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Solubilization Behavior of Homopolymer in Its Blend with the Block Copolymer Displaying the Feature of Lower Critical Ordering Transition. Polymers (Basel) 2021; 13:polym13193415. [PMID: 34641230 PMCID: PMC8512391 DOI: 10.3390/polym13193415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/01/2021] [Accepted: 10/04/2021] [Indexed: 11/16/2022] Open
Abstract
Blending with homopolymer offers a facile approach for tuning the microdomain morphology of block copolymer, provided that the homopolymer chains are uniformly solubilized in the corresponding microdomain to swell the junction point separation. Here we studied the solubilization behavior of poly(4-vinyl pyridine) homopolymer (h-P4VP) in the lamellar microdomain formed by its blends with a poly(ethylene oxide)-block-poly(4-vinyl pyridine) (PEO-b-P4VP) showing the feature of lower critical ordering transition (LCOT) in terms of weaker segregation strength at lower temperature. We revealed that, while the conventional criterion of homopolymer-to-block molecular weight ratio for attaining uniform solubilization was applicable to LCOT blend, there was an excess swelling of junction point separation upon the addition of homopolymer, leading to a decrease of interdomain distance with increasing homopolymer composition. This anomalous phenomenon was attributed to the reduction of interfacial free energy due to the incorporation of P4VP homopolymer into the microdomain interface.
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Lee J, Wang T, Shin K, Cho J. High-pressure neutron scattering and random-phase approximation analysis of a molten Baroplastic diblock copolymer. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.05.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zong J, Wang Q. On the order-disorder transition of compressible diblock copolymer melts. J Chem Phys 2015; 143:184903. [DOI: 10.1063/1.4934992] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Jing Zong
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado 80523-1370, USA
| | - Qiang Wang
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado 80523-1370, USA
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6
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Lee Y, Lee H, Kim SW, Park S, Kim E, Han YS, Ryu DY. Baroplastic behavior of miscible block copolymer blends. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.11.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Affiliation(s)
- Junhan Cho
- Department of Polymer Science and Engineering; Center for Photofunctional Energy Materials; Dankook University; 152 Jukjeon-ro, Suji-Gu Yongin-Si Gyeonggi-Do 448-701 Korea
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Lee DH, Lee H, Lee Y, Kim Y, Ryu DY. Enthalpic and Volumetric Changes at Phase Transitions of Polystyrene-b-poly(alkyl methacrylate) Copolymers and Their Pressure Dependence. Macromolecules 2014. [DOI: 10.1021/ma402535w] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dong Hyun Lee
- Department
of Polymer Science and Engineering, Dankook University, Yongin, Gyeonggi-do 448-701, Korea
| | - Hoyeon Lee
- Department
of Chemical and Biomolecular Engineering, Yonsei University, Seoul 120-749, Korea
| | - Yonghoon Lee
- Department
of Chemical and Biomolecular Engineering, Yonsei University, Seoul 120-749, Korea
| | - Yoonkeun Kim
- Department
of Chemical and Biomolecular Engineering, Yonsei University, Seoul 120-749, Korea
| | - Du Yeol Ryu
- Department
of Chemical and Biomolecular Engineering, Yonsei University, Seoul 120-749, Korea
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9
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Valavi M, Shirazian S, Pour AF, Ziary M. Calculation of the Density and Activity of Water in ATPS Systems for Separation of Biomolecules. J SOLUTION CHEM 2013. [DOI: 10.1007/s10953-013-0040-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Cho J. Superposition in Flory-Huggins χ and Interfacial Tension for Compressible Polymer Blends. ACS Macro Lett 2013; 2:544-549. [PMID: 35581815 DOI: 10.1021/mz400111x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We investigate theoretically the response of interfacial tension γ for compressible polymer blends to thermodynamic variables. Helfand's self-consistent field theory is first extended to be combined with an off-lattice equation-of-state model to describe compressibility. Typical incompatible blends reveal that the effects of temperature and pressure (T-P) on γ are superposed into a single curve by a dimensionless pressure variable through the superposition in Flory-Huggins χ and density. In the case of polymer blends with strong compressibility difference, γ shows an anomaly upon pressurization with no T-P superposition, even though χ still follows the superposition.
