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Huang Y, Cheng S. Chain conformations and phase separation in polymer solutions with varying solvent quality. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yisheng Huang
- Department of Physics, Center for Soft Matter and Biological Physics, and Macromolecules Innovation Institute Virginia Polytechnic Institute and State University Blacksburg Virginia USA
| | - Shengfeng Cheng
- Department of Physics, Center for Soft Matter and Biological Physics, and Macromolecules Innovation Institute Virginia Polytechnic Institute and State University Blacksburg Virginia USA
- Department of Mechanical Engineering Virginia Polytechnic Institute and State University Blacksburg Virginia USA
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2
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Kol R, De Somer T, D'hooge DR, Knappich F, Ragaert K, Achilias DS, De Meester S. State-Of-The-Art Quantification of Polymer Solution Viscosity for Plastic Waste Recycling. CHEMSUSCHEM 2021; 14:4071-4102. [PMID: 34324273 PMCID: PMC8519067 DOI: 10.1002/cssc.202100876] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/14/2021] [Indexed: 05/17/2023]
Abstract
Solvent-based recycling is a promising approach for closed-loop recovery of plastic-containing waste. It avoids the energy cost to depolymerize the plastic but still allows to clean the polymer of contaminants and additives. However, viscosity plays an important role in handling the polymer solutions at high concentrations and in the cleaning steps. This Review addresses the viscosity behavior of polymer solutions, available data, and (mostly algebraic) models developed. The non-Newtonian viscosity models, such as the Carreau and Yasuda-Cohen-Armstrong models, pragmatically describe the viscosity of polymer solutions at different concentrations and shear rate ranges. This Review also describes how viscosity influences filtration and centrifugation processes, which are crucial steps in the cleaning of the polymer and includes a polystyrene/styrene case study.
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Affiliation(s)
- Rita Kol
- Laboratory for Circular Process Engineering (LCPE)Department of Green Chemistry and TechnologyGhent UniversityGraaf Karel De Goedelaan 58500KortrijkBelgium
- Laboratory of Polymer Chemistry and TechnologyDepartment of ChemistryAristotle University of Thessaloniki54124ThessalonikiGreece
| | - Tobias De Somer
- Laboratory for Circular Process Engineering (LCPE)Department of Green Chemistry and TechnologyGhent UniversityGraaf Karel De Goedelaan 58500KortrijkBelgium
| | - Dagmar R. D'hooge
- Laboratory for Chemical Technology (LCT) and Centre for Textiles Science and Engineering (CTSE)Department of MaterialsTextiles and Chemical EngineeringFaculty of Engineering and ArchitectureGhent UniversityTechnologiepark 125 and 70a9052ZwijnaardeBelgium
| | - Fabian Knappich
- Process Development for Polymer RecyclingFraunhofer Institute for Process Engineering and Packaging IVVGiggenhauser Straße 3585354FreisingGermany
- Technical University of MunichTUM School of Life Sciences WeihenstephanAlte Akademie 885354FreisingGermany
| | - Kim Ragaert
- Center for Polymer & Material Technologies (CPMT)Department of MaterialsTextiles and Chemical EngineeringFaculty of Engineering & ArchitectureGhent UniversityTechnologiepark 130B-9052ZwijnaardeBelgium
| | - Dimitris S. Achilias
- Laboratory of Polymer Chemistry and TechnologyDepartment of ChemistryAristotle University of Thessaloniki54124ThessalonikiGreece
| | - Steven De Meester
- Laboratory for Circular Process Engineering (LCPE)Department of Green Chemistry and TechnologyGhent UniversityGraaf Karel De Goedelaan 58500KortrijkBelgium
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3
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Yao G, Zhao J, Haruna MA, Wen D. Molecular dynamics insight into viscosity reduction of hydrolysed polyacrylamide by using carbon quantum dots. RSC Adv 2021; 11:26037-26048. [PMID: 34354829 PMCID: PMC8317175 DOI: 10.1039/d1ra03935k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/06/2021] [Indexed: 11/21/2022] Open
Abstract
Hydrolysed polyacrylamide (HPAM) is widely used in many industrial fields where its rheological properties play a leading role. Recent discovery of the reduction of HPAM's viscosity by adding carbon quantum dots (CQDs), however, is controversial to the established theories. By using all atom molecular dynamics simulation with an OPLS-AA force field, this study aims to provide detailed molecular insight into such an uncommon phenomenon. The dynamic structures of the HPAM chain in the presence or absence of CQDs were clearly captured from the molecular aspect. The results reveal that the adsorption of CQD reduces the gyration radius of the HPAM chain, and it is the corresponding hydration effect that leads to the reduction of the viscosity. The amide rather than the carboxylate group along the HPAM chain is dominant in terms of the interaction with the CQDs, and the driven atoms depend on the surface where the polymer is adsorbed.
