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Sabattié EFD, Tasche J, Wilson MR, Skoda MWA, Hughes A, Lindner T, Thompson RL. Predicting oligomer/polymer compatibility and the impact on nanoscale segregation in thin films. SOFT MATTER 2017; 13:3580-3591. [PMID: 28443905 DOI: 10.1039/c7sm00048k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Compatibility between oligomers and polymers was systematically assessed using differential scanning calorimetry (DSC) and was correlated with similarity in saturation and solubility parameter. These measurements enabled validation of detailed volume of mixing calculations using Statistical Association Fluid Theory (SAFT-γ Mie) and molecular dynamics (MD) simulations, which can be used to predict behaviour beyond the experimentally accessible conditions. These simulations confirmed that squalane is somewhat more compatible with poly(isoprene), "PI" than poly(butadiene), "PB", and further enabled prediction of the temperature dependence of compatibility. Surface and interfacial segregation of a series of deuterated oligomers was quantified in rubbery polymer films: PI, PB and hydrogenated poly(isoprene) "hPI". A striking correlation was established between surface wetting transition and mixtures of low compatibility, such as oligo-dIB in PB or PI. Segregation was quantified normal to the surface by ion beam analysis and neutron reflectometry and in some cases lateral segregation was observable by AFM. While surface segregation is driven by disparity in molecular weight in highly compatible systems this trend reverses as critical point is approached, and surface segregation increases with increasing oligomer molecular weight.
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Affiliation(s)
- Elise F D Sabattié
- Department of Chemistry, Durham University, Science Site, Durham DH1 3LE, UK. and Procter & Gamble, German Innovation Center (GIC), Sulzbacher Str. 40-50, 65824, Schwalbach am Taunus, Germany
| | - Jos Tasche
- Department of Chemistry, Durham University, Science Site, Durham DH1 3LE, UK.
| | - Mark R Wilson
- Department of Chemistry, Durham University, Science Site, Durham DH1 3LE, UK.
| | - Maximilian W A Skoda
- STFC ISIS Facility, Rutherford Appleton Laboratories, Chilton, Didcot, OX110QX, UK
| | - Arwel Hughes
- STFC ISIS Facility, Rutherford Appleton Laboratories, Chilton, Didcot, OX110QX, UK
| | - Torsten Lindner
- Procter & Gamble, German Innovation Center (GIC), Sulzbacher Str. 40-50, 65824, Schwalbach am Taunus, Germany
| | - Richard L Thompson
- Department of Chemistry, Durham University, Science Site, Durham DH1 3LE, UK.
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Qiao Y, Ma W, Theyssen N, Chen C, Hou Z. Temperature-Responsive Ionic Liquids: Fundamental Behaviors and Catalytic Applications. Chem Rev 2017; 117:6881-6928. [DOI: 10.1021/acs.chemrev.6b00652] [Citation(s) in RCA: 211] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yunxiang Qiao
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Wenbao Ma
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Nils Theyssen
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Chen Chen
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Zhenshan Hou
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
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