1
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Janani H, Marxsen SF, Eck M, Mecking S, Tashiro K, Alamo RG. Polymorphism and Stretch-Induced Transformations of Sustainable Polyethylene-Like Materials. ACS Macro Lett 2024:201-206. [PMID: 38261790 DOI: 10.1021/acsmacrolett.3c00639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Herein we demonstrate that polyethylene-like bioderived, biodegradable, and fully recyclable unbranched aliphatic polyesters, such as PE-2,18, develop hexagonal crystal structures upon quenching from the melt to temperatures <∼50 °C and orthorhombic-like packing at higher quenching temperatures or after isothermal crystallization. Both crystal types are layered. While all-trans CH2 packing characterizes the structure of the orthorhombic-like form, there is significant conformational disorder in the staggered long CH2 sequences of the hexagonal crystals. On heating, the hexagonal crystals transform to the orthorhombic type at ∼60 °C via melt recrystallization, but no change is apparent during heating samples with the orthorhombic form up to the melting point (∼95 °C). The hexagonal structure is of interest not only because it develops under very rapid quenching from the melt but also because under uniaxial tensile deformation it undergoes a stretch-induced transformation to the orthorhombic structure. Compared to deformation of orthorhombic specimens that maintain the same crystal type, such transformation results in larger strains and enhanced strain hardening, thus representing a desired toughening mechanism for this type of polyethylene-like materials.
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Affiliation(s)
- Hamed Janani
- FAMU-FSU College of Engineering, Department of Chemical and Biomedical Engineering, 2525 Pottsdamer Street, Tallahassee, Florida 32310, United States
| | - Stephanie F Marxsen
- FAMU-FSU College of Engineering, Department of Chemical and Biomedical Engineering, 2525 Pottsdamer Street, Tallahassee, Florida 32310, United States
| | - Marcel Eck
- Department of Chemistry, University of Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Stefan Mecking
- Department of Chemistry, University of Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Kohji Tashiro
- Aichi Synchrotron Radiation Center, Knowledge Hub Aichi, Minami-Yamaguchi, Seto 489-0965, Japan
| | - Rufina G Alamo
- FAMU-FSU College of Engineering, Department of Chemical and Biomedical Engineering, 2525 Pottsdamer Street, Tallahassee, Florida 32310, United States
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2
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The Structural Evolution and Mechanical Properties of Semi-Aromatic Polyamide 12T after Stretching. Polymers (Basel) 2022; 14:polym14224805. [PMID: 36432932 PMCID: PMC9693562 DOI: 10.3390/polym14224805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 10/30/2022] [Accepted: 11/01/2022] [Indexed: 11/11/2022] Open
Abstract
The development of semi-aromatic polyamides with excellent mechanical properties has always been a popular research avenue. In this work, the semi-aromatic polyamide 12T (PA12T) with the maximum tensile strength of 465.5 MPa was prepared after stretching at 210 °C 4.6 times. Wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS) were used to characterize the structural evolution of semi-aromatic polyamide 12T (PA12T) after stretching at different stretching temperatures and stretching ratios. The formation mechanism of this change in mechanical properties was investigated from different aspects of the aggregated structure such as crystal morphology, crystal orientation and crystallinity. The relevant characterization results show that the crystal structure, crystal orientation and crystallinity of PA12T were the highest when the sample was pre-stretched at 210 °C, which is crucial for improving the mechanical properties of PA12T. These findings will provide important guidance for the preparation of polymer materials with excellent mechanical properties.
