【學術亮點】Morphological Control of Single-Concave Elastomeric Colloid through Cross-Linking and Osmotic Pressure Variations for Chemical Delivery
Ecological Agriculture: Optimization and Validation of Soil Carbon Sequestration Prediction Models【Department of Materials Science Engineering / Hsueh, Han-Yu / Professor】
生態農業：土壤碳蓄存之預測模型優化及驗證【材料科學與工程學系/薛涵宇教授】
| 論文篇名 | 英文：Morphological Control of Single-Concave Elastomeric Colloid through Cross-Linking and Osmotic Pressure Variations for Chemical Delivery 中文：以交聯和滲透壓變化控制單凹彈性膠體的形態並用於化學物質輸送 |
| 期刊名稱 | ACS Applied Materials & Interfaces |
| 發表年份,卷數,起迄頁數 | 2025, 17, 23414-23424 |
| 作者 | Ho, Yi-Chen; Xu, Ting-Yu; Juan, Chieh-Yun; Lai, Yi-Shan; Lai, Yu-Fang; Tseng, Pei-Chieh; Hsueh, Han-Yu(薛涵宇)* |
| DOI | 10.1021/acsami.5c03818 |
| 中文摘要 | 本文提出了一種簡單易行的雙乳液溶劑蒸發法製備彈性體屈曲球殼的方法。此方法將聚二甲基矽氧烷（PDMS）加入水包油包水乳液體系中並攪拌。隨著溶劑蒸發和膠體固化，形成的空腔內的水相因交聯應力而被擠出，或水相滲透到球體內部，導致內部水相損失，形成單凹碗狀殼（即屈曲變形的殼）。我們可以透過改變滲透劑和交聯劑的濃度以及滲透劑的分子量來控制所製備膠體顆粒的形貌。此外，我們提出了一種解釋雙乳液聚合過程中結構變化的機制，重點在於交聯力和滲透壓。利用殼層在溶劑中可逆溶脹的特性，製備的PDMS屈曲殼層將尼羅紅分子吸收到其空腔中，導致其膨脹並恢復原狀。將這些殼層浸入乙醇中，可釋放尼羅紅分子。因此，透過此方法製備的PDMS屈曲殼層在環境感測和藥物遞送系統中具有應用潛力。 |
| 英文摘要 | In this paper, we propose a convenient and simple method for preparing elastomeric buckled spherical shells through double-emulsion solvent evaporation. In this method, polydimethylsiloxane (PDMS) is added to a water-in-oil-in-water emulsion system and stirred. As the solvent evaporates and the colloid solidifies, the aqueous phase inside formed cavity is squeezed out because of cross-linking stress, or this phase permeates the sphere, leading to loss of the internal water phase and the formation of a single-concave, bowl-shaped shell (i.e., a shell with buckling deformation). We could control the morphology of the produced colloidal particles by varying the concentrations of the permeant and cross-linking agent and the molecular weight of the permeant. Moreover, we propose a mechanism explaining the structural changes occurring during the double-emulsion polymerization process, focusing on cross-linking forces and osmotic pressure. Through leveraging of the shells' reversible swelling properties in solvents, the prepared buckled PDMS shells absorbed Nile red molecules into their cavity, which caused their expansion and restoration. Immersing these shells in ethanol resulted in release of the Nile red molecules. Thus, buckled PDMS shells prepared through the proposed method have potential for application in environmental sensing and drug delivery systems. |
| 發表成果與本中心研究主題相關性 | 本研究透過雙重乳液溶劑蒸發法製備具可逆變形的PDMS彈性屈曲球殼，能精確控制形貌與吸附釋放能力，展現出在藥物遞送與環境感測等領域的應用潛力。其特殊的非破壞性多次釋放特性，未來可應用於農業之農藥、肥料緩釋系統，降低資源浪費與環境污染風險，並可作為農業環境的感測平台，有效支援農業系統未來朝智能化、低環境衝擊與高效率方向發展。 |