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Affiliation(s)
- Junhan Cho
- Department of Polymer Science & Engineering and Center for Photofunctional Energy Materials, Dankook University, 126 Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Korea
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11
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Anomaly in SANS χ for polydisperse polystyrene-b-poly(isooctyl acrylate). POLYMER 2012. [DOI: 10.1016/j.polymer.2012.03.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Chen W, Wei X, Balazs AC, Matyjaszewski K, Russell TP. Phase Behavior and Photoresponse of Azobenzene-Containing Polystyrene-block-poly(n-butyl methacrylate) Block Copolymers. Macromolecules 2011. [DOI: 10.1021/ma101982u] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Chen
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Xinyu Wei
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Anna C. Balazs
- Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Thomas P. Russell
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
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Chen W, Wang JY, Wei X, Xu J, Balazs AC, Matyjaszewski K, Russell TP. UV-enhanced Ordering in Azobenzene-Containing Polystyrene-block-Poly(n-Butyl Methacrylate) Copolymer Blends. Macromolecules 2010. [DOI: 10.1021/ma102005s] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Chen
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Jia-Yu Wang
- Department of Chemistry, The University of Chicago, Chicago, Illinois 60637, United States
| | - Xinyu Wei
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Ji Xu
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Anna C. Balazs
- Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Thomas P. Russell
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
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Ahn H, Ryu DY, Kim Y, Kwon KW, Lee J, Cho J. Phase Behavior of Polystyrene-b-poly(methyl methacrylate) Diblock Copolymer. Macromolecules 2009. [DOI: 10.1021/ma901313a] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hyungju Ahn
- Department of Chemical and Biomolecular Engineering, Yonsei University, 134 Sinchon-dong, Seodaemun-gu, Seoul 120-749, Korea
| | - Du Yeol Ryu
- Department of Chemical and Biomolecular Engineering, Yonsei University, 134 Sinchon-dong, Seodaemun-gu, Seoul 120-749, Korea
| | - Youngmin Kim
- Department of Electrical Engineering, Hongik University, 72-1 Sangsoo-dong, Mapo-gu, Seoul 121-791, Korea
| | - Kyung Wook Kwon
- Department of Polymer Science and Engineering, and Center for Photofunctional Energy Materials, Dankook University, 126, Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Korea
| | - Jumi Lee
- Department of Polymer Science and Engineering, and Center for Photofunctional Energy Materials, Dankook University, 126, Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Korea
| | - Junhan Cho
- Department of Polymer Science and Engineering, and Center for Photofunctional Energy Materials, Dankook University, 126, Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Korea
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Ahn H, Naidu S, Ryu DY, Cho J. Phase Behavior of a Weakly Interacting Polystyrene and Poly(n-hexyl methacrylate) System: Evidence for the Coexistence of UCST and LCST. Macromol Rapid Commun 2009; 30:469-74. [DOI: 10.1002/marc.200800646] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2008] [Revised: 11/25/2008] [Accepted: 11/27/2008] [Indexed: 11/12/2022]
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16
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Ruiz de Luzuriaga A, Grande HJ, Pomposo JA. Phase diagrams in compressible weakly interacting all-polymer nanocomposites. J Chem Phys 2009; 130:084905. [DOI: 10.1063/1.3078248] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Li C, Li GH, Moon HC, Lee DH, Kim JK, Cho J. Effect of neutral solvent on the phase behavior of polystyrene-block-poly(n-butyl methacrylate) copolymers. Macromol Res 2007. [DOI: 10.1007/bf03218946] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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19
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Hwang SW, Kim E, Shin C, Kim JH, Ryu DY, Park S, Chang T, Kim JK. Unusual Sensitivity of Closed-Loop Phase Behavior to Chain Size and Distribution. Macromolecules 2007. [DOI: 10.1021/ma071314a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Jin Kon Kim
- National Creative Research Initiative Center for Block Copolymer Self-Assembly, Department of Chemical Engineering and Polymer Research Institute, Pohang University of Science and Technology, Gyeongbuk 790-784, Korea
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Xu H, Liu H, Hu Y. The Effect of Pressure on the Microphase Separation of Diblock Copolymer Melts Studied by Dynamic Density Functional Theory Based on Equation of State. MACROMOL THEOR SIMUL 2007. [DOI: 10.1002/mats.200600078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Kim HJ, Kim SB, Kim JK, Jung YM. Two-Dimensional Heterospectral Correlation Analysis of Wide-Angle X-ray Scattering and Infrared Spectroscopy for Specific Chemical Interactions in Weakly Interacting Block Copolymers. J Phys Chem B 2006; 110:23123-9. [PMID: 17107153 DOI: 10.1021/jp0638282] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We investigated, via two-dimensional heterospectral correlation analysis of wide-angle X-ray scattering (WAXS) and infrared (IR) spectroscopy, the specific chemical interactions existing in weakly interacting polystyrene-block-poly(n-pentyl methacrylate) copolymers (PS-PnPMA). PS-PnPMA was shown to exhibit a closed-loop-type phase behavior, where, upon heating, a lower disorder-to-order