• 作者： 陳方玉
• 作者服務機構： 中正理工學院物理系
• 中文摘要： 以模與模偶合理論推廣Kirwood近似法，探討長鏈分子溶液之動態。利用規化的概念和再歸元群法，發現動力指數z和黏滯指數λ，都與靜力指數v有關，其關係分另別為z=(1+2v+60 v)／(v+20V)和λ=(v-1)∕(v +20 v)。另外我們亦發現擴散係數除了要有模一模偶合項之外，還應包括一個原始項；而長鏈分子對溶液黏滯係數的影響僅跟分子之長度有一個微弱的關聯。
• 英文摘要： A mode-mode coupling theory is established to extend the Kirkwood approximation for the dy-namics of polymer solution. By use of the scaling concept and renormalization group method, it is shownthat the dynamic exponent, z, and the viscosity exponent,λ, depend on the static exponent, v, as z =(1+2v+60v)/(v+20V) andλ=(v -1)/(v+20) respectively. It is also found that the diffusion coefficientin long wave limit should include a bare term in addition to the mode-mode coupling term, and the intrinsicviscosity only has a weak dependence on the length of polymer.
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