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Song K, Liu D, Wu LF, Wang Z. Multiple kinetic processes of lamellar growth in crystallization of stretched lightly crosslinked polyethylene. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Camara M, Rishi K, Beaucage G, Sukumaran SK. A scattering function for correlated lamellae. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Toda A. Small angle X-ray scattering from finite sequence of lamellar stacks of crystalline polymers. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Song K, Wu LF, Liu D, Li L, Song J, Wang Z. Revealing the detailed structure in flow-induced crystallization of semicrystalline polymers. Phys Chem Chem Phys 2020; 22:25206-25214. [PMID: 33125017 DOI: 10.1039/d0cp04964f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We systematically investigate the detailed structure in the flow-induced crystallization of a lightly cross-linked high-density polyethylene as a model semicrystalline polymer sample by combining the small-angle X-ray scattering (SAXS) and the spherical harmonic expansion (SHE) method. The SHE divides the two-dimensional SAXS pattern into several components according to the deformation geometry, and allows extraction of the most relevant information. Employing the first two anisotropic components in the expansion and a comprehensive model, we determine the crystalline morphological parameters, such as the long period, the lamellar diameter and thickness, and their polydispersities. In particular, we find that the lamellar diameter exhibits bimodal distributions at high strains. Lamellae with similar diameters tend to gather rather than to randomly distribute with others, suggesting the existence of heterogeneity in the semicrystalline structure. Moreover, we observe the strong polydispersities of the lamellar structure at low strains. The structural heterogeneity and polydispersities could be related to the inhomogeneities in crystal growth and nucleation processes.
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Affiliation(s)
- Kun Song
- Department of Engineering Physics & Key Laboratory of Particle & Radiation Imaging (Tsinghua University) of Ministry of Education, Tsinghua University, Beijing 100084, China.
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Wang H, Xu J, Sun S, Liu Y, Zhu C, Li J, Sun J, Wang S, Zhang H. Characterization of Crystal Microstructure Based on Small Angle X-ray Scattering (SAXS) Technique. Molecules 2020; 25:molecules25030443. [PMID: 31973082 PMCID: PMC7036759 DOI: 10.3390/molecules25030443] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/31/2019] [Accepted: 01/02/2020] [Indexed: 11/16/2022] Open
Abstract
Small-angle X-ray scattering (SAXS) is an effective method to obtain microstructural information of materials. However, due to the influence of crystal surface effects, SAXS has a deviation in the characterization of the crystal microstructure. In order to solve the influence of crystal surface effect on the internal defect signal, the microstructure of Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) crystal was characterized by soaking the sample in the matching solution. We found that the absolute scattering intensity, specific surface and volume fraction of the sample in the matching solution are significantly lower than the initial sample, which solves the influence of the crystal surface effect on the test results. Comparing the scattering results of the samples in different electron density matching solutions, it was found that the best result was obtained when using GPL-107 perfluoropolyether (PFPE) matching solution and the same law was obtained by controlling the experiment with 2,4,6,8,10,12-hexanitrohexaazaisowurtzitane (CL-20) crystal. The fitting density was calculated according to the theoretical density and void volume fraction of the sample, and the calculated results are close to the test results of Particle Density Distribution Analyzer (PDDA). Based on this paper, we provide a method to obtain the correct information of crystal microstructure.
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Affiliation(s)
- Hongfan Wang
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China; (H.W.); (Y.L.); (S.W.)
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China; (J.X.); (S.S.); (C.Z.); (J.L.)
| | - Jinjiang Xu
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China; (J.X.); (S.S.); (C.Z.); (J.L.)
| | - Shanhu Sun
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China; (J.X.); (S.S.); (C.Z.); (J.L.)
| | - Yanru Liu
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China; (H.W.); (Y.L.); (S.W.)
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China; (J.X.); (S.S.); (C.Z.); (J.L.)
| | - Chunhua Zhu
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China; (J.X.); (S.S.); (C.Z.); (J.L.)
| | - Jie Li
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China; (J.X.); (S.S.); (C.Z.); (J.L.)
| | - Jie Sun
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China; (J.X.); (S.S.); (C.Z.); (J.L.)
- Correspondence: (J.S.); (H.Z.)
| | - Shumin Wang
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China; (H.W.); (Y.L.); (S.W.)
| | - Haobin Zhang
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China; (J.X.); (S.S.); (C.Z.); (J.L.)
- Correspondence: (J.S.); (H.Z.)
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Ren Y, Yang K, Shan D, Tong C, Allcock HR. Polyphosphazenes and Cyclotriphosphazenes with Propeller-like Tetraphenylethyleneoxy Side Groups: Tuning Mechanical and Optoelectronic Properties. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b02022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Yi Ren
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Kai Yang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | | | - Cuiyan Tong
- Institute of Chemistry, Northeast Normal University, Changchun 130024, China
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Lin Y, Meng L, Wu L, Li X, Chen X, Zhang Q, Zhang R, Zhang W, Li L. A semi-quantitative deformation model for pore formation in isotactic polypropylene microporous membrane. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.10.067] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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An intensity superposition model to fit the small angle X-ray scattering of semicrystalline polymers and its application to the monitoring of non-isothermal crystallization. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.06.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Modzelewski T, Wonderling NM, Allcock HR. Polyphosphazene Elastomers Containing Interdigitated Oligo-p-phenyleneoxy Side Groups: Synthesis, Mechanical Properties, and X-ray Scattering Studies. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01191] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tomasz Modzelewski
- Department of Chemistry and ‡Materials Research
Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Nichole M. Wonderling
- Department of Chemistry and ‡Materials Research
Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Harry R. Allcock
- Department of Chemistry and ‡Materials Research
Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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Wang M, Xiao Y, Cao W, Jiao N, Chen W, Xu L. SAXS and WAXD study of periodical structure for polyacrylonitrile fiber during coagulation. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3436] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mengfan Wang
- State Key Laboratory of Organic-inorganic Composites, The Key Laboratory of Education Ministry on Carbon Fiber and Functional Polymer; Beijing University of Chemical Technology; Beijing 100029 China
| | - Yingge Xiao
- State Key Laboratory of Organic-inorganic Composites, The Key Laboratory of Education Ministry on Carbon Fiber and Functional Polymer; Beijing University of Chemical Technology; Beijing 100029 China
| | - Weiyu Cao
- State Key Laboratory of Organic-inorganic Composites, The Key Laboratory of Education Ministry on Carbon Fiber and Functional Polymer; Beijing University of Chemical Technology; Beijing 100029 China
| | - Na Jiao
- State Key Laboratory of Organic-inorganic Composites, The Key Laboratory of Education Ministry on Carbon Fiber and Functional Polymer; Beijing University of Chemical Technology; Beijing 100029 China
| | - Wang Chen
- State Key Laboratory of Organic-inorganic Composites, The Key Laboratory of Education Ministry on Carbon Fiber and Functional Polymer; Beijing University of Chemical Technology; Beijing 100029 China
| | - Lianghua Xu
- State Key Laboratory of Organic-inorganic Composites, The Key Laboratory of Education Ministry on Carbon Fiber and Functional Polymer; Beijing University of Chemical Technology; Beijing 100029 China
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Dittrich B, Jayatilaka D. Reliable Measurements of Dipole Moments from Single-Crystal Diffraction Data and Assessment of an In-Crystal Enhancement. ELECTRON DENSITY AND CHEMICAL BONDING II 2012. [DOI: 10.1007/430_2012_78] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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