Statistical thermodynamics of polydisperse polymer systems in the framework of lattice fluid model: Effect of molecular weight and its distribution on the spinodal in polymer solution
文献类型：期刊论文
| 作者 | Yang J ; Sun ZY ; Jiang W ; An LJ |
| 刊名 | journal of chemical physics
 |
| 出版日期 | 2002 |
| 卷号 | 116期号:13页码:5892-5900 |
| ISSN号 | 0021-9606 |
| 关键词 | LIQUID PHASE-SEPARATION GAS TREATMENT POLYSTYRENE STABILITY EQUILIBRIA EQUATIONS MIXTURES STATE DEPENDENCE BLENDS |
| 通讯作者 | an lj |
| 中文摘要 | with the aid of thermodynamics of gibbs, the expression of the spinodal was derived for the polydisperse polymer-solvent system in the framework of sanchez-lacombe lattice fluid theory (sllft). for convenience, we considered that a model polydisperse polymer contains three sub-components. according to our calculation, the spinodal depends on both weight-average ((m) over bar (w)) and number-average ((m) over bar (n)) molecular weights of the polydisperse polymer, but the z-average molecular weight ((m) over bar (z)) dependence on the spinodal is invisible. the dependence of free volume on composition, temperature, molecular weight, and its distribution results in the effect of (m) over bar (n) on the spinodal. moreover, it has been found that the effect of changing (m) over bar (w) on the spinodal is much bigger than that of changing (m) over bar (n) and the extrema of the spinodal increases with the rise of the weight-average molecular weight of the polymer in the solutions with upper critical solution temperature (ucst). however, the effect of polydispersity on the spinodal can be neglected for the polymer with a considerably high weight-average molecular weight. a more simple expression of the spinodal for the polydisperse polymer solution in the framework of sllft was also derived under the assumption of upsilon(*)=upsilon(1)(*)=upsilon(2)(*) and (1/r(1)(0))-(1/r(2i)(0))-->(1/r(1)(0)). |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000174470700066 |
| 公开日期 | 2010-11-03 |
| 源URL | [http://202.98.16.49/handle/322003/18717]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Yang J,Sun ZY,Jiang W,et al. Statistical thermodynamics of polydisperse polymer systems in the framework of lattice fluid model: Effect of molecular weight and its distribution on the spinodal in polymer solution[J]. journal of chemical physics,2002,116(13):5892-5900. |
| APA | Yang J,Sun ZY,Jiang W,&An LJ.(2002).Statistical thermodynamics of polydisperse polymer systems in the framework of lattice fluid model: Effect of molecular weight and its distribution on the spinodal in polymer solution.journal of chemical physics,116(13),5892-5900. |
| MLA | Yang J,et al."Statistical thermodynamics of polydisperse polymer systems in the framework of lattice fluid model: Effect of molecular weight and its distribution on the spinodal in polymer solution".journal of chemical physics 116.13(2002):5892-5900. |
入库方式： OAI收割
来源：长春应用化学研究所
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