to properties. Adv Drug Deliv Rev 2016; 107:17-46. [PMID: 27085468 DOI: 10.1016/j.addr.2016.04.003] [Citation(s) in RCA: 349] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 03/22/2016] [Accepted: 04/04/2016] [Indexed: 01/15/2023]
Abstract
Poly(lactic acid) or polylactide (PLA), a biodegradable polyester produced from renewable resources, is used for various applications (biomedical, packaging, textile fibers and technical items). Due to its inherent properties, PLA has a key-position in the market of biopolymers, being one of the most promising candidates for further developments. Unfortunately, PLA suffers from some shortcomings, whereas for the different applications specific end-use properties are required. Therefore, the addition of reinforcing fibers, micro- and/or nanofillers, and selected additives within PLA matrix is considered as a powerful method for obtaining specific end-use characteristics and major improvements of properties. This review highlights recent developments, current results and trends in the field of composites based on PLA. It presents the main advances in PLA properties and reports selected results in relation to the preparation and characterization of the most representative PLA composites. To illustrate the possibility to design the properties of composites, a section is devoted to the production and characterization of innovative PLA-based products filled with thermally-treated calcium sulfate, a by-product from the lactic acid production process. Moreover, are emphasized the last tendencies strongly evidenced in the case of PLA, i.e., the high interest to diversify its uses by moving from biomedical and packaging (biodegradation properties, "disposables") to technical applications ("durables").
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Affiliation(s)
- Marius Murariu
- Center of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials (LPCM), University of Mons & Materia Nova Research Centre, Place du Parc 20, 7000 Mons, Belgium.
| | - Philippe Dubois
- Center of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials (LPCM), University of Mons & Materia Nova Research Centre, Place du Parc 20, 7000 Mons, Belgium.
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123
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Abstract
Upon blending enantiomeric poly(l-lactide) [i.e., poly(l-lactic acid) (PLLA)] and poly(d-lactide) (PDLA) [i.e., poly(d-lactic acid) (PDLA)] or synthesis of stereo block poly(lactide) [i.e., poly(lactic acid) (PLA)], a stereocomplex (SC) is formed. PLA SC has a higher melting temperature (or heat resistance), mechanical performance, and hydrolysis-resistance compared to those of neat PLLA and PDLA. Because of such effects, PLA SC has been extensively studied in terms of biomedical and pharmaceutical applications as well as commodity, industrial, and environmental applications. Stereocomplexation stabilizes and strengthens PLA-based hydrogel or nanoparticles for biomedical applications. Stereocomplexation increases the barrier property of PLA-based materials and thereby prolongs drug release from PLA based materials. In addition, PLA SC is attracting significant attention because it can act as a nucleating agent for the widely used biobased polymer PLLA and thereby the heat resistance of PLLA-based materials can be enhanced. Interestingly, a wide variety of SCs other than PLA SC are found to have been formed in the enantiomeric substituted PLA blends and stereo block substituted PLA polymers. In the present review article, a decade of progress in investigation of PLA SCs is summarized.
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Affiliation(s)
- Hideto Tsuji
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan.
