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Synchrotron small angle X-ray scattering study on the conformation of polystyrene in compressed CO2-toluene mixture
Dong BZ(董宝中); Rong LX(荣利霞); Liu Y(柳义); Dong, BZ; Rong, LX; Liu, Y; Li, D; Han, BX; Liu, ZM
2003
发表期刊SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY
卷号46期号:6页码:570-579
通讯作者Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China ; Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
摘要Synchrotron small angle X-ray scattering (SAXS) was performed to investigate the effect of dissolved CO2 in toluene on the conformation of polystyrene (PS) in the solution. It has been found that the second virial coefficient A(2) and the radius of gyration R-g decrease with the increasing antisolvent CO2 pressure. The scattering intensity of PS chain followed I (h) proportional to h(-alpha) under different antisolvent pressures (0, 0.6, 1.5, 2.4, 3.3, and 4.2 MPa), suggesting that the PS chain has self-similar structure behavior or a fractal structure in the presence of antisolvent CO2, All this reveals a large effect of antisolvent pressure or the solubility of CO2 in the solution on PS structure. The fractal dimensions increase with the increasing antisolvent pressure, indicating that the polymer chain changes from a swollen coil into a rather dense globule in the course of adding antisolvent CO2.
文章类型Article
关键词small-angle X-ray scattering polystyrene conformation
学科领域Physics
研究领域[WOS]Physics
DOI10.1360/03yw005
URL查看原文
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000187496600002
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237991
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Dong BZ,Rong LX,Liu Y,et al. Synchrotron small angle X-ray scattering study on the conformation of polystyrene in compressed CO2-toluene mixture[J]. SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY,2003,46(6):570-579.
APA 董宝中.,荣利霞.,柳义.,Dong, BZ.,Rong, LX.,...&Liu, ZM.(2003).Synchrotron small angle X-ray scattering study on the conformation of polystyrene in compressed CO2-toluene mixture.SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY,46(6),570-579.
MLA 董宝中,et al."Synchrotron small angle X-ray scattering study on the conformation of polystyrene in compressed CO2-toluene mixture".SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY 46.6(2003):570-579.
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