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1
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Wang H, Liu D, Cui D, Men Y, Tashiro K. Crystal Structures of Syndiotactic Polymethoxystyrene–Solvent Complexes Derived by X-ray Diffraction Data Analysis and Computer Simulation. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hai Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, China
- Department of Polymer Science and Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Dongtao Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, China
| | - Yongfeng Men
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, China
| | - Kohji Tashiro
- Department of Future Industry-oriented Basic Science and Materials, Toyota Technological Institute, Nagoya 4688511, Japan
- Aichi Synchrotron Radiation Center, Knowledge Hub Aichi, Minami-Yamaguchi, Seto 489-0965, Japan
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2
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Stereocomplex formation and hierarchical structural changes during heating of supramolecular gels obtained by polylactide racemic blends. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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3
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Krishnan VG, Joseph AM, Kuzhichalil Peethambharan S, Gowd EB. Nanoporous Crystalline Aerogels of Syndiotactic Polystyrene: Polymorphism, Dielectric, Thermal, and Acoustic Properties. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01555] [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)
- Vipin G. Krishnan
- Materials Science and Technology Division CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Angel Mary Joseph
- Materials Science and Technology Division CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695019, Kerala, India
| | - Surendran Kuzhichalil Peethambharan
- Materials Science and Technology Division CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - E. Bhoje Gowd
- Materials Science and Technology Division CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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4
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Mechanical Property of Polypropylene Gels Associated with That of Molten Polypropylenes. Gels 2021; 7:gels7030099. [PMID: 34449615 PMCID: PMC8395817 DOI: 10.3390/gels7030099] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/09/2021] [Accepted: 07/20/2021] [Indexed: 01/17/2023] Open
Abstract
This study aims to understand the fundamental mechanical relationship between polypropylene (PP)-gels and solid PPs without solvent through mechanical and thermal analyses, by which the mechanical similarities between molten PPs and PP gels were found, leading to the reliable estimate of the mechanical properties of semi-crystalline gels. The gelation of syndiotactic and isotactic polypropylenes (sPP and iPP) was found when PPs were dissolved in 1,2,3,4-tetrahydronaphthalene (tetralin). Interestingly, it was found that the storage modulus of sPP-gel became higher than that of iPP-gel at low PP concentration (<~40 wt%). The result was distinctly different from the result of neat solid PPs (without solvent), where the modulus of solid sPP is generally significantly lower than that of solid iPP. Such inversion behavior in the mechanical property of semi-crystalline gels had not been reported and discussed before. By further investigation of the storage moduli of neat sPP and iPP, it was found that the storage modulus of sPP became higher than that of iPP above the melting points of PP, which was similar to the behavior of the storage moduli observed in the diluted PP-gels. Such similarity between PP-gels and PP melts was also observed within iPP samples with different molecular weights.
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5
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Wang H, Liu D, Cui D, Men Y, Tashiro K. Effect of Methoxy Side Groups on the Crystal Structures of a Series of Syndiotactic Polymethoxystyrenes as Studied by the X-ray Diffraction Data Analysis. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02577] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hai Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, China
- Department of Polymer Science and Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, P. R. China
| | - Dongtao Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, China
| | - Yongfeng Men
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, China
| | - Kohji Tashiro
- Department of Future Industry-Oriented Basic Science and Materials, Toyota Technological Institute, Nagoya 4688511, Japan
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6
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Sano T, Ebihara H, Sano S, Okabe T, Itagaki H. The ways of connecting crystalline phases having tubular cavities like stringing beads: New conductive polymer composites prepared by the polymerization of aniline in highly oriented ε crystalline phase of syndiotactic polystyrene. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109975] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Kobayashi H, Akazawa S, Urakawa O, Kaneko F, Inoue T. Anisotropic Dynamics of Benzonitrile Confined in δ and ε Clathrate Phases of Syndiotactic Polystyrene. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00799] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hideo Kobayashi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Sho Akazawa
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Osamu Urakawa
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Fumitoshi Kaneko
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Tadashi Inoue
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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8
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Wang H, Wu C, Cui D, Men Y. Lamellar Thickness Dependence of Crystal Modification Selection in the Syndiotactic Polystyrene γ-to-α/β Phase Transition Process. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b01943] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hai Wang
- State Key Laboratory of Polymer
Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China 130022
| | - Chunji Wu
- State Key Laboratory of Polymer
Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China 130022
| | - Dongmei Cui
- State Key Laboratory of Polymer
Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China 130022
| | - Yongfeng Men
- State Key Laboratory of Polymer
Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China 130022
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9
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Endo F, Hotta A. Thermal effects on the strain-induced β to α form crystalline structural transition of solid-state syndiotactic polystyrene. POLYMER 2018. [DOI: 10.1016/j.polymer.2017.12.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Shaiju P, Murthy NS, Gowd EB. Molecular, Crystalline, and Lamellar Length-Scale Changes in the Poly(l-lactide) (PLLA) during Cyclopentanone (CPO) Desorption in PLLA/CPO Cocrystals. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02425] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- P. Shaiju
- Materials
Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, Kerala, India
- Academy of Scientific
and Innovative Research (AcSIR), New Delhi 110 001, India
| | - N. Sanjeeva Murthy
- New
Jersey Center for Biomaterials, Rutgers University, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - E. Bhoje Gowd
- Materials
Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, Kerala, India
- Academy of Scientific
and Innovative Research (AcSIR), New Delhi 110 001, India
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11
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Shaiju P, Bhoje Gowd E. Factors controlling the structure of syndiotactic polystyrene upon the guest exchange and guest extraction processes. POLYMER 2015. [DOI: 10.1016/j.polymer.2014.11.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Influence of host preparation method on the structural phase transitions of syndiotactic polystyrene upon the guest exchange with n-alkanes. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.10.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Mochizuki J, Tokami T, Kusuki S, Sano T, Itagaki H. Physical Gels of Syndiotactic Polystyrene With Fragrant Molecules. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300089] [Citation(s) in RCA: 4] [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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14
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Feng Y, Chen G, Wang J. A convenient quantitative study of polymer mesophase induced by isothermal annealing. RSC Adv 2013. [DOI: 10.1039/c3ra41484a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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15
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Ouchi T, Nagasaka S, Hotta A. β to α Form Transition Observed in the Crystalline Structures of Syndiotactic Polystyrene (sPS). Macromolecules 2011. [DOI: 10.1021/ma200166m] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tetsu Ouchi
- Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan
| | - Suguru Nagasaka
- Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan
| | - Atsushi Hotta
- Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan
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16
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Gowd EB, Tashiro K. Effect of chain-length of n-alkane on solvent-induced crystallization and solvent exchange phenomenon in syndiotactic polystyrene. POLYMER 2011. [DOI: 10.1016/j.polymer.2010.11.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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