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124
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Kan K, Akashi M, Ajiro H. Polylactides Bearing Vanillin at Chain End Provided Dual Dynamic Interactions: Stereocomplex Formation and Nanostructure Control. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600395] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kai Kan
- Graduate School of Materials Science; Nara Institute of Science and Technology; 8916-5 Takayama-cho Ikoma Nara 630-0192
- Institute for Research Initiatives; Division for Research Strategy; Nara Institute of Science and Technology; 8916-5, Takayama-cho Ikoma Nara 630-0192 Japan
| | - Mitsuru Akashi
- Graduate School of Frontier Biosciences; Osaka University; 2-1 Yamada-oka Suita 565-0871 Japan
| | - Hiroharu Ajiro
- Graduate School of Materials Science; Nara Institute of Science and Technology; 8916-5 Takayama-cho Ikoma Nara 630-0192
- Institute for Research Initiatives; Division for Research Strategy; Nara Institute of Science and Technology; 8916-5, Takayama-cho Ikoma Nara 630-0192 Japan
- JST PRESTO; 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
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125
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Li Z, Tan BH, Lin T, He C. Recent advances in stereocomplexation of enantiomeric PLA-based copolymers and applications. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2016.05.003] [Citation(s) in RCA: 190] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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126
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Zhang ZC, Gao XR, Hu ZJ, Yan Z, Xu JZ, Xu L, Zhong GJ, Li ZM. Inducing Stereocomplex Crystals by Template Effect of Residual Stereocomplex Crystals during Thermal Annealing of Injection-Molded Polylactide. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02169] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zheng-Chi Zhang
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xin-Rui Gao
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Zhong-Jie Hu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Zheng Yan
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jia-Zhuang Xu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Ling Xu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Gan-Ji Zhong
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Zhong-Ming Li
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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127
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Tsuji H, Hayakawa T. Heterostereocomplex- and Homocrystallization and Thermal Properties and Degradation of Substituted Poly(lactic acid)s, Poly(l-2-hydroxybutanoic acid) and Poly(d-2-hydroxy-3-methylbutanoic acid). MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600359] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hideto Tsuji
- Department of Environmental and Life Sciences; Graduate School of Engineering; Toyohashi University of Technology; Tempaku-cho Toyohashi, Aichi 441-8580 Japan
| | - Tomohiro Hayakawa
- Department of Environmental and Life Sciences; Graduate School of Engineering; Toyohashi University of Technology; Tempaku-cho Toyohashi, Aichi 441-8580 Japan
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128
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Role of carbon nanotube grafted poly(l-lactide)-block-poly(d-lactide) in the crystallization of poly(l-lactic acid)/poly(d-lactic acid) blends: Suppressed homocrystallization and enhanced stereocomplex crystallization. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.08.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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129
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Henmi K, Sato H, Matsuba G, Tsuji H, Nishida K, Kanaya T, Toyohara K, Oda A, Endou K. Isothermal Crystallization Process of Poly(l-lactic acid)/Poly(d-lactic acid) Blends after Rapid Cooling from the Melt. ACS OMEGA 2016; 1:476-482. [PMID: 31457140 PMCID: PMC6640745 DOI: 10.1021/acsomega.6b00098] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Accepted: 09/09/2016] [Indexed: 06/10/2023]
Abstract
We observed the crystallization process in poly(l-lactic acid) (PLLA) and poly(d-lactic acid) (PDLA) blends using in situ simultaneous small- and wide-angle X-ray scattering measurements with a high-speed temperature control cell. In situ X-ray scattering measurements revealed that density fluctuations larger than the long spacing periods grew during crystallization above 130 °C. In particular, the time evolution of the density fluctuations has a strong dependence on the crystallization temperature. The density fluctuations will promote the crystal nucleation and growth processes of the stereocomplex and increase with increasing crystallization temperature, which is strongly correlated with the complexation of PLLA and PDLA chains. On the other hand, below 120 °C, the kinetics of stereocomplex formation might be hindered by the decreased mobility, and no density fluctuations were observed in the case of homo crystal growth of PLLA or PDLA.
