1
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Ganta PK, Teja MR, Chang CJ, Sambandam A, Kamaraj R, Chu YT, Ding S, Chen HY, Chen HY. Improvement of catalytic activity of aluminum complexes for the ring-opening polymerization of ε-caprolactone: aluminum thioamidate and thioureidate systems. Dalton Trans 2023; 52:17132-17147. [PMID: 37929915 DOI: 10.1039/d3dt03198e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
In this study, a series of Al complexes bearing amidates, thioamidates, ureidates, and thioureidates were synthesized and their catalytic activity for ε-caprolactone (CL) polymerization was evaluated. SPr-Al exhibited a higher catalytic activity than OPr-Al (3.2 times as high for CL polymerization; [CL] : [SPr-Al] : [BnOH] = 100 : 0.5 : 2; [SPr-Al] = 10 mM, conv. = 93% after 14 min at 25 °C), and USCl-Al exhibited a higher catalytic activity than UCl-Al (4.6 times as high for CL polymerization; [CL] : [USCl-Al] : [BnOH] = 100 : 0.5 : 2; [USCl-Al] = 10 mM, conv. = 90% after 15 min at 25 °C). Regardless of whether aluminum amidates or ureidates were present, thioligands improved the polymerization rate of aluminum catalysts. Density functional theory calculations revealed that the eight-membered ring [SPr-AlOMe2]2 decomposed into the four-membered ring SPr-AlOMe2. However, [OPr-AlOMe2]2 did not decompose because of its strong bridging Al-O bond. The overall activation energy required for CL polymerization was lower when using [SPr-AlOMe2]2 (18.1 kcal mol-1) as a catalyst than when using [OPr-AlOMe2]2 (23.9 kcal mol-1). This is because the TS2a transition state of SPr-AlOMe2 had a more open coordination geometry with a small N-Al-S angle (72.91°) than did TS3c of [OPr-AlOMe2]2, the crowded highest-energy transition state of [OPr-AlOMe2]2 with a larger N-Al-O angle (99.63°).
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Affiliation(s)
- Prasanna Kumar Ganta
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan, 80708, Republic of China.
| | - Mallemadugula Ravi Teja
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan, 80708, Republic of China.
| | - Chun-Juei Chang
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan, 80708, Republic of China.
- Department of International Ph.D. Program for Science, National Sun Yat-sen University, Kaohsiung, Taiwan 80424, Republic of China
| | - Anandan Sambandam
- Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Tiruchirappalli, 620015, India
| | - Rajiv Kamaraj
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan, 80708, Republic of China.
| | - Yu-Ting Chu
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan, 80708, Republic of China.
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan, 80424, Republic of China
| | - Shangwu Ding
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan, 80708, Republic of China.
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan, 80424, Republic of China
| | - Hsing-Yin Chen
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan, 80708, Republic of China.
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan, 80708, Republic of China.
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan, 80424, Republic of China
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan, Republic of China
- National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
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2
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Su RR, Ganta PK, Cheng CA, Hu YT, Chang YC, Chang CJ, Ding S, Chen HY, Wu KH. Ring-opening polymerization of ε-caprolactone and L-lactide using ethyl salicylate-bearing zinc complexes as catalysts. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.112965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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3
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Rosa RP, Ferreira FV, dos Santos DM, Lona LM. Cellulose nanocrystals as initiator of ring-opening polymerization of ε-caprolactone: Mathematical modeling and experimental verification. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Kricheldorf HR, Weidner SM, Scheliga F. SnOct
2
‐Catalyzed and Alcohol‐Initiated ROPS of L‐Lactide – Control of the Molecular Weight and the Role of Cyclization. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202100464] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hans R. Kricheldorf
- Universität Hamburg Institut für Technische und Makromolekulare Chemie Bundesstr. 45 Hamburg D‐20146 Germany
| | - Steffen M. Weidner
- BAM – Bundesanstalt für Materialforschung und ‐prüfung Richard‐Willstätter‐Str. 11 Berlin D‐12489 Germany
| | - Felix Scheliga
- Universität Hamburg Institut für Technische und Makromolekulare Chemie Bundesstr. 45 Hamburg D‐20146 Germany
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5
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Abstract
Reaction mechanisms and synthetic methods used for the preparation of homo- and copolylactides based on tin(ii) and tin(iv) catalysts are reviewed.
