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Dual Effects of Interfacial Interaction and Geometric Constraints on Structural Formation of Poly(butylene terephthalate) Nanorods. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2736-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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2
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Liang Z, Zheng N, Ni B, Lai Z, Niu H, Zhang S, Cao Y. Coherent crystal branches: the impact of tetragonal symmetry on the 2D confined polymer nanostructure. IUCRJ 2021; 8:215-224. [PMID: 33708399 PMCID: PMC7924242 DOI: 10.1107/s2052252521000774] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 01/22/2021] [Indexed: 06/12/2023]
Abstract
The symmetry of polymer crystals greatly affects the optical, thermal con-ductivity and mechanical properties of the materials. Past studies have shown that the two-dimensional (2D) confined crystallization of polymer nanorods could produce anisotropic structures. However, few researchers have focused on understanding confined nanostructures from the perspective of crystal sym-metry. In this research, we demonstrate the molecular chain self-assembly of tetragonal crystals under cylindrical confinement. We specifically selected poly(4-methyl-1-pentene) (P4MP1) with a 41 or 72 helical conformation (usually crystallizing with a tetragonal lattice) as the model polymer. We found a coherent crystal branching of the tetragonal crystal in the P4MP1 nanorods. The unusual 45°- and 135°-{200} diffractions and the meridional 220 diffraction (from 45°-tilted crystals) have shown a uniform crystal branching between the a 1-axis crystals and the 45°-tilted crystals in the rod long axis, which originates from a structural defect associated with tetragonal symmetry. Surprisingly, this chain packing defect in the tetragonal cell can be controlled to develop along the rod long axis in 2D confinement.
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Affiliation(s)
- Ziying Liang
- Institute for Advanced Study, Shenzhen University, Guangdong 518060, People’s Republic of China
| | - Nan Zheng
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangdong 513060, People’s Republic of China
| | - Bo Ni
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Ziwei Lai
- Institute for Advanced Study, Shenzhen University, Guangdong 518060, People’s Republic of China
| | - Hui Niu
- Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, People’s Republic of China
| | - Shuailin Zhang
- Department of Polymer Science, The University of Akron, Akron, OH 44325, USA
| | - Yan Cao
- Institute for Advanced Study, Shenzhen University, Guangdong 518060, People’s Republic of China
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Lai Z, Zheng N, Liang Z, Wang Y, Niu H, Ji MS, Ni B, Huang X, Ouyang X, Li X, Lotz B, Cao Y. Structural Ensemble of Molecular Chains in Isotactic Polypropylene under Cylindrical Confinement. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02357] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ziwei Lai
- Institute for Advanced Study (IAS), Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Nan Zheng
- State Key Lab of Luminescent Materials and Devices, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Ziying Liang
- Institute for Advanced Study (IAS), Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Yuanjie Wang
- Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Hui Niu
- Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Ming-Sheng Ji
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Bo Ni
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiang Huang
- College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Xing Ouyang
- College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Xiaoguang Li
- Institute for Advanced Study (IAS), Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Bernard Lotz
- Institut Charles Sadron, CNRS and Université de Strasbourg, 6, Rue Boussingault, Strasbourg 67034, France
| | - Yan Cao
- Institute for Advanced Study (IAS), Shenzhen University, Shenzhen, Guangdong 518060, China
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Lai Z, Zhang S, Zheng N, Yu S, Ageishi M, Jinnai H, Cao Y. Hierarchical structure of the triclinic α-phase crystal in nylon 6,12 mediated by two-dimensional confinement. J Appl Crystallogr 2020. [DOI: 10.1107/s1600576719014705] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
It has been recognized that macromolecular chains can self-assemble into a hierarchical structure from lamellae to spherulites in bulk crystallization. However, little account has been taken of crystal symmetry effects on the hierarchical nanostructure in polymers under cylindrical confinement. In this research, a model polymer, nylon 6,12, most commonly occurring in the triclinic α phase, was chosen in order to demonstrate the effect of triclinic symmetry on the 2D-constrained polymer nanostructure. The self-arranging unit of nylon 6,12 takes various forms, including stems, unit cells, hydrogen-bonded sheets, lamellae and complex spherulites, which is an essential structural feature for investigating hierarchical nanostructure. The rod nanostructure in confinement was examined by cross-checking electron and X-ray diffraction techniques. It is found that thea* axis of the α-phase cell is inclined at about ±6–11° to the rod long axis within thea*b* plane around thecaxis (caxis ⊥ rod long axis). The rotation of thea*b* plane most likely results from the impact of the triclinic symmetry on the molecular chain packing under 2D confinement. A mechanism for thisa*b* plane tilting is proposed.
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Zeng X, Zhang S, Zheng N, Yu S, Li X, Ageishi M, Lotz B, Liu G, Cao Y. Diversified α-phase nanostructure of isotactic polypropylene under cylindrical confinement via cross diffraction analysis. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121647] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Yu S, Lai Z, Jinnai H, Zeng X, Ageishi M, Lotz B, Cheng SZD, Zheng N, Zhang S, Feng X, Cao Y. Adding Symmetry: Cylindrically Confined Crystallization of Nylon-6. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02672] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Shichen Yu
- Institute for Advanced Study, Shenzhen University, Guangdong 518060, China
| | - Ziwei Lai
- Institute for Advanced Study, Shenzhen University, Guangdong 518060, China
| | - Hiroshi Jinnai
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai 980-8577, Japan
| | - Xingming Zeng
- Institute for Advanced Study, Shenzhen University, Guangdong 518060, China
| | - Masaki Ageishi
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai 980-8577, Japan
| | - Bernard Lotz
- Institut Charles Sadron (CNRS—ULP), 6, rue Boussingault, Strasbourg 67083, France
| | - Stephen Z. D. Cheng
- Advanced Institute for Soft Matter Science and Technology (AISMST), South China University of Technology, Guangdong 510640, China
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Nan Zheng
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangdong 513060, China
| | - Shuailin Zhang
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Xueyan Feng
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Yan Cao
- Institute for Advanced Study, Shenzhen University, Guangdong 518060, China
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Su C, Shi G, Li X, Zhang X, Müller AJ, Wang D, Liu G. Uniaxial and Mixed Orientations of Poly(ethylene oxide) in Nanoporous Alumina Studied by X-ray Pole Figure Analysis. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01801] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Cui Su
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of
Chinese Academy of Sciences, Beijing 100049, China
| | - Guangyu Shi
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of
Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaolu Li
- Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
| | - Xiuqin Zhang
- Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
| | - Alejandro J. Müller
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
- IKERBASQUE, Basque
Foundation for Science, Bilbao, Spain
| | - Dujin Wang
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of
Chinese Academy of Sciences, Beijing 100049, China
| | - Guoming Liu
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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Molecular self-assembly of one-dimensional polymer nanostructures in nanopores of anodic alumina oxide templates. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.10.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Mijangos C, Hernández R, Martín J. A review on the progress of polymer nanostructures with modulated morphologies and properties, using nanoporous AAO templates. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2015.10.003] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Catlow CRA. Recent developments in the structural science of materials. IUCRJ 2015; 2:384-6. [PMID: 26175897 PMCID: PMC4491309 DOI: 10.1107/s2052252515010891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This Editorial surveys the current status and recent developments in the structural science of materials as exemplified by the articles recently published in IUCrJ.
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Affiliation(s)
- C. R. A. Catlow
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
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