1
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Albanese K, Blankenship JR, Quah T, Zhang A, Delaney KT, Fredrickson GH, Bates CM, Hawker CJ. Improved Elastic Recovery from ABC Triblock Terpolymers. ACS POLYMERS AU 2023; 3:376-382. [PMID: 37841950 PMCID: PMC10571101 DOI: 10.1021/acspolymersau.3c00012] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 10/17/2023]
Abstract
The promise of ABC triblock terpolymers for improving the mechanical properties of thermoplastic elastomers is demonstrated by comparison with symmetric ABA/CBC analogs having similar molecular weights and volume fraction of B and A/C domains. The ABC architecture enhances elasticity (up to 98% recovery over 10 cycles) in part through essentially full chain bridging between discrete hard domains leading to the minimization of mechanically unproductive loops. In addition, the unique phase space of ABC triblocks also enables the fraction of hard-block domains to be higher (fhard ≈ 0.4) while maintaining elasticity, which is traditionally only possible with non-linear architectures or highly asymmetric ABA triblock copolymers. These advantages of ABC triblock terpolymers provide a tunable platform to create materials with practical applications while improving our fundamental understanding of chain conformation and structure-property relationships in block copolymers.
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Affiliation(s)
- Kaitlin
R. Albanese
- Department
of Chemistry & Biochemistry, University
of California, Santa Barbara, California 93106, United States
- Materials
Research Laboratory, University of California, Santa Barbara, California 93106, United States
| | - Jacob R. Blankenship
- Department
of Chemistry & Biochemistry, University
of California, Santa Barbara, California 93106, United States
- Materials
Research Laboratory, University of California, Santa Barbara, California 93106, United States
| | - Timothy Quah
- Department
of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
| | - Amy Zhang
- Department
of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
| | - Kris T. Delaney
- Materials
Research Laboratory, University of California, Santa Barbara, California 93106, United States
| | - Glenn H. Fredrickson
- Materials
Research Laboratory, University of California, Santa Barbara, California 93106, United States
- Materials
Department, University of California, Santa Barbara, California 93106, United States
- Department
of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
| | - Christopher M. Bates
- Department
of Chemistry & Biochemistry, University
of California, Santa Barbara, California 93106, United States
- Materials
Research Laboratory, University of California, Santa Barbara, California 93106, United States
- Materials
Department, University of California, Santa Barbara, California 93106, United States
- Department
of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
| | - Craig J. Hawker
- Department
of Chemistry & Biochemistry, University
of California, Santa Barbara, California 93106, United States
- Materials
Research Laboratory, University of California, Santa Barbara, California 93106, United States
- Materials
Department, University of California, Santa Barbara, California 93106, United States
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2
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Tseng YC, Chang HY, Sheng YJ, Tsao HK. Atypical vesicles and membranes with monolayer and multilayer structures formed by graft copolymers with diblock side-chains: nonlamellar structures and curvature-enhanced permeability. SOFT MATTER 2022; 18:7559-7568. [PMID: 36164856 DOI: 10.1039/d2sm01055k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Graft copolymers with diblock side-chains Am(-graft-B3Ay)n in a selective solvent have been reported to self-assemble into vesicles, but the structure is expected to differ distinctly from those of lipid bilayers. Surprisingly, the number of alternating hydrophobic A-block and hydrophilic B-block layers in the vesicle can vary from a monolayer to multilayers such as the hepta-layer, subject to the same copolymer concentration. The area density of the copolymer layer is not uniform across the membrane. This structural difference among different layers is attributed to the neighboring environment and the curvature of the layer. Because of the unusual polymer conformations, nonlamellar structures of polymersomes are formed, and they are much more intricate than those of liposomes. In fact, a copolymer can contribute to a single or two hydrophilic layers, and it can provide up to three hydrophobic layers. The influence of the backbone length (m) and side-chain length (y) and the permeation dynamics are also studied. The thickness of hydrophobic layers is found to increase with increasing side-chain length but is not sensitive to the backbone length. Although the permeation time increases with the layer number for planar membranes, the opposite behavior is observed for spherical vesicles owing to the curvature-enhanced permeability associated with Laplace pressure.
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Affiliation(s)
- Yueh-Chi Tseng
- Department of Chemical and Materials Engineering, National Central University, Jhongli 320, Taiwan.
| | - Hsin-Yu Chang
- Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan.
| | - Yu-Jane Sheng
- Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan.
| | - Heng-Kwong Tsao
- Department of Chemical and Materials Engineering, National Central University, Jhongli 320, Taiwan.
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3
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Loop and Bridge Conformations of ABA Triblock Comb Copolymers: A Conformational Assessment for Molecular Composites. Polymers (Basel) 2022; 14:polym14112301. [PMID: 35683973 PMCID: PMC9183157 DOI: 10.3390/polym14112301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/02/2022] [Accepted: 06/02/2022] [Indexed: 11/22/2022] Open
Abstract
We computationally investigate the conformational behavior, “bridging” chain, between different the phase-separated domains vs “looping” chain on the same domain, for two chain architectures of ABA triblock copolymers, one with a linear architecture (L-TBC) and the other with comb architecture (C-TBC) at various segregation regimes using dissipative particle dynamics (DPD) simulations. The power-law relation between the bridge fraction (Φ) and the interaction parameter (χ) for C-TBC is found to be Φ∼χ−1.6 in the vicinity of the order-disorder transition (χODT), indicating a drastic conversion from the bridge to the loop conformation. When χ further increases, the bridge-loop conversions slow down to have the power law, Φ∼χ−0.18, approaching the theoretical power law Φ∼χ−1/9 predicted in the strong segregation limit. The conformational assessment conducted in the present study can provide a strategy of designing optimal material and processing conditions for triblock copolymer either with linear or comb architecture to be used for thermoplastic elastomer or molecular nanocomposites.
