ICCAS OpenIR
Effect of gas antisolvent on conformation of polystyrene in toluene: Viscosity and small-angle X-ray scattering study
Li, D; Han, BX; Liu, ZM; Liu, J; Zhang, XG; Wang, SG; Zhang, XF; Wang, J; Dong, BZ
2001-03-27
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume34Issue:7Pages:2195-2201
AbstractSynchrotron radiation small-angle X-ray scattering (SAXS) and the viscosity technique were used to investigate the effect of dissolved CO(2) in toluene on the conformation of polystyrene (PS) in the solution. The viscosity of PS solution decreases faster with increasing antisolvent CO(2) pressure than that of the solvent in the absence of the polymer. The intrinsic viscosity [eta] calculated using the well-known Huggins equation decreases with antisolvent pressure. It was found that the second virial coefficient Az and the apparent mean-square radius of gyration (R(g)(2))(1/2) decreases with pressure of antisolvent CO(2). All these phenomena can be attributed to the shrink of PS chain in the course of adding the gas antisolvent because the interaction between the polymer and solvent becomes weaker. The values (R(g)(2))(1/2) at different pressures obtained from SAXS data agree reasonably with those calculated from Flory theory using the viscosity data determined in this work. This implies that Flory theory, which has been used widely for the solutions of polymers in liquid solvents, is also applicable to the polymer solution with gas antisolvent.
DOI10.1021/ma0014463
Indexed BySCI
Language英语
WOS IDWOS:000167615600023
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76608
Collection中国科学院化学研究所
Corresponding AuthorHan, BX
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
2.Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Li, D,Han, BX,Liu, ZM,et al. Effect of gas antisolvent on conformation of polystyrene in toluene: Viscosity and small-angle X-ray scattering study[J]. MACROMOLECULES,2001,34(7):2195-2201.
APA Li, D.,Han, BX.,Liu, ZM.,Liu, J.,Zhang, XG.,...&Dong, BZ.(2001).Effect of gas antisolvent on conformation of polystyrene in toluene: Viscosity and small-angle X-ray scattering study.MACROMOLECULES,34(7),2195-2201.
MLA Li, D,et al."Effect of gas antisolvent on conformation of polystyrene in toluene: Viscosity and small-angle X-ray scattering study".MACROMOLECULES 34.7(2001):2195-2201.
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