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Affiliation(s)
- Kouta Henmi
- Department
of Polymer Science and Engineering, Yamagata
University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Hiroaki Sato
- Department
of Polymer Science and Engineering, Yamagata
University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Go Matsuba
- Department
of Polymer Science and Engineering, Yamagata
University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Hideto Tsuji
- Department
of Environmental and Life Science, Toyohashi
University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Koji Nishida
- Institute
for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto-fu 611-0011, Japan
| | - Toshiji Kanaya
- Institute
for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto-fu 611-0011, Japan
- J-PARC,
Material and Life Science Division, Institute of Material Structure
Science, High Energy Accelerator Research
Organization (KEK), 203-1
Shirakata, Tokai, Naka, Ibaraki 319-1106, Japan
| | | | - Akimichi Oda
- Teijin
Limited, 2-1 Hinode-cho, Iwakuni, Yamaguchi 740-8511, Japan
| | - Kou Endou
- Teijin
Limited, 2-1 Hinode-cho, Iwakuni, Yamaguchi 740-8511, Japan
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130
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Ajiro H, Takahama S, Mizukami M, Kan K, Akashi M, Kurihara K. Force Estimation on the Contact of Poly(l,l-lactide) and Poly(d,d-lactide) Surfaces Regarding Stereocomplex Formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:9501-9506. [PMID: 27575700 DOI: 10.1021/acs.langmuir.6b02623] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The stereocomplex formation of poly(l,l-lactide) (PLLA) and poly(d,d-lactide) (PDLA) was selected in order to investigate the interaction of the two surfaces including hydrogen bonding and van der Waals interaction. Adhesion force measurement using surface force apparatus (SFA) equipped with an optical microscope was conducted on the PLLA and PDLA spin-coated films. The adhesion forces, Fad, phenomenologically followed the linear relation with the applied normal load, L. For the force Fad between PLLA and PDLA films with low molecular weights (PLLA, Mn = 2800; PDLA, : Mn = 2100), the slope of linear fitting of Fad vs L was significantly larger for the heterointerface (PLLA/PLDA) compared with that for the homointerface (PLLA/PLLA and PDLA/PDLA). However, when polymers with higher molecular weights (PLLA, Mn = 8500; PDLA, Mn = 8300) were measured, the slopes of linear fitting lines were almost the same for hetero- and homointerfaces. This indicated that the mobility of the lower molecular weight PLLA/PDLA films promoted the selective interaction of PLLA and PDLA under the applied normal loads. The adhesion between the outermost PLLA layer and PDLA layer prepared by layer-by-layer (LbL) assembly was also measured. It is interesting that the adhesion force was very weak in this case. This weak adhesion could be explained by the much less mobility of the polymer chain due to the stereocomplex formation within the LbL layers. This study demonstrated that the adhesion force due to the selective interaction of PLLA and PDLA between PLLA/PDLA films could be directly measured, and depended on the mobility of the outermost polymer chains, which reflected the different structures of polymer chains in the organized complex films.
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Affiliation(s)
- Hiroharu Ajiro
- JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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131
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Bednarek M, Wojtczak E, Pluta M. Spontaneous formation of polylactide stereocomplex microspheres containing metal ions. POLYM INT 2016. [DOI: 10.1002/pi.5251] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Melania Bednarek
- Centre of Molecular and Macromolecular Studies; Polish Academy of Sciences; Sienkiewicza 112 90-362 Lodz Poland
| | - Edyta Wojtczak
- Centre of Molecular and Macromolecular Studies; Polish Academy of Sciences; Sienkiewicza 112 90-362 Lodz Poland
| | - Mirosław Pluta
- Centre of Molecular and Macromolecular Studies; Polish Academy of Sciences; Sienkiewicza 112 90-362 Lodz Poland
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132
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Fukushima K. Biodegradable functional biomaterials exploiting substituted trimethylene carbonates and organocatalytic transesterification. Polym J 2016. [DOI: 10.1038/pj.2016.80] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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133
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Lanthanide alkoxide complexes stabilized by a novel salen-type Schiff-base ligand: Synthesis, structure, and catalysis for the polymerization of lactide. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.06.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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134
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135
