亲氟和疏水改性聚甘油基涂料对低表面能聚合物润湿性的影响

IF 3.9 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-01-27 DOI:10.1021/acs.langmuir.4c04220

Florian Junge, Rainer Haag

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引用次数: 0

摘要

儿茶酚衍生聚合物可在多种材料上形成稳定的涂层，包括难以涂覆的低表面能聚合物。用亲氟基团或疏水基团修饰涂层聚合物是否是一种成功的方法，以进一步促进疏水或亲氟表面与邻苯二酚基聚合物的涂层，目前仍不明确。在此，我们报告了一系列基于邻苯二酚衍生的聚甘油（PG）涂层和单层涂层对聚四氟乙烯（PTFE）、聚苯乙烯和聚（甲基丙烯酸甲酯）表面润湿性的影响。具有较长亲水性 PG 嵌段的涂层所形成的表面涂层的水接触角（WCA）约为 60°，与改性和基底无关，而具有较长疏水锚定嵌段的涂层所形成的水接触角（WCA）则更为多样，可达 (129 ± 10)°。尽管亲氟改性对大多数基材/涂层组合的影响普遍较小，但一些亲氟改性涂层将聚四氟乙烯的 WCA 降到了伯格极限（65°）以下，这表明表面屏蔽了氟段。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Effect of Fluorophilic- and Hydrophobic-Modified Polyglycerol-Based Coatings on the Wettability of Low Surface Energy Polymers

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Effect of Fluorophilic- and Hydrophobic-Modified Polyglycerol-Based Coatings on the Wettability of Low Surface Energy Polymers

Catechol-derived polymers form stable coatings on a wide range of materials including challenging to coat low surface energy polymers. Whether modification of the coating polymer with fluorophilic or hydrophobic groups is a successful approach to further favor the coating of hydrophobic or fluorophilic surfaces with catechol-based polymers remains ambiguous. Herein, we report the effect of a series of catechol-derived polyglycerol (PG)-based coatings and monolayer coatings on the wettability of polytetrafluoroethylene (PTFE), polystyrene, and poly(methyl methacrylate) surfaces. Coatings with a longer hydrophilic PG block resulted in surface coatings with water contact angles (WCAs) around 60° independently of the modification and substrate, while coatings with a longer hydrophobic anchoring block possessed more diverse WCAs up to (129 ± 10)°. Despite the generally small impact of the fluorophilic modification for most substrate/coating combinations, some fluorophilic modified coatings reduce the WCA of PTFE below Berg’s limit of 65°, indicating a shielding of fluorous segments from the surface.

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).