Three-dimensional thermal annealing: An unconventional method to fabricate monodisperse polymer nanoparticles from polymer films

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• 作者：Yu-Jing Chiu ; Tyng-Yow Kuo ; Ming-Hsiang Cheng ; Hsiao-Fan Tseng ; Yu-Ching Lo and Jiun-Tai Chen
• 刊名：Journal of Polymer Science Part B: Polymer Physics
• 出版年：2016
• 出版时间：December 15, 2016
• 年：2016
• 卷：54
• 期：24
• 页码：2471-2475
• 全文大小：377K
• ISSN：1099-0488

文摘

We develop a simple and feasible method to fabricate polymer nanoparticles by annealing polymer films in a uniform environment. Different from the conventional methods, no extra additive or emulsifier is needed in the preparation processes. Poly(methyl methacrylate) (PMMA) films are used as a model system and annealed at elevated temperatures in ethylene glycol, which provides a uniform three-dimensional annealing environment and acts as stabilizers once the nanoparticles are formed. After the annealing process, PMMA nanoparticles with monodisperse diameters are formed. By examining the remaining films after the annealing process, the formation mechanism, which involves surface undulation and detachment of polymer nanoparticles, is proposed.