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4
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Steube M, Johann T, Barent RD, Müller AH, Frey H. Rational design of tapered multiblock copolymers for thermoplastic elastomers. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2021.101488] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Sun J, Lee C, Osuji CO, Gopalan P. Synthesis of High Etch Contrast Poly(3-hydroxystyrene)-Based Triblock Copolymers and Self-Assembly of Sub-5 nm Features. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01611] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian Sun
- Department of Materials Science and Engineering, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
| | - Changyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Chinedum O. Osuji
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Padma Gopalan
- Department of Materials Science and Engineering, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
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6
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Miyamori Y, Suzuki J, Aoyama Y, Mihira T, Matsushita Y, Takano A. Triply Helical Giant Domain with Homochirality in a Terpolymer Blend System. ACS Macro Lett 2021; 10:978-983. [PMID: 35549187 DOI: 10.1021/acsmacrolett.1c00307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hexagonally packed coaxial triply helical domains with a mesoscopic length scale in matrices were created from an S1IS2P tetrablock terpolymer/Sh homopolymer blend system, wherein S1, S2, and Sh denote polystyrene, I is polyisoprene, and P represents poly(2-vinylpyridine). Two terpolymers, i.e., S1IS2P-3 (S1/I/S2/P = 0.50/0.17/0.19/0.14, M = 134k) and S1IS2P-4 (S1/I/S2/P = 0.58/0.16/0.10/0.16, M = 173k), were blended with Sh (M = 3k) at various concentrations. In the S1IS2P-3/Sh = 80/20 blend, the helical domain of P (o.d.= 19 nm; h.p. = 34 nm) was displayed by TEM, and the helical I phase (o.d. = 55 nm; i.d. = 29 nm; h.p. = 34 nm) was clearly demonstrated by 3D-TEM tomography. Essentially the same structure was confirmed to be created from the S1IS2P-4/Sh blend. These findings point out that S2 chains fill the gap between the I and P helices, and hence the intermediate S phase also has a helical nature. Moreover, it is worth noting that grains composed of hexagonally packed helices reveal homochirality.
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Affiliation(s)
- Yuta Miyamori
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Jiro Suzuki
- Computing Research Center, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Yoshitaka Aoyama
- JEOL Ltd., 1-2 Musashino, 3-Chome Akishima, Tokyo 196-8558, Japan
| | - Tomohiro Mihira
- JEOL Ltd., 1-2 Musashino, 3-Chome Akishima, Tokyo 196-8558, Japan
| | - Yushu Matsushita
- Toyota Physical and Chemical Research Institute, 41-1, Yokomichi, Nagakute, Aichi 480-1192, Japan
| | - Atsushi Takano
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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7
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Suzuki M, Suzuki J, Takano A, Matsushita Y. Hexagonally Packed Cylindrical Structures with Multiple Satellites from Pentablock Quarterpolymers of the AB 1CB 2D Type and Their Blends with Homopolymers. ACS Macro Lett 2021; 10:359-364. [PMID: 35549065 DOI: 10.1021/acsmacrolett.1c00012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Three kinds of hexagonally packed cylindrical (HPC) structures with 10/8 satellites have been found from a neat pentablock quarterpolymer of the AS1IS2P type, composed of poly(4-vinylbenzyldimethylamine) (A), polystyrene (S), polyisoprene (I), and poly(2-vinylpyridine) (P), and block polymer/homopolymer blends. AS1IS2P-2 (M = 276k, ϕA/ϕS1/ϕI/ϕS2/ϕP = 0.08/0.17/0.12/0.33/0.30) shows HPC of P with 10 single-arrayed I satellites and 6 A subsatellites in the S matrix, where the I/P ratio number is 5, while AS1IS2P-2 (M = 325k, ϕA/ϕS1/ϕI/ϕS2/ϕP = 0.07/0.31/0.14/0.18/0.30)/Sh(M;11k) = 90/10 blend reveals another HPC of P with 10 I satellites, giving an I/P ratio of 6, whose array of I is a single/double mixture. Moreover, AS1IS2P-1/Sh/Ah(M;9k) = 90/5/5 blend represents two enantiomeric HPC packings with 8 double-arrayed I satellites having an I/P ratio of 7, which can be considered to be approximants of two enantiomeric 3.3.3.3.6 Archimedean tilings. These structures were conceived to be formed by the enhanced miscibility of tail A-chains with added homopolymers, resulting in an increase of the (A + S)/I interaction leading to the split of I domains.
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Affiliation(s)
- Makoto Suzuki
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Jiro Suzuki
- Computing Research Center, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Atsushi Takano
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yushu Matsushita
- Toyota Physical and Chemical Research Institute, 41-1, Yokomichi, Nagakute, Aichi 480-1192, Japan
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8
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Jia Q, Yan ZC, Li Y, Liu J, Ding Y, Liu Y, Li J, Chen Y. Synthesis of well-defined di- and triblock acrylic copolymers consisting of hard poly(dicyclopentanyl acrylate) and soft poly(alkyl acrylate) segments by organocatalyzed group transfer polymerization and their glass transition behavior. Polym Chem 2021. [DOI: 10.1039/d1py00192b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Well-defined acrylic block copolymers with hard poly(dicyclopentanyl acrylate) and soft poly(n-alkylacrylate) blocks prepared by GTP are observed to undergo microphase separation by rheometry except for the crystallizable poly(n-dodecyl acrylate) series.
