Polyvinyl alcohol (PVA)/montmorillonite (MMT) nanocomposite coatings via a rotational coating method

IF 21.8 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Advanced Composites and Hybrid Materials Pub Date : 2024-09-24 DOI:10.1007/s42114-024-00965-9

Zaili Hou, Sonia E. Chavez, Anna Marie LaChance, Michael D. Jones, Cole D. French, Aidan M. Walsh, Montgomery T. Shaw, Luyi Sun

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Abstract

A custom-made rotational coating system that can apply constant, uniform, and high force to nanosheets was made. Montmorillonite (MMT) nanosheets and polyvinyl alcohol (PVA) chains were coassembled onto a poly(ethylene terephthalate) (PET) substrate using a rotational coating process. Different concentrations and centripetal accelerations were explored to study their effects on coating properties. The nanocoating thickness was determined by a thin-film measurement system and a stylus profilometer. The turbidity of the coating layer was determined using ultraviolet–visible (UV–Vis) spectrophotometry and the Beer-Lambert law. The nanostructure of the coating was characterized by X-ray diffraction (XRD). Finally, the oxygen transmission rate was measured to determine the effects of processing conditions on permeability. Two statistical approaches were used to determine the degree to which each processing parameter has an impact on each coating property. Aside from the fundamental study on rotational coating, this coating technique can fabricate highly ordered nanocoatings with significantly improved barrier properties. Potential applications are envisioned in the fabrication of food packages, dielectric materials, and biomedical devices.

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通过旋转涂布法获得聚乙烯醇（PVA）/蒙脱石（MMT）纳米复合涂层

一种可对纳米片施加恒定、均匀和高力的定制旋转涂层系统已经制成。采用旋转涂布工艺将蒙脱石（MMT）纳米片和聚乙烯醇（PVA）链共同组装到聚对苯二甲酸乙二醇酯（PET）基底上。研究人员探索了不同浓度和向心加速度对涂层性能的影响。纳米涂层厚度由薄膜测量系统和测针轮廓仪测定。涂层的浊度是通过紫外-可见（UV-Vis）分光光度法和比尔-朗伯定律测定的。涂层的纳米结构由 X 射线衍射 (XRD) 表征。最后，测量了氧气透过率，以确定加工条件对渗透性的影响。使用两种统计方法来确定每种加工参数对每种涂层特性的影响程度。除了对旋转涂层的基础研究外，这种涂层技术还能制造出高度有序的纳米涂层，并显著改善其阻隔性能。该技术有望应用于食品包装、电介质材料和生物医学设备的制造。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.