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Tan JD, Ramalingam B, Wong SL, Cheng JJW, Lim YF, Chellappan V, Khan SA, Kumar J, Hippalgaonkar K. Transfer Learning of Full Molecular Weight Distributions via High-Throughput Computer-Controlled Polymerization. J Chem Inf Model 2023; 63:4560-4573. [PMID: 37432764 DOI: 10.1021/acs.jcim.3c00504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
The skew and shape of the molecular weight distribution (MWD) of polymers have a significant impact on polymer physical properties. Standard summary metrics statistically derived from the MWD only provide an incomplete picture of the polymer MWD. Machine learning (ML) methods coupled with high-throughput experimentation (HTE) could potentially allow for the prediction of the entire polymer MWD without information loss. In our work, we demonstrate a computer-controlled HTE platform that is able to run up to 8 unique variable conditions in parallel for the free radical polymerization of styrene. The segmented-flow HTE system was equipped with an inline Raman spectrometer and offline size exclusion chromatography (SEC) to obtain time-dependent conversion and MWD, respectively. Using ML forward models, we first predict monomer conversion, intrinsically learning varying polymerization kinetics that change for each experimental condition. In addition, we predict entire MWDs including the skew and shape as well as SHAP analysis to interpret the dependence on reagent concentrations and reaction time. We then used a transfer learning approach to use the data from our high-throughput flow reactor to predict batch polymerization MWDs with only three additional data points. Overall, we demonstrate that the combination of HTE and ML provides a high level of predictive accuracy in determining polymerization outcomes. Transfer learning can allow exploration outside existing parameter spaces efficiently, providing polymer chemists with the ability to target the synthesis of polymers with desired properties.
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Affiliation(s)
- Jin Da Tan
- Institute of Materials Research & Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634 Singapore, Singapore
- National University of Singapore Graduate School - Integrative Sciences and Engineering Programme, 21 Lower Kent Ridge Road, Singapore 119077, Singapore
| | - Balamurugan Ramalingam
- Institute of Materials Research & Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634 Singapore, Singapore
- Institute of Sustainability for Chemicals, Energy and Environment, Agency for Science Technology and Research, 8 Biomedical Grove, Singapore 138665, Singapore
| | - Swee Liang Wong
- Institute of Materials Research & Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634 Singapore, Singapore
- Home Team Science and Technology Agency, Singapore 138507, Singapore
| | - Jayce Jian Wei Cheng
- Institute of Materials Research & Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634 Singapore, Singapore
| | - Yee-Fun Lim
- Institute of Materials Research & Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634 Singapore, Singapore
- Institute of Sustainability for Chemicals, Energy and Environment, Agency for Science Technology and Research, 8 Biomedical Grove, Singapore 138665, Singapore
| | - Vijila Chellappan
- Institute of Materials Research & Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634 Singapore, Singapore
| | - Saif A Khan
- National University of Singapore Graduate School - Integrative Sciences and Engineering Programme, 21 Lower Kent Ridge Road, Singapore 119077, Singapore
- Department of Chemical and Biomolecular Engineering - National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Jatin Kumar
- Institute of Materials Research & Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634 Singapore, Singapore
- Xinterra Pte. Ltd., 77 Robinson Road, Singapore 068896, Singapore
| | - Kedar Hippalgaonkar
- Institute of Materials Research & Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634 Singapore, Singapore
- Department of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
- Institute of Functional Intelligent Materials - National University of Singapore, 4 Science Drive 2, Singapore 117544, Singapore
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Kandelhard F, Georgopanos P. A Kinetic and Heat Balance Model for Anionic Batch Block Copolymerization of Styrene and Isoprene. CHEM-ING-TECH 2023. [DOI: 10.1002/cite.202200205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Felix Kandelhard
- Helmoltz-Zentrum Hereon Institute of Membrane Research Max-Planck-Straße 1 21502 Geesthacht Germany
| | - Prokopios Georgopanos