transition (LDOT) was found at lower temperatures, and an upper order-to-disorder transition (UODT) was observed at higher temperatures. The specific interaction between the PS and PnPMA blocks mainly arises from the dipole in the benzene ring of PS and the induced dipole in the PnPMA due to cluster formation with a size of 1 approximately 2 nm. We found that the synchronous 2D WAXS-IR heterospectral correlation spectrum of the ordered state was completely different from that in the two disordered states. The CH group of the main chains of PS and PnPMA did not contribute to the cluster formation in the two disordered states, indicating that the main chains of PS and PnPMA blocks were randomly distributed in the two disordered states. However, only the C=C group in the PS block contributed to the cluster at a disordered state below the LDOT, whereas both the C-C-O group in PnPMA and the entire phenyl ring and C=C group in PS contributed to cluster formation at another disordered state above the UODT. Thus, the probability that PS (and PnPMA) chains were located at their own neighboring chains at one disordered state above the UODT is larger than that at another disordered state below the LDOT.
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Affiliation(s)
- Hye Jeong Kim
- National Creative Research Center for Block Copolymer Self-Assembly, and Departments of Chemical Engineering and Chemistry, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
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Spiro JG, Yang J, Zhang JX, Winnik MA, Rharbi Y, Vavasour JD, Whitmore MD, Jérôme R. Experimental and Theoretical Investigation of the Lamellar Structure of a Styrene−Butyl Methacrylate Diblock Copolymer by Fluorescence Resonance Energy Transfer, Small-Angle X-ray Scattering, and Self-Consistent-Field Simulations. Macromolecules 2006. [DOI: 10.1021/ma0526037] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | - Yahya Rharbi
- Laboratoire de Rhéologie, BP53-Domaine Universitaire, 38041 Grenoble Cedex 9, France, and Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, Canada M5S 3H6
| | | | | | - Robert Jérôme
- Center for Education and Research on Macromolecules, University of Liège, Sart-Tilman B6, 4000 Liège, Belgium
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Lavery KA, Sievert JD, Watkins JJ, Russell TP, Ryu DY, Kim JK. Influence of Carbon Dioxide Swelling on the Closed-Loop Phase Behavior of Block Copolymers. Macromolecules 2006. [DOI: 10.1021/ma060329q] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kristopher A. Lavery
- Polymer Science and Engineering Department, University of Massachusetts, Amherst, Massachusetts 01003
| | - James D. Sievert
- Polymer Science and Engineering Department, University of Massachusetts, Amherst, Massachusetts 01003
| | - James J. Watkins
- Polymer Science and Engineering Department, University of Massachusetts, Amherst, Massachusetts 01003
| | - Thomas P. Russell
- Polymer Science and Engineering Department, University of Massachusetts, Amherst, Massachusetts 01003
| | - Du Yeol Ryu
- Department of Chemical Engineering, Yonsei University, Seoul 120-749, Korea
| | - Jin Kon Kim
- National Creative Research Initiative Center for Block Copolymer Self-Assembly, Department of Chemical Engineering and Polymer Research Institute, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
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24
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Kim HJ, Kim SB, Kim JK, Jung YM, Ryu DY, Lavery KA, Russell TP. Phase Behavior of a Weakly Interacting Block Copolymer by Temperature-Dependent FTIR Spectroscopy. Macromolecules 2005. [DOI: 10.1021/ma052259d] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Young Mee Jung
- Department of Chemistry, Kangwon National University, Chunchon 200-701, Korea
| | - Du Yeol Ryu
- Department of Chemical Engineering, Yonsei University, Seoul 120-749, Korea
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25
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Browarzik D. Calculation of the Phase Behavior of Polystyrene+Poly(N‐Pentyl Methacrylate) Blends. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2005. [DOI: 10.1080/10601320500204858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ryu DY, Lee DH, Jang J, Kim JK, Lavery KA, Russell TP. Complex Phase Behavior of a Weakly Interacting Binary Polymer Blend. Macromolecules 2004. [DOI: 10.1021/ma049329l] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Cho J. Concentration fluctuation effects on the phase behavior of compressible diblock copolymers. J Chem Phys 2004; 120:9831-40. [PMID: 15268000 DOI: 10.1063/1.1724819] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A Hartree analysis has been performed for compressible diblock copolymers of incompatible pairs to investigate the concentration fluctuation effects on their microphase separation behavior. The free energy in the Hartree analysis is obtained from the self-consistent correction to its mean-field cousin, which was recently formulated for such copolymer systems. The mean-field phase diagram is shown to be significantly affected by the fluctuation effects as the copolymer chain size N is lowered. An effective interaction chi(cRPA), which carries not only the change in contact interactions but also the compressibility difference between block components, plays a key role in understanding of the phase behavior and the pressure responses of various thermodynamic transitions for the copolymers with finite sizes. In particular, a symmetric copolymer at disorder-to-lamella transition is found to satisfy Nchi(cRPA)(q*)=10.495+41.022N(-1/3) when evaluated at a characteristic wave number q* for ordered microphases.
