本研究探討了由對稱聚苯乙烯-聚(二甲基矽氧烷)嵌段共聚物（PS-b-PDMS）和寡聚二甲基矽氧烷（ODMS）-離子液體（IL）共軛物組成的混合物的相行為和層次結構。研究中使用的ODMS-IL包括ODMS-MMP(+)OMs(-), ODMS-Py(+)OMs(-), ODMS-MMP(+)OTs(-)與ODMS-Py(+)OTs(-)。小角X射線散射（SAXS）技術被用來探究這些混合物的自組裝結構和相行為。
實驗結果顯示，這些摻混物展現出以大尺度和小尺度層狀結構（LAM-in-LAM）為特徵的層次結構。在較低重量分率的ODMS-IL時，大尺度的LAM結構相對穩定，而在較高分率下，小尺度的LAM變得更加顯著。純ODMS-IL材料中觀察到的離子效應也延續到混合系統中。具體而言，純ODMS-IL的較高TODT在混合系統中也有對應表現。含有OMs(-)陰離子的摻混物表現出比OTs(-)較高的熱穩定性。層次結構中小尺度LAM的層間距在OMs(-)和OTs(-)混合系統中也顯示出不同的趨勢，其中，OMs(-)系統相比其對應的純ODMS-IL材料之LAM會收縮，而OTs(-)系統的小尺度LAM則會擴展。
這些發現展示了特定離子液體類型在決定PS-b-PDMS/ODMS-IL混合物的相行為和層次結構中具有關鍵影響。通過結構表徵和相行為分析，本研究展示了這些材料在納米技術和材料科學中先進應用的潛力。這些發現為設計具有定制屬性和複雜層次結構的聚合物提供了基礎，並為未來的創新提供了堅實的基礎。
 

This study investigates the phase behavior and hierarchical structures of blends composed of symmetric polystyrene-block-poly(dimethyl siloxane) (PS-b-PDMS) and various oligo(dimethyl siloxane) (ODMS)-ionic liquid (IL) conjugates. The ODMS-ILs used in this research include ODMS-MMP(+)OMs(-), ODMS-Py(+)OMs(-), ODMS-MMP(+)OTs(-), ODMS-Py(+)OTs(-). Small-angle X-ray scattering (SAXS) was employed to characterize the self-assembled structures and phase behavior of these blends.
The experimental results reveal that the blends exhibit hierarchical structures characterized by large-scale and small-scale lamellae (LAM-in-LAM). At lower weight fractions of ODMS-IL, the large-scale LAM structure remains relatively stable, with the small-scale LAM becoming more pronounced at higher concentrations. The ionic effects observed in the neat ODMS-IL materials are carried into the blend systems. Specifically, the higher TODT observed for the neat ODMS-ILs has its correspondence in the blending system. Blends with the anion OMs(-) exhibit higher thermal stability, with small-scale LAM peaks appearing at higher temperatures compared to blends with the anion OTs(-). The interlamellar distances of the small-scale LAMs in the hierarchical structue also show different trends in the OMs(-) and OTs(-) blending systems, with OMs(-) systems exhibiting a contraction (high-q shift) in the small-scale LAM, while OTs(-) systems showing an expansion (low-q shift) compared to their corresponding neat ODMS-ILs. These findings highlight the critical role of the specific ionic liquid type in determining the phase behavior and hierarchical structuring of PS-b-PDMS/ODMS-IL blends.
Through structural characterization and phase behavior analysis, the research demonstrates the potential of these materials for advanced applications in nanotechnology and materials science. The findings provide a foundation for future innovations in designing polymers with tailored properties and complex hierarchical structures.

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