1
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Ji Y, Dong B, Zhang Y, Su F, Shao C, Liu C. Investigation on the accelerating effect of two-dimensional boron nitride on the phase transition from form II to I in isotactic polybutene-1. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2
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Zhang X, Gohn A, Mendis G, Buzinkai JF, Weigand SJ, Rhoades AM. Probing Three Distinct Crystal Polymorphs of Melt-Crystallized Polyamide 6 by an Integrated Fast Scanning Calorimetry Chip System. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00811] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaoshi Zhang
- School of Engineering, Penn State Behrend, Erie, Pennsylvania 16563, United States
| | - Anne Gohn
- School of Engineering, Penn State Behrend, Erie, Pennsylvania 16563, United States
| | - Gamini Mendis
- School of Engineering, Penn State Behrend, Erie, Pennsylvania 16563, United States
| | | | - Steven J. Weigand
- DND-CAT Synchrotron Research Center, Northwestern University, APS/ANL Building 432-A004, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Alicyn M. Rhoades
- School of Engineering, Penn State Behrend, Erie, Pennsylvania 16563, United States
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3
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Qian C, Zhao Y, Wang Z, Liu L, Wang D. Probing the difference of crystalline modifications and structural disorder of isotactic polypropylene via high-resolution FTIR spectroscopy. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123722] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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5
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Investigating the Nucleation Effect of DMDBS on Syndiotactic Polypropylene from the Perspective of Chain Conformation. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2447-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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Effect of water and carbonyl sulfide toxins in gas propylene feed in polymerization process on physical properties of polypropylene. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1860-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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7
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Liu Y, Zhang M, Wei H, Wang Z, Zeng J, Qian L. The sunken morphology of poly(lactic acid) stereocomplex spherulite. POLYM INT 2019. [DOI: 10.1002/pi.5861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yanping Liu
- National Center for International Joint Research of Micro‐Nano Molding Technology, School of Mechanics and Engineering ScienceZhengzhou University Zhengzhou China
| | - Mengnan Zhang
- National Center for International Joint Research of Micro‐Nano Molding Technology, School of Mechanics and Engineering ScienceZhengzhou University Zhengzhou China
| | - Hanghang Wei
- National Center for International Joint Research of Micro‐Nano Molding Technology, School of Mechanics and Engineering ScienceZhengzhou University Zhengzhou China
| | - Zhen Wang
- National Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou University Zhengzhou China
| | - Jun Zeng
- National Center for International Joint Research of Micro‐Nano Molding Technology, School of Mechanics and Engineering ScienceZhengzhou University Zhengzhou China
| | - Li Qian
- National Center for International Joint Research of Micro‐Nano Molding Technology, School of Mechanics and Engineering ScienceZhengzhou University Zhengzhou China
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8
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Ji H, Zhou X, Chen X, Zhao H, Wang Y, Zhu H, Shan X, Sha J, Ma Y, Xie L. Effects of Solid-State Stretching on Microstructure Evolution and Physical Properties of Isotactic Polypropylene Sheets. Polymers (Basel) 2019; 11:polym11040618. [PMID: 30960603 PMCID: PMC6523338 DOI: 10.3390/polym11040618] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/22/2019] [Accepted: 03/26/2019] [Indexed: 11/25/2022] Open
Abstract
The microstructure evolution of an isotactic polypropylene (iPP) sheet during solid-state stretching was studied. The transition of the spherulites—cylindrites was evaluated using in-situ two-dimensional wide-angle and small-angle X-ray scattering methods. The crystallinity of stretched iPP sheets was characterized by differential scanning calorimetry. The crystal morphology was observed by means of scanning electron microscopy. It was found that the differences of crystal microstructure of the iPP sheet depended on the stretching strain, which promoted the orientation of molecular chains. Amorphous molecular chains in the spherulites oriented and formed into a mesophase near the yield point, and the partially ordered mesophase was further stretched to form an oriented cylindrite structure after the yield point. The highest relative content of cylindrites appeared at 15% strain. Notably, as the amorphous phase embedded into the lamellae layer, the crystal size decreased with the increase of strain, which indicated that the crystallinity of the stretched iPP sheet was much higher than that of unstretched iPP sheet. The induced cylindrites structure played a more important role in improving the mechanical properties and heat resistance of iPP sheets. Compared with the unstretched iPP sheets, the tensile strength increased by 28%, the notch impact toughness significantly increased by 78%, and the vicat softening point increased from 104 to 112 °C.