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Affiliation(s)
- Hans R. Kricheldorf
- Universität Hamburg, Institut für Technische und Makromolekulare Chemie, Bundesstr. 45, D-20146 Hamburg, Germany
| | - Steffen M. Weidner
- Bundesanstalt für Materialforschung und -prüfung – BAM, Richard Willstätter Str. 11, D-12489 Berlin, Germany
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6
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Yoo J, Viswanath D, Won YY. Strategy for Synthesis of Statistically Sequence-Controlled Uniform PLGA and Effects of Sequence Distribution on Interaction and Drug Release Properties. ACS Macro Lett 2021; 10:1510-1516. [PMID: 35549141 DOI: 10.1021/acsmacrolett.1c00637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Extensive studies have been conducted to elucidate the effects of such parameters as molecular weight, polydispersity, and composition on the controlled release properties of poly(d,l-lactic-co-glycolic acid) (PLGA). However, studies dealing with the effect of monomer sequence distribution have been sparse mainly because of the difficulty of precisely controlling the monomer sequence in PLGA. Herein, we present a semibatch copolymerization strategy that enables the production of statistically sequence-controlled "uniform PLGA" polymers through control of the rate of comonomer addition. Using this method, a series of PEG-PLGA samples having a comparable molecular weight and composition but different sequence distributions (uniform vs gradient) were prepared. The properties of these materials (PEG crystallization/melting, hygroscopicity, aqueous sol-gel transition, drug release kinetics) were found to significantly vary, demonstrating that sequence control only at the statistical level still significantly influences the properties of PLGA. Most notably, uniform PLGA exhibited the more sustained drug release behavior compared to gradient PLGA.
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Affiliation(s)
- Jin Yoo
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States of America
| | - Dhushyanth Viswanath
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States of America
| | - You-Yeon Won
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States of America
- Purdue University Center for Cancer Research, Purdue University, West Lafayette, Indiana 47906, United States of America
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7
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López‐Domínguez P, Carranco‐Hernández NM, Vivaldo‐Lima E. Kinetic Modeling of Ring Opening Polymerization of Lactones under Microwave Irradiation. MACROMOL REACT ENG 2021. [DOI: 10.1002/mren.202100044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Porfirio López‐Domínguez
- Facultad de Química, Departamento de Ingeniería Química Universidad Nacional Autónoma de México Ciudad de México 04510 México
| | | | - Eduardo Vivaldo‐Lima
- Facultad de Química, Departamento de Ingeniería Química Universidad Nacional Autónoma de México Ciudad de México 04510 México
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8
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Patil S, Yoo J, Won YY. Investigation of the Mechanisms and Kinetics of DBU-Catalyzed PLGA Copolymerization via a Full-Scale Population Balance Analysis. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03096] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Samruddhi Patil
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jin Yoo
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - You-Yeon Won
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Purdue University Center for Cancer Research, West Lafayette, Indiana 47906, United States
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9
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Casalini T, Cingolani A, Scibona E. Modeling the Microenvironment-Dependent Degradation of Drug-Loaded Polylactic- co-glycolic Microparticles. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Tommaso Casalini
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, Zurich, 8093, Switzerland
- Polymer Engineering Laboratory, Institute of Mechanical Engineering and Materials Technology, University of Applied Sciences of Southern Switzerland (SUPSI), Via la Santa 1, 6962 Lugano, Switzerland
| | - Alberto Cingolani
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, Zurich, 8093, Switzerland
| | - Ernesto Scibona
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, Zurich, 8093, Switzerland
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10