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Affiliation(s)
- Qun Jia
- Institute for Advanced Study
- Shenzhen University
- Shenzhen
- China
| | - Zhi-Chao Yan
- Shenzhen Key Laboratory of Polymer Science and Technology
- Guangdong Research Center for Interfacial Engineering of Functional Materials
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518055
| | - Yanan Li
- Shenzhen Key Laboratory of Polymer Science and Technology
- Guangdong Research Center for Interfacial Engineering of Functional Materials
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518055
| | - Junfeng Liu
- Shenzhen Key Laboratory of Polymer Science and Technology
- Guangdong Research Center for Interfacial Engineering of Functional Materials
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518055
| | - Yuansheng Ding
- Institute for Advanced Study
- Shenzhen University
- Shenzhen
- China
| | - Yujian Liu
- Institute for Advanced Study
- Shenzhen University
- Shenzhen
- China
| | - Jian Li
- Institute for Advanced Study
- Shenzhen University
- Shenzhen
- China
| | - Yougen Chen
- Institute for Advanced Study
- Shenzhen University
- Shenzhen
- China
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9
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Hirschberg V, Faust L, Rodrigue D, Wilhelm M. Effect of Topology and Molecular Properties on the Rheology and Fatigue Behavior of Solid Polystyrene/Polyisoprene Di- and Triblock Copolymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00632] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Valerian Hirschberg
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 18, 76131 Karlsruhe, Germany
- Department of Chemical Engineering and CERMA, Université Laval, 1065 Avenue de la Médecine, Quebec City, Quebec G1V 0A6, Canada
| | - Lorenz Faust
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 18, 76131 Karlsruhe, Germany
| | - Denis Rodrigue
- Department of Chemical Engineering and CERMA, Université Laval, 1065 Avenue de la Médecine, Quebec City, Quebec G1V 0A6, Canada
| | - Manfred Wilhelm
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 18, 76131 Karlsruhe, Germany
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10
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Shen Z, Chen JL, Vernadskaia V, Ertem SP, Mahanthappa MK, Hillmyer MA, Reineke TM, Lodge TP, Siepmann JI. From Order to Disorder: Computational Design of Triblock Amphiphiles with 1 nm Domains. J Am Chem Soc 2020; 142:9352-9362. [PMID: 32392052 DOI: 10.1021/jacs.0c01829] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Using molecular dynamics simulations and transferable force fields, we designed a series of symmetric triblock amphiphiles (or high-χ block oligomers) comprising incompatible sugar-based (A) and hydrocarbon (B) blocks that can self-assemble into ordered nanostructures with sub-1 nm domains and full domain pitches as small as 1.2 nm. Depending on the chain length and block sequence, the ordered morphologies include lamellae, perforated lamellae, and hexagonally perforated lamellae. The self-assembly of these amphiphiles bears some similarities, but also some differences, to those formed by symmetric triblock polymers. In lamellae formed by ABA amphiphiles, the fraction of B blocks "bridging" adjacent polar domains is nearly unity, much higher than that found for symmetric triblock polymers, and the bridging molecules adopt elongated conformations. In contrast, "looping" conformations are prevalent for A blocks of BAB amphiphiles. Above the order-disorder transition temperature, the disordered states are locally well-segregated yet the B blocks of ABA amphiphiles are significantly less stretched than in the lamellar phases. Analysis of both hydrogen-bonded and nonpolar clusters reveals the bicontinuous nature of these network phases. This simulation study furnishes detailed insights into structure-property relationships for mesophase formation on the 1 nm length scale that will aid further miniaturization for numerous applications.
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Affiliation(s)
- Zhengyuan Shen
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455-0132, United States.,Chemical Theory Center, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States
| | - Jingyi L Chen
- Chemical Theory Center, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States.,Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States
| | - Viktoriia Vernadskaia
- Chemical Theory Center, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States
| | - S Piril Ertem
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States
| | - Mahesh K Mahanthappa
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455-0132, United States
| | - Marc A Hillmyer
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States
| | - Theresa M Reineke
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States
| | - Timothy P Lodge
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455-0132, United States.,Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States
| | - J Ilja Siepmann
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455-0132, United States.,Chemical Theory Center, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States.,Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States
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11
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Morita H, Miyamoto A, Kotani M. Recoverably and destructively deformed domain structures in elongation process of thermoplastic elastomer analyzed by graph theory. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122098] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Recent advances in thermoplastic elastomers from living polymerizations: Macromolecular architectures and supramolecular chemistry. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2019.04.002] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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13
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Yang YL, Sheng YJ, Tsao HK. Hybridization of lipids to monolayer and bilayer membranes of triblock copolymers. J Colloid Interface Sci 2019; 544:53-60. [DOI: 10.1016/j.jcis.2019.02.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/29/2019] [Accepted: 02/21/2019] [Indexed: 01/03/2023]
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14
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Tuhin MO, Ryan JJ, Sadler JD, Han Z, Lee B, Smith SD, Pasquinelli MA, Spontak RJ. Microphase-Separated Morphologies and Molecular Network Topologies in Multiblock Copolymer Gels. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00853] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | - J. David Sadler
- Corporate Research & Development, The Procter & Gamble Company, Cincinnati, Ohio 45224, United States
| | - Zexiang Han
- Department of Materials, Imperial College London, London SW7 2AZ, U.K
| | - Byeongdu Lee
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Steven D. Smith
- Corporate Research & Development, The Procter & Gamble Company, Cincinnati, Ohio 45224, United States
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15
