DC 欄位 | 值 | 語言 |
dc.contributor.author | 諶玉真 | zh_TW |
dc.creator | 諶玉真 | - |
dc.date | 2000-09-15 | - |
dc.date.accessioned | 2006-07-25T09:37:32Z | - |
dc.date.accessioned | 2018-06-28T17:18:03Z | - |
dc.date.available | 2006-07-25T09:37:32Z | - |
dc.date.available | 2018-06-28T17:18:03Z | - |
dc.date.issued | 2000-09-15 | - |
dc.identifier | 892214E002006 | zh_TW |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw//handle/246246/9235 | - |
dc.description.abstract | 本文是以蒙地卡羅法研究幾近無熱效
應高分子溶液的相平衡行為。我們發現當
溫度提高時,高分子粒子與溶劑粒子間的
自由體積差異隨之加大。在到達所謂的下
臨界溫度時,因為商的效應,使得溶劑粒
子排斥高分子,而造成相分離的現象。我
們也發現較長的高分子因為它們與溶劑粒
子的自由體積差異較大,所以相分離的起
始溫度亦較低。對於等長的高分子且溫度
相同的情況下,壓力的增加會減少高分子
與溶劑粒子間自由體積的差異,故相分離
現象會較不明顯。我們亦將模擬結果與
SAFT 理論比較,發現SAFT 理論在對於高
分子溶液定性的描繪上,有很好的預測性,但在定量上尚無法有精確的結果。 | zh_TW |
dc.description.abstract | The Phase equilibrium behaviors of a
nearly athermal polymer/solvent solution are
studied by using the Monte Carlo method. It
is found that as temperature increases, the
free volume differences between solvent
molecules and polymer chains become larger.
To a certain temperature, which is the so
called Lower Critical Solution Temperature (LCST) the entropic effect dominates over
the enthalpic effect, thus phase separation
occurs. We have also found that phase
separation takes place at lower temperature
for longer chain polymer solution. By
comparing the phase envelope of polymer of
the same chain length but at different
pressure, LCST increases as pressure
increases. We have also applied the SAFT
theory to study the phase behavior and it is
found to be able to give qualitatively good
predictions. | en |
dc.format | application/pdf | zh_TW |
dc.format.extent | 53213 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language | zh-TW | zh_TW |
dc.language.iso | zh_TW | - |
dc.publisher | 臺北市:國立臺灣大學化學工程學系暨研究所 | zh_TW |
dc.rights | 國立臺灣大學化學工程學系暨研究所 | zh_TW |
dc.subject | 蒙地卡羅法 | zh_TW |
dc.subject | 幾近無熱效應高分
子溶液 | zh_TW |
dc.subject | 相平衡行為 | zh_TW |
dc.subject | 自由體積 | zh_TW |
dc.subject | 下臨界溫度 | zh_TW |
dc.subject | SAFT 理論 | zh_TW |
dc.subject | Athermal Polymer/solvent
Solution | en |
dc.subject | Monte Carlo Method | en |
dc.subject | LCST | en |
dc.subject | Entropic | en |
dc.subject | Phase
Seperation | en |
dc.subject | SAFT theory | en |
dc.title | 幾近無熱效應高分子溶液之商驅動相分離現象的研究 | zh_TW |
dc.title | Entropy-Driven Phase Separation of a Nominally
Athermal Model Polymer/Solvent Solution | en |
dc.type | report | en |
dc.identifier.uri.fulltext | http://ntur.lib.ntu.edu.tw/bitstream/246246/9235/1/892214E002006.pdf | - |
dc.coverage | 計畫年度:89
第一期;起迄日期:1999-08-01/2000-07-31 | zh_TW |
item.openairetype | report | - |
item.fulltext | with fulltext | - |
item.languageiso639-1 | zh_TW | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_93fc | - |
item.grantfulltext | open | - |
crisitem.author.dept | Chemical Engineering | - |
crisitem.author.orcid | 0000-0002-3031-8920 | - |
crisitem.author.parentorg | College of Engineering | - |
顯示於: | 化學工程學系
|