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3
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Chen J, Schneider K, Heinrich G. In-Situ Synchrotron X-ray Study on the Structure Variation of Morphology-Identified Injection-Molded β-Nucleated iPP under Tensile Deformation. Polymers (Basel) 2021; 13:polym13213730. [PMID: 34771288 PMCID: PMC8587524 DOI: 10.3390/polym13213730] [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: 09/24/2021] [Revised: 10/20/2021] [Accepted: 10/24/2021] [Indexed: 11/25/2022] Open
Abstract
The deformation behavior of semi-crystalline polymers is strongly dependent on the morphology formed during processing. In this study, in-situ synchrotron X-ray was firstly used to identify the morphological distributions of injection-molded isotactic polypropylene (iPP) with different concentrations of β-nucleating agent. It was found that under relatively high concentration of β-nucleating agent (i.e., ≥0.03 wt.%), the outer region (skin and shear region) of the iPP was dominated by mainly highly oriented α-phase as well as certain amount γ-phase, while the core region was rich in β-crystals with little if any orientation. The addition of the β-nucleating agent was beneficial for the formation of lamellae with large lamellar stacking distance in the shear layer. Then the synchrotron X-ray was applied to study the structure variation of those morphology-identified samples under tensile deformation. It was found that voids and cavities along the stretching direction existed in the deformed iPP samples and their volume increased with increasing concentration of β-nucleating agent. The increased volume of void and cavity was associated with the β to α phase transition, which mainly occurred at the core region. In addition, upon stretching crystalline fragmentation and rearrangement took place following the formation of thinner lamellae.
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Affiliation(s)
- Jianhong Chen
- Fujian Provincial Key Laboratory of Functional Materials and Applications, Xiamen University of Technology, Ligong Road 600, Xiamen 361024, China
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany;
- Correspondence: (J.C.); (K.S.)
| | - Konrad Schneider
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany;
- Correspondence: (J.C.); (K.S.)
| | - Gert Heinrich
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany;
- Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik, Technische Universität Dresden, Zellescher Weg 17, 01062 Dresden, Germany
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4
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Ji H, Wang Y, Zhu H, Ni H, Ma Y, Xie L. Research on a strengthening method and mechanism of expanding polypropylene pipe. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Huajian Ji
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Yu Wang
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Huihao Zhu
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Hui Ni
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Yulu Ma
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Linsheng Xie
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
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5
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Yang F, Yang F, Xiang M, Wu T. Preparation of highly oriented β polypropylene and its pore formation mechanism during stretching. POLYMER CRYSTALLIZATION 2021. [DOI: 10.1002/pcr2.10183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fan Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering Sichuan University Chengdu China
| | - Feng Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering Sichuan University Chengdu China
| | - Ming Xiang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering Sichuan University Chengdu China
| | - Tong Wu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering Sichuan University Chengdu China
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6
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Comparison of the Structural Evolution of β Polypropylene during the Sequential and Simultaneous Biaxial Stretching Process. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2534-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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7
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Zhang D, Ding L, Yang F, Lan F, Cao Y, Xiang M. Structural evolution of β-iPP with different supermolecular structures during the simultaneous biaxial stretching process. Polym J 2020. [DOI: 10.1038/s41428-020-00430-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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8
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Ding C, Yang Y, Liu L, Wu GG, Yin B, Yang MB. Surfactant-assisted β-NA supramolecular self-assembly in mini injection molding PP composite. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Lin X, Spencer P, Gong M, Coates P. Highly improved
PP
/
CNTs
sheet prepared by tailoring crystallization morphology through solid‐phase die drawing and multilayer hot compression. POLYMER CRYSTALLIZATION 2020. [DOI: 10.1002/pcr2.10137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiang Lin
- School of Chemistry and Biological EngineeringUniversity of Science and Technology Beijing Beijing China
| | - Paul Spencer
- Polymer Interdisciplinary Research Centre, Faculty of Engineering and InformaticsUniversity of Bradford Bradford UK
