• 作者： Yu, T.L.
• 中文摘要： 本研究測定九支鏈星形聚苯乙烯於良好溶劑及.theta.-溶劑中之極限黏度及滲透係數。由此極限黏度及滲透係數之實驗數據所推算得之分歧參數與理論計算所獲得之分歧參數值極為接近。本報告證實利用滲透係數測定星形聚合體之分歧參數為一良好方法。
• 英文摘要： A 9-branch polystyrene star was studied through means of intrinsic viscosity and dynamic light scattering in dilute solution in both a good and a theta solvent. The branch parameters "g" (the ratio of the mean-square radius of gyration of the branched molecule to that of a linear chain possessing an equal number of segments) and "h" (the ratio of the friction coefficients of branched and linear polymers of the same number of segments) were respectively evaluated by intrinsic viscosity .lbrak..eta..rbrak. and translational diffusion coefficient at zero concentration D/sub t//sup o/. A good agreement between the theory and the experimental results was obtained.
• 中文關鍵字： 星形聚合體; 本質黏度; 擴散係數; 分歧參數
• 英文關鍵字： Star Polymer; Intrinsic Viscosity; Diffusion Coefficient; Branch Parameter