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Affiliation(s)
- Guice Yao
- School of Aeronautic Science and Engineering, Beihang University Beijing 100191 China
| | - Jin Zhao
- School of General Engineering, Beihang University Beijing 100191 China
| | - Maje Alhaji Haruna
- School of Chemical and Process Engineering, University of Leeds Leeds LS2 9JT UK
| | - Dongsheng Wen
- School of Aeronautic Science and Engineering, Beihang University Beijing 100191 China.,School of General Engineering, Beihang University Beijing 100191 China .,School of Chemical and Process Engineering, University of Leeds Leeds LS2 9JT UK
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4
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Park J, Ramírez-Hernández A, Thapar V, Hur SM. Mesoscale Simulations of Polymer Solution Self-Assembly: Selection of Model Parameters within an Implicit Solvent Approximation. Polymers (Basel) 2021; 13:953. [PMID: 33808863 PMCID: PMC8003785 DOI: 10.3390/polym13060953] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/15/2021] [Accepted: 03/18/2021] [Indexed: 11/16/2022] Open
Abstract
Coarse-grained modeling is an outcome of scientific endeavors to address the broad spectrum of time and length scales encountered in polymer systems. However, providing a faithful structural and dynamic characterization/description is challenging for several reasons, particularly in the selection of appropriate model parameters. By using a hybrid particle- and field-based approach with a generalized energy functional expressed in terms of density fields, we explore model parameter spaces over a broad range and map the relation between parameter values with experimentally measurable quantities, such as single-chain scaling exponent, chain density, and interfacial and surface tension. The obtained parameter map allows us to successfully reproduce experimentally observed polymer solution assembly over a wide range of concentrations and solvent qualities. The approach is further applied to simulate structure and shape evolution in emulsified block copolymer droplets where concentration and domain shape change continuously during the process.
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Affiliation(s)
- Juhae Park
- Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, Korea;
- Alan G. MacDiarmid Energy Research Institute & School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, Korea
| | - Abelardo Ramírez-Hernández
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA
- Department of Physics and Astronomy, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| | - Vikram Thapar
- Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, Korea;
- Alan G. MacDiarmid Energy Research Institute & School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, Korea
| | - Su-Mi Hur
- Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, Korea;
- Alan G. MacDiarmid Energy Research Institute & School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, Korea
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5
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An Y, Singh S, Bejagam KK, Deshmukh SA. Development of an Accurate Coarse-Grained Model of Poly(acrylic acid) in Explicit Solvents. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00615] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yaxin An
- Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | | | - Karteek K. Bejagam
- Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Sanket A. Deshmukh
- Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
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6
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Kanvisi M. Study the effects of nanofiber on the polymer chain orientation using molecular dynamic in the circular duct flow. POLYM ENG SCI 2019. [DOI: 10.1002/pen.24859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mojtaba Kanvisi
- Chemical Engineering Department; Quchan University of Technology; Quchan Iran
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7
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Yao G, Zhao J, Ramisetti SB, Wen D. Atomistic Molecular Dynamic Simulation of Dilute Poly(acrylic acid) Solution: Effects of Simulation Size Sensitivity and Ionic Strength. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03549] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guice Yao
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, U.K
| | - Jin Zhao
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, U.K
| | | | - Dongsheng Wen
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, U.K
- School of Aeronautic Science and Engineering, Beihang University, Beijing, 100191, China
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8
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Modi A, Karim A, Tsige M. Solvent and Substrate Induced Synergistic Ordering in Block Copolymer Thin Films. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00816] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arvind Modi
- College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Alamgir Karim
- College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Mesfin Tsige
- College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
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Pacułt J, Rams-Baron M, Chrząszcz B, Jachowicz R, Paluch M. Effect of Polymer Chain Length on the Physical Stability of Amorphous Drug-Polymer Blends at Ambient Pressure. Mol Pharm 2018; 15:2807-2815. [PMID: 29791165 DOI: 10.1021/acs.molpharmaceut.8b00312] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rational selection of polymers for amorphous drug stabilization is necessary for further successful development of solid dispersion technology. In this paper, we investigate the effect of polymer chain length on the inhibition of amorphous drug recrystallization. To consider this problem, we prepared a drug-polymer blend (in 10:1 drug to polymer ratio) containing bicalutamide (BIC) and polyvinylpyrrolidone (PVP) with different chain lengths K10, K30, and K90. We applied broadband dielectric spectroscopy to compare the molecular dynamics of investigated samples and thoroughly recognize their crystallization tendencies from supercooled liquid state. Despite the lack of differences in molecular dynamics, we noticed significant changes in their crystallization rates. To rationalize such behavior, we performed positron annihilation lifetime spectroscopy measurements. The results showed that the value of free volume was the highest for blend with PVP K90, which at the same time was characterized by the greatest tendency to crystallize. We postulate that the polymer chain, depending on its length, can have different configurations in the space, leading to better or worse sample stabilization. Our results highlight how important is detailed understanding of physical properties of polymers for judicious selection of the best stabilization approach.