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Kosuru SR, Lai FJ, Chang YL, Li CY, Lai YC, Ding S, Wu KH, Chen HY, Lo YH. Collaboration between Trinuclear Aluminum Complexes Bearing Bipyrazoles in the Ring-Opening Polymerization of ε-Caprolactone. Inorg Chem 2021; 60:10535-10549. [PMID: 34232620 DOI: 10.1021/acs.inorgchem.1c01192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Trinuclear aluminum complexes bearing bipyrazoles were synthesized, and their catalytic activity for ε-caprolactone (CL) polymerization was investigated. DBu2Al3Me5 exhibited higher catalytic activity than did the dinuclear aluminum complex LBu2Al2Me4 (16 times as high for CL polymerization; [CL]:[DBu2Al3Me5]:[BnOH] = 100:0.5:5, [DBu2Al3Me5] = 10 mM, conversion 93% after 18 min at room temperature). Density functional theory calculations revealed a polymerization mechanism in which CL first approached the central Al atom and then moved to an external Al. The coordinated CL ring was opened because the repulsion of two tert-butyl groups on the ligands pushed an alkoxide initiator on an external Al to initiate CL. In these trinuclear Al catalysts, the central Al plays a role in monomer capture and then collaborates with the external Al to activate CL, accelerating polymerization.
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Affiliation(s)
- Someswara Rao Kosuru
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Feng-Jie Lai
- Department of Dermatology, Chi Mei Medical Center, Tainan, Taiwan, Republic of China.,Center for General Education, Southern Taiwan University of Science and Technology, Tainan, Taiwan, Republic of China
| | - Yu-Lun Chang
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Chen-Yu Li
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Yi-Chun Lai
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Shangwu Ding
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China.,Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, Republic of China
| | - Kuo-Hui Wu
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan, Republic of China
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China.,Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, Republic of China.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan, Republic of China
| | - Yung-Han Lo
- Department of Chemistry, Faculty of Science and Technology, Keio University, Minato City 108-8345, Tokyo, Japan
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11
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Weidner SM, Meyer A, Falkenhagen J, Kricheldorf HR. SnOct2-catalyzed and alcohol-initiated ROPs of L-lactide – About the influence of initiators on chemical reactions in the melt and the solid state. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110508] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Ring-opening polymerization of L-lactide by using sodium complexes bearing amide as catalysts in high polar solvent. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-020-03240-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Investigation of the influence of impurities on the ring-opening polymerisation of L-Lactide from biogenous feedstock. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02339-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
AbstractIn order to use a L-lactide monomer that is derived from fermentation processes it is necessary to understand, how the polymerisation process is influenced by impurities which derive from the production process. We have selected a group of likely contaminants and added them at various concentrations to the polymerisation of L-lactide using tin (II)-2-ethylhexanoate as catalyst and 2-methoxyethanol as initiator. The effect of impurities onto the global properties of the polymers such as glass transition temperature, melting point and molecular mass distribution were investigated and NMR and MALDI mass spectrometry were used to identify structural changes within the polymers. Thus, it could be shown that in reference experiments cyclic polymers and linear polymers with different starting groups are formed. Addition of ethanol and sodium carbonate showed the strongest influence on molecular masses as well as polymer structures, which could be elucidated by interpretation of the MALDI mass spectra and NMR data.
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14
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Wang TF, Kosuru SR, Yu SC, Chang YC, Lai HY, Chang YL, Wu KH, Ding S, Chen HY. Use of pyrazoles as ligands greatly enhances the catalytic activity of titanium iso-propoxide for the ring-opening polymerization of l-lactide: a cooperation effect. RSC Adv 2020; 10:40690-40696. [PMID: 35519227 PMCID: PMC9057761 DOI: 10.1039/d0ra07824g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 10/22/2020] [Indexed: 11/21/2022] Open
Abstract
Using TiOiPr4 with a pyrazole ligand for one-pot LA polymerization improved catalytic activity compared with using TiOiPr4 only. At 60 °C, TiOiPr4 with furPz exhibited a higher catalytic activity (approximately 3-fold) than TiOiPr4. At room temperature, TiOiPr4 with BuPz exhibited a higher catalytic activity (approximately 17-fold) than TiOiPr4. High molecular mass PLA (M nGPC = 51 100, and Đ = 1.10) could be produced by using TiOiPr4 with furPz in melt polymerization ([TiOiPr4] : [furPz] = 1000 : 1 : 1 at 100 °C, 240 min). The crystal structure of MePz2Ti2OiPr7 revealed the cooperative activation between two Ti atoms during LA polymerization.