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Affiliation(s)
- Huajian Ji
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Xulin Zhou
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Xin Chen
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Haili Zhao
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | | | - Huihao Zhu
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Xiliang Shan
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Jin Sha
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Yulu Ma
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Linsheng Xie
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
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9
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Chen W, Liu D, Li L. Multiscale characterization of semicrystalline polymeric materials by synchrotron radiation X‐ray and neutron scattering. POLYMER CRYSTALLIZATION 2018. [DOI: 10.1002/pcr2.10043] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wei Chen
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film University of Science and Technology of China Hefei China
| | - Dong Liu
- Key Laboratory of Neutron Physics and Institute of Nuclear Physics and Chemistry (INPC) China Academy of Engineering Physics (CAEP) Mianyang China
| | - Liangbin Li
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film University of Science and Technology of China Hefei China
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10
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Syazwan M, Sasaki T. Rapid crystallization and mesophase formation of poly(L-lactic acid) during precipitation from a solution. E-POLYMERS 2018. [DOI: 10.1515/epoly-2017-0247] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractVery rapid crystallization behaviors of poly(L-lactic acid) (PLLA) are observed at room temperature when it is precipitated from a chloroform solution into a large amount of alcohols (non-solvents). The resulting crystalline phase contains both a highly ordered (α) and less ordered (α′) modifications, and the fraction of these phases depends on the alcohols used as the non-solvents: methanol tends to produce the highly ordered phase. The degree of crystallinity tends to be high for lower alcohols. When the precipitation occurs in n-hexane, almost no crystalline phase is formed, but a mesomorphic phase is formed as a precursor to the crystalline phase. The results suggest that the hydroxyl group of alcohols tends to promote the crystallization of PLLA. However, it is found that the precipitation in methanol at lower temperatures, such as 0°C, does not yield any crystalline phase. It is suggested that the present rapid crystallization during precipitation originates from the enhanced mobility of PLLA molecules in a metastable (non-equilibrium) liquid state.
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Affiliation(s)
- Muhammad Syazwan
- Department of Materials Science and Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui, 910 8507, Japan
| | - Takashi Sasaki
- Department of Materials Science and Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui, 910 8507, Japan
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11
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In Situ Synchrotron Radiation Techniques: Watching Deformation-induced Structural Evolutions of Polymers. CHINESE JOURNAL OF POLYMER SCIENCE 2018. [DOI: 10.1007/s10118-018-2169-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Chang B, Schneider K, Patil N, Roth S, Heinrich G. Microstructure characterization in a single isotactic polypropylene spherulite by synchrotron microfocus wide angle X-ray scattering. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.03.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Hiejima Y, Takeda K, Nitta KH. Investigation of the Molecular Mechanisms of Melting and Crystallization of Isotactic Polypropylene by in Situ Raman Spectroscopy. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00229] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yusuke Hiejima
- Department of Chemical
and
Materials Science, Kanazawa University, Kakuma Campus, Kanazawa 920-1192, Japan
| | - Kento Takeda
- Department of Chemical
and
Materials Science, Kanazawa University, Kakuma Campus, Kanazawa 920-1192, Japan
| | - Koh-hei Nitta
- Department of Chemical
and
Materials Science, Kanazawa University, Kakuma Campus, Kanazawa 920-1192, Japan
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14
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Lan Q, Li Y. Mesophase-Mediated Crystallization of Poly(l-lactide): Deterministic Pathways to Nanostructured Morphology and Superstructure Control. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01442] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Qiaofeng Lan
- Ningbo Institute of Materials
Technology and Engineering, Chinese Academy of Sciences (CAS), Ningbo 315201, China
| | - Yong Li
- Ningbo Institute of Materials
Technology and Engineering, Chinese Academy of Sciences (CAS), Ningbo 315201, China
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15
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Influences of molecular weight on the non-isothermal crystallization and melting behavior of β-nucleated isotactic polypropylene with different melt structures. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1784-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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17