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Kan C, Ge J, Ma H. Aluminum methyl, alkoxide and α-alkoxy ester complexes supported by 6,6'-dimethylbiphenyl-bridged salen ligands: synthesis, characterization and catalysis for rac-lactide polymerization. Dalton Trans 2016; 45:6682-95. [PMID: 26974122 DOI: 10.1039/c5dt04633e] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The synthesis and characterization of aluminum alkyl and alkoxide complexes bearing racemic 6,6'-dimethylbiphenyl-bridged salen-type ligands, and their catalysis in the ring-opening polymerization (ROP) of rac-lactide are reported. Reactions of AlMe3 with various amounts of the proligands (6,6'-[(6,6'-dimethyl-[1,1'-biphenyl]-2,2'-diyl)bis(nitrylomethilidyne)]-bis(2-R(1)-4-R(2)-phenol): , R(1) = R(2) = Me; , R(1) = (t)Bu, R(2) = Me; , R(1) = R(2) = cumyl; , R(1) = Br, R(2) = (t)Bu) afforded the corresponding mono- and dinuclear aluminum methyl complexes [AlMe (), Al2Me4 ()]. Aluminum alkoxide complexes AlO(i)Pr (), AlOBn (), and α-alkoxy ester complexes Al(OCMe2CO2Me) (), Al[(S)-OCHMeCO2Me] () were prepared via in situ alcoholysis of the parent aluminum methyl complex with the corresponding alcohols. The molecular structures of mononuclear complexes , dinuclear complex , alkoxide complexes and α-alkoxy ester complexes were established by single-crystal X-ray diffraction studies. Two broad resonances at about 69-70 ppm and 25-41 ppm were observed in the (27)Al NMR spectra of complexes and , indicating the existence of both four- and five-coordinate aluminum centers in solution, which results from the dissociation of one N donor of the salen ligand, accompanied by an association and dissociation equilibrium of the carbonyl group of the α-alkoxy ester ligand to the aluminum center. Complex is also a rare example of an O-lactate model complex that mimics the first insertion of l-LA. All complexes were investigated for the ROP of rac-LA at 110 °C in toluene. The polymerization initiated by complexes in the presence of (i)PrOH showed living features, affording PLAs with narrow molecular weight distributions (PDIs = 1.03-1.05) and 65-73% isotacticities. Particularly, complex showed an "immortal" behavior for the polymerization of rac-LA in the presence of excess alcohol. Compared with the mononuclear counterparts, the tetra-coordinate dinuclear aluminum complexes enabled a few fold boosts in activity, but gave atactic PLAs with broadened PDIs.
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Affiliation(s)
- Chao Kan
- Shanghai Key Laboratory of Functional Materials Chemistry and Laboratory of Organometallic Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China.
| | - Jilei Ge
- Shanghai Key Laboratory of Functional Materials Chemistry and Laboratory of Organometallic Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China.
| | - Haiyan Ma
- Shanghai Key Laboratory of Functional Materials Chemistry and Laboratory of Organometallic Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China.
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136
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Pan P, Bao J, Han L, Xie Q, Shan G, Bao Y. Stereocomplexation of high-molecular-weight enantiomeric poly(lactic acid)s enhanced by miscible polymer blending with hydrogen bond interactions. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.06.014] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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137
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Shibita A, Kawasaki S, Shimasaki T, Teramoto N, Shibata M. Stereocomplexation in Copolymer Networks Incorporating Enantiomeric Glycerol-Based 3-Armed Lactide Oligomers and a 2-Armed ɛ-Caprolactone Oligomer. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E591. [PMID: 28773712 PMCID: PMC5456934 DOI: 10.3390/ma9070591] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/06/2016] [Accepted: 07/12/2016] [Indexed: 12/05/2022]
Abstract
The reactions of enantiomeric glycerol-based 3-armed lactide oligomers (H3DLAO and H3LLAO) and a diethylene glycol-based 2-armed ɛ-caprolactone oligomer (H2CLO) with hexamethylene diisocyanate (HDI) produced polyesterurethane copolymer networks (PEU-3scLAO/2CLOs 100/0, 75/25, 50/50, 25/75 and 0/100) with different feed ratios of stereocomplex (sc) lactide oligomer (H3scLAO = H3DLAO + H3LLAO, H3DLAO/H3LLAO = 1/1) and H2CLO. Thermal and mechanical properties of the copolymer networks were compared with those of a simple homochiral (hc) network (PEU-3DLAO) produced by the reaction of H3DLAO and HDI. X-ray diffraction and differential scanning calorimetric analyses revealed that sc crystallites are formed without any hc crystallization for PEU-3scLAO/2CLOs, and that PEU-3DLAO is amorphous. The melting temperatures of sc crystallites for PEU-3scLAO/2CLOs were much higher than that of hc crystallites of H3DLAO. The polarized optical microscopic analysis revealed that the nucleation efficiency is enhanced with increasing feed of H3scLAO fraction, whereas the spherulite growth rate is accelerated with increasing feed H2CLO fraction over 100/0-50/50 networks. PEU-3scLAO/2CLO 100/0 (i.e., PEU-3scLAO) exhibited a higher tensile strength and modulus than PEU-3DLAO. The elongation at break and tensile toughness for PEU-3scLAO/2CLOs increased with an increasing feed amount of H2CLO.