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Affiliation(s)
- Tzu-Fang Wang
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University Kaohsiung Taiwan 80708 Republic of China +886-7-3125339 +886-7-3121101 ext. 2585
| | - Someswara Rao Kosuru
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University Kaohsiung Taiwan 80708 Republic of China +886-7-3125339 +886-7-3121101 ext. 2585
| | - Shu-Chun Yu
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University Kaohsiung Taiwan 80708 Republic of China +886-7-3125339 +886-7-3121101 ext. 2585
| | - Yung-Chi Chang
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University Kaohsiung Taiwan 80708 Republic of China +886-7-3125339 +886-7-3121101 ext. 2585
| | - Hsin-Yu Lai
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University Kaohsiung Taiwan 80708 Republic of China +886-7-3125339 +886-7-3121101 ext. 2585
| | - Yu-Lun Chang
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University Kaohsiung Taiwan 80708 Republic of China +886-7-3125339 +886-7-3121101 ext. 2585
| | - Kuo-Hui Wu
- Department of Chemistry, Graduate School of Science, The University of Tokyo Tokyo 113-0033 Japan.,Department of Chemistry, Tamkang University Tamsui 251 Taiwan Republic of China
| | - Shangwu Ding
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University Kaohsiung Taiwan 80708 Republic of China +886-7-3125339 +886-7-3121101 ext. 2585.,Department of Chemistry, National Sun Yat-sen University Kaohsiung Taiwan 80424 Republic of China
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University Kaohsiung Taiwan 80708 Republic of China +886-7-3125339 +886-7-3121101 ext. 2585.,Department of Chemistry, National Sun Yat-sen University Kaohsiung Taiwan 80424 Republic of China.,Department of Medical Research, Kaohsiung Medical University Hospital Kaohsiung 80708 Taiwan Republic of China
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15
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Synthesis of zinc complexes bearing pyridine derivatives and their application of ε-caprolactone and L-Lactide polymerization. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Kricheldorf HR, Weidner SM. High molar mass cyclic poly(l-lactide) obtained by means of neat tin(ii) 2-ethylhexanoate. Polym Chem 2020. [DOI: 10.1039/d0py00811g] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
l-Lactide was polymerized in bulk at 120, 140, 160 and 180 °C with neat tin(ii) 2-ethylhexanoate (SnOct2) as the catalyst and a cyclic topology was detected.
