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Zhou J, Yang J, Yang K, Zhang B, Hu C, Chen X. Conformational behaviors of syndiotactic polystyrene in chloroform revealed by intrinsic fluorescence technique. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.05.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Berghmans H, Aerts L, Buyse K, Deberdt F, Roels T, De Rudder J, Vereecke S. Reversible gels of synthetic polymers: Phase relations, formation mechanisms and structure. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19981021127] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Li W, Wu P. Study on the crystalline structure transition of syndiotactic polystyrene film during heat treatment by two-dimensional infrared correlation spectroscopy. APPLIED SPECTROSCOPY 2009; 63:926-931. [PMID: 19678990 DOI: 10.1366/000370209788964494] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The crystal structure transition of syndiotactic polystyrene film from the helical conformation to the more stable planar zigzag conformation during a heating process was studied using Fourier transform infrared (FT-IR) spectroscopy in combination with two-dimensional (2D) correlation analysis and perturbation-correlation moving-window 2D analysis. The sequence of different conformations during the transition was investigated by analyzing two-dimensional FT-IR correlation spectra in the spectral ranges of 800-700 cm(-1) and 600-500 cm(-1). It was observed that the conformation of delta helical changes prior to gamma helical, and the gamma helical phase is faster than the alpha' planar zigzag phase. By utilizing the 2D asynchronous correlation spectra, the 744 cm(-1) band, which is usually incorporated in the broad 750 cm(-1) band, can now be uniquely attributed as the alpha' zigzag configuration for the first time. Furthermore, by employing thermal perturbation, the shorter helical segments consisting of m = 7-12 and m = 12-20 monomeric units were disturbed in a shorter time than the longer helical segments m = 20-30 during the heating process.
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Affiliation(s)
- Weizhen Li
- The Key Laboratory of Molecular Engineering of Polymers (Ministry of Education) and Department of Macromolecular Science and the Laboratory of Advanced Materials, Fudan University, Shanghai 200433, P.R. China
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Fang J, Kiran E. Gelation, crystallization and morphological transformations of syndiotactic polystyrene in acetophenone and acetophenone + carbon dioxide mixtures at high pressures. J Supercrit Fluids 2009. [DOI: 10.1016/j.supflu.2008.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Fang J, Kiran E. Thermoreversible Gelation and Polymorphic Transformations of Syndiotactic Polystyrene in Toluene and Toluene + Carbon Dioxide Fluid Mixtures at High Pressures. Macromolecules 2008. [DOI: 10.1021/ma801511c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jian Fang
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - Erdogan Kiran
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
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Gao X, Liu R, Huang Y, Starykov O, Oppermann W. Clathrate (δ) Form Crystal Transitions of Syndiotactic Polystyrene in Atactic Polystyrene Networks. Macromolecules 2008. [DOI: 10.1021/ma701988w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xia Gao
- State Key Laboratory of Polymer Physics & Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; Beijing Centre of Physical and Chemical Analysis, Beijing Academy of Sciences and Technology, Beijing 100089, China; and Institute of Physical Chemistry, Technical University of Clausthal, Arnold-Sommerfeld Strasse 4, 38678 Clausthal-Zellerfeld, Germany
| | - Ruigang Liu
- State Key Laboratory of Polymer Physics & Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; Beijing Centre of Physical and Chemical Analysis, Beijing Academy of Sciences and Technology, Beijing 100089, China; and Institute of Physical Chemistry, Technical University of Clausthal, Arnold-Sommerfeld Strasse 4, 38678 Clausthal-Zellerfeld, Germany
| | - Yong Huang
- State Key Laboratory of Polymer Physics & Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; Beijing Centre of Physical and Chemical Analysis, Beijing Academy of Sciences and Technology, Beijing 100089, China; and Institute of Physical Chemistry, Technical University of Clausthal, Arnold-Sommerfeld Strasse 4, 38678 Clausthal-Zellerfeld, Germany
| | - Oleksiy Starykov
- State Key Laboratory of Polymer Physics & Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; Beijing Centre of Physical and Chemical Analysis, Beijing Academy of Sciences and Technology, Beijing 100089, China; and Institute of Physical Chemistry, Technical University of Clausthal, Arnold-Sommerfeld Strasse 4, 38678 Clausthal-Zellerfeld, Germany
| | - Wilhelm Oppermann
- State Key Laboratory of Polymer Physics & Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; Beijing Centre of Physical and Chemical Analysis, Beijing Academy of Sciences and Technology, Beijing 100089, China; and Institute of Physical Chemistry, Technical University of Clausthal, Arnold-Sommerfeld Strasse 4, 38678 Clausthal-Zellerfeld, Germany
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van Gestel J, Berghmans H. Clathrate Formation between Syndiotactic Polystyrene and Aromatic Compounds from Solution in Decalin. Polym Bull (Berl) 2006. [DOI: 10.1007/s00289-006-0623-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Sun YS, Woo E, Wu MC, Ho RM. WAXD and FTIR spectroscopy studies on phase behavior of syndiotactic polystyrene/1,1,2,2-tetrachloroethane complexes. POLYMER 2003. [DOI: 10.1016/s0032-3861(03)00563-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gowd EB, Nair SS, Ramesh C. Crystalline Transitions of the Clathrate (δ) Form of Syndiotactic Polystyrene during Heating: Studies Using High-Temperature X-ray Diffraction. Macromolecules 2002. [DOI: 10.1021/ma020640h] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- E. Bhoje Gowd
- Division of Polymer Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
| | - Smitha S. Nair
- Division of Polymer Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
| | - C. Ramesh
- Division of Polymer Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
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Tashiro K, Yoshioka A. Molecular Mechanism of Solvent-Induced Crystallization of Syndiotactic Polystyrene Glass. 2. Detection of Enhanced Motion of the Amorphous Chains in the Induction Period of Crystallization. Macromolecules 2001. [DOI: 10.1021/ma011509x] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kohji Tashiro
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Akiko Yoshioka
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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Rastogi S, Goossens JGP, Lemstra PJ. An In Situ SAXS/WAXS/Raman Spectroscopy Study on the Phase Behavior of Syndiotactic Polystyrene (sPS)/Solvent Systems: Compound Formation and Solvent (Dis)ordering. Macromolecules 1998. [DOI: 10.1021/ma9712920] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. Rastogi
- Eindhoven Polymer Laboratories/The Dutch Polymer Institute (DPI), Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - J. G. P. Goossens
- Eindhoven Polymer Laboratories/The Dutch Polymer Institute (DPI), Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - P. J. Lemstra
- Eindhoven Polymer Laboratories/The Dutch Polymer Institute (DPI), Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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