1
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Conka R, Marien Y, Van Steenberge P, Hoogenboom R, D'hooge DR. A unified kinetic Monte Carlo approach to evaluate (a)symmetric block and gradient copolymers with linear and branched chains illustrated for poly(2-oxazoline)s. Polym Chem 2022. [DOI: 10.1039/d1py01391b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of well-defined gradient, block-gradient and di-block copolymers with both asymmetric and symmetric compositions considering hydrophilic and hydrophobic monomer units is relevant for application fields, such as drug/gene delivery...
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2
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Wu Y, Figueira FL, Edeleva M, Van Steenberge PHM, D'hooge DR, Zhou Y, Luo Z. Cost‐efficient modeling of distributed molar mass and topological variations in graft copolymer synthesis by upgrading the method of moments. AIChE J 2021. [DOI: 10.1002/aic.17559] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yi‐Yang Wu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai People's Republic of China
| | | | - Mariya Edeleva
- Laboratory for Chemical Technology (LCT) Ghent University Ghent Belgium
| | | | - Dagmar R. D'hooge
- Laboratory for Chemical Technology (LCT) Ghent University Ghent Belgium
- Centre for Textiles Science and Engineering (CTSE) Ghent University Ghent Belgium
| | - Yin‐Ning Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai People's Republic of China
| | - Zheng‐Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai People's Republic of China
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3
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Abstract
A critical review on the synthesis, characterization, and modeling of polymer grafting is presented. Although the motivation stemmed from grafting synthetic polymers onto lignocellulosic biopolymers, a comprehensive overview is also provided on the chemical grafting, characterization, and processing of grafted materials of different types, including synthetic backbones. Although polymer grafting has been studied for many decades—and so has the modeling of polymer branching and crosslinking for that matter, thereby reaching a good level of understanding in order to describe existing branching/crosslinking systems—polymer grafting has remained behind in modeling efforts. Areas of opportunity for further study are suggested within this review.
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4
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Zhu H, Yang H, Ma Y, Lu TJ, Xu F, Genin GM, Lin M. Spatiotemporally Controlled Photoresponsive Hydrogels: Design and Predictive Modeling from Processing through Application. ADVANCED FUNCTIONAL MATERIALS 2020; 30:2000639. [PMID: 32802013 PMCID: PMC7418561 DOI: 10.1002/adfm.202000639] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/16/2020] [Indexed: 05/16/2023]
Abstract
Photoresponsive hydrogels (PRHs) are soft materials whose mechanical and chemical properties can be tuned spatially and temporally with relative ease. Both photo-crosslinkable and photodegradable hydrogels find utility in a range of biomedical applications that require tissue-like properties or programmable responses. Progress in engineering with PRHs is facilitated by the development of theoretical tools that enable optimization of their photochemistry, polymer matrices, nanofillers, and architecture. This review brings together models and design principles that enable key applications of PRHs in tissue engineering, drug delivery, and soft robotics, and highlights ongoing challenges in both modeling and application.
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Affiliation(s)
- Hongyuan Zhu
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Haiqian Yang
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Yufei Ma
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Tian Jian Lu
- State Key Laboratory of Mechanics and Control of Mechanical StructuresNanjing University of Aeronautics and AstronauticsNanjing210016P. R. China
- MOE Key Laboratory for Multifunctional Materials and StructuresXi'an Jiaotong UniversityXi'an710049P. R. China
| | - Feng Xu
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Guy M. Genin
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
- Department of Mechanical Engineering & Materials ScienceWashington University in St. LouisSt. LouisMO63130USA
- NSF Science and Technology Center for Engineering MechanobiologyWashington University in St. LouisSt. LouisMO63130USA
| | - Min Lin
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
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De Smit K, Marien YW, Van Geem KM, Van Steenberge PHM, D'hooge DR. Connecting polymer synthesis and chemical recycling on a chain-by-chain basis: a unified matrix-based kinetic Monte Carlo strategy. REACT CHEM ENG 2020. [DOI: 10.1039/d0re00266f] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Polymer synthesis and subsequent depolymerisation/degradation are linked at the molecular level.
