本研究主要是利用耗散粒子動力學，模擬兩親性雙嵌段共聚物共混均聚物於選擇性溶劑中的自組裝行為。探討改變高分子的濃度、均聚物的鏈長及選擇性溶劑的性質對平衡形態的影響。
根據研究結果顯示，改變嵌段共聚物的疏溶劑端與溶劑之間的Flory-Huggins交互作用參數(χsolvophobic-solvent,χbs)或是高分子濃度會使自組裝的奈米微結構產生不同的形態，例如：漢堡狀、球形、多室蟲狀微胞。
固定濃度下改變χbs，當共混較短的均聚物，均聚物會分佈在A嵌段（solvophobic）之間，造成A嵌段較為延伸，而共混較長的均聚物時，均聚物會分佈在微胞中間而壓縮A嵌段，造成A嵌段的末端-末端距離較短，而B嵌段（solvophilic）的末端-末端距離則是隨著χbs的增加而下降並且不太會受到均聚物的影響。
微胞大小也會隨著χbs而改變，當χbs上升，微胞尺寸會縮小，這是因為系統會藉由縮小微胞的尺寸，使總介面能量最小化。
藉由調整嵌段共聚物的鏈長可以控制多室蟲狀微胞的包覆，當系統中A粒子的比例介於0.55至0.6之間，提高A嵌段的長度可以較完整的包覆均聚物，而大於或小於此比例皆無法形成多室蟲狀微胞。

The self-assembly of diblock copolymers/homopolymer blend in selective solvent was simulated by Dissipative particle dynamics simulation in this research. We investigated the effect of the polymer concentration, homopolymers length and the selective solvent properties on morphology transition.
It is found that self-assembled nanostructures of different shapes (e.g., hamburger-like, sphere, multicompartment worm-like micelles) can be obtained by varying the Flory-Huggins interaction parameter between the solvophobic block and the solvent (χsolvophobic-solvent,χbs) and concentration of the polymer.
When blending short chain homopolymers, it will distribute over A domain causing block copolymer A more extended. Comparing with the short chain, long chain homopolymers prefer to gather in the center of the micelle and compress block copolymer A. End to end distance of the block copolymer B is decreased with increasing χbs.
Micellar size is also sensitive to the solvent property, which decreases with an increase of interactionsχbs, since system minimizes the total interfacial energy by compressing micellar size.
By increasing the length of the block copolymer A can cover homopolymers more effectively in the multicompartment worm-like micelles when the fraction of the particle A is between 0.55 and 0.6.

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