Preparation of a rubber nanocomposite for oil/water separation using surface functionalized/silanized carbon black nanoparticles

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry Pub Date : 2024-09-18 DOI:10.1016/j.wri.2024.100268

Fatemeh Ghasemi , Masoud Jamshidi , Reza Ghamarpoor

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引用次数: 0

Abstract

Clean water is the basic need of living organisms on the earth. Oil spills to free waters is one of the most important threats to living beings. It has been believed that using sorbents is the most effective method for this purpose. In this research, usage of tire rubber with improved hydrophobic properties is considered. For this purpose, carbon black nanoparticles (CBNs) were surface modified with vinyltrimthoxysilane (VTMS) at concentrations of 1, 5 and 10 by sol-gel method. Before, the CBNs were hydroxylated to increase silane grafting content. The surface modified was evaluated using XPS, FTIR, TGA, BET and FESEM analysis. Results showed a great change in the CBNs nature from hydrophilic to hydrophobic after silane modification that could help in more oil absorption and water repletion at the same time. In fact, the water contact angle (WCA) of the CBNs changed from 40 to 135°. The pure and silane grafted CBNs were added to the tire tread compound to prepare elastomeric nanocomposites as oil sorbent. The results showed that the modified nanocomposite had a higher reinforcement index than the samples contained pure and hydroxylated CBNs. The effects of CBNs on WCA, OCA and oil absorption capacity of the samples were also determined. It was found that silane modification a considerable increase in the WCA from 61.2° to 125.03° and a decrease in the oil contact angle (OCA) from 70.01° to 17.74°. Also, the oil absorption capacity of rubber enhanced from 0.55 to 1.95 g/g.

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利用表面功能化/硅烷化炭黑纳米颗粒制备用于油水分离的橡胶纳米复合材料

清洁的水是地球上生物的基本需求。石油泄漏到自由水域是对生物最重要的威胁之一。人们认为，使用吸油剂是最有效的方法。在这项研究中，考虑使用具有更好疏水特性的轮胎橡胶。为此，采用溶胶-凝胶法用乙烯基三甲氧基硅烷（VTMS）对炭黑纳米颗粒（CBNs）进行了表面改性，改性浓度分别为 1、5 和 10。在此之前，先对 CBN 进行羟基化处理，以增加硅烷接枝的含量。使用 XPS、傅立叶变换红外光谱、热重分析、BET 和 FESEM 分析对表面改性进行了评估。结果表明，经过硅烷改性后，CBNs 的性质发生了很大变化，从亲水性变为疏水性，这有助于同时提高吸油量和补水量。事实上，CBN 的水接触角（WCA）从 40° 变为 135°。将纯的和硅烷接枝的 CBN 添加到轮胎胎面化合物中，制备出作为吸油剂的弹性纳米复合材料。结果表明，改性纳米复合材料的补强指数高于纯CBN和羟基CBN样品。此外，还测定了 CBN 对样品的 WCA、OCA 和吸油能力的影响。结果发现，硅烷改性使 WCA 从 61.2° 显著增加到 125.03°，油接触角（OCA）从 70.01° 减小到 17.74°。此外，橡胶的吸油能力也从 0.55 g/g 提高到 1.95 g/g。

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来源期刊

Water Resources and Industry Social Sciences-Geography, Planning and Development

CiteScore

8.10

自引率

5.90%

发文量

审稿时长

75 days

期刊介绍： Water Resources and Industry moves research to innovation by focusing on the role industry plays in the exploitation, management and treatment of water resources. Different industries use radically different water resources in their production processes, while they produce, treat and dispose a wide variety of wastewater qualities. Depending on the geographical location of the facilities, the impact on the local resources will vary, pre-empting the applicability of one single approach. The aims and scope of the journal include: -Industrial water footprint assessment - an evaluation of tools and methodologies -What constitutes good corporate governance and policy and how to evaluate water-related risk -What constitutes good stakeholder collaboration and engagement -New technologies enabling companies to better manage water resources -Integration of water and energy and of water treatment and production processes in industry