Fabrication and Morphology of Spongelike Polymer Material Based on Cross-Linked Sulfonated Polystyrene Particles

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• 作者：Xiang Ji ; Mozhen Wang ; Dezhi Xu ; Xuewu Ge ; Huarong Liu ; Tao Tang
• 刊名：Langmuir
• 出版年：2012
• 出版时间：April 3, 2012
• 年：2012
• 卷：28
• 期：13
• 页码：5498-5502
• 全文大小：327K
• 年卷期：v.28,no.13(April 3, 2012)
• ISSN：1520-5827

文摘

A novel spongelike polymer material has been fabricated by 纬-ray induced polymerization of methylmethacrylate (MMA) in an emulsion containing cross-linked sulfonated polystyrene (CSP) particles. Scanning electron microscopy (SEM) images reveal that the spongelike structure is made up of interlinked nanosized PMMA particles with micrometer-sized CSP-PMMA particles embedded inside. The nitrogen adsorption isotherm discloses that the spongelike material has a high specific surface area of 29 m²/g and a narrow pore size distribution of 60鈥?20 nm. The formation mechanism is discussed in this paper, which indicates that the key steps to form the spongelike material include a Pickering emulsion stabilized by the CSP particles, followed by the swelling process of MMA into these particles. This approach offers a more convenient alternative to prepare polymeric spongelike material without any etching procedure.