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Yang YL, Chen MY, Tsao HK, Sheng YJ. Dynamics of bridge-loop transformation in a membrane with mixed monolayer/bilayer structures. Phys Chem Chem Phys 2018; 20:6582-6590. [PMID: 29450428 DOI: 10.1039/c7cp08107c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Instead of forming a typical bilayer or monolayer membrane, both the bridge (I-shape) and loop (U-shape) conformations coexist in the planar membranes formed by ABA triblock copolymers in a selective solvent. The non-equilibrium and equilibrium relaxation dynamics of polymer conformations are monitored. The non-equilibrium relaxation time depends on the initial composition and increases with an increase in the immiscibility between A and B blocks. The equilibrium composition of the loop-shape polymer is independent of the initial composition and A-B immiscibility. However, the extent of equilibrium composition fluctuations subsides as the A and B blocks become highly incompatible. The influences of the A-B immiscibility on the geometrical, mechanical, and transport properties of the membrane have also been investigated. As the immiscibility increases, the overall membrane thickness and the B block layer thickness (h) increase because of the increment in the molecular packing density. As a result, both the stretching (KA) and bending (KB) moduli grow significantly with the increasing A-B immiscibility. Consistent with the case of typical membranes, the ratio KB/KAh2 = 2 × 10-3 is a constant. Although the lateral diffusivity of polymers is insensitive to immiscibility, the membrane permeability decreases substantially as the A-B immiscibility is increased.
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Affiliation(s)
- Yan-Ling Yang
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan 106, Republic of China.
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16
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Affiliation(s)
- Russell K. W. Spencer
- Department of Chemical Engineering, Department of Physics & Astronomy, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Mark W. Matsen
- Department of Chemical Engineering, Department of Physics & Astronomy, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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17
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Georgopanos P, Lo TY, Ho RM, Avgeropoulos A. Synthesis, molecular characterization and self-assembly of (PS-b-PDMS)n type linear (n = 1, 2) and star (n = 3, 4) block copolymers. Polym Chem 2017. [DOI: 10.1039/c6py01768a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Well-defined linear (n = 1, 2) and star (n = 3, 4) architecture (PS-b-PDMS)n block copolymers were synthesized by anionic polymerization in combination with chlorosilane chemistry. The self-assembly is significantly influenced by entropy constraints for the star samples due to overcrowding.
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Affiliation(s)
- Prokopios Georgopanos
- Department of Materials Science Engineering
- University of Ioannina
- Ioannina 45110
- Greece
- Institute of Polymer Research
| | - Ting-Ya Lo
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Republic of China
| | - Rong-Ming Ho
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Republic of China
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18
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Georgopanos P, Handge UA, Abetz C, Abetz V. Influence of block sequence and molecular weight on morphological, rheological and dielectric properties of weakly and strongly segregated styrene-isoprene triblock copolymers. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.02.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Xiong S, Chapuis YA, Wan L, Gao H, Li X, Ruiz R, Nealey PF. Directed self-assembly of high-chi block copolymer for nano fabrication of bit patterned media via solvent annealing. NANOTECHNOLOGY 2016; 27:415601. [PMID: 27606926 DOI: 10.1088/0957-4484/27/41/415601] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We report the formation of nanoimprint master templates that can be used for the fabrication of bit patterned media (BPM). The template was formed by directed self-assembly, with solvent annealing, of a symmetric ABA triblock copolymer to form perpendicularly oriented lamellae on chemical patterns. We used a high-χ block copolymer, poly(2-vinyl pyridine)-block-polystyrene-block-poly(2-vinyl pyridine) to achieve smaller feature sizes than are possible with polystyrene-block-poly(methyl methacrylate). The work shows that triblock copolymers can provide a large processing window in terms of pitch commensurability. Using block-selective infiltration (atomic layer deposition with sequential long soaking/purge cycles), an alumina composite with high etch resistance was specifically incorporated into the polar and hydrophilic P2VP domains. Subsequently, the surface pattern was successfully transferred into underlying Si substrates by etching with a fluorine-containing plasma to create a nanoimprint master. The line/space pattern of the nanoimprint master met the BPM fabrication requirement of defectivity <10(-3). For demonstration purposes, the nanoimprint master was used to imprint a replica pattern of photoresist on a quartz wafer.
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Affiliation(s)
- Shisheng Xiong
- Institute for molecular engineering, University of Chicago, IL 60637, USA
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20
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Xiong S, Wan L, Ishida Y, Chapuis YA, Craig GSW, Ruiz R, Nealey PF. Directed Self-Assembly of Triblock Copolymer on Chemical Patterns for Sub-10-nm Nanofabrication via Solvent Annealing. ACS NANO 2016; 10:7855-65. [PMID: 27482932 DOI: 10.1021/acsnano.6b03667] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Directed self-assembly (DSA) of block copolymers (BCPs) is a leading strategy to pattern at sublithographic resolution in the technology roadmap for semiconductors and is the only known solution to fabricate nanoimprint templates for the production of bit pattern media. While great progress has been made to implement block copolymer lithography with features in the range of 10-20 nm, patterning solutions below 10 nm are still not mature. Many BCP systems self-assemble at this length scale, but challenges remain in simultaneously tuning the interfacial energy atop the film to control the orientation of BCP domains, designing materials, templates, and processes for ultra-high-density DSA, and establishing a robust pattern transfer strategy. Among the various solutions to achieve domains that are perpendicular to the substrate, solvent annealing is advantageous because it is a versatile method that can be applied to a diversity of materials. Here we report a DSA process based on chemical contrast templates and solvent annealing to fabricate 8 nm features on a 16 nm pitch. To make this possible, a number of innovations were brought in concert with a common platform: (1) assembling the BCP in the phase-separated, solvated state, (2) identifying a larger process window for solvated triblock vs diblock BCPs as a function of solvent volume fraction, (3) employing templates for sub-10-nm BCP systems accessible by lithography, and (4) integrating a robust pattern transfer strategy by vapor infiltration of organometallic precursors for selective metal oxide synthesis to prepare an inorganic hard mask.