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Affiliation(s)
- Kyann De Smit
- Laboratory for Chemical Technology (LCT)
- Ghent University
- 9052 Zwijnaarde
- Belgium
| | - Yoshi W. Marien
- Laboratory for Chemical Technology (LCT)
- Ghent University
- 9052 Zwijnaarde
- Belgium
| | - Kevin M. Van Geem
- Laboratory for Chemical Technology (LCT)
- Ghent University
- 9052 Zwijnaarde
- Belgium
| | | | - Dagmar R. D'hooge
- Laboratory for Chemical Technology (LCT)
- Ghent University
- 9052 Zwijnaarde
- Belgium
- Centre for Textile Science and Engineering (CTSE)
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6
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Schamboeck V, Iedema PD, Kryven I. Dynamic Networks that Drive the Process of Irreversible Step-Growth Polymerization. Sci Rep 2019; 9:2276. [PMID: 30783151 PMCID: PMC6381213 DOI: 10.1038/s41598-018-37942-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 12/18/2018] [Indexed: 11/15/2022] Open
Abstract
Many research fields, reaching from social networks and epidemiology to biology and physics, have experienced great advance from recent developments in random graphs and network theory. In this paper we propose a generic model of step-growth polymerisation as a promising application of the percolation on a directed random graph. This polymerisation process is used to manufacture a broad range of polymeric materials, including: polyesters, polyurethanes, polyamides, and many others. We link features of step-growth polymerisation to the properties of the directed configuration model. In this way, we obtain new analytical expressions describing the polymeric microstructure and compare them to data from experiments and computer simulations. The molecular weight distribution is related to the sizes of connected components, gelation to the emergence of the giant component, and the molecular gyration radii to the Wiener index of these components. A model on this level of generality is instrumental in accelerating the design of new materials and optimizing their properties, as well as it provides a vital link between network science and experimentally observable physics of polymers.
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Affiliation(s)
- Verena Schamboeck
- University of Amsterdam, Van't Hoff Institute for Molecular Sciences, Amsterdam, 1090 GE, The Netherlands.
| | - Piet D Iedema
- University of Amsterdam, Van't Hoff Institute for Molecular Sciences, Amsterdam, 1090 GE, The Netherlands
| | - Ivan Kryven
- University of Amsterdam, Van't Hoff Institute for Molecular Sciences, Amsterdam, 1090 GE, The Netherlands
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7
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Zhu H, Yang X, Genin GM, Lu TJ, Xu F, Lin M. The relationship between thiol-acrylate photopolymerization kinetics and hydrogel mechanics: An improved model incorporating photobleaching and thiol-Michael addition. J Mech Behav Biomed Mater 2018; 88:160-169. [PMID: 30173068 PMCID: PMC6392438 DOI: 10.1016/j.jmbbm.2018.08.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 07/21/2018] [Accepted: 08/17/2018] [Indexed: 11/24/2022]
Abstract
Biocompatible hydrogels with defined mechanical properties are critical to tissue engineering and regenerative medicine. Thiol-acrylate photopolymerized hydrogels have attracted special interest for their degradability and cytocompatibility, and for their tunable mechanical properties through controlling factors that affect reaction kinetics (e.g., photopolymerization, stoichiometry, temperature, and solvent choice). In this study, we hypothesized that the mechanical property of these hydrogels can be tuned by photoinitiators via photobleaching and by thiol-Michael addition reactions. To test this hypothesis, a multiscale mathematical model incorporating both photobleaching and thiol-Michael addition reactions was developed and validated. After validating the model, the effects of thiol concentration, light intensity, and pH values on hydrogel mechanics were investigated. Results revealed that hydrogel stiffness (i) was maximized at a light intensity-specific optimal concentration of thiol groups; (ii) increased with decreasing pH when synthesis occurred at low light intensity; and (iii) increased with decreasing light intensity when synthesis occurred at fixed precursor composition. The multiscale model revealed that the latter was due to higher initiation efficiency at lower light intensity. More broadly, the model provides a framework for predicting mechanical properties of hydrogels based upon the controllable kinetics of thiol-acrylate photopolymerization.