- Helmoltz-Zentrum Hereon Institute of Membrane Research Max-Planck-Straße 1 21502 Geesthacht Germany
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Bednarz S, Bujok S, Mielczarek K, Świergosz T, Wierzbicki S, Konefał R, Konefał M, Nevoralová M, Pavlova E, Beneš H. Synthesis of low-molecular weight itaconic acid polymers as nanoclay dispersants and dispersion stabilizers. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Vedelago J, Chacón D, Romero M, Venencia D, Mattea F, Valente M. Dose-response of Fricke- and PAGAT-dosimetry gels in kilovoltage and megavoltage photon beams: Impact of LET on sensitivity. Phys Med 2021; 84:41-49. [PMID: 33838531 DOI: 10.1016/j.ejmp.2021.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 02/24/2021] [Accepted: 03/03/2021] [Indexed: 11/17/2022] Open
Abstract
PURPOSE Dosimetry of ionizing radiation quantifies the energy deposited by an incident beam to the medium. This study presents the relative response of two types of gel dosimeters describing their differences by estimating radiation chemical yields produced in water radiolysis. METHODS Two types of gel dosimeter were used, namely an acid ferrous ion solution infused with xylenol orange known as Fricke gel and a polymer gel based on acrylamide and N,N'-methylenebis(acrylamide) known as PAGAT. Samples were irradiated using two photon beam energies, one from a conventional X-ray tube operated at 44 kV and the other one from a LINAC operated at 6 MV. The dosimeters were analyzed by optical absorbance and magnetic resonance imaging. Additionally, the linear energy transfer of each beam was calculated using Monte Carlo simulations for further estimation of the radiation chemical yields produced during water radiolysis. RESULTS Obtained results for both gel dosimeters indicate that their response at 44 kV and 6 MV are different, regardless of the read-out technique. On average, the sensitivity at 44 kV was found to be 65 % of the response at 6 MV. The calculated radiation chemical yields are in agreement with the observed experimental results. CONCLUSIONS The main reason for the difference in the response of the dosimeters may be related to the linear energy transfer of each photon beam, which varies the production of primary chemical species during water radiolysis.
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Affiliation(s)
- José Vedelago
- Instituto de Física Enrique Gaviola (IFEG), CONICET, Córdoba, Argentina; Laboratorio de Investigación e Instrumentación en Física Aplicada a la Medicina e Imágenes por Rayos X, FAMAF-UNC, Córdoba, Argentina.
| | - David Chacón
- Laboratorio de Investigación e Instrumentación en Física Aplicada a la Medicina e Imágenes por Rayos X, FAMAF-UNC, Córdoba, Argentina; Departamento de Fśica, Universidad Nacional, Heredia, Costa Rica
| | - Marcelo Romero
- Departamento de Química Orgánica, FCQ-UNC, Córdoba, Argentina; Instituto de Investigación y Desarrollo en Ingeniería de Procesos y Química Aplicada (IPQA), CONICET, Córdoba, Argentina
| | - Daniel Venencia
- Instituto Zunino - Fundación Marie Curie, Córdoba, Argentina
| | - Facundo Mattea
- Departamento de Química Orgánica, FCQ-UNC, Córdoba, Argentina; Instituto de Investigación y Desarrollo en Ingeniería de Procesos y Química Aplicada (IPQA), CONICET, Córdoba, Argentina
| | - Mauro Valente
- Instituto de Física Enrique Gaviola (IFEG), CONICET, Córdoba, Argentina; Laboratorio de Investigación e Instrumentación en Física Aplicada a la Medicina e Imágenes por Rayos X, FAMAF-UNC, Córdoba, Argentina; Centro de Física e Ingeniería en Medicina - CFIM & Departamento de Ciencias Físicas, Universidad de La Frontera, Temuco, Chile
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Moad G. A Critical Assessment of the Kinetics and Mechanism of Initiation of Radical Polymerization with Commercially Available Dialkyldiazene Initiators. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2018.08.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Schuetz JH, Sandbrink L, Vana P. Insights into the Ring-Expansion Polymerization of Thiiranes with 2,4-Thiazolidinedione. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300213] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Soeriyadi AH, R.Whittaker M, Boyer C, Davis TP. Soft ionization mass spectroscopy: Insights into the polymerization mechanism. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26536] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Voll D, Junkers T, Barner‐Kowollik C. A qualitative and quantitative post‐mortem analysis: Studying free‐radical initiation processes via soft ionization mass spectrometry. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26076] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Dominik Voll
- Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76128 Karlsruhe, Germany
| | - Tanja Junkers
- Institute for Materials Research (IMO), Polymer Reaction Design Group, Universiteit Hasselt, Agoralaan, Gebouw D, BE‐3590 Diepenbeek, Belgium
| | - Christopher Barner‐Kowollik
- Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76128 Karlsruhe, Germany
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Altuntaş E, Knop K, Tauhardt L, Kempe K, Crecelius AC, Jäger M, Hager MD, Schubert US. Tandem mass spectrometry of poly(ethylene imine)s by electrospray ionization (ESI) and matrix-assisted laser desorption/ionization (MALDI). JOURNAL OF MASS SPECTROMETRY : JMS 2012; 47:105-114. [PMID: 22282096 DOI: 10.1002/jms.2032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this contribution, linear poly(ethylene imine) (PEI) polymers, which are of importance in gene delivery, are investigated in detail by using electrospray ionization-quadrupole-time of flight (ESI-Q-TOF) and matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrometry (MS). The analyzed PEIs with different end groups were synthesized using the polymerization of substituted 2-oxazoline via a living cationic ring-opening polymerization (CROP) and a subsequent hydrolysis under acidic conditions. The main goal of this study was to identify linear PEI polymers in a detailed way to gain information about their fragmentation pathways. For this purpose, a detailed characterization of three different linear PEIs was performed by using ESI-Q-TOF and MALDI-TOF MS in combination with collision-induced dissociation (CID) experiments. In ESI-MS as well as MALDI-MS analysis, the obtained spectra of PEIs resulted in fitting mass distributions for the investigated PEIs. In the tandem MS analysis, a 1,2-hydride shift with a charge-remote rearrangement via a four-membered cyclic transition state, as well as charge-induced fragmentation reactions, was proposed as the main fragmentation mechanisms according to the obtained fragmentation products from the protonated parent peaks. In addition, heterolytic and homolytic cleavages were proposed as alternative fragmentation pathways. Moreover, a 1,4-hydrogen elimination was proposed to explain different fragmentation products obtained from the sodiated parent peaks.
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Affiliation(s)
- Esra Altuntaş
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-Universität Jena, Humboldtstrasse 10, 07743 , Jena, Germany
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Gruendling T, Kaupp M, Blinco JP, Barner-Kowollik C. Photoinduced Conjugation of Dithioester- and Trithiocarbonate-Functional RAFT Polymers with Alkenes. Macromolecules 2010. [DOI: 10.1021/ma101893u] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Till Gruendling
- Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstrasse 18, 76128 Karlsruhe, Germany
| | - Michael Kaupp
- Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstrasse 18, 76128 Karlsruhe, Germany
| | - James P. Blinco
- Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstrasse 18, 76128 Karlsruhe, Germany
| | - Christopher Barner-Kowollik
- Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstrasse 18, 76128 Karlsruhe, Germany
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Altuntaş E, Kempe K, Crecelius A, Hoogenboom R, Schubert US. ESI-MS & MS/MS Analysis of Poly(2-oxazoline)s with Different Side Groups. MACROMOL CHEM PHYS 2010. [DOI: 10.1002/macp.201000323] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Affiliation(s)
- Steffen M. Weidner
- Federal Institute for Materials Research and Testing (BAM), D-12489 Berlin, Richard-Willstaetter-Strasse 11, Germany, and Department of Chemistry, Wayne State University, 5101 Cass Avenue, 33 Chemistry, Detroit, Michigan 48202
| | - Sarah Trimpin
- Federal Institute for Materials Research and Testing (BAM), D-12489 Berlin, Richard-Willstaetter-Strasse 11, Germany, and Department of Chemistry, Wayne State University, 5101 Cass Avenue, 33 Chemistry, Detroit, Michigan 48202
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Gruendling T, Weidner S, Falkenhagen J, Barner-Kowollik C. Mass spectrometry in polymer chemistry: a state-of-the-art up-date. Polym Chem 2010. [DOI: 10.1039/b9py00347a] [Citation(s) in RCA: 194] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Vana P, Goto A. Kinetic Simulations of Reversible Chain Transfer Catalyzed Polymerization (RTCP): Guidelines to Optimum Molecular Weight Control. MACROMOL THEOR SIMUL 2009. [DOI: 10.1002/mats.200900064] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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