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Affiliation(s)
- Justyna Pacułt
- Institute of Physics , University of Silesia , 75 Pulku Piechoty 1A , 41-500 Chorzow , Poland.,Silesian Center for Education and Interdisciplinary Research , 75 Pulku Piechoty 1A , 41-500 Chorzow , Poland
| | - Marzena Rams-Baron
- Institute of Physics , University of Silesia , 75 Pulku Piechoty 1A , 41-500 Chorzow , Poland.,Silesian Center for Education and Interdisciplinary Research , 75 Pulku Piechoty 1A , 41-500 Chorzow , Poland
| | - Beata Chrząszcz
- Institute of Material Science , University of Silesia 75 Pulku Piechoty 1A , 41-500 Chorzow , Poland
| | - Renata Jachowicz
- Faculty of Pharmacy, Department of Pharmaceutical Technology and Biopharmaceutics , Jagiellonian University , Medyczna 9 , 30-688 Kraków , Poland
| | - Marian Paluch
- Institute of Physics , University of Silesia , 75 Pulku Piechoty 1A , 41-500 Chorzow , Poland.,Silesian Center for Education and Interdisciplinary Research , 75 Pulku Piechoty 1A , 41-500 Chorzow , Poland
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Hossain MD, Reid JC, Lu D, Jia Z, Searles DJ, Monteiro MJ. Influence of Constraints within a Cyclic Polymer on Solution Properties. Biomacromolecules 2018; 19:616-625. [DOI: 10.1021/acs.biomac.7b01690] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Md. D. Hossain
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Queensland 4072, Australia
| | - James C. Reid
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Queensland 4072, Australia
| | - Derong Lu
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Queensland 4072, Australia
| | - Zhongfan Jia
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Queensland 4072, Australia
| | - Debra J. Searles
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Queensland 4072, Australia
- School
of Chemical and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Michael J. Monteiro
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Queensland 4072, Australia
- School
of Chemical and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
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11
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Cao Q, You H. Electroosmotic Flow in Mixed Polymer Brush-Grafted Nanochannels. Polymers (Basel) 2016; 8:polym8120438. [PMID: 30974715 PMCID: PMC6431973 DOI: 10.3390/polym8120438] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/10/2016] [Accepted: 12/12/2016] [Indexed: 01/21/2023] Open
Abstract
Mixed polymer brush-grafted nanochannels—where two distinct species of polymers are alternately grafted on the inner surface of nanochannels—are an interesting class of nanostructured hybrid materials. By using a coarse-grained molecular dynamics simulation method, we are able to simulate the electrokinetic transport dynamics of the fluid in such nanochannels as well as the conformational behaviors of the mixed polymer brush. We find that (1) the brush adopts vertically-layered and longitudinally-separated structures due to the coupling of electroosmotic flow (EOF) and applied electric field; (2) the solvent quality affects the brush conformations and the transport properties of the EOF; (3) the EOF flux non-monotonically depends on the grafting density, although the EOF velocity in the central region of the channel monotonically depends on the grafting density.
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Affiliation(s)
- Qianqian Cao
- College of Mechanical and Electrical Engineering, Jiaxing University, Jiaxing 314001, China.
| | - Hao You
- Center for Simulational Physics, Department of Physics and Astronomy, University of Georgia, Athens, GA 30602, USA.
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