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首页> 外文期刊>RSC Advances >Interaction of synthetic and lignin-based sulfonated polymers with hydrophilic, hydrophobic, and charged self-assembled monolayers
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Interaction of synthetic and lignin-based sulfonated polymers with hydrophilic, hydrophobic, and charged self-assembled monolayers

机译：合成和木质素基磺化聚合物与亲水，疏水和带电自组装单层的相互作用

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There is a need to understand the role of polymer structure on its interaction with surfaces to produce effective functional surfaces. In this work, we produced two anionic polymers of lignin-3-sulfopropyl methacrylate (L-S) and poly(vinyl alcohol- co -vinyl acetate)-3-sulfopropyl methacrylate (PVA-S) with similar charge densities and molecular weights. On the gold-coated surface, we deposited self-assembled monolayers (SAM) bearing different terminal moieties namely, hydroxyl, carboxyl, methyl, and amine groups of alkanethiols. This study highlighted the difference between the interaction of L-S and PVA-S and functionalized self-assembled surfaces. The information was generated using advanced tools, such as an X-ray photoelectron spectroscopy (XPS), and a quartz crystal microbalance with dissipation (QCM-D), which facilitated the correlation development between polymer properties and deposition performance on the functionalized surfaces. The higher deposition of PVA-S than L-S onto OH and COOH surfaces was observed due to its greater hydrogen bonding development and higher solubility. The solubility and structure of PVA-S were also beneficial for its higher adsorption than L-S onto CH _(3) and NH _(2) surfaces. However, the variation in pH, temperature, and salt significantly affected the adsorption of the macromolecules.
机译：需要了解聚合物结构在其与表面产生有效功能表面的相互作用上的作用。在这项工作中，我们生产了甲基蛋白-3-巯基甲基丙烯酸木蛋白酶-3-巯基的阴离子聚合物，以及具有类似电荷密度和分子量的聚（乙烯醇-co-乙烯酯）-3-磺丙基丙烯酸甲酯（PVA-S）。在金涂层表面上，我们沉积了轴承不同终端部分的自组装单层（SAM）即，羟基，羧基，甲基和胺基的链烷醇。该研究强调了L-S和PVA-S和功能化自组装表面的相互作用之间的差异。使用先进的工具（例如X射线光电子能谱）（XPS））生成信息，以及具有耗散（QCM-D）的石英晶体微稳定，其促进了聚合物性质与官能化表面上的沉积性能之间的相关性。由于其氢粘合显影和更高的溶解度，观察到PVA-S较高的PVA-S沉积在OH和COOH表面上。 PVA-S的溶解度和结构也有利于其比L-S更高的吸附到CH _（3）和NH _（2）表面上。然而，pH，温度和盐的变化显着影响了大分子的吸附。

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