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Affiliation(s)
- Junhan Cho
- Department of Polymer Science and Engineering, and Hyperstructured Organic Materials Research Center, Dankook University, San-8, Hannam-dong, Yongsan-gu, Seoul 140-714, Korea
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Ryu DY, Lee DH, Jeong U, Yun SH, Park S, Kwon K, Sohn BH, Chang T, Kim JK, Russell TP. Closed-Loop Phase Behavior of Polystyrene-block-poly(n-pentyl methacrylate) Copolymers with Various Block Length Ratios. Macromolecules 2004. [DOI: 10.1021/ma049746y] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Du Yeol Ryu
- Departments of Chemical Engineering, Materials Science and Engineering, and Chemistry and Polymer Research Institute, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Dong Hyun Lee
- Departments of Chemical Engineering, Materials Science and Engineering, and Chemistry and Polymer Research Institute, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Unyong Jeong
- Departments of Chemical Engineering, Materials Science and Engineering, and Chemistry and Polymer Research Institute, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Sang-Hyun Yun
- Departments of Chemical Engineering, Materials Science and Engineering, and Chemistry and Polymer Research Institute, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Soojin Park
- Departments of Chemical Engineering, Materials Science and Engineering, and Chemistry and Polymer Research Institute, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Kyoon Kwon
- Departments of Chemical Engineering, Materials Science and Engineering, and Chemistry and Polymer Research Institute, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Byeong-Hyeok Sohn
- Departments of Chemical Engineering, Materials Science and Engineering, and Chemistry and Polymer Research Institute, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Taihyun Chang
- Departments of Chemical Engineering, Materials Science and Engineering, and Chemistry and Polymer Research Institute, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Jin Kon Kim
- Departments of Chemical Engineering, Materials Science and Engineering, and Chemistry and Polymer Research Institute, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Thomas P. Russell
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
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Voutsas EC, Pappa GD, Boukouvalas CJ, Magoulas K, Tassios DP. Miscibility in Binary Polymer Blends: Correlation and Prediction. Ind Eng Chem Res 2004. [DOI: 10.1021/ie0306269] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Epaminondas C. Voutsas
- Laboratory of Thermodynamics & Transport Phenomena, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Str., Zografou 15780, Athens, Greece
| | - Georgia D. Pappa
- Laboratory of Thermodynamics & Transport Phenomena, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Str., Zografou 15780, Athens, Greece
| | - Christos J. Boukouvalas
- Laboratory of Thermodynamics & Transport Phenomena, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Str., Zografou 15780, Athens, Greece
| | - Kostis Magoulas
- Laboratory of Thermodynamics & Transport Phenomena, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Str., Zografou 15780, Athens, Greece
| | - Dimitrios P. Tassios
- Laboratory of Thermodynamics & Transport Phenomena, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Str., Zografou 15780, Athens, Greece
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RamachandraRao VS, Vogt BD, Gupta RR, Watkins JJ. Effect of carbon dioxide sorption on the phase behavior of weakly interacting polymer mixtures: Solvent-induced segregation in deuterated polybutadiene/polyisoprene blends. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/polb.10633] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Cho J. A Landau free energy for diblock copolymers with compressibility difference between blocks. J Chem Phys 2003. [DOI: 10.1063/1.1599278] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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33
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Cho J, Kwon YK. Mean-field and fluctuation correction analyses for a diblock copolymer melt exhibiting an immiscibility loop. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/polb.10560] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ryu DY, Lee DJ, Kim JK, Lavery KA, Russell TP, Han YS, Seong BS, Lee CH, Thiyagarajan P. Effect of hydrostatic pressure on closed-loop phase behavior of block copolymers. PHYSICAL REVIEW LETTERS 2003; 90:235501. [PMID: 12857269 DOI: 10.1103/physrevlett.90.235501] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2003] [Indexed: 05/24/2023]
Abstract
The effect of hydrostatic pressure (P) on closed-loop phase behavior of deuterated polystyrene-block-poly(n-pentyl methacrylate) copolymers [dPS-PnPMA] was investigated by using small-angle neutron scattering and birefringence. For P<20.7 bar, dPS-PnPMA exhibited a lower disorder-to-order transition temperature (T(LDOT)) at 175 degrees C, and then an upper order-to-disorder transition temperature (T(UODT)) at 255 degrees C. With increasing pressure both T(LDOT) and T(UODT) were markedly changed, where dT(LDOT)/dP was 725 degrees C/kbar and dT(UODT)/dP was -725 degrees C/kbar. These are consistent with predictions by the Clausius-Clapeyron equation using measured values of the volume and enthalpy changes of both transitions. The large pressure coefficients imply that the closed-loop phase behavior observed for PS-PnPMA is an entropic-driven phase transition.