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Affiliation(s)
| | - Steffen M. Weidner
- BAM
- Federal Institute for Material Research and Testing
- D-12489 Berlin
- Germany
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17
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Kricheldorf HR, Weidner SM. About the influence of salicylic acid on tin(II)octanoate-catalyzed ring-opening polymerization of l-lactide. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.07.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Wang W, Hsu S, Su Y, Chen H, Lin C. Dual zinc catalysts for
L
‐lactide polymerization and reaction of CO
2
with cyclohexene oxide. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201900168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Wei‐Chu Wang
- Department of ChemistryNational Chung Hsing University Taichung Taiwan, ROC
| | - Shih‐Hsien Hsu
- Department of ChemistryNational Chung Hsing University Taichung Taiwan, ROC
| | - Yu‐Chia Su
- Department of ChemistryNational Chung Hsing University Taichung Taiwan, ROC
| | - Hsuan‐Ying Chen
- Department of Medicinal and Applied ChemistryKaohsiung Medical University Kaohsiung Taiwan, ROC
- Department of Medical ResearchKaohsiung Medical University Hospital Kaohsiung Taiwan, ROC
| | - Chu‐Chieh Lin
- Department of ChemistryNational Chung Hsing University Taichung Taiwan, ROC
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19
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Metkar S, Sathe V, Rahman I, Idage B, Idage S. Ring opening polymerization of lactide: kinetics and modeling. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2018.1550395] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Sangeeta Metkar
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Pune, India
- Chemical Engineering Department, Dr. Babasaheb Ambedkar Technological University, Lonere, Raigad, India
| | - Vivek Sathe
- Chemical Engineering Department, Dr. Babasaheb Ambedkar Technological University, Lonere, Raigad, India
| | - Imran Rahman
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, India
| | - Bhaskar Idage
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Pune, India
| | - Susheela Idage
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Pune, India
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20
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Weidner SM, Kricheldorf HR. Transesterification in Alcohol-Initiated ROPs of l
- and meso
-Lactide Catalyzed by Sn(II) and Sn(IV) Compounds at Low Temperatures. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800445] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Steffen M. Weidner
- Federal Institute for Materials Research and Testing-BAM; Richard-Willstätter-Straße 11 D-12489 Berlin Germany
| | - Hans R. Kricheldorf
- Institut für Technische und Makromolekulare Chemie; Bundesstraße 45 D-20146 Hamburg Germany
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21
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Weidner SM, Kricheldorf HR. Spirocyclic bisphenoxides of Ge, Zr, and Sn as catalysts for ring-expansion polymerizations of l
- and meso-lactide. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.29259] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Steffen M. Weidner
- BAM, Federal Institute for Material Research and Testing; Richard Willstätter Str. 11 D-12489 Berlin Germany
| | - Hans R. Kricheldorf
- Institut für Technische und Makromolekulare Chemie der Universität; Bundesstr. 45 D-20146, Hamburg Germany
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22
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Rosa RP, Ferreira FV, Saravia APK, Rocco SA, Sforça ML, Gouveia RF, Lona LMF. A Combined Computational and Experimental Study on the Polymerization of ε-Caprolactone. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03288] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Raphael P. Rosa
- School of Chemical Engineering, University of Campinas (UNICAMP), Campinas-SP, Brazil
| | - Filipe V. Ferreira
- School of Chemical Engineering, University of Campinas (UNICAMP), Campinas-SP, Brazil
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas-SP, Brazil
| | - Ana Paola K. Saravia
- Department of Materials Engineering, Federal University of Paraná (UFPR), Curitiba-PR, Brazil
| | - Silvana A. Rocco
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas-SP, Brazil
| | - Mauricio L. Sforça
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas-SP, Brazil
| | - Rubia F. Gouveia
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas-SP, Brazil
| | - Liliane M. F. Lona
- School of Chemical Engineering, University of Campinas (UNICAMP), Campinas-SP, Brazil
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23
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High molar mass cyclic poly(l-lactide) via ring-expansion polymerization with cyclic dibutyltin bisphenoxides. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.05.036] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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Reaction kinetics and simulations of ring-opening polymerization for the synthesis of polybutylene terephthalate. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.05.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Szymanski R, Sosnowski S. Evolution of Chain Length Distribution and Microstructure of Macromolecules in Irreversible Copolymerization Proceeding with Segmental Exchange Investigated with a New Monte Carlo Algorithm. MACROMOL THEOR SIMUL 2018. [DOI: 10.1002/mats.201800015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ryszard Szymanski
