An ATRP-based approach towards water-borne anisotropic polymer–Gibbsite nanocomposites

An ATRP-based approach towards water-borne anisotropic polymer–Gibbsite nanocomposites
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基于 ATRP 的水性各向异性聚合物-三水铝石纳米复合材料方法

DOI：
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发表时间：
2016
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影响因子：
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通讯作者：
Jpa Johan Heuts
Jpa Johan Heuts
中科院分区：
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文献类型：
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作者：
O. O. Loiko;Ab Anne Spoelstra;A. Herk;J. Meuldijk;Jpa Johan Heuts

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采用原子转移自由基聚合(ATRP)方法合成了聚合物-三水铝石复合胶乳粒子。以ATRP为原料，合成了一种由丙烯酸和丙烯酸丁酯组成的无规ATRP致冷剂。这种冷却剂被用作三水铝石小片的稳定剂，并被用作铜介导的贫料乳液聚合的大引发剂。利用Cu2+的疏水配体，通过优化抗坏血酸的进料曲线和[抗坏血酸]/[Cu2+]的比例，以可控的方式进行了电子转移(ARGET)ATRP乳液聚合再生活化剂，只使用阴离子ATRP冷却剂作为表面活性剂。冷冻-透射电子显微镜表征表明，合成的复合胶乳粒子呈“松饼状”的形态，不受单体加料组成和加料方式的影响。
Polymer–Gibbsite composite latex particles were synthesised via an atom transfer radical polymerisation (ATRP) based approach. A random ATRP cooligomer, consisting of acrylic acid and butyl acrylate units, was synthesized using ATRP. This cooligomer was used as a stabiliser for the Gibbsite platelets and served as a macroinitiator for copper-mediated starved-feed emulsion polymerisation. Using a hydrophobic ligand for Cu2+ and optimising the feeding profile of ascorbic acid and the [ascorbic acid]/[Cu2+] ratio, successful Activator ReGenerated by Electron Transfer (ARGET) ATRP emulsion polymerisation was conducted in a controlled way, using only the anionic ATRP cooligomer as a surfactant. Cryo-TEM characterisation revealed a “muffin-like” morphology of the resulting composite latex particles, which was not affected by monomer feed composition and feeding profile.