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Affiliation(s)
- Du Yeol Ryu
- Department of Chemical Engineering and Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
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35
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Vogt BD, RamachandraRao VS, Gupta RR, Lavery KA, Francis TJ, Russell TP, Watkins JJ. Phase Behavior of Polystyrene-block-poly(n-alkyl methacrylate)s Dilated with Carbon Dioxide. Macromolecules 2003. [DOI: 10.1021/ma0300544] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bryan D. Vogt
- Departments of Chemical Engineering and Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
| | - Vijayakumar S. RamachandraRao
- Departments of Chemical Engineering and Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
| | - Ravi R. Gupta
- Departments of Chemical Engineering and Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
| | - Kristopher A. Lavery
- Departments of Chemical Engineering and Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
| | - Timothy J. Francis
- Departments of Chemical Engineering and Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
| | - Thomas P. Russell
- Departments of Chemical Engineering and Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
| | - James J. Watkins
- Departments of Chemical Engineering and Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
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36
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Ruzette AVG, Mayes AM, Pollard M, Russell TP, Hammouda B. Pressure Effects on the Phase Behavior of Styrene/n-Alkyl Methacrylate Block Copolymers. Macromolecules 2003. [DOI: 10.1021/ma021394c] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | - B. Hammouda
- Cold Neutron Research Facility, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
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37
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Ryu DY, Jeong U, Lee DH, Kim J, Youn HS, Kim JK. Phase Behavior of Deuterated Polystyrene-block-poly(n-pentyl methacrylate) Copolymers. Macromolecules 2003. [DOI: 10.1021/ma026002g] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Du Yeol Ryu
- Department of Chemical Engineering and Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Unyong Jeong
- Department of Chemical Engineering and Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Dong Hyun Lee
- Department of Chemical Engineering and Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Jehan Kim
- Department of Chemical Engineering and Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Hwa Shik Youn
- Department of Chemical Engineering and Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Jin Kon Kim
- Department of Chemical Engineering and Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
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38
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Ryu DY, Park MS, Chae SH, Jang J, Kim JK, Russell TP. Phase Behavior of Polystyrene and Poly(n-pentyl methacrylate) Blend. Macromolecules 2002. [DOI: 10.1021/ma025615q] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Du Yeol Ryu
- Department of Chemical Engineering, Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Min Soo Park
- Department of Chemical Engineering, Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Seung Hun Chae
- Department of Chemical Engineering, Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Jin Jang
- Department of Chemical Engineering, Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Jin Kon Kim
- Department of Chemical Engineering, Polymer Research Institute, Electronic and Computer Engineering Divisions, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Thomas P. Russell
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
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39
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Ryu DY, Jeong U, Kim JK, Russell TP. Closed-loop phase behaviour in block copolymers. NATURE MATERIALS 2002; 1:114-117. [PMID: 12618826 DOI: 10.1038/nmat724] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2002] [Accepted: 08/05/2002] [Indexed: 05/24/2023]
Abstract
Closed-loop phase diagrams are known in systems with specific intermolecular interactions. In weakly interacting systems, however, such behaviour has never been observed. Here, diblock copolymers formed from polystyrene covalently linked to poly (n-pentylmethacrylate), P(S-b-nPMA), which have only weak segmental interactions, are shown to exhibit a closed-loop phase behaviour over a narrow range of molecular weight. The endothermic transitions from the disordered to ordered and back to the disordered state, as a function of increasing temperature, are dominantly entropic in origin. The morphology and rheological properties of P(S-b-nPMA) undergo characteristic changes at the transitions. Whereas the disorder-to-order transition temperature increases with decreasing molecular weight, the order-to-disorder transition temperature decreases. At a limiting molecular weight, the closed-loop vanishes and no ordering occurs. These findings provide quantitative insight into an elusive transition in weakly interacting multicomponent systems.
