Interfacial crosslinking of self‐assembled triblock copolymer nanoparticles via alkoxysilane hydrolysis and condensation,Journal of Polymer Science Part A: Polymer Chemistry

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Interfacial crosslinking of self‐assembled triblock copolymer nanoparticles via alkoxysilane hydrolysis and condensation
Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2018-12-28 , DOI: 10.1002/pola.29313
Guo Hui Teo ₁ , Per B. Zetterlund ₂ , Stuart C. Thickett ₁

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The use of amphiphilic triblock copolymers bearing a reactive alkoxysilane middle block as polymeric stabilizers is reported in this work. A series of poly(ethylene glycol) methyl ether methacrylate‐b‐(3‐trimethoxysilyl)propyl methacrylate‐b‐benzyl methacrylate (PEGMA‐b‐MPS‐b‐BzMA) triblock copolymers were prepared by RAFT solution polymerization and polymerization‐induced self‐assembly (PISA), respectively, where the various block lengths and overall composition were varied. The copolymers prepared by solution polymerization were employed as oil‐in‐water stabilizers where upon application of a catalyst, the 3‐(trimethoxysilyl)propyl methacrylate (MPS) block at the droplet interface was crosslinked to yield capsule‐like structures. The effectiveness of interfacial crosslinking was validated by dynamic light scattering and electron microscopy. In situ self‐assembly by the PISA method resulted in spherical nanoparticles of controllable size that were readily crosslinked by addition of base, with significant enhancement of colloidal stability. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 1897–1907

中文翻译：

自组装三嵌段共聚物纳米粒子通过烷氧基硅烷水解和缩合的界面交联

在这项工作中报道了使用带有反应性烷氧基硅烷中间嵌段的两亲三嵌段共聚物作为聚合物稳定剂。一系列聚（乙二醇）的甲基丙烯酸甲酯-醚b - （3-三甲氧基甲硅烷基）丙基甲基丙烯酸酯b -苄基甲基丙烯酸酯（PEGMA- b -MPS- b‐BzMA）三嵌段共聚物分别是通过RAFT溶液聚合和聚合诱导的自组装（PISA）制备的，其中各种嵌段长度和整体组成各不相同。通过溶液聚合制备的共聚物用作水包油稳定剂，在应用催化剂后，液滴界面处的甲基丙烯酸3-（三甲氧基甲硅烷基）丙酯（MPS）嵌段交联形成胶囊状结构。界面交联的有效性通过动态光散射和电子显微镜验证。原位通过PISA方法的自组装产生了大小可控的球形纳米颗粒，这些纳米颗粒易于通过添加碱进行交联，从而大大提高了胶体稳定性。©2018 Wiley Periodicals，Inc.J.Polym。科学，A部分：Polym。化学 2019，57，1897–1907

更新日期：2018-12-28

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