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Affiliation(s)
- Hongyuan Zhu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering & Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Xiaoxiao Yang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering & Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Guy M Genin
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering & Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China; Department of Mechanical Engineering & Materials Science, Washington University in St. Louis, St. Louis 63130, MO, USA; NSF Science and Technology Center for Engineering Mechanobiology, Washington University in St. Louis, St. Louis 63130, MO, USA
| | - Tian Jian Lu
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China; MOE Key Laboratory for Multifunctional Materials and Structures, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Feng Xu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering & Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Min Lin
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering & Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China.
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8
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Costa LI, Storti G, Lazzari S. Solution of population balance equations by logarithmic shape preserving interpolation on finite elements. Comput Chem Eng 2018. [DOI: 10.1016/j.compchemeng.2018.08.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Deterministic Approaches for Simulation of Nitroxide-Mediated Radical Polymerization. INT J POLYM SCI 2018. [DOI: 10.1155/2018/7803702] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Since its development in the last decades, controlled radical polymerization (CRP) has become a very promising option for the synthesis of polymers with controlled structure. The design and production of tailor-made materials can be significantly improved by developing models capable of predicting the polymer properties from the operating conditions. Nitroxide-mediated polymerization (NMP) was the first of the three main variants of CRP to be discovered. Although it has lost preference over the years against other CRP alternatives, NMP is still an attractive synthesis method because of its simple experimental implementation and environmental friendliness. This review focuses on deterministic methods employed in mathematical models of NMP. It presents an overview of the different techniques that have been reported for modelling NMP processes in homogeneous and heterogeneous media, covering from the prediction of average properties to the latest techniques for modelling univariate and multivariate distributions of polymer properties. Finally, an outlook of model-based design studies of NMP processes is given.
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11
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Kryven I. General expression for the component size distribution in infinite configuration networks. Phys Rev E 2017; 95:052303. [PMID: 28618550 DOI: 10.1103/physreve.95.052303] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Indexed: 11/07/2022]
Abstract
In the infinite configuration network the links between nodes are assigned randomly with the only restriction that the degree distribution has to match a predefined function. This work presents a simple equation that gives for an arbitrary degree distribution the corresponding size distribution of connected components. This equation is suitable for fast and stable numerical computations up to the machine precision. The analytical analysis reveals that the asymptote of the component size distribution is completely defined by only a few parameters of the degree distribution: the first three moments, scale, and exponent (if applicable). When the degree distribution features a heavy tail, multiple asymptotic modes are observed in the component size distribution that, in turn, may or may not feature a heavy tail.
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Affiliation(s)
- Ivan Kryven
- University of Amsterdam, P.O. Box 94214, 1090 GE, Amsterdam, The Netherlands
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12
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Lazzari S, Abolhasani M, Jensen KF. Modeling of the formation kinetics and size distribution evolution of II–VI quantum dots. REACT CHEM ENG 2017. [DOI: 10.1039/c7re00068e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A population balance model describes the formation of II–VI semiconductor nanocrystals and predicts experimentally observed properties of the nanocrystal size distribution.