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Affiliation(s)
- Shisheng Xiong
- Institute for Molecular Engineering, University of Chicago , Chicago, Illinois 60637, United States
| | - Lei Wan
- HGST, a Western Digital Company , San José, California 95135, United States
| | - Yoshihito Ishida
- Institute for Molecular Engineering, University of Chicago , Chicago, Illinois 60637, United States
| | - Yves-Andre Chapuis
- HGST, a Western Digital Company , San José, California 95135, United States
| | - Gordon S W Craig
- Institute for Molecular Engineering, University of Chicago , Chicago, Illinois 60637, United States
| | - Ricardo Ruiz
- HGST, a Western Digital Company , San José, California 95135, United States
| | - Paul F Nealey
- Institute for Molecular Engineering, University of Chicago , Chicago, Illinois 60637, United States
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21
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Chanda S, Ramakrishnan S. Controlling Interlamellar Spacing in Periodically Grafted Amphiphilic Copolymers. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00162] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Sananda Chanda
- Department
of Inorganic and
Physical Chemistry Indian Institute of Science, Bangalore 560012, India
| | - S. Ramakrishnan
- Department
of Inorganic and
Physical Chemistry Indian Institute of Science, Bangalore 560012, India
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22
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Li W, Delaney KT, Fredrickson GH. Fddd network phase in ABA triblock copolymer melts. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/polb.24022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wei Li
- Materials Research LaboratoryUniversity of CaliforniaSanta Barbara California93106
| | - Kris T. Delaney
- Materials Research LaboratoryUniversity of CaliforniaSanta Barbara California93106
| | - Glenn H. Fredrickson
- Materials Research LaboratoryUniversity of CaliforniaSanta Barbara California93106
- Departments of Chemical Engineering and MaterialsUniversity of CaliforniaSanta Barbara California93106
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23
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24
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Govorun EN, Gavrilov AA, Chertovich AV. Multiblock copolymers prepared by patterned modification: Analytical theory and computer simulations. J Chem Phys 2016; 142:204903. [PMID: 26026461 DOI: 10.1063/1.4921685] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
We describe a special type of multiblock copolymers which are synthesized by a hypothetic procedure of the modification of monomer units in a polymer melt according to a certain geometrical criterion. In particular, we explore the case of lamellar-like structures: the sequence statistics of the resulting multiblock copolymers is described and their ability to self-assemble is studied. It is found that the block-size distribution P(k) for such random copolymers contains a large fraction of short blocks with the asymptotic dependence ∼k(-3/2), where k is the block size. A characteristic feature of such multiblock copolymers is their extremely high block-size polydispersity with the polydispersity index being proportional to the space period of the modification. The morphological behavior of such copolymers is simulated by means of dissipative particle dynamics. A stable self-assembled lamellar structure is observed, but the domain size appears to be sufficiently larger than the initial pattern period.
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Affiliation(s)
- E N Govorun
- Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russia
| | - A A Gavrilov
- Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russia
| | - A V Chertovich
- Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russia
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25
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Li S, Chen J, Xu D, Shi T. Topological constraints of network chains in telechelic associative polymer gels. J Chem Phys 2015; 143:244902. [DOI: 10.1063/1.4938233] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Sijia Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, Changchun 130022, People’s Republic of China
| | - Jizhong Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, Changchun 130022, People’s Republic of China
| | - Donghua Xu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, Changchun 130022, People’s Republic of China
| | - Tongfei Shi
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, Changchun 130022, People’s Republic of China
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26
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Sun Z, Chen Z, Zhang W, Choi J, Huang C, Jeong G, Coughlin EB, Hsu Y, Yang X, Lee KY, Kuo DS, Xiao S, Russell TP. Directed Self-Assembly of Poly(2-vinylpyridine)-b-polystyrene-b-poly(2-vinylpyridine) Triblock Copolymer with Sub-15 nm Spacing Line Patterns Using a Nanoimprinted Photoresist Template. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:4364-4370. [PMID: 26088198 DOI: 10.1002/adma.201501585] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 04/24/2015] [Indexed: 06/04/2023]
Abstract
Low molecular weight P2VP-b-PS-b-P2VP triblock copolymer (poly(2-vinlypyridine)-block-polystyrene-block-poly(2-vinylpyridine)] is doped with copper chloride and microphase separated into lamellar line patterns with ultrahigh area density. Salt-doped P2VP-b-PS-b-P2VP triblock copolymer is self-assembled on the top of the nanoimprinted photoresist template, and metallic nanowires with long-range ordering are prepared with platinum-salt infiltration and plasma etching.