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Kang J, Weng G, Chen J, Yang F, Cao Y, Xiang M. Influences of pre-ordered melt structures on the crystallization behavior and polymorphic composition of β-nucleated isotactic polypropylene with different stereo-defect distribution. J Appl Polym Sci 2015. [DOI: 10.1002/app.42632] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jian Kang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University; Chengdu 610065 People's Republic of China
| | - Gengsheng Weng
- Faculty of Materials and Chemical Engineering, Ningbo University; Ningbo 315211 People's Republic of China
| | - Jinyao Chen
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University; Chengdu 610065 People's Republic of China
| | - Feng Yang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University; Chengdu 610065 People's Republic of China
| | - Ya Cao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University; Chengdu 610065 People's Republic of China
| | - Ming Xiang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University; Chengdu 610065 People's Republic of China
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18
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Chen S, Liu Y, Zeng T, Duan N, Wang Z, Wang L, Wang H, Xu C, Kang J. Effects of ultrasound on the conformational and crystallization behavior of isotactic polypropylene polymerized with different Ziegler—Natta catalyst. POLYMER SCIENCE SERIES A 2015. [DOI: 10.1134/s0965545x15050053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Kang J, Chen Z, Yang F, Chen J, Cao Y, Weng G, Xiang M. Understanding the effects of nucleating agent concentration on the polymorphic behavior of β-nucleated isotactic polypropylene with different melt structures. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3605-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Chen W, Li XY, Liu YP, Li J, Zhou WM, Chen L, Li LB. The spatial correlation between crystalline and amorphous orientations of isotactic polypropylene during plastic deformation: An in situ observation with FTIR imaging. CHINESE JOURNAL OF POLYMER SCIENCE 2015. [DOI: 10.1007/s10118-015-1613-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Kang J, Weng G, Chen Z, Chen J, Cao Y, Yang F, Xiang M. New understanding in the influence of melt structure and β-nucleating agents on the polymorphic behavior of isotactic polypropylene. RSC Adv 2014. [DOI: 10.1039/c4ra04231j] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Schematic illustration of the two-stage β-nucleation mechanism of β-iPP nucleated with dual-selective β-nucleating agents and the role of ordered structures.
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Affiliation(s)
- Jian Kang
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, People's Republic of China
| | - Gengsheng Weng
- Faculty of Materials and Chemical Engineering
- Ningbo University
- Ningbo 315211, People's Republic of China
| | - Zhengfang Chen
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, People's Republic of China
| | - Jinyao Chen
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, People's Republic of China
| | - Ya Cao
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, People's Republic of China
| | - Feng Yang
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, People's Republic of China
| | - Ming Xiang
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, People's Republic of China
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22
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Su F, Li X, Zhou W, Zhu S, Ji Y, Wang Z, Qi Z, Li L. Direct Formation of Isotactic Poly(1-butene) Form I Crystal from Memorized Ordered Melt. Macromolecules 2013. [DOI: 10.1021/ma400952r] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fengmei Su
- National Synchrotron Radiation Lab and College of Nuclear
Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Xiangyang Li
- National Synchrotron Radiation Lab and College of Nuclear
Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Weiming Zhou
- National Synchrotron Radiation Lab and College of Nuclear
Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Shanshan Zhu
- National Synchrotron Radiation Lab and College of Nuclear
Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Youxin Ji
- National Synchrotron Radiation Lab and College of Nuclear
Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Zhen Wang
- National Synchrotron Radiation Lab and College of Nuclear
Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Zeming Qi
- National Synchrotron Radiation Lab and College of Nuclear
Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Liangbin Li
- National Synchrotron Radiation Lab and College of Nuclear
Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
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23
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Accelerating crystal–crystal transition in poly(1-butene) with two-step crystallization: An in-situ microscopic infrared imaging and microbeam X-ray diffraction study. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.04.046] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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