- Center of Molecular and Macromolecular Studies; Sienkiewicza 112 Lodz 90-363 Poland
| | - Stanislaw Sosnowski
- Center of Molecular and Macromolecular Studies; Sienkiewicza 112 Lodz 90-363 Poland
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26
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Kricheldorf HR, Weidner SM. Ring-expansion polymerization of meso-lactide catalyzed by dibutyltin derivatives. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.28948] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hans Rytger Kricheldorf
- Institut für Technische und Makromolekulare Chemie der Universität, Bundesstr. 45; Hamburg D-20146 Germany
| | - Steffen M. Weidner
- Federal Institute of Materials Research and Testing - BAM, Richard Willstätter Str. 11; Berlin D-2489 Germany
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27
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Long T, Zhang C, Liu H, Chen X, Zhao S, Zhou C. Molecular Weight Distribution Simulation in Equilibrium Ring-Opening Polymerization: A New Macroscopic Model. MACROMOL THEOR SIMUL 2017. [DOI: 10.1002/mats.201700057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Teng Long
- School of Material Science and Engineering; Shandong University; Jingshi Road 17923 Jinan 250061 China
| | - Chen Zhang
- School of Material Science and Engineering; Shandong University; Jingshi Road 17923 Jinan 250061 China
| | - Hui Liu
- Power Sources Technology Center; State Grid Shandong Electric Power Research Institute; Jinan 250100 Shandong China
| | - Xin Chen
- School of Material Science and Engineering; Shandong University; Jingshi Road 17923 Jinan 250061 China
| | - Shigui Zhao
- School of Material Science and Engineering; Shandong University; Jingshi Road 17923 Jinan 250061 China
| | - Chuanjian Zhou
- School of Material Science and Engineering; Shandong University; Jingshi Road 17923 Jinan 250061 China
- The Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education; Jingshi Road 17923 Jinan 250061 China
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28
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Weidner SM, Kricheldorf HR. Transesterification in the Solid State of Cyclic and Linear Poly(l
-lactide)s. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700114] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Steffen M. Weidner
- BAM - Federal Institute of Materials Research and Testing; Richard Willstätterstr. 11 12489 Berlin Germany
| | - Hans R. Kricheldorf
- Institut für Technische und Makromolekulare Chemie; Universität Hamburg; Bundesstraße 45 22607 Hamburg Germany
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29
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Meimaroglou D, Pladis P, Kiparissides C. Dynamic Monte Carlo Simulation of thel,l-Lactide Ring-Opening Polymerization. MACROMOL REACT ENG 2016. [DOI: 10.1002/mren.201600039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dimitrios Meimaroglou
- CNRS; LRGP; UMR 7274 Nancy F-54001 France
- Université de Lorraine; LRGP; UMR 7274 Nancy F-54001 France
| | - Prokopios Pladis
- Chemical Process and Energy Resources Institute; Centre for Research and Technology Hellas; P.O. Box 60361, Thermi 570 01 Thessaloniki Greece
| | - Costas Kiparissides
- Chemical Process and Energy Resources Institute; Centre for Research and Technology Hellas; P.O. Box 60361, Thermi 570 01 Thessaloniki Greece
- Department of Chemical Engineering; Aristotle University of Thessaloniki; P.O. Box 472 Thessaloniki 541 24 Greece
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30
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Zhang N, Seider WD, Chen B. Bifurcation control of high-dimensional nonlinear chemical processes using an extended washout-filter algorithm. Comput Chem Eng 2016. [DOI: 10.1016/j.compchemeng.2015.09.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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31
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Sosnowski S, Lewinski P. l-Lactide polymerization catalysed by tin(ii) 2-ethyl-hexanoate. A deeper look at chain transfer reactions. Polym Chem 2015. [DOI: 10.1039/c5py00748h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Segmental exchange reactions inl-lactide polymerization catalysed by tin octoate yield chains with even and odd numbers of lactoyl units. The efficiency of the reactions depends on the position of the attacked unit in the chain. The terminal units are at least 100 times more reactive than others.
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Affiliation(s)
- Stanislaw Sosnowski
- Centre of Molecular and Macromolecular Studies Polish Academy of Sciences
- 90-363 Lodz
- Poland
| | - Piotr Lewinski
- Centre of Molecular and Macromolecular Studies Polish Academy of Sciences
- 90-363 Lodz
- Poland
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