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Affiliation(s)
- Zhiwei Sun
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
| | - Zhenbin Chen
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, Gansu, China
| | - Wenxu Zhang
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
| | - Jaewon Choi
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
| | - Caili Huang
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
| | - Gajin Jeong
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
| | - E Bryan Coughlin
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
| | - Yautzong Hsu
- Seagate Technology, LLD, 47010 Kato Road, Fremont, CA, 94538, USA
| | - XiaoMin Yang
- Seagate Technology, LLD, 47010 Kato Road, Fremont, CA, 94538, USA
| | - Kim Y Lee
- Seagate Technology, LLD, 47010 Kato Road, Fremont, CA, 94538, USA
| | - David S Kuo
- Seagate Technology, LLD, 47010 Kato Road, Fremont, CA, 94538, USA
| | - Shuaigang Xiao
- Seagate Technology, LLD, 47010 Kato Road, Fremont, CA, 94538, USA
| | - Thomas P Russell
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
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27
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Rachmawati R, de Gier HD, Woortman AJJ, Loos K. Synthesis of Telechelic and Three-Arm Polytetrahydrofuran-block-amylose. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Rachmawati Rachmawati
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Hilde D. de Gier
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Albert J. J. Woortman
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Katja Loos
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
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28
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Woloszczuk S, Mineart KP, Spontak RJ, Banaszak M. Dual modes of self-assembly in superstrongly segregated bicomponent triblock copolymer melts. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 91:010601. [PMID: 25679554 DOI: 10.1103/physreve.91.010601] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Indexed: 06/04/2023]
Abstract
While ABC triblock copolymers are known to form a plethora of dual-mode (i.e., order-on-order) nanostructures, bicomponent ABA triblock copolymers normally self-assemble into single morphologies at thermodynamic incompatibility levels up to the strong-segregation regime. In this study, we employ on-lattice Monte Carlo simulations to examine the phase behavior of molecularly asymmetric A(1)BA(2) copolymers possessing chemically identical endblocks differing significantly in length. In the limit of superstrong segregation, interstitial micelles composed of the minority A(2) endblock are observed to arrange into two-dimensional hexagonal arrays along the midplane of B-rich lamellae in compositionally symmetric (50:50 A:B) copolymers. Simulations performed here establish the coupled molecular-asymmetry and incompatibility conditions under which such micelles form, as well as the temperature dependence of their aggregation number. Beyond an optimal length of the A(2) endblock, the propensity for interstitial micelles to develop decreases, and the likelihood for colocation of both endblocks in the A(1)-rich lamellae increases. Interestingly, the strong-segregation theory of Semenov developed to explain the formation of free micelles by diblock copolymers accurately predicts the onset of interstitial micelles confined at nanoscale dimensions between parallel lamellae.
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Affiliation(s)
| | - Kenneth P Mineart
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Richard J Spontak
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA and Department of Materials Science & Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Michal Banaszak
- Faculty of Physics, Adam Mickiewicz University, 61-614 Poznan, Poland
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29
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Tallury SS, Spontak RJ, Pasquinelli MA. Dissipative particle dynamics of triblock copolymer melts: A midblock conformational study at moderate segregation. J Chem Phys 2014; 141:244911. [DOI: 10.1063/1.4904388] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Syamal S. Tallury
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Richard J. Spontak
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Melissa A. Pasquinelli
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, North Carolina 27695, USA
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30
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Tallury SS, Mineart KP, Woloszczuk S, Williams DN, Thompson RB, Pasquinelli MA, Banaszak M, Spontak RJ. Communication: Molecular-level insights into asymmetric triblock copolymers: Network and phase development. J Chem Phys 2014; 141:121103. [DOI: 10.1063/1.4896612] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Syamal S. Tallury
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Kenneth P. Mineart
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
| | | | - David N. Williams
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Russell B. Thompson
- Department of Physics and Astronomy and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Melissa A. Pasquinelli
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Michal Banaszak
- Faculty of Physics, Adam Mickiewicz University, 61-614 Poznan, Poland
| | - Richard J. Spontak
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
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31
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Schmitt AK, Mahanthappa MK. Characteristics of Lamellar Mesophases in Strongly Segregated Broad Dispersity ABA Triblock Copolymers. Macromolecules 2014. [DOI: 10.1021/ma5006233] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Adam K. Schmitt
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Mahesh K. Mahanthappa
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
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32
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Ji-hua X, Run J, Yu-hua Y, Zheng W, Bao-hui L. SIMULATED ANNEALING STUDY OF THE SELF-ASSEMBLY OF END-ANCHORED ASYMMETRIC ABA TRIBLOCK COPOLYMERS IN SELECTIVE SOLVENTS. ACTA POLYM SIN 2013. [DOI: 10.3724/sp.j.1105.2013.13028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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33
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Chantawansri TL, Sirk TW, Sliozberg YR. Entangled triblock copolymer gel: morphological and mechanical properties. J Chem Phys 2013; 138:024908. [PMID: 23320722 DOI: 10.1063/1.4774373] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The morphological and mechanical properties of entangled ABA triblock copolymer gels, where solvent were selective to the midblock, were studied as a function of polymer concentration using a novel dissipative particle dynamics model which includes a modified segmental repulsive potential that restricts chain crossing. Morphological properties, such as micelle size, distance between micelles, and the bridge fraction, were calculated as a function of concentration. Although the micelle size was shown to have a strong dependence on concentration, the bridge fraction and distance between micelles were shown to plateau at moderate concentrations. Deformation under uni-axial tension was also performed to extract the cross-link and entanglement contribution to the elastic modulus. Scaling results qualitatively agree with other theoretical predications.