| | - Min Gong
- School of Chemistry and Biological EngineeringUniversity of Science and Technology Beijing Beijing China
| | - Phil Coates
- Polymer Interdisciplinary Research Centre, Faculty of Engineering and InformaticsUniversity of Bradford Bradford UK
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10
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Lyu D, Sun Y, Lu Y, Liu L, Chen R, Thompson G, Caton-Rose F, Coates P, Wang Y, Men Y. Suppressed Cavitation in Die-Drawn Isotactic Polypropylene. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dong Lyu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yingying Sun
- ExxonMobil Asia Pacific Research & Development Co., Ltd., 1099 Zixing Road, Minhang District, Shanghai 200241, P. R. China
| | - Ying Lu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, P. R. China
| | - Lingzhi Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, P. R. China
| | - Ran Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, P. R. China
| | - Glen Thompson
- Polymer Interdisciplinary Research Centre, University of Bradford, Bradford BD7 1DP, U.K
| | - Fin Caton-Rose
- Polymer Interdisciplinary Research Centre, University of Bradford, Bradford BD7 1DP, U.K
| | - Phil Coates
- Polymer Interdisciplinary Research Centre, University of Bradford, Bradford BD7 1DP, U.K
| | - Yan Wang
- Key Laboratory of High Performance Plastics (Jilin University), Ministry of Education, National & Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yongfeng Men
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
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11
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Yang Y, Wu G, Ding C, Zhang Y, Yang W, Yang M. Formation of oriented β‐transcrystals induced by self‐assembly of nucleating agent and its micropores formation during uniaxial stretching. POLYMER CRYSTALLIZATION 2020. [DOI: 10.1002/pcr2.10129] [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)
- Yu Yang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Gao‐Gao Wu
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Chao Ding
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Ya Zhang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Wei Yang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Ming‐Bo Yang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
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12
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Deformation-Induced Crystallization Behavior of Isotactic Polypropylene Sheets Containing a β-Nucleating Agent under Solid-State Stretching. Polymers (Basel) 2020; 12:polym12061258. [PMID: 32486274 PMCID: PMC7362179 DOI: 10.3390/polym12061258] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/26/2020] [Accepted: 05/28/2020] [Indexed: 11/24/2022] Open
Abstract
The deformation-induced crystallization of an isotactic polypropylene (iPP) sheet containing a β-nucleating agent was evaluated. The phase transformation of the β-modifications was investigated and the crystal morphology was observed at room temperature after stretching at different temperatures. The results showed that the crystallinity increased after solid-state stretching. When the stretching temperature was below the initial crystallization temperature, stretching deformation promoted the orientation of amorphous molecular chains. When the deformation temperature exceeded the crystallization temperature, part of the β-modifications underwent a phase transformation process and was stretched into a shish-kebab structure. However, once the stretching temperature was close to the melting point, the β-modifications melted and recrystallized, and the shish-kebab structure underwent stress relaxation due to poor thermal stability, transforming into α-modifications. It was revealed that the crystal phase transformation mechanism of the β-modifications was based on the orientation of the molecular chains between the adjacent lamellae. In addition, the shish-kebab cylindrite structure played an important role in modifying the tensile and impact properties of the iPP sheet. The tensile and impact strengths increased by as much as 34% and 126%, respectively.
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13
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Zhou J, Zheng Y, Shan G, Bao Y, Wang WJ, Pan P. Stretch-induced crystalline structural evolution and cavitation of poly(butylene adipate-ran-butylene terephthalate)/poly(lactic acid) immiscible blends. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122121] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Ding C, Wu G, Zhang Y, Chen W, Yin B, Yang M. Supramolecular self‐assembly of compound β nucleating agent and effect on polypropylene microporous membrane. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chao Ding
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Gao‐Gao Wu
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Ya Zhang
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Wen‐Bo Chen
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Bo Yin
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Ming‐Bo Yang
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
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15
