中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Temperature and pressure dependence of phase separation of trans-decahydronaphthalene/polystyrene solution

文献类型:期刊论文

作者Jiang, SC; An, LJ; Jiang, BZ; Wolf, BA
刊名CHEMICAL PHYSICS
出版日期2004-03-08
卷号298期号:1-3页码:37-45
关键词Td/ps Polymer Solution Thermodynamics Pressure Effect Negative Pressure
ISSN号0301-0104
DOI10.1016/j.chemphys.2003.11.002
英文摘要The cloud-point temperatures (T-c1's) of ti-ans-decahydronaphthalene (TD)/polystyrene (PS, M-w = 270 kg/mol) solutions were determined by fight scattering measurements over a range of temperatures (1-16 degreesC), pressures (100-900 bar), and compositions (4.2-21.6 vol% polymer). The system phase separates upon cooling and the T-c1 was found to increase with the rising pressure for the constant composition. In the absence of special effects this finding indicates positive excess volumes. The special attention was paid to the demixing temperatures as a function of the pressure for the different polymer solutions and the plots in the T-volume fraction plane and P-volume fraction plane. The cloud-point curves of polymer solutions under changing pressures were observed for different compositions, demonstrates that the TD/PS system exhibits UCST (phase separation upon cooling) behavior. With this data the phase diagrams under pressure were calculated applying the Sanchez-Lacombe (SL) lattice fluid theory. Furthermore, the cause of phase separation, i.e., the influence of Flory-Huggins (FH) interaction parameter under pressure was investigated. The predictions of the SL theory concerning the FH interaction parameter and the influence of pressure on miscibility are investigated. The LCSP (phase separation upon increasing pressure) and UCST behavior were predicated by extrapolating the pressure to negative region on pressure-composition plane for TD/PS polymer solutions. (C) 2003 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000189216600004
出版者ELSEVIER SCIENCE BV
源URL[http://ir.iccas.ac.cn/handle/121111/82047]  
专题中国科学院化学研究所
通讯作者Jiang, SC
作者单位1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Univ Mainz, Inst Phys Chem, D-55099 Mainz, Germany
推荐引用方式
GB/T 7714
Jiang, SC,An, LJ,Jiang, BZ,et al. Temperature and pressure dependence of phase separation of trans-decahydronaphthalene/polystyrene solution[J]. CHEMICAL PHYSICS,2004,298(1-3):37-45.
APA Jiang, SC,An, LJ,Jiang, BZ,&Wolf, BA.(2004).Temperature and pressure dependence of phase separation of trans-decahydronaphthalene/polystyrene solution.CHEMICAL PHYSICS,298(1-3),37-45.
MLA Jiang, SC,et al."Temperature and pressure dependence of phase separation of trans-decahydronaphthalene/polystyrene solution".CHEMICAL PHYSICS 298.1-3(2004):37-45.

入库方式: OAI收割

来源:化学研究所

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