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Affiliation(s)
- Tanya L Chantawansri
- U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005-5069, USA
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34
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Matsumiya Y, Watanabe H, Takano A, Takahashi Y. Uniaxial Extensional Behavior of (SIS)p-Type Multiblock Copolymer Systems: Structural Origin of High Extensibility. Macromolecules 2013. [DOI: 10.1021/ma3026404] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yumi Matsumiya
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Hiroshi Watanabe
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Atsushi Takano
- Department of Applied Chemistry, Graduate
School of
Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Yoshiaki Takahashi
- Institute
for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Fukuoka 816-8580,
Japan
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35
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Petr M, Katzman BA, DiNatale W, Hammond PT. Synthesis of a New, Low-Tg Siloxane Thermoplastic Elastomer with a Functionalizable Backbone and Its Use as a Rapid, Room Temperature Photoactuator. Macromolecules 2013. [DOI: 10.1021/ma400031z] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael Petr
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
| | - Bat-ami Katzman
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
| | - William DiNatale
- US
Army Research Office, Institute for Soldier Nanotechnologies, Cambridge,
Massachusetts 02139, United States
| | - Paula T. Hammond
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
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36
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Xu J, Yin Y, Wang Z, Jiang R, Li B, Shi AC. Self-assembled morphologies of ABA triblock copolymer brushes in selective solvents. J Chem Phys 2013; 138:114905. [PMID: 23534660 DOI: 10.1063/1.4795578] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A simulated annealing method is used to investigate the self-assembled morphologies of symmetric ABA triblock copolymer brushes, formed by one end of the A-blocks tethered onto a planar surface, immersed in a solvent selective for the middle B-blocks. The morphological dependences of the brushes on polymer grafting density and block lengths are investigated systematically. Phase diagrams for systems with different grafting densities are constructed. The simulation results show that the grafted amphiphilic triblock copolymers can self-assemble to form a variety of complicated morphologies which can be classified in terms of the number of A-rich layers in the morphology. In particular, the formation of the structures with one A-rich layer or called "folded" brush structures is consistent with the speculation from the experimental studies of ABA triblock copolymer brushes. More detailed structures depend on the grafting density and the lengths of the blocks. Furthermore, at a high grafting density, the effects of the lengths of blocks and the interaction energies between different species in the system on the conformation of chains are investigated to illustrate the formation mechanisms of self-assembled morphologies of the amphiphilic triblock copolymer brushes.
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Affiliation(s)
- Jihua Xu
- School of Physics, Nankai University, Tianjin 300071, China
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37
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Pryamitsyn V, Han SH, Kim JK, Ganesan V. Curvature Modification of Block Copolymer Microdomains Using Blends of Block Copolymers with Hydrogen Bonding Interactions. Macromolecules 2012. [DOI: 10.1021/ma301402n] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Victor Pryamitsyn
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712,
United States
| | - Sung Hyun Han
- National
Creative Research Center for Block Copolymer Self-Assembly, Department
of Chemical Engineering, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Jin Kon Kim
- National
Creative Research Center for Block Copolymer Self-Assembly, Department
of Chemical Engineering, Pohang University of Science and Technology, Kyungbuk 790-784, Korea
| | - Venkat Ganesan
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712,
United States
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38
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Matsumiya Y, Chen Q, Uno A, Watanabe H, Takano A, Matsuoka K, Matsushita Y. Dielectric behavior of Styrene–Isoprene (SI) Diblock and SIIS Triblock Copolymers: Global Dynamics of I Blocks in Spherical and Cylindrical Domains Embedded in Glassy S Matrix. Macromolecules 2012. [DOI: 10.1021/ma301453b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yumi Matsumiya
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Quan Chen
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Akiko Uno
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Hiroshi Watanabe
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Atsushi Takano
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603,
Japan
| | - Kohei Matsuoka
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603,
Japan
| | - Yushu Matsushita
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603,
Japan
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39
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Ganesan V, Kumar NA, Pryamitsyn V. Blockiness and Sequence Polydispersity Effects on the Phase Behavior and Interfacial Properties of Gradient Copolymers. Macromolecules 2012. [DOI: 10.1021/ma301136y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Venkat Ganesan
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - N. Arun Kumar
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Victor Pryamitsyn
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
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40
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Ji S, Nagpal U, Liu G, Delcambre SP, Müller M, de Pablo JJ, Nealey PF. Directed assembly of non-equilibrium ABA triblock copolymer morphologies on nanopatterned substrates. ACS NANO 2012; 6:5440-5448. [PMID: 22559146 DOI: 10.1021/nn301306v] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The majority of past work on directed assembly of block copolymers on chemically nanopatterned surfaces (or chemical patterns) has focused on AB diblock copolymers, and the resulting morphologies have generally corresponded to equilibrium states. Here we report a study on directed assembly of ABA triblock copolymers. Directed assembly of thin films of symmetric poly(methyl methacrylate-b-styrene-b-methyl methacrylate) (PMMA-b-PS-b-PMMA) triblock copolymers is shown to be capable of achieving a high degree of perfection, registration, and accuracy on striped patterns having periods, L(s), commensurate with the bulk period of the copolymer, L(o). When L(s) is incommensurate with L(o), the triblock copolymer domains can reach dimensions up to 55% larger or 13% smaller than L(o). The range over which triblock copolymers tolerate departures from a commensurate L(s) is significantly larger than that accessible with the corresponding diblock copolymer material on analogous directed assembly systems. The assembly kinetics of the triblock copolymer is approximately 3 orders of magnitude slower than observed in the diblock system. Theoretically informed simulations are used to interpret our experimental observations; a thermodynamic analysis reveals that triblocks can form highly ordered, non-equilibrium metastable structures that do not arise in the diblock.
