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Zhang XX, Liu Q, Yin J, Hong R, Huang FW, Yang HR, Zhong GJ, Liu D, Xu JZ, Li ZM. Promoted Formation of α Crystals in the Polymorph Selection of Syndiotatic Polystyrene under the Coupling of Pressure, Flow, and Temperature. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xi-Xi Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Qian Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jin Yin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Rui Hong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Fu-Wen Huang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Hao-Ran Yang
- State Laboratory of Surface and Interface Science and Technology, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Gan-Ji Zhong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Dong Liu
- Key Laboratory of Neutron Physics, Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621999, China
| | - Jia-Zhuang Xu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Zhong-Ming Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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Bai W, Guan J, Liu H, Cheng S, Zhao F, Liao S. Microstructure and Lamellae Phase of Raw Natural Rubber via Spontaneous Coagulation Assisted by Sugars. Polymers (Basel) 2021; 13:polym13244306. [PMID: 34960857 PMCID: PMC8703785 DOI: 10.3390/polym13244306] [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: 11/21/2021] [Revised: 12/05/2021] [Accepted: 12/07/2021] [Indexed: 11/16/2022] Open
Abstract
Natural rubber (NR) as a renewable biopolymer is often produced by acid coagulation of fresh natural latex collected from Hevea brasiliensis. However, this traditional process is facing a huge economic and environmental challenge. Compared with the acid coagulation, spontaneous or microorganism coagulation is an ecofriendly way to obtain NR with excellent performance. To clarify the influence of different sugars on NR quality, several sugars were used to assist the coagulation process. Influence of different sugars on microstructure and cold crystallization were examined by 1H NMR, DSC, etc. The results indicated that sugars exhibit different biological activity on terminal components of fresh field latex and can influence the resultant molecular structure and basic properties. Brown sugar exhibits higher metabolic activity and is inclined to decompose the protein and phospholipids crosslinking compared with other sugars. The larger molecular weight of sugar molecule is beneficial for the formation of the stable α lamellae phase and higher overall degree of crystallization.
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Li X, Ding J, Chen P, Zheng K, Chen L, Tian X. A new Fourier transformation method for SAXS of polymer lamellar crystals. CrystEngComm 2020. [DOI: 10.1039/d0ce00157k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interface distribution function is composed mainly of the self-interference item of the first interface F11, the interference term of the first and the second interfaces F12, and the interference term of the first and the third interfaces F13.
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Affiliation(s)
- Xiangyang Li
- Institute of Applied Technology
- CAS Key Laboratory of Photovoltaic and Energy Conservation Materials
- Hefei Institutes of Physical Science
- Chinese Academy of Sciences
- Hefei 230088
| | - Jianjun Ding
- Institute of Applied Technology
- CAS Key Laboratory of Photovoltaic and Energy Conservation Materials
- Hefei Institutes of Physical Science
- Chinese Academy of Sciences
- Hefei 230088
| | - Pujing Chen
- Institute of Applied Technology
- CAS Key Laboratory of Photovoltaic and Energy Conservation Materials
- Hefei Institutes of Physical Science
- Chinese Academy of Sciences
- Hefei 230088
| | - Kang Zheng
- Institute of Applied Technology
- CAS Key Laboratory of Photovoltaic and Energy Conservation Materials
- Hefei Institutes of Physical Science
- Chinese Academy of Sciences
- Hefei 230088
| | - Lin Chen
- Institute of Applied Technology
- CAS Key Laboratory of Photovoltaic and Energy Conservation Materials
- Hefei Institutes of Physical Science
- Chinese Academy of Sciences
- Hefei 230088
| | - Xingyou Tian
- Institute of Applied Technology
- CAS Key Laboratory of Photovoltaic and Energy Conservation Materials
- Hefei Institutes of Physical Science
- Chinese Academy of Sciences
- Hefei 230088
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Lu M, Zhao X, Chen L, Xiong X, Zhang J, Mai K, Wu C. Nucleation effect on polymorphism of melt-crystallized syndiotactic polystyrene. POLYMER 2011. [DOI: 10.1016/j.polymer.2010.11.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Su CH, Jeng U, Chen SH, Cheng CY, Lee JJ, Lai YH, Su WC, Tsai JC, Su AC. Thermodynamic Characterization of Polymorphs in Bulk-Crystallized Syndiotactic Polystyrene via Small/Wide-Angle X-ray Scattering and Differential Scanning Calorimetry. Macromolecules 2009. [DOI: 10.1021/ma900384b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C. H. Su
- National Synchrotron Radiation Research Center, Science-based Industrial Park, Hsinchu 300, Taiwan
- Institute of Materials Science and Engineering, National Sun Yat-sen University, Kaohsiung 824, Taiwan
| | - U. Jeng
- National Synchrotron Radiation Research Center, Science-based Industrial Park, Hsinchu 300, Taiwan
| | - S. H. Chen
- Department of Materials Science and Engineering, National Dong Hwa University, Hualien 974, Taiwan
| | - C.-Y. Cheng
- National Synchrotron Radiation Research Center, Science-based Industrial Park, Hsinchu 300, Taiwan
| | - J.-J. Lee
- National Synchrotron Radiation Research Center, Science-based Industrial Park, Hsinchu 300, Taiwan
| | - Y.-H. Lai
- National Synchrotron Radiation Research Center, Science-based Industrial Park, Hsinchu 300, Taiwan
- Department of Chemistry, Tunghai University, Taichung, 407, Taiwan
| | - W. C. Su
- Department of Civil Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
| | - J. C. Tsai
- Department of Chemical Engineering, National Chung Cheng University, Chiayi 621, Taiwan
| | - A. C. Su
- Institute of Materials Science and Engineering, National Sun Yat-sen University, Kaohsiung 824, Taiwan
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300, Taiwan
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Isothermal crystallization, melting behavior and crystalline morphology of syndiotactic polystyrene blends with highly-impact polystyrene. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.03.078] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Wang C, Lin CC, Chu CP. Crystallization and morphological features of syndiotactic polystyrene induced from glassy state. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.10.122] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ma W, Yu J, He J. Stability of crystal forms of syndiotactic polystyrene correlated with their formation in different media having different solubility parameters. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.09.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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