Polymer on Top: Current Limits and Future Perspectives of Quantitatively Evaluating Surface Grafting,Advanced Materials

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Polymer on Top: Current Limits and Future Perspectives of Quantitatively Evaluating Surface Grafting
Advanced Materials ( IF 27.4 ) Pub Date : 2018-03-07 , DOI: 10.1002/adma.201706321
Lukas Michalek ₁ , Leonie Barner _{1,

2} , Christopher Barner-Kowollik _{1,

3}

Affiliation

Well‐defined polymer strands covalently tethered onto solid substrates determine the properties of the resulting functional interface. Herein, the current approaches to determine quantitative grafting densities are assessed. Based on a brief introduction into the key theories describing polymer brush regimes, a user's guide is provided to estimating maximum chain coverage and—importantly—examine the most frequently employed approaches for determining grafting densities, i.e., dry thickness measurements, gravimetric assessment, and swelling experiments. An estimation of the reliability of these determination methods is provided via carefully evaluating their assumptions and assessing the stability of the underpinning equations. A practical access guide for comparatively and quantitatively evaluating the reliability of a given approach is thus provided, enabling the field to critically judge experimentally determined grafting densities and to avoid the reporting of grafting densities that fall outside the physically realistic parameter space. The assessment is concluded with a perspective on the development of advanced approaches for determination of grafting density, in particular, on single‐chain methodologies.

中文翻译：

最上面的聚合物：定量评估表面接枝的当前极限和未来前景

共价束缚在固体基质上的轮廓分明的聚合物链决定了所得功能界面的特性。在本文中，评估了确定定量接枝密度的当前方法。在介绍聚合物刷涂方式的关键理论的简要介绍的基础上，提供了一个用户指南，以估计最大的链覆盖率，并且-重要地-检查最常用的方法来确定接枝密度，即干厚度测量，重量分析和溶胀实验。通过仔细评估它们的假设并评估基础方程的稳定性，可以估算这些确定方法的可靠性。因此，提供了一种实用的访问指南，用于比较和定量地评估给定方法的可靠性，从而使该领域能够严格判断实验确定的接枝密度，并避免报告超出物理实际参数空间范围的接枝密度。评估以对确定嫁接密度的高级方法的发展，特别是对单链方法学的观点进行了总结。

更新日期：2018-03-07

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