Quantitative evaluation of equatorial small-angle X-ray scattering for cylindrical fibers
Elongated microvoids, internal fibrillar structure, and edge scattering from both surface refraction cause an equatorial streak in small angle X-ray scattering. A model for analyzing the edge scattering of fibers is proposed. Simulation results indicate that the intensity of edge scattering from sur...
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Published in | Chinese physics B Vol. 22; no. 4; pp. 354 - 359 |
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Format | Journal Article |
Language | English |
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01.04.2013
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Abstract | Elongated microvoids, internal fibrillar structure, and edge scattering from both surface refraction cause an equatorial streak in small angle X-ray scattering. A model for analyzing the edge scattering of fibers is proposed. Simulation results indicate that the intensity of edge scattering from surface refraction of a cylindrical fiber is strong and makes an important contribution to the equatorial streak. Two factors influence edge scattering intensity. One is the sample-to-detector distance (D); edge scattering intensity increases with increasing D. The equatorial streak becomes weak when D is shortened. The other factor is the refraction index. Edge scattering intensity increases as the real component of the refraction index decreases. In experiment, weak or even no equatorial streaks were found for samples measured in a roughly index-matching fluid. Edge scattering can be eliminated or weakened, and it can be calculated by comparing the intensities of a cylindrical fiber when it is measured in air and in index-matching fluid. The simulation data are basically in agreement with the experimental data. |
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AbstractList | Elongated microvoids, internal fibrillar structure, and edge scattering from both surface refraction cause an equatorial streak in small angle X-ray scattering. A model for analyzing the edge scattering of fibers is proposed. Simulation results indicate that the intensity of edge scattering from surface refraction of a cylindrical fiber is strong and makes an important contribution to the equatorial streak. Two factors influence edge scattering intensity. One is the sample-to-detector distance (D); edge scattering intensity increases with increasing D. The equatorial streak becomes weak when D is shortened. The other factor is the refraction index. Edge scattering intensity increases as the real component of the refraction index decreases. In experiment, weak or even no equatorial streaks were found for samples measured in a roughly index-matching fluid. Edge scattering can be eliminated or weakened, and it can be calculated by comparing the intensities of a cylindrical fiber when it is measured in air and in index-matching fluid. The simulation data are basically in agreement with the experimental data. Elongated microvoids, internal fibrillar structure, and edge scattering from both surface refraction cause an equatorial streak in small angle X-ray scattering. A model for analyzing the edge scattering of fibers is proposed. Simulation results indicate that the intensity of edge scattering from surface refraction of a cylindrical fiber is strong and makes an important contribution to the equatorial streak. Two factors influence edge scattering intensity. One is the sample-to-detector distance (D); edge scattering intensity increases with increasing D. The equatorial streak becomes weak when D is shortened. The other factor is the refraction index. Edge scattering intensity increases as the real component of the refraction index decreases. In experiment, weak or even no equatorial streaks were found for samples measured in a roughly index-matching fluid. Edge scattering can be eliminated or weakened, and it can be calculated by comparing the intensities of a cylindrical fiber when it is measured in air and in index-matching fluid. The simulation data are basically in agreement with the experimental data. |
Author | 李小芸 李秀宏 杨春明 滑文强 赵镍 缪夏然 田丰 王玉柱 边风刚 王劼 |
AuthorAffiliation | Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China |
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Cites_doi | 10.1016/j.carbpol.2011.10.022 10.1007/s10570-012-9716-2 10.1088/1674-1137/35/9/016 10.1016/S0008-6223(02)00407-4 10.1107/S0108767387099100 10.1021/ma991427x 10.1002/app.23415 10.1107/S002188989400227X 10.1016/j.polymer.2010.12.019 10.1002/(SICI)1099-0488(19980115)36:1<39::AID-POLB5>3.0.CO;2-P 10.1023/A:1017953412385 10.1002/pol.1976.180140309 10.1107/S0021889869006996 10.1016/j.colsurfa.2004.04.074 10.1016/S0032-3861(00)00460-2 10.1021/ma990896w 10.1088/1009-1963/13/5/025 10.1088/1004-423X/4/3/006 10.1021/ma980004c 10.1088/1009-1963/10/5/313 10.1002/pol.1973.180110104 10.1016/0032-3861(91)90217-7 10.1007/BF01106569 10.1007/BF00807395 10.1021/ma902083z 10.1002/pol.1962.1205816611 10.1002/polb.21836 10.1063/1.2891069 |
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Notes | Elongated microvoids, internal fibrillar structure, and edge scattering from both surface refraction cause an equatorial streak in small angle X-ray scattering. A model for analyzing the edge scattering of fibers is proposed. Simulation results indicate that the intensity of edge scattering from surface refraction of a cylindrical fiber is strong and makes an important contribution to the equatorial streak. Two factors influence edge scattering intensity. One is the sample-to-detector distance (D); edge scattering intensity increases with increasing D. The equatorial streak becomes weak when D is shortened. The other factor is the refraction index. Edge scattering intensity increases as the real component of the refraction index decreases. In experiment, weak or even no equatorial streaks were found for samples measured in a roughly index-matching fluid. Edge scattering can be eliminated or weakened, and it can be calculated by comparing the intensities of a cylindrical fiber when it is measured in air and in index-matching fluid. The simulation data are basically in agreement with the experimental data. fiber; edge scattering; small angle scattering; equatorial streak 11-5639/O4 Li Xiao-Yun, Li Xiu-Hong, Yang Chun-Ming, Hua Wen-Qiang, Zhao Nie, Miao Xia-Ran, Tian Feng, Wang Yu-Zhu, Bian Feng-Gang, Wang Jie( Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China) ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
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References | 22 23 24 26 27 28 29 Wang D H (4) 2011; 35 Li Z H (3) 2001; 10 30 10 11 12 13 Hong X G (1) 2004; 13 14 15 16 17 18 19 Han F T (2) 1995; 4 5 6 7 8 9 20 Li X Y (25) 2011; 332–334 21 |
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SubjectTerms | Computational fluid dynamics Fibers Fluid flow Fluids Mathematical models Refraction Scattering Small angle X ray scattering Streak 圆柱形 小角度X射线散射 折射率 散射强度 散射模型 纤维状 评价 赤道 |
Title | Quantitative evaluation of equatorial small-angle X-ray scattering for cylindrical fibers |
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