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首页> 外文期刊>Colloids and Interfaces >Synthesis and Characterization of Hybrid Particles Obtained in a One-Pot Process through Simultaneous Sol-Gel Reaction of (3-Mercaptopropyl)trimethoxysilane and Emulsion Polymerization of Styrene
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Synthesis and Characterization of Hybrid Particles Obtained in a One-Pot Process through Simultaneous Sol-Gel Reaction of (3-Mercaptopropyl)trimethoxysilane and Emulsion Polymerization of Styrene

机译：（3-巯基丙基）三甲氧基硅烷同时溶胶-凝胶反应和苯乙烯乳液聚合一锅法制得的杂化颗粒的合成与表征

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Hybrid particles consisting of an organic polymer and silica or polyorganosiloxanes are interesting building blocks for nanocomposites. The synthesis of such particles typically requires multiple reaction steps involving the formation of polymer colloids and the subsequent deposition of silicon-containing material either inside or on the surface of these colloids, or vice versa. In 2014, we reported a facile method for the one-pot synthesis of sub-micron sized hybrid particles based on simultaneous sol-gel conversion of organotrimethoxysilanes and emulsion polymerization of a vinylic monomer, illustrated by the synthesis of polystyrene-polyphenylsiloxane particles from the monomers styrene and phenyltrimethoxysilane (Segers et al (2014). In this process, the required surface active species was formed in situ through hydrolytic conversion of phenyltrimethoxysilane to phenylsilanolate oligomers. Introduction of thiol groups in such hybrid particles should yield particles suited for functionalization with small metal nanoparticles, e.g., Au. Here, we present the synthesis of thiol-containing hybrid particles consisting of poly(3-mercaptopropyl)siloxane and polystyrene using the one-pot synthesis method based on simultaneous conversion of (3-mercaptopropyl)trimethoxysilane and styrene. We prepared particles from different volume ratios of (3-mercaptopropyl)trimethoxysilane and styrene, ranging from 1:99 to 80:20. The resulting spherical hybrid particles displayed different sizes, compositions, and architectures (including core-shell), which were studied in detail using scanning electron microscopy, thermogravimetric analysis, and scanning transmission electron microscopy combined with energy dispersive x-ray spectroscopy. The composition of these particles, and consequently the number of thiol groups available for further functionalization such as metal anchoring, was tunable.
机译：由有机聚合物和二氧化硅或聚有机硅氧烷组成的杂化颗粒是纳米复合材料的重要组成部分。此类颗粒的合成通常需要多个反应步骤，包括形成聚合物胶体和随后在这些胶体内部或表面上沉积含硅材料，反之亦然。 2014年，我们报告了一种基于有机三甲氧基硅烷的同时溶胶-凝胶转化和乙烯基单体的乳液聚合的单锅合成亚微米级杂化颗粒的简便方法，该方法由单体合成聚苯乙烯-聚苯基硅氧烷颗粒举例说明苯乙烯和苯基三甲氧基硅烷（Segers等人（2014）。在此过程中，所需的表面活性物质是通过将苯基三甲氧基硅烷水解转化为苯基硅烷醇酸酯低聚物而原位形成的。在此类杂化颗粒中引入硫醇基团应产生适用于小金属官能化的颗粒）纳米粒子，例如Au。在这里，我们介绍了基于（3-巯基丙基）三甲氧基硅烷和苯乙烯同时转化的一锅合成法，合成由聚（3-巯基丙基）硅氧烷和聚苯乙烯组成的含硫醇杂化粒子。我们从（3-巯基丙基）三甲基甲烷的不同体积比制备了颗粒氧基硅烷和苯乙烯，范围为1:99至80:20。所得球形杂化颗粒显示出不同的尺寸，组成和结构（包括核-壳），已使用扫描电子显微镜，热重分析和扫描透射电子显微镜结合能量色散X射线光谱进行了详细研究。这些颗粒的组成以及因此可用于进一步官能化（例如金属锚定）的硫醇基团的数量是可调的。

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