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Wu GG, Ding C, Chen WB, Zhang Y, Yang W, Yang MB. Effect of the content of β form crystals on biaxially stretched polypropylene microporous membranes and the tuning of pore structures. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Wang W, Zheng L, Liu L, Li W, Li Y, Ma Z. Stretching behavior of the butene‐1/ethylene random copolymer: A direct correspondence between triggering of II‐I phase transition and mechanical yielding. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10052] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Wei Wang
- Tianjin Key Laboratory of Composite and Functional Materials and School of Materials Science and EngineeringTianjin University Tianjin China
| | - Lirong Zheng
- Tianjin Key Laboratory of Composite and Functional Materials and School of Materials Science and EngineeringTianjin University Tianjin China
| | - Liyuan Liu
- Center for Terahertz Waves and College of Precision Instrument and Optoelectronics EngineeringTianjin University and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education) Tianjin China
| | - Wei Li
- Tianjin Key Laboratory of Composite and Functional Materials and School of Materials Science and EngineeringTianjin University Tianjin China
| | - Yuesheng Li
- Tianjin Key Laboratory of Composite and Functional Materials and School of Materials Science and EngineeringTianjin University Tianjin China
| | - Zhe Ma
- Tianjin Key Laboratory of Composite and Functional Materials and School of Materials Science and EngineeringTianjin University Tianjin China
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17
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Wu GG, Chen WB, Ding C, Xu LY, Liu ZY, Yang W, Yang MB. Pore formation mechanism of oriented β polypropylene cast films during stretching and optimization of stretching methods: In-situ SAXS and WAXD studies. POLYMER 2019. [DOI: 10.1016/j.polymer.2018.12.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Wu GG, Xu LY, Chen WB, Ding C, Liu ZY, Yang W, Yang MB. Oriented polypropylene cast films consisted of β-transcrystals induced by the nucleating agent self-assembly and its homogeneous membranes with high porosity. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.07.066] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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19
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Chen R, Lu Y, Jiang Z, Men Y. Cavitation in Poly(4-methyl-1-pentene) during Tensile Deformation. J Phys Chem B 2018; 122:4159-4168. [PMID: 29547292 DOI: 10.1021/acs.jpcb.8b00060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The poly(4-methyl-1-pentene) sample was used to investigate the cavitation-induced stress-whitening phenomenon during stretching at different temperatures via the ultrasmall-angle X-ray scattering technique. Two modes of cavitation were found that mode I cavitation activated around yield point followed by mode II cavitation generated in highly oriented state. The critical strain for initiating the mode II cavitation increases with the increase of the stretching temperature, whereas the critical stress grew steadily in the lower temperature regime (30-60 °C) and reached a plateau at 70 °C. The appearance of mode II cavitation at large strains was independent of the mode I cavitation. The mode I cavitation was attributed to the competitive process between the formation of cavities and shearing yield of lamellae, whereas the mode II cavitation was proven to be related to the failure of the whole highly oriented entangled amorphous network because of the breaking of interfibrillar load-bearing tie molecules. Size distribution of cavities has been successfully calculated using a model fitting procedure. The results showed that the quantity of cavities increased heavily while the size was kept nearly constant during the propagation of the mode II cavitation.
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Affiliation(s)
- Ran Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Renmin Street 5625 , 130022 Changchun , P. R. China
| | - Ying Lu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Renmin Street 5625 , 130022 Changchun , P. R. China
| | - Zhiyong Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Renmin Street 5625 , 130022 Changchun , P. R. China
| | - Yongfeng Men
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Renmin Street 5625 , 130022 Changchun , P. R. China
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20
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Chang B, Schneider K, Vogel R, Heinrich G. Influence of nucleating agent self-assembly on structural evolution of isotactic polypropylene during uniaxial stretching. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.01.081] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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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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22
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Wang L, Hikima Y, Ohshima M, Sekiguchi T, Yano H. Evolution of cellular morphologies and crystalline structures in high-expansion isotactic polypropylene/cellulose nanofiber nanocomposite foams. RSC Adv 2018; 8:15405-15416. [PMID: 35539453 PMCID: PMC9079998 DOI: 10.1039/c8ra01833b] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 04/18/2018] [Indexed: 11/21/2022] Open
Abstract
The development of cell morphology and crystalline microstructure of high expansion injection-molded isotactic polypropylene/cellulose nanofiber (PP/CNF) nanocomposite foams was understood.