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Affiliation(s)
- Stefano Lazzari
- Massachusetts Institute of Technology
- Department of Chemical Engineering
- Cambridge
- USA
| | - Milad Abolhasani
- Massachusetts Institute of Technology
- Department of Chemical Engineering
- Cambridge
- USA
- Department of Chemical and Biomolecular Engineering
| | - Klavs F. Jensen
- Massachusetts Institute of Technology
- Department of Chemical Engineering
- Cambridge
- USA
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13
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Brandolin A, Assini Balbueno A, Asteasuain M. Improved numerical inversion methods for the recovery of bivariate distributions of polymer properties from 2D probability generating function domains. Comput Chem Eng 2016. [DOI: 10.1016/j.compchemeng.2016.07.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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15
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Hosemann B, Drache M, Beuermann S. Experimentally Calibrated Random Walk of Branched Polymers: A Pragmatic Approach. MACROMOL THEOR SIMUL 2016. [DOI: 10.1002/mats.201600067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Benjamin Hosemann
- Clausthal University of Technology; Institute of Technical Chemistry; Arnold-Sommerfeld-Str. 6 38678 Clausthal-Zellerfeld Germany
| | - Marco Drache
- Clausthal University of Technology; Institute of Technical Chemistry; Arnold-Sommerfeld-Str. 6 38678 Clausthal-Zellerfeld Germany
| | - Sabine Beuermann
- Clausthal University of Technology; Institute of Technical Chemistry; Arnold-Sommerfeld-Str. 6 38678 Clausthal-Zellerfeld Germany
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16
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Nicoud L, Jagielski J, Pfister D, Lazzari S, Massant J, Lattuada M, Morbidelli M. Kinetics of Monoclonal Antibody Aggregation from Dilute toward Concentrated Conditions. J Phys Chem B 2016; 120:3267-80. [PMID: 27007829 DOI: 10.1021/acs.jpcb.5b11791] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Gaining understanding on the aggregation behavior of proteins under concentrated conditions is of both fundamental and industrial relevance. Here, we study the aggregation kinetics of a model monoclonal antibody (mAb) under thermal stress over a wide range of protein concentrations in various buffer solutions. We follow experimentally the monomer depletion and the aggregate growth by size exclusion chromatography with inline light scattering. We describe the experimental results in the frame of a kinetic model based on population balance equations, which allows one to discriminate the contributions of the conformational and of the colloidal stabilities to the global aggregation rate. Finally, we propose an expression for the aggregation rate constant, which accounts for solution viscosity, protein-protein interactions, as well as aggregate compactness. All these effects can be quantified by light scattering techniques. It is found that the model describes well the experimental data under dilute conditions. Under concentrated conditions, good model predictions are obtained when the solution pH is far below the isoelectric point (pI) of the mAb. However, peculiar effects arise when the solution pH is increased toward the mAb pI, and possible explanations are discussed.
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Affiliation(s)
- Lucrèce Nicoud
- Department of Chemistry and Applied Biosciences, ETH Zurich , CH-8093 Zurich, Switzerland
| | - Jakub Jagielski
- Department of Chemistry and Applied Biosciences, ETH Zurich , CH-8093 Zurich, Switzerland
| | - David Pfister
- Department of Chemistry and Applied Biosciences, ETH Zurich , CH-8093 Zurich, Switzerland
| | - Stefano Lazzari
- Department of Chemical Engineering, MIT , Cambridge, Massachusetts 02139, United States
| | - Jan Massant
- UCB Pharma, Braine l'Alleud, 1070 Anderlecht, Belgium
| | - Marco Lattuada
- Adolphe Merkle Institute, University of Fribourg , 1700 Fribourg, Switzerland
| | - Massimo Morbidelli
- Department of Chemistry and Applied Biosciences, ETH Zurich , CH-8093 Zurich, Switzerland
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17
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Lazzari S, Jaquet B, Colonna L, Storti G, Lattuada M, Morbidelli M. Interplay between Aggregation and Coalescence of Polymeric Particles: Experimental and Modeling Insights. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:9296-9305. [PMID: 26275145 DOI: 10.1021/acs.langmuir.5b02503] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In the present work, the aggregation behavior of polymeric particles possessing different glass transition temperatures (i.e., different "softnesses") has been studied to shed light on the interplay between aggregation and coalescence. In particular, the time evolution of the clusters hydrodynamic and gyration radii as well as of their structure factor has been monitored. With the help of an ad hoc developed deterministic model, based on population balance equations, it was possible to establish a link between the experimentally obtained light scattering data and the predicted particle size distribution. The simplicity of the model, involving one single adjustable parameter based on the coalescence characteristic time, allowed us to obtain a good accordance between simulations and experimental results with little computational effort.
