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Maji P, Naskar K. Styrenic block copolymer‐based thermoplastic elastomers in smart applications: Advances in synthesis, microstructure, and structure–property relationships—A review. J Appl Polym Sci 2022. [DOI: 10.1002/app.52942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Purbasha Maji
- Rubber Technology Centre Indian Institute of Technology Kharagpur West Bengal India
| | - Kinsuk Naskar
- Rubber Technology Centre Indian Institute of Technology Kharagpur West Bengal India
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Liu H, Cheng S, Yang Y, Wang C, Zhu S, Zhao F. Strong Hydrophobic and Ultraviolet Reflective Film from Fluorinated Polyisoprene with Microphase Separation via Thiol‐epoxy Click Chemistry. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Huan Liu
- School of Materials Science and Engineering Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education Hainan University Haikou 570228 China
| | - Shihong Cheng
- School of Materials Science and Engineering Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education Hainan University Haikou 570228 China
| | - Yadong Yang
- School of Materials Science and Engineering Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education Hainan University Haikou 570228 China
| | - Chunlin Wang
- School of Materials Science and Engineering Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education Hainan University Haikou 570228 China
| | - Shijiang Zhu
- School of Materials Science and Engineering Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education Hainan University Haikou 570228 China
| | - Fuchun Zhao
- School of Materials Science and Engineering Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education Hainan University Haikou 570228 China
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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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Molecular and Structure-Properties Comparison of an Anionically Synthesized Diblock Copolymer of the PS- b-PI Sequence and Its Hydrogenated or Sulfonated Derivatives. Polymers (Basel) 2021; 13:polym13234167. [PMID: 34883671 PMCID: PMC8659476 DOI: 10.3390/polym13234167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 11/17/2022] Open
Abstract
An approach to obtaining various nanostructures utilizing a well-studied polystyrene-b-poly(isoprene) or PS-b-PI diblock copolymer system through chemical modification reactions is reported. The complete hydrogenation and partial sulfonation to the susceptible carbon double bonds of the PI segment led to the preparation of [polystyrene-b-poly(ethylene-alt-propylene)] as well as [polystyrene-b-poly(sulfonated isoprene-co-isoprene)], respectively. The hydrogenation of the polyisoprene block results in enhanced segmental immiscibility, whereas the relative sulfonation induces an amphiphilic character in the final modified material. The successful synthesis of the pristine diblock copolymer through anionic polymerization and the relative chemical modification reactions were verified using several molecular and structural characterization techniques. The thin film structure–properties relationship was investigated using atomic force microscopy under various conditions such as different solvents and annealing temperatures. Small-angle X-ray scattering was employed to identify the different observed nanostructures and their evolution upon thermal annealing.
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Yan J, Lee B, Smith SD, Spontak RJ. Morphological Studies of Solution-Crystallized Thermoplastic Elastomers with Polyethylene Endblocks and a Random-Copolymer Midblock. Macromol Rapid Commun 2021; 42:e2100442. [PMID: 34490939 DOI: 10.1002/marc.202100442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 08/23/2021] [Indexed: 11/07/2022]
Abstract
Styrenic thermoplastic elastomers (TPEs) in the form of triblock copolymers possessing glassy endblocks and a rubbery midblock account for the largest global market of TPEs worldwide, and typically rely on microphase separation of the endblocks and the subsequent formation of rigid microdomains to ensure satisfactory network stabilization. In this study, the morphological characteristics of a relatively new family of crystallizable TPEs that instead consist of polyethylene endblocks and a random-copolymer midblock composed of styrene and (ethylene-co-butylene) moieties are investigated. Copolymer solutions prepared at logarithmic concentrations in a slightly endblock-selective solvent are subjected to crystallization under different time and temperature conditions to ascertain if copolymer self-assembly is directed by endblock crystallization or vice versa. According to transmission electron microscopy, semicrystalline aggregates develop at the lowest solution concentration examined (0.01 wt%), and the size and population of crystals, which dominate the copolymer morphologies, are observed to increase with increasing aging time. Real-space results are correlated with small- and wide-angle X-ray scattering to elucidate the concurrent roles of endblock crystallization and self-assembly of these unique TPEs in solution.
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Affiliation(s)
- Jiaqi Yan
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, 27695, USA
| | - Byeongdu Lee
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Steven D Smith
- Corporate Research and Development, The Procter and Gamble Company, Cincinnati, OH, 45224, USA
| | - Richard J Spontak
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, 27695, USA.,Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, 27695, USA
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von Tiedemann P, Yan J, Barent RD, Spontak RJ, Floudas G, Frey H, Register RA. Tapered Multiblock Star Copolymers: Synthesis, Selective Hydrogenation, and Properties. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00645] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Philipp von Tiedemann
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Graduate School Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
- Department of Chemical and Biological Engineering, Princeton University, Olden Street, Princeton, 08544 New Jersey, United States
| | - Jiaqi Yan
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, 27695 North Carolina, United States
| | - Ramona D. Barent
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Max Planck Graduate Center, Forum Universitatis 2, 55122 Mainz, Germany
| | - Richard J. Spontak
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, 27695 North Carolina, United States
- Department of Materials Science & Engineering, North Carolina State University, Raleigh, 27695 North Carolina, United States
| | - George Floudas
- Department of Physics, University of Ioannina, P.O. Box 1186, 45110 Ioannina, Greece
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Holger Frey
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Richard A. Register
- Department of Chemical and Biological Engineering, Princeton University, Olden Street, Princeton, 08544 New Jersey, United States
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Hampu N, Hillmyer MA. Molecular Engineering of Nanostructures in Disordered Block Polymers. ACS Macro Lett 2020; 9:382-388. [PMID: 35648549 DOI: 10.1021/acsmacrolett.0c00036] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A series of symmetric poly(methyl methacrylate-stat-styrene)-block-polylactide (P(MMA-s-S)-b-PLA) diblock terpolymers with nearly constant molar masses yet varying block interaction parameters were synthesized as a model system to probe the extent and utility of composition fluctuations in the disordered state. A combination of differential scanning calorimetry, dynamic mechanical analysis, and small-angle X-ray scattering revealed that a broad range of segregation strengths ranging from what we ascribe to essentially a mean-field disordered to a fluctuating disordered to an ordered system could be readily obtained by tuning the molar fraction of styrene in these diblocks. The P(MMA-s-S)-b-PLA diblocks were annealed above their order-disorder transition temperatures (TODT) and rapidly quenched to low temperatures to trap the disordered state via vitrification, as confirmed by scanning electron microscopy. Small-angle X-ray scattering and N2 sorption analysis post-removal of PLA demonstrated that a transition from a very weakly structured, mean-field-like melt to a bicontinuous fluctuating disordered state occurred with increasing segregation strength. This work demonstrates that the extent of microphase segregation as well as the domain continuity of the disordered block polymer melt can be tuned using both synthetic design and thermal stimuli, guiding the design of disordered block polymers with targeted nanostructures that have potential technological utility.
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Affiliation(s)
- Nicholas Hampu
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Marc A. Hillmyer
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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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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