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Affiliation(s)
- Ayaka Shibita
- Department of Life and Environmental Sciences, Faculty of Engineering, Chiba Institute of Technology, 2-17-1, Tsudanuma, Narashino, Chiba 275-0016, Japan.
| | - Seina Kawasaki
- Department of Life and Environmental Sciences, Faculty of Engineering, Chiba Institute of Technology, 2-17-1, Tsudanuma, Narashino, Chiba 275-0016, Japan.
| | - Toshiaki Shimasaki
- Department of Life and Environmental Sciences, Faculty of Engineering, Chiba Institute of Technology, 2-17-1, Tsudanuma, Narashino, Chiba 275-0016, Japan.
| | - Naozumi Teramoto
- Department of Life and Environmental Sciences, Faculty of Engineering, Chiba Institute of Technology, 2-17-1, Tsudanuma, Narashino, Chiba 275-0016, Japan.
| | - Mitsuhiro Shibata
- Department of Life and Environmental Sciences, Faculty of Engineering, Chiba Institute of Technology, 2-17-1, Tsudanuma, Narashino, Chiba 275-0016, Japan.
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138
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Rosen T, Popowski Y, Goldberg I, Kol M. Zinc Complexes of Sequential Tetradentate Monoanionic Ligands in the Isoselective Polymerization of rac
-Lactide. Chemistry 2016; 22:11533-6. [DOI: 10.1002/chem.201601979] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Tomer Rosen
- School of Chemistry; Tel Aviv University; Ramat Aviv Tel Aviv 69978 Israel
| | - Yanay Popowski
- School of Chemistry; Tel Aviv University; Ramat Aviv Tel Aviv 69978 Israel
| | - Israel Goldberg
- School of Chemistry; Tel Aviv University; Ramat Aviv Tel Aviv 69978 Israel
| | - Moshe Kol
- School of Chemistry; Tel Aviv University; Ramat Aviv Tel Aviv 69978 Israel
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139
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Tsuji H, Tamai K, Kimura T, Kubota A, Tahahashi A, Kuzuya A, Ohya Y. Stereocomplex- and homo-crystallization of blends from 2-armed poly(l-lactide) and poly(d-lactide) with identical and opposite chain directional architectures and of 2-armed stereo diblock poly(lactide). POLYMER 2016. [DOI: 10.1016/j.polymer.2016.04.049] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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140
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Masutani K, Kimura Y. Macromolecular design of specialty polylactides by means of controlled copolymerization and stereocomplexation. POLYM INT 2016. [DOI: 10.1002/pi.5172] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Kazunari Masutani
- Center for Fiber and Textile Science; Kyoto Institute of Technology; Hashigami-cho, Matsugasaki Sakyo-ku Kyoto 606-8585 Japan
| | - Yoshiharu Kimura
- Center for Fiber and Textile Science; Kyoto Institute of Technology; Hashigami-cho, Matsugasaki Sakyo-ku Kyoto 606-8585 Japan
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141
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Gurunathan T, Nayak SK. The influence of reactive organoclay on a biorenewable castor oil-based polyurethane prepolymers toughened polylactide nanocomposites. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3818] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- T. Gurunathan
- ARSTPS, Central Institute of Plastics Engineering and Technology; Guindy Chennai 600032 India
| | - Sanjay K. Nayak
- ARSTPS, Central Institute of Plastics Engineering and Technology; Guindy Chennai 600032 India
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142
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Tsuji H, Matsumura N. Stereocomplex Crystallization of Star-Shaped 4-Armed Equimolar Stereo Diblock Poly(lactide)s with Different Molecular Weights: Isothermal Crystallization from the Melt. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600042] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hideto Tsuji
- Department of Environmental and Life Sciences; Graduate School of Engineering; Toyohashi University of Technology; Tempaku-cho, Toyohashi Aichi 441-8580 Japan
| | - Nobutsugu Matsumura
- Department of Environmental and Life Sciences; Graduate School of Engineering; Toyohashi University of Technology; Tempaku-cho, Toyohashi Aichi 441-8580 Japan
