Layer by Layer Assembled Silica and Cardanol Epoxy Modified Durable Cotton Fabric for Oil–Water Separation Application

IF 3.3 3区材料科学 Q3 CHEMISTRY, PHYSICAL

Silicon Pub Date : 2025-06-10 DOI:10.1007/s12633-025-03347-y

Srinithi Jeyachandran, Prabunathan Pichaimani, Selvakumar Gopalsamy, Thirumarimurugan Marimuthu

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引用次数: 0

Abstract

Here, two types of silicates (ex-situ SBA-15 and in-situ SiO₂) were employed along with cardanol epoxy (CE) separately to perform the organic–inorganic hybrid coating over cotton via layer by layer (LBL) approach and compared. The silicates were preferred as primary layer along with silane cross-linkers and CE as a secondary layer for the first time. Surface studies shows the importance of both type of silicates as primary layer to achieve the desired superhydrophobicity along with secondary CE layer. Among the silicates, the in-situ SiO₂/CE has offered slightly higher water contact angle (WCA-156°) compared to ex-situ SBA-15/CE (WCA-152°). Finally, both LBL assembled ex situ 7% SBA-15/CE and in-situ 7% SiO₂/CE were tested for their separation behaviour using petrol-water mixture. The separating efficiency for both systems were greater than 99.5%, while in case of flux in-situ 7% SiO₂/CE fabric dominates (18,500 L/m²h). The retention of porous texture of cotton while using the in-situ SiO₂ coating enables superior flux nature. Thus, the outcomes of the present work enable more future research in order to explore different inorganic additives and bio-based polymers towards commercialization of cotton fabric membranes.

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一层层组装二氧化硅和腰果酚环氧树脂改性耐久棉织物的油水分离应用

本文将两种硅酸盐（非原位SBA-15和原位SiO2）分别与腰果酚环氧树脂（CE）一起，通过逐层（LBL）的方法在棉花表面进行有机-无机杂化涂层，并进行了比较。首次优选了硅酸盐为第一层，硅烷交联剂为第二层，CE为第二层。表面研究表明，这两种类型的硅酸盐作为初级层和次级CE层对于实现所需的超疏水性非常重要。其中，原位SiO2/CE的水接触角（WCA-156°）略高于原位SBA-15/CE （WCA-152°）。最后，使用汽油-水混合物测试了LBL组装的非原位7% SBA-15/CE和原位7% SiO2/CE的分离行为。两种体系的分离效率均大于99.5%，而在助熔剂为原位的情况下，SiO2/CE织物占主导地位（18500 L/m2h）。当使用原位SiO2涂层时，保留了棉花的多孔结构，使其具有优越的助熔剂性质。因此，本工作的结果为未来更多的研究提供了基础，以探索不同的无机添加剂和生物基聚合物对棉织物膜的商业化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Silicon CHEMISTRY, PHYSICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.90

自引率

20.60%

发文量

685

审稿时长

>12 weeks

期刊介绍： The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.