What has brought on the effects of number-average molecular weight on the spinodals in polymer mixtures?
文献类型：期刊论文
| 作者 | Yang J ; Sun ZY ; Jiang W ; An LJ |
| 刊名 | journal of physical chemistry b
 |
| 出版日期 | 2002 |
| 卷号 | 106期号:43页码:11305-11314 |
| 关键词 | POLYDISPERSE FLUID MIXTURES LIQUID PHASE-SEPARATION LATTICE-GAS TREATMENT STATISTICAL THERMODYNAMICS STABILITY SYSTEMS BLENDS DIAGRAMS BEHAVIOR MODEL |
| ISSN号 | 1520-6106 |
| 通讯作者 | an lj |
| 中文摘要 | on the basis of the thermodynamics of gibbs, the spinodal for the quasibinary system was derived in the framework of the sanchez-lacombe lattice fluid theory. all of the spinodals were calculated based on a model polydisperse polymer mixture, where each polymer contains three different molecular weight subcomponents. according to our calculations, the spinodal depends on both weight-average ((m) over bar (w)) and number-average ((m) over bar (n)) molecular weights, whereas that of the z-average molecular weight is invisible. moreover, the extreme of the spinodal decreases when the polydispersity index (eta = (m) over bar (w)/(m) over bar (n)) of the polymer increases. the effect of polydispersity on the spinodal decreases when the molecular weight gets larger and can be negligible at a certain large molecular weight. it is well-known that the influence of polydispersity on the phase equilibrium (coexisting curve, cloud point curves) is much more pronounced than on the spinodal. the effect of m, on the spinodal is discussed as it results from the infuluence of composition temperatures, molecular weight, and the latter's distribution on free volume. an approximate expression, which is in the assumptions of v* v(1)* = v(2)* and 1/r --> 0 for both of the polymers, was also derived for simplification. it can be used in high molecular weight, although it failed to make visible the effect of number-average molecular weight on the spinodal. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000178874100034 |
| 公开日期 | 2010-11-03 |
| 源URL | [http://202.98.16.49/handle/322003/18245]  |
| 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. What has brought on the effects of number-average molecular weight on the spinodals in polymer mixtures?[J]. journal of physical chemistry b,2002,106(43):11305-11314. |
| APA | Yang J,Sun ZY,Jiang W,&An LJ.(2002).What has brought on the effects of number-average molecular weight on the spinodals in polymer mixtures?.journal of physical chemistry b,106(43),11305-11314. |
| MLA | Yang J,et al."What has brought on the effects of number-average molecular weight on the spinodals in polymer mixtures?".journal of physical chemistry b 106.43(2002):11305-11314. |
入库方式： OAI收割
来源：长春应用化学研究所
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