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143
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Synthesis of poly(lactic acid) by heterogeneous acid catalysis from d,l-lactic acid. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-0976-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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144
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Michalski A, Makowski T, Biedroń T, Brzeziński M, Biela T. Controlling polylactide stereocomplex (sc-PLA) self-assembly: From microspheres to nanoparticles. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.03.049] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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145
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Socka M, Duda A, Adamus A, Wach RA, Ulanski P. Lactide/trimethylene carbonate triblock copolymers: Controlled sequential polymerization and properties. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.01.059] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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146
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Tsuji H, Matsumura N, Arakawa Y. Stereocomplex Crystallization and Homocrystallization of Star-Shaped Four-Armed Stereo Diblock Poly(lactide)s with Different l-Lactyl Unit Contents: Isothermal Crystallization from the Melt. J Phys Chem B 2016; 120:1183-93. [DOI: 10.1021/acs.jpcb.5b11813] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hideto Tsuji
- Department of Environmental
and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Nobutsugu Matsumura
- Department of Environmental
and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Yuki Arakawa
- Department of Environmental
and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
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147
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Li Z, Yuan D, Jin G, Tan BH, He C. Facile Layer-by-Layer Self-Assembly toward Enantiomeric Poly(lactide) Stereocomplex Coated Magnetite Nanocarrier for Highly Tunable Drug Deliveries. ACS APPLIED MATERIALS & INTERFACES 2016; 8:1842-53. [PMID: 26717323 DOI: 10.1021/acsami.5b09822] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
A highly tunable nanoparticle (NP) system with multifunctionalities was developed as drug nanocarrier via a facile layer-by-layer (LbL) stereocomplex (SC) self-assembly of enantiomeric poly(l-lactic acid) (PLLA) and poly(d-lactic acid) (PDLA) in solution using silica-coated magnetite (Fe3O4@SiO2) as template. The poly(lactide) (PLA) SC coated NPs (Fe3O4@SiO2@-SC) were further endowed with different stimuli-responsiveness by controlling the outermost layer coatings with respective pH-sensitive poly(lactic acid)-poly(2-dimethylaminoethyl methacrylate) (PLA-D) and temperature-sensitive poly(lactic acid)-poly(N-isopropylacrylamide) (PLA-N) diblock copolymers to yield Fe3O4@SiO2@SC-D and Fe3O4@SiO2@SC-N NPs, respectively, while the superparamagnetic properties of Fe3O4 were maintained. TEM images show a clearly resolved core-shell structure with a silica layer and sequential PLA SC co/polymer coating layers in the respective NPs. The well-designed NPs possess a size distribution in a range of 220-270 nm and high magnetization of 70.8-72.1 emu/g [Fe3O4]. More importantly, a drug release study from the as-constructed stimuli-responsive NPs exhibited sustained release profiles and the rates of release can be tuned by variation of external environments. Further cytotoxicity and cell culture studies revealed that PLA SC coated NPs possessed good cell biocompatibility and the doxorubicin (DOX)-loaded NPs showed enhanced drug delivery efficiency toward MCF-7 cancer cells. Together with the strong magnetic sensitivity, the developed hybrid NPs demonstrate a great potential of control over the drug release at a targeted site. The developed coating method can be further optimized to finely tune the nanocarrier size and operating range of pHs and temperatures for in vivo applications.