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Affiliation(s)
- Du Yeol Ryu
- Department of Chemical Engineering and Polymer Research Institute, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
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40
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Affiliation(s)
- Junhan Cho
- Department of Polymer Science and Engineering, and Hyperstructured Organic Materials Research Center, Dankook University, San-8, Hannam-dong, Yongsan-gu, Seoul 140-714, Korea
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41
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Vogt BD, Watkins JJ. Phase Behavior of Diblock Copolymers Dilated with Light Alkanes: Influence of Solvent Compressibility on Upper and Lower Ordering Transitions. Macromolecules 2002. [DOI: 10.1021/ma012154k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bryan D. Vogt
- Department of Chemical Engineering, University of Massachusetts, Amherst, Massachusetts 01003
| | - James J. Watkins
- Department of Chemical Engineering, University of Massachusetts, Amherst, Massachusetts 01003
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42
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Erukhimovich I, Ermoshkin AV. Phase diagrams classification of thermoreversibly associating systems with due regard for mesoscopic cyclization effects. J Chem Phys 2002. [DOI: 10.1063/1.1412866] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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43
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Aranovich GL, Donohue MD. A simple lattice model for phase transitions in block copolymers. J Chem Phys 2001. [DOI: 10.1063/1.1391452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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44
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Cho J. Analysis of Compressible Diblock Copolymer Melts That Microphase Separate upon Cooling. Macromolecules 2001. [DOI: 10.1021/ma0100910] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Junhan Cho
- Department of Polymer Science and Engineering, and Hyperstructured Organic Materials Research Center, Dankook University, San-8, Hannam-dong, Yongsan-gu, Seoul 140-714, Korea
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45
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Ruzette AVG, Banerjee P, Mayes AM, Russell TP. A simple model for baroplastic behavior in block copolymer melts. J Chem Phys 2001. [DOI: 10.1063/1.1361072] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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46
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Ruzette AVG, Mayes AM. A Simple Free Energy Model for Weakly Interacting Polymer Blends. Macromolecules 2001. [DOI: 10.1021/ma000712+] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Affiliation(s)
- Junhan Cho
- Department of Polymer Science and Engineering, Dankook University, San-8, Hannam-dong, Yongsan-gu, Seoul 140-714, Korea
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48
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Cho J. Analysis of Phase Separation in Compressible Polymer Blends and Block Copolymers. Macromolecules 2000. [DOI: 10.1021/ma990610n] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Junhan Cho
- Department of Polymer Science and Engineering, Dankook University, San-8, Hannam-dong, Yongsan-gu, Seoul 140-714, Korea
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49
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Kiselev SB, Ely JF. Crossover SAFT Equation of State: Application for Normal Alkanes. Ind Eng Chem Res 1999. [DOI: 10.1021/ie990387i] [Citation(s) in RCA: 113] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. B. Kiselev
- Chemical Engineering and Petroleum Refining Department, Colorado School of Mines, Golden, Colorado 80401-1887
| | - J. F. Ely
- Chemical Engineering and Petroleum Refining Department, Colorado School of Mines, Golden, Colorado 80401-1887
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50
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Watkins JJ, Brown GD, RamachandraRao VS, Pollard MA, Russell TP. Phase Separation in Polymer Blends and Diblock Copolymers Induced by Compressible Solvents. Macromolecules 1999. [DOI: 10.1021/ma9906377] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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