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Affiliation(s)
- S Lazzari
- Department of Chemical Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - B Jaquet
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich , Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - L Colonna
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich , Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - G Storti
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich , Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - M Lattuada
- Univ Fribourg , Adolphe Merkle Institute, Chemin des Verdiers 4, CH-1700 Fribourg, Switzerland
| | - M Morbidelli
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich , Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
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18
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Kryven I, Iedema P. Transition into the gel regime for crosslinking radical polymerisation in a continuously stirred tank reactor. Chem Eng Sci 2015. [DOI: 10.1016/j.ces.2014.11.064] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Nicoud L, Lazzari S, Balderas Barragán D, Morbidelli M. Fragmentation of amyloid fibrils occurs in preferential positions depending on the environmental conditions. J Phys Chem B 2015; 119:4644-52. [PMID: 25792156 DOI: 10.1021/acs.jpcb.5b01160] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Understanding the mechanism of amyloid fibril breakage is of fundamental importance in various research fields including biomedicine and bionanotechnology. The aim of this work is to clarify the impact of temperature and agitation speed on the fibril breakage rate constant, which depends both on the fibril length as well as on the position of fragmentation along the fibril longitudinal axis. In particular, we intend to discriminate between three fibril fragmentation mechanisms: erosion (i.e., breakage occurs preferentially at the ends of the fibril), random (i.e., breakage occurs with the same likelihood at any position), or central (i.e., breakage occurs preferentially at the center of the fibril). To do so, we compare the time evolution of the fibril length distribution followed with atomic force microscopy with simulations from a kinetic model based on population balance equations (PBE). In this frame, we investigate the breakage mechanism of insulin fibrils, which turns out to be affected by the operative conditions employed. Moreover, we compare our findings with literature data obtained with β-lactoglobulin and β2-microglobulin. It is observed that high temperature drives the breakage toward an erosion mechanism, while a high agitation rate rather induces a central breakage.
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Affiliation(s)
- Lucrèce Nicoud
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg, 1, 8093 Zürich, Switzerland
| | - Stefano Lazzari
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg, 1, 8093 Zürich, Switzerland
| | - Daniel Balderas Barragán
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg, 1, 8093 Zürich, Switzerland
| | - Massimo Morbidelli
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg, 1, 8093 Zürich, Switzerland
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20
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Nicoud L, Lattuada M, Lazzari S, Morbidelli M. Viscosity scaling in concentrated dispersions and its impact on colloidal aggregation. Phys Chem Chem Phys 2015; 17:24392-402. [DOI: 10.1039/c5cp03942h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Viscosity scaling in concentrated dispersions is identified using Brownian dynamics simulations, and its impact on colloidal aggregation is quantified.
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Affiliation(s)
- Lucrèce Nicoud
- Institute for Chemical and Bioengineering
- Department of Chemistry and Applied Biosciences
- ETH Zurich
- CH-8093 Zurich
- Switzerland
| | - Marco Lattuada
- Adolphe Merkle Institute
- University of Fribourg
- Switzerland
| | | | - Massimo Morbidelli
- Institute for Chemical and Bioengineering
- Department of Chemistry and Applied Biosciences
- ETH Zurich
- CH-8093 Zurich
- Switzerland
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21
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Kryven I, Iedema P. Transition into the gel regime for free radical crosslinking polymerisation in a batch reactor. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.06.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Kryven I, Lazzari S, Storti G. Population Balance Modeling of Aggregation and Coalescence in Colloidal Systems. MACROMOL THEOR SIMUL 2014. [DOI: 10.1002/mats.201300140] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ivan Kryven
- Van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Stefano Lazzari
- Department of Chemistry and Applied Biosciences; Institute for Chemical and Bioengineering; ETH Zurich 8093 Zurich Switzerland
| | - Giuseppe Storti
- Department of Chemistry and Applied Biosciences; Institute for Chemical and Bioengineering; ETH Zurich 8093 Zurich Switzerland
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23
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Development of MWD and branching during peroxide modification of High-Density Polyethylene by SEC-MALS and Monte Carlo simulation. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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