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Affiliation(s)
- Zibiao Li
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore
| | - Du Yuan
- Department of Materials Science and Engineering, National University of Singapore , Singapore 117574, Singapore
| | - Guorui Jin
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore
| | - Beng H Tan
- Department of Materials Science and Engineering, National University of Singapore , Singapore 117574, Singapore
| | - Chaobin He
- Department of Materials Science and Engineering, National University of Singapore , Singapore 117574, Singapore
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore
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148
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Gug J, Sobkowicz MJ. Improvement of the mechanical behavior of bioplastic poly(lactic acid)/polyamide blends by reactive compatibilization. J Appl Polym Sci 2016. [DOI: 10.1002/app.43350] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- JeongIn Gug
- Department of Plastics Engineering; University of Massachusetts Lowell; Lowell Massachusetts 01854
| | - Margaret J. Sobkowicz
- Department of Plastics Engineering; University of Massachusetts Lowell; Lowell Massachusetts 01854
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149
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Ajiro H, Ito S, Kan K, Akashi M. Catechin-Modified Polylactide Stereocomplex at Chain End Improved Antibiobacterial Property. Macromol Biosci 2016; 16:694-704. [PMID: 26789009 DOI: 10.1002/mabi.201500398] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 11/18/2015] [Indexed: 12/31/2022]
Abstract
Using different type of initiators, the antibacterial moieties are introduced at the chain end of poly(L,L-lactide) (PLLA) and poly(D,D-lactide) (PDLA), and the thermal properties are simultaneously improved using the stereocomplex approach. The physical interaction of polymers and antibacterial compounds is investigated. The double bonds at the chain end are utilized for the interaction of silver ion; however, the silver ions are not detected after stereocomplexation of PLLA and PDLA. On the other hand, catechin (CT) is selected as an initiator precursor of lactide polymerization, protecting the phenolic hydroxyl groups. The linear PLLA and PDLA are obtained by the initiator, resulting in CT conjugated PLAs at the chain end groups after deprotection of phenolic hydroxyl groups. The antibacterial properties are determined by proliferation tests of staphylococcus aureus. The results suggest that the antibacterial properties of CT modified PLAs are derived from the original CT parts.
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Affiliation(s)
- Hiroharu Ajiro
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.,Institute for Research Initiatives, Division for Research Strategy, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.,JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan.,Department of Applied Chemistry, Osaka University, 2-1, Yamada-oka, Suita, 565-0871, Japan.,The Center for Advanced Medical Engineering and Informatics, Osaka University, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Shogo Ito
- Department of Applied Chemistry, Osaka University, 2-1, Yamada-oka, Suita, 565-0871, Japan
| | - Kai Kan
- Institute for Research Initiatives, Division for Research Strategy, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara, 630-0192, Japan
| | - Mitsuru Akashi
- Department of Applied Chemistry, Osaka University, 2-1, Yamada-oka, Suita, 565-0871, Japan.,The Center for Advanced Medical Engineering and Informatics, Osaka University, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan.,Graduate School of Frontier Biosciences, Osaka University, 2-1 Yamada-oka, Suita, 565-0871, Japan
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150
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Tsuji H. WITHDRAWN: PLA Stereocomplexes: A Decade of Progress. Adv Drug Deliv Rev 2016:S0169-409X(16)30009-6. [PMID: 26785171 DOI: 10.1016/j.addr.2015.12.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 12/31/2015] [Indexed: 12/16/2022]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
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Affiliation(s)
- Hideto Tsuji
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan.
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