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Affiliation(s)
- Long Wang
- Department of Chemical Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Yuta Hikima
- Department of Chemical Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Masahiro Ohshima
- Department of Chemical Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | | | - Hiroyuki Yano
- Research Institute for Sustainable Humano-sphere
- Kyoto University
- Kyoto 611-0011
- Japan
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23
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The structure evolution of polyamide 1212 after stretched at different temperatures and its correlation with mechanical properties. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.04.037] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Himma NF, Anisah S, Prasetya N, Wenten IG. Advances in preparation, modification, and application of polypropylene membrane. JOURNAL OF POLYMER ENGINEERING 2016. [DOI: 10.1515/polyeng-2015-0112] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Polypropylene (PP) is one of the most used polymers for microporous membrane fabrication due to its good thermal stability, chemical resistance, mechanical strength, and low cost. There have been numerous studies reporting the developments and applications of PP membranes. However, PP membrane with high performance is still a challenge. Thus, this article presents a comprehensive overview of the advances in the preparation, modification and application of PP membrane. The preparation methods of PP membrane are firstly reviewed, followed by the modification approaches of PP membrane. The modifications includes hydrophilic and superhydrophobic modification so that the PP membranes become more suitable to be applied either in aqueous applications or in non-aqueous ones. The fouling resistant of hydrophilized PP membrane and the wetting resistant of superhydrophobized PP membrane are then reviewed. Finally, special attention is given to the various potential applications and industrial outlook of the PP membranes.
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25
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Zhang C, Liu G, Jiang Q, Zhao Y, Wang D. Correlation between the fracture toughness and β-crystal fraction in a β-nucleated propylene-based propylene-ethylene random copolymer. J Appl Polym Sci 2016. [DOI: 10.1002/app.42930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Chunbo Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Guoming Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Qianhong Jiang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Ying Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
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26
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Chen Y, Yang S, Yang H, Zhong G, Fang D, Hsiao BS, Li Z. Deformation behavior of oriented β-crystals in injection-molded isotactic polypropylene by in situ X-ray scattering. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.01.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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27
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Papageorgiou DG, Chrissafis K, Bikiaris DN. β-Nucleated Polypropylene: Processing, Properties and Nanocomposites. POLYM REV 2015. [DOI: 10.1080/15583724.2015.1019136] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Zhang C, Liu G, Jiang Q, Yang J, Zhao Y, Wang D. A WAXS/SAXS study on the deformation behavior of β-nucleated propylene–ethylene random copolymer subjected to uniaxial stretching. RSC Adv 2015. [DOI: 10.1039/c5ra04952k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Structural evolution of β-nucleated propylene–ethylene random copolymer during stretching was studied. A deformation model combining crystal transition, cavitation and orientation depending on drawing temperature was proposed.
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Affiliation(s)
- Chunbo Zhang
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - Guoming Liu
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - Qianhong Jiang
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - Jian Yang
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - Ying Zhao
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - Dujin Wang
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
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29
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Zhang RY, Yang W, Zhang QP, Xia XC, Zhu CX, He S, Huang YH, Liu ZY, Yang MB. Hierarchical crystalline morphologies induced by a distinctly different melt penetrating process. RSC Adv 2015. [DOI: 10.1039/c5ra18885g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
It is the first time that hierarchically crystalline morphologies induced by melt penetration of the melt with different interactions.
