Synchrotron small angle X-ray scattering study on the conformation of polystyrene in compressed CO2-toluene mixture

	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
刊名	SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY
	2003
卷号	46 期号:6 页码:570-579
关键词	small-angle X-ray scattering polystyrene conformation
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
英文摘要	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.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000187496600002
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/237991]
专题	高能物理研究所_多学科研究中心高能物理研究所_加速器中心
作者单位	中国科学院高能物理研究所
推荐引用方式 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.