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Affiliation(s)
- Shengxiang Ji
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
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41
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Trombly DM, Pryamitsyn V, Ganesan V. Self-Assembly of Diblock Copolymer on Substrates Modified by Random Copolymer Brushes. Macromolecules 2011. [DOI: 10.1021/ma202075d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David M. Trombly
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Victor Pryamitsyn
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Venkat Ganesan
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
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42
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Chantawansri TL, Duncan AJ, Ilavsky J, Stokes KK, Berg MC, Mrozek RA, Lenhart JL, Beyer FL, Andzelm JW. Phase behavior of SEBS triblock copolymer gels. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/polb.22335] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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43
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Wołoszczuk S, Banaszak M. Effects of compositional asymmetry in phase behavior of ABA triblock copolymer melts from Monte Carlo simulation. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2010; 33:343-350. [PMID: 21120573 DOI: 10.1140/epje/i2010-10680-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Accepted: 11/15/2010] [Indexed: 05/30/2023]
Abstract
We simulate ABA triblock copolymer melts using a lattice Monte Carlo method, known as cooperative motion algorithm, probing various degrees of compositional asymmetry. Selected order-disorder transition lines are determined in terms of the segment incompatibility, quantified by product χN , and the triblock asymmetry parameters, α and β. We correlate the results of the simulation with the self-consistent field theory and an experimental study of polyisoprene-polystyrene-polyisoprene triblock melt by Hamersky and coworkers. In particular, we confirm the mean-field prediction that for highly asymmetric triblocks the short A -block is localized in the middle of the B -domain due to an entropic advantage. This results in the middle block relaxation and is consistent with the experimental data indicating that as the relatively short A -blocks are grown into AB diblock, from the B -block side, the order-disorder transition temperature is considerably depressed.
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Affiliation(s)
- S Wołoszczuk
- Faculty of Physics, A. Mickiewicz University, ul. Umultowska 85, 61-614, Poznan, Poland
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Rodwogin MD, Spanjers CS, Leighton C, Hillmyer MA. Polylactide-poly(dimethylsiloxane)-polylactide triblock copolymers as multifunctional materials for nanolithographic applications. ACS NANO 2010; 4:725-732. [PMID: 20112923 DOI: 10.1021/nn901190a] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Highly immiscible block copolymers are attractive materials for applications in nanolithography due to their ability to self-assemble on length scales that are difficult to access by conventional lithography. The incorporation of inorganic domains into such block copolymers provides etch contrast that can potentially reduce processing times and costs in nanolithographic applications. We explored thin films of polylactide-poly(dimethylsiloxane)-polylactide (PLA-PDMS-PLA) triblock copolymers as multifunctional nanolithographic templates. We demonstrate the formation of well-ordered arrays of hexagonally packed PDMS cylinders oriented normal to the substrate, the orthogonal etchability of these cylinders and the PLA matrix, and the formation of etch-resistant domains that can be used as pattern transfer masks.
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Affiliation(s)
- Marc D Rodwogin
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, USA
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Matsen MW. Architectural Effect on the Surface Tension of an ABA Triblock Copolymer Melt. Macromolecules 2009. [DOI: 10.1021/ma902173w] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. W. Matsen
- Department of Mathematics, University of Reading, Whiteknights, Reading RG6 6AX, U.K
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Sliozberg YR, Andzelm JW, Brennan JK, Vanlandingham MR, Pryamitsyn V, Ganesan V. Modeling viscoelastic properties of triblock copolymers: A DPD simulation study. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/polb.21839] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Müller-Buschbaum P, Schulz L, Metwalli E, Moulin JF, Cubitt R. Interface-induced morphology transition in triblock copolymer films swollen with low-molecular-weight homopolymer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:4235-4242. [PMID: 18954149 DOI: 10.1021/la802471p] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The morphology transition due to midblock swelling with low-molecular-weight homopolymer polystyrene of an ABA-type triblock copolymer polyparamethylstyrene-block-polystyrene-block-polyparamethylstyrene at the buried silicon substrate interface is studied as a function of different substrate surface treatments. With grazing incidence small-angle neutron scattering (GISANS), high interface sensitivity is reached. The powderlike oriented lamellar structure in the bulk becomes oriented along the surface normal in the vicinity of the substrate. A transition of the lamellar into a cylinder phase at the polymer-silicon interface is probed with GISANS. The transition is induced by the addition of the homopolymer, but the modification of the short-ranged interface potential of the substrate influences the amount of homopolymer that is necessary for this transition. Without and with 0.1 vol % added homopolymer, the lateral spacing is stretched at the interface as compared to the bulk whereas for a higher added amount of homopolymer no stretching occurs.
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Affiliation(s)
- P Müller-Buschbaum
- Technische Universität München, Physikdepartment E13, James-Franck-Strasse 1, 85747 Garching, Germany.
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Shah M, Ganesan V. Chain bridging in a model of semicrystalline multiblock copolymers. J Chem Phys 2009; 130:054904. [DOI: 10.1063/1.3072339] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Song J, Shi T, Li Y, Chen J, An L. Rigidity effect on phase behavior of symmetric ABA triblock copolymers: A Monte Carlo simulation. J Chem Phys 2008; 129:054906. [DOI: 10.1063/1.2957463] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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