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Affiliation(s)
- Rui-Yan Zhang
- College of Polymer Science & Engineering
- The State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Wei Yang
- College of Polymer Science & Engineering
- The State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Quan-Ping Zhang
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials
- Southwest University of Science and Technology
- Mianyang 621010
- P. R. China
| | - Xiao-Chao Xia
- College of Polymer Science & Engineering
- The State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Chun-Xia Zhu
- College of Polymer Science & Engineering
- The State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Shan He
- College of Polymer Science & Engineering
- The State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Yan-Hao Huang
- College of Polymer Science & Engineering
- The State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Zheng-Ying Liu
- College of Polymer Science & Engineering
- The State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Ming-Bo Yang
- College of Polymer Science & Engineering
- The State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
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30
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31
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Wang Y, Jiang Z, Fu L, Lu Y, Men Y. Lamellar thickness and stretching temperature dependency of cavitation in semicrystalline polymers. PLoS One 2014; 9:e97234. [PMID: 24820772 PMCID: PMC4018252 DOI: 10.1371/journal.pone.0097234] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 04/16/2014] [Indexed: 11/19/2022] Open
Abstract
Polybutene-1 (PB-1), a typical semicrystalline polymer, in its stable form I shows a peculiar temperature dependent strain-whitening behavior when being stretched at temperatures in between room temperature and melting temperature of the crystallites where the extent of strain-whitening weakens with the increasing of stretching temperature reaching a minima value followed by an increase at higher stretching temperatures. Correspondingly, a stronger strain-hardening phenomenon was observed at higher temperatures. The strain-whitening phenomenon in semicrystalline polymers has its origin of cavitation process during stretching. In this work, the effect of crystalline lamellar thickness and stretching temperature on the cavitation process in PB-1 has been investigated by means of combined synchrotron ultrasmall-angle and wide-angle X-ray scattering techniques. Three modes of cavitation during the stretching process can be identified, namely "no cavitation" for the quenched sample with the thinnest lamellae where only shear yielding occurred, "cavitation with reorientation" for the samples stretched at lower temperatures and samples with thicker lamellae, and "cavitation without reorientation" for samples with thinner lamellae stretched at higher temperatures. The mode "cavitation with reorientation" occurs before yield point where the plate-like cavities start to be generated within the lamellar stacks with normal perpendicular to the stretching direction due to the blocky substructure of the crystalline lamellae and reorient gradually to the stretching direction after strain-hardening. The mode of "cavitation without reorientation" appears after yield point where ellipsoidal shaped cavities are generated in those lamellae stacks with normal parallel to the stretching direction followed by an improvement of their orientation at larger strains. X-ray diffraction results reveal a much improved crystalline orientation for samples with thinner lamellae stretched at higher temperatures. The observed behavior of microscopic structural evolution in PB-1 stretched at different temperatures explains above mentioned changes in macroscopic strain-whitening phenomenon with increasing in stretching temperature and stress-strain curves.
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Affiliation(s)
- Yaotao Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Changchun, People's Republic of China
| | - Zhiyong Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Changchun, People's Republic of China
| | - Lianlian Fu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Changchun, People's Republic of China
| | - Ying Lu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Changchun, People's Republic of China
| | - Yongfeng Men
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Changchun, People's Republic of China
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33
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Ji X, He X, Jiang S. Melting processes of oligomeric α and β isotactic polypropylene crystals at ultrafast heating rates. J Chem Phys 2014; 140:054901. [PMID: 24511973 DOI: 10.1063/1.4862901] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The melting behaviors of α (stable) and β (metastable) isotactic polypropylene (iPP) crystals at ultrafast heating rates are simulated with atomistic molecular dynamics method. Quantitative information about the melting processes of α- and β-iPP crystals at atomistic level is achieved. The result shows that the melting process starts from the interfaces of lamellar crystal through random dislocation of iPP chains along the perpendicular direction of lamellar crystal structure. In the melting process, the lamellar crystal gradually expands but the corresponding thickness decreases. The analysis shows that the system expansion lags behind the crystallinity decreasing and the lagging extents for α- and β-iPP are significantly different. The apparent melting points of α- and β-iPP crystals rise with the increase of the heating rate and lamellar crystal thickness. The apparent melting point of α-iPP crystal is always higher than that of β-iPP at differently heating rates. Applying the Gibbs-Thomson rule and the scaling property of the melting kinetics, the equilibrium melting points of perfect α- and β-iPP crystals are finally predicted and it shows a good agreement with experimental result.
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Affiliation(s)
- Xiaojing Ji
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Xuehao He
- Department of Chemistry, School of Science, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Shichun Jiang
- School of Material, Tianjin University, Tianjin 300072, China
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34
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Wu T, Xiang M, Cao Y, Kang J, Yang F. Pore formation mechanism of β nucleated polypropylene stretched membranes. RSC Adv 2014. [DOI: 10.1039/c4ra03589e] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Schematic diagram of pore formation mechanism of β-PP during stretching at 25 °C and 90 °C.
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Affiliation(s)
- Tong Wu
- 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
| | - Ya Cao
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, People's